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SPECIFICATION CATALOG NKW 020 to 130 kW Commercial Reversible Chiller - 50 Hz

Commercial Reversible Chiller - 50 Hz

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Page 1: Commercial Reversible Chiller - 50 Hz

SP

EC

IFIC

AT

ION

CA

TA

LO

G

NKW 020 to 130 kWCommercial Reversible Chiller - 50 Hz

Page 2: Commercial Reversible Chiller - 50 Hz
Page 3: Commercial Reversible Chiller - 50 Hz

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Table of Contents

Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

BS EN 14511-2 Performance Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

The Envision Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7

Inside the Envision Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9

Envision Controls - FX10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-15

Envision Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-18

Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Reference Calculations and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Antifreeze Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Pressure Drop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-41

Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42-43

Engineering Guide Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44-45

Revision Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Page 4: Commercial Reversible Chiller - 50 Hz

4

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

All Envision Series NKW product is safety tested to CE standards andperformance tested in accordance with standard BS EN 14511-2.

Model Nomenclature1-3 4-6 7 8 9 10 11 12 13 14-15 16

NKW 060 R 7 P F 8 N N SS A

Model NKW = Envision Series

R-410A Chiller 50 Hz

Capacity (kW) 020, 025, 030, 035, 045,

050, 060, 090, 130

Operation R = Reversible

Voltage 7 = 380-420/50/3

Phase Protection P = Phase Guard

Chassis E = Enclosed

F = Open Frame

Vintage A = 020-060

B = 090

C = 130

Non-Standard Option Details SS = Non-Standard

Future Use N = Future Use

Future Use N = Future Use

Controls 8 = FX10 without communication,

with User Interface

9 = FX10 w/ Open N2 Com Card,

w/ User Interface

0 = FX10 w/ Lonworks Com Card,

with User Interface

3 = FX10 w/ BacNet Com Card,

w/ User Interface

Certi cate Number NQA ‘00000028’Factory Standard MCS010Product Standard MCS007

Page 5: Commercial Reversible Chiller - 50 Hz

5

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

BS EN 14511-2 Performance Ratingsg

Legendg

ABBREVIATIONS AND DEFINITIONS:

COP = coefficient of performanceEER = cooling energy efficiency (TC/kW)ELT = entering load fluid temperatureEST = entering source fluid temperature to heat pumpFLA = full load ampsFtHd = pressure drop in feet of headgpm = US gallon per minuteHC = heating capacity in kWHE = heat of extraction in kWHR = heat rejected in kWkPa = kilopascalkW = kilowatt

L/s = liters per secondLLT = leaving load fluid temperature from heat pumpLRA = locked rotor amps (starting current)LST = leaving source fluid temperature from heat pumpLWPD = load heat exchanger water pressure dropMCC = maximum continuous currentPD = pressure droppsi = pressure drop in pounds per square inchP/T = Pressure/TemperatureRLA = run load ampsTC = total cooling capacity in kWW = Watt

Heating Performance

Model

B0/W35 W10/W35 B0/W45 B5/W35 W10/W45

CapacityOutput

kW COP

Power Input kW

CapacityOutput

kW COP

Power Input kW

CapacityOutput

kW COP

Power Input kW

CapacityOutput

kW COP

Power Input kW

CapacityOutput

kW COP

Power Input kW

020 21.7 3.7 5.87 27.6 4.60 5.96 20.8 2.80 7.41 25.0 4.20 5.97 26.7 3.60 7.44

025 25.7 3.6 7.14 32.6 4.50 7.25 24.7 2.70 9.02 30.0 4.10 7.27 31.6 3.50 9.10

030 28.7 3.5 8.20 36.4 4.40 8.33 27.6 2.70 10.4 33.0 4.00 8.35 35.3 3.40 10.4

035 31.7 3.7 8.57 40.3 4.60 8.71 30.4 2.80 10.8 36.5 4.20 8.72 39.0 3.60 10.9

045 38.8 3.6 10.8 49.3 4.50 11.0 37.2 2.70 13.6 44.6 4.10 11.0 47.7 3.50 13.7

050 44.4 3.7 12.0 56.4 4.60 12.2 42.6 2.80 15.2 51.1 4.20 12.2 54.6 3.60 15.2

060 52.3 3.6 14.5 66.4 4.50 14.8 50.2 2.70 18.4 60.1 4.10 14.8 64.3 3.50 18.4

090 77.0 3.6 21.4 97.8 4.50 21.7 73.9 2.70 27.0 88.6 4.10 21.8 94.7 3.50 27.1

130 120.0 3.5 34.3 152.4 4.40 34.8 115.2 2.70 43.3 138.0 4.00 34.9 147.6 3.40 43.5

All ratings based upon 220V operationAll ratings based on new heat pump with clean heat exchangers

9/23/11

Cooling Performance

Model

W30/B0 W30/W12 W30/W23

CapacityOutput kW

EER (W/W)Power Input

kW Capacity

Output kW EER (W/W)

Power Input kW

CapacityOutput kW

EER (W/W)Power Input

kW

020 16.8 2.70 6.22 24.7 4.00 6.22 34.1 5.40 6.28

025 20.6 2.70 7.63 30.3 4.00 7.63 41.8 5.40 7.71

030 23.2 2.60 8.92 34.1 3.80 8.92 47.1 5.20 9.01

035 25.6 2.70 9.50 37.6 4.00 9.50 51.2 5.40 9.58

045 31.5 2.60 12.1 46.3 3.80 12.1 64.0 5.20 12.2

050 36.1 2.70 13.4 53.1 4.00 13.4 73.3 5.40 13.5

060 42.8 2.50 17.1 62.9 3.70 17.1 86.9 5.00 17.3

090 68.1 2.50 27.2 88.0 3.70 23.8 121.0 5.00 24.2

130 88.0 2.60 34.0 128.9 4.00 32.2 160.0 5.00 32.0

All ratings based upon 220V operationAll ratings based on new heat pump with clean heat exchangers

9/23/11

CONVERSIONS:

x°F = (x - 32)/1.8°Cx1 bar = 100 kPa1 gpm = 0.0631 L/s

1 US Gallon = 3.785412 L1 Btu/h = 0.29037 W

Page 6: Commercial Reversible Chiller - 50 Hz

6

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

The Envision Series

NKW Features

Dual scroll compressors for

efficiency and reliability

Optional insulated

sheet metal cabinet

to reduce noise

Sturdy frame to

reduce vibration

Fork truck cutouts for

maneuvering at job site

Compressor blanket standard

for noise reductiontion

Victaulic style water

connections for an easier

and faster connection

Small modular design for

application flexibility

Integrated lifting points

for ease of handling

High efficiency brazed plate

heat exchangers for efficiency

and compact size

Reversible operationn for

application flexibbility

y insulated suction and water Fully

lines lines to prevent condensation at

reduced fluid operating temperatures

Sophisticated microprocessor

control with robust safety

controls and advanced

freeze detection

Durometer selected grommets to

reduce noise and vibration (optional

springs available as an accessory)

Page 7: Commercial Reversible Chiller - 50 Hz

7

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

High Efficiency

The Envision Series are the highest efficiency units available. Large oversized water to refrigerant heat exchangers and scroll compressors provide extremely efficient operation. Thisefficiency means the Envision Series requires less loop thanany product on the market. This can mean significant savings on commercial projects.

Standard Features

• Heavy gauge frame and rails

• Quiet scroll compressors in all models

• Two-dimension refrigerant piping vibration loops to

isolate the compressor

• All interior of optional cabinet surfaces, including the

compressor compartment, are insulated with 12.7 mm

thick 24 kg/m3 density, surface coated, acoustic type

glass fiber insulation

• Phase guard protection prevents scroll compressor from

reverse rotation

Flexible Control Options

The FX10 control provides unmatched capability

in several areas including performance monitoring,

energy management, and service diagnosis, and then

communicates it all thru standard DDC protocols like

N2, Lon and BACnet (MS/TP @ 19,200 Baud Rate).The most unique feature is integrating the FX10 into the Envision series as both the heat pump and DDC controller providing both a cost advantage and features not typically found on WLHP controls. This integration allows heat pump monitoring sensors, status and service diagnosis faults to be communicated thru the DDC direct to the building automation system (BAS), giving building supervisors detailed andaccurate information on every piece of equipment without removing an access panel!

Easy Maintenance and Service Advantages

• Removable compressor access panels (on

optional cabinet)

• Quick attach wiring harnesses are used throughout for

fast servicing

• High and low pressure refrigerant service ports

• Optional user interface for diagnostics and

commissioning of FX controls

• Dual refrigerant circuit

Factory Quality

• All refrigerant brazing is performed in a nitrogen

purge environment

• Computer controlled deep vacuum and refrigerant

charging system

• All joints are leak detected for maximum leak rate of

less than 7.4 mL per year

• Computer bar code equipped assembly line ensures all

components are correct

• All units are computer run-tested with water to verify

both function and performance

The Envision Series cont.

Page 8: Commercial Reversible Chiller - 50 Hz

8

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Refrigerant

Envision products all feature zero ozone depletion and low

global warming potential R-410A refrigerant.

Cabinet

All unit frames are constructed of heavy gauge steel

channel and painted with a corrosion resistant black,

polyester, powder coat paint. The optional sheet metal

cabinets are constructed of heavy gauge galvanized

sheet steel painted with white, polyester, powder coat

paint rated at more than a 1,000 hours salt spray rating.

The frame includes fork truck access pockets in two

dimensions and lifting points for easy maneuvering during

installation and servicing.

Compressors

High efficiency R-410A scroll compressors are used onevery model. Scrolls provide both the highest efficiency available and great reliability.

Electrical Box

Unit controls feature quick connect wiring harnesses for easy servicing. Separate knockouts for low voltage, and two forpower on two sides allow easy access to the control box. A large 75VA transformer assures adequate control's power foraccessories. Flexible Johnson Controls FX10 microprocessor control is included, featuring several innovations. See

Envision Controls section for more information.

Water Connections

All water line connections are 50.8 mm Victaulic grooved nipples for ease of installation with optional connection kits. Factory installed thermistors are used on all water lines and can be viewed through the microprocessor interface tool. Pressure ports are also added at the factory for easyservice access.

Thermostatic Expansion Valve

All Envision models utilize a balanced

port bidirectional thermostatic

expansion valve (TXV) for refrigerant

metering. This allows precise

refrigerant flow in a wide range

of entering water variation (-7 to

49°C) found in geothermal systems.

The TXV's location makes it easily

accessible for service.

Water-to-Refrigerant Heat Exchanger

Large oversized stainless steel interlaced copper-brazed plate water-to-refrigerant heat exchangers provide unparalleled efficiency. The heat exchangershave common water circuits withisolated refrigerant circuits so that in part load operation, thefull mass of the heat exchanger isutilized. All heat exchangers arepressure rated to 3108 kPa water side and 4489 kPa refrigerant side. All heat exchangers, water lines,and suction lines are insulated toprevent condensation during low temperature inlet water operation.

Strainers

All units shall have a field-installed 2 in.

[50.8 mm] Female Pipe Thread (FPT)

Y-strainer with a self-aligning screen

and 1 in. blow-off port to reduce debris

that will enter the condenser/evaporator.

Strainers should be made of a brass

body with a 316 stainless steel 420-840

microns screen.

WARNING: Warranty is void if strainers are not used on the entering side of the load and source.

Inside the Envision Series

50.8 mm

Victaulic

Grooved Nipples

Brazed Plate Heat Exchanger

Optional Connection Kit

CKV160FL (Includes four

of each)

TKC16S-4

(1 of 4)

Page 9: Commercial Reversible Chiller - 50 Hz

9

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Service Connectionsand Serviceability

Two Schrader service ports are providedfor each circuit on every unit. Thesuction side and discharge side ports arefor field charging and servicing access. All valves are 11.1 mm SAE connections.

4-Way Reversing Valve

Envision units feature a reliable all-brass pilot operated refrigerant reversing valve. The reversing valveoperation is limited to change of mode by the control toenhance reliability.

Inside the Envision Series cont.

Grommets Standard

Heavy Duty MountingSprings Optional

IS-325-01 (NKW020-090)

IS-750-01 (NKW130)

Vibration Isolation

Units are shipped with heavy duty, durometer selected rubber grommets to reduce sound that can be transmitted through the floor via the frame (see grommets below). For additional sound attenuation, optional heavy duty springisolation can reduce sound levels by 3 dBA (see springs below) can be purchased as an accessory.

Page 10: Commercial Reversible Chiller - 50 Hz

10

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

FX10 Control

The FX10 control provides unparalleled capability

in several areas including performance monitoring,

energy management, and service diagnosis, and then

communicates it all thru standard DDC protocols like N2,

Lon and BACnet (MS/TP @ 19,200 Baud Rate).

The most unique feature is integrating the FX10 into the

Envision series as both the heat pump and DDC controller

providing both a cost advantage and providing features not

typically found on controls. This integration allows chiller

monitoring sensors, status and service diagnosis faults

to be communicated thru the DDC direct to the building

automation system (BAS), giving building supervisors

detailed and accurate information on every piece of

equipment without removing an access panel!

Control General Description Application Display/Interface Protocol

The FX10 microprocessor control is selfcontained control featuring LP, LOC, HP, andLWT fault modes can be displayed on BASsystem. Optional handheld Medium UserInterface (MUI) Control can be used foradditional setup or servicing. Programcustomization is possible.

Cannot be integrated with centralized building automation systems.Software can be customized for specific projects.

Standard Medium User Interface (MUI) can be used as a field service tool.

Standalone

FX10 Control functions as both unitary heat pump control and DDC communication, therefore detail operational and fault information is available to BAS. Other features are same as FX10 with addition of Johnson Controls N2 compatibility.

Same as FX10 with Johnson Controls N2 BAS compatibility.

Standard Medium User Interface (MUI) can be used as a field service tool.

Johnson Controls N2 network

FX10 Control functions as both unitary heat pump control and DDC communication, therefore detail operational and fault information is available to BAS. Other features are same as FX10 with addition of LonWorks compatibility.

Same as FX10 with LonWorks BAS compatibility.

Standard Medium User Interface (MUI) can be used as a field service tool.

LonWorks

FX10 Control functions as both unitary heat pump control and DDC communication, therefore detail operational and fault information is available to BAS. Other features are same as FX10 with addition of BACnet compatibility.

Same as FX10 with BACnet BAS compatibility.

Due to communication speed, no more than 30 units shouldbe connected to a single trunk of the network.

Standard Medium User Interface (MUI) can be mounted or used as field service tool.

BACnet - MS/TP (19,200 Baud Rate)

FX10

FX10 w/N2

FX10 w/LonWorks

FX10 w/BACnet

Envision Controls - FX10

Page 11: Commercial Reversible Chiller - 50 Hz

11

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

FX10 Advanced Control Overview

• The Johnson Controls FX10 board is specifically designed

for commercial heat pumps and provides control of the

entire unit as well as input ports for Open N2, LonTalk,

BACnet (MS/TP @ 19,200 Baud Rate) communication

protocols as well as an input port for a user interface.

The user interface can be used to aid in diagnostics and

unit setup and is standard on all NKW chillers. A 16-

pin low voltage terminal board provides terminals for

common field connections. The FX10 Control provides:

• Operational sequencing

• High and low-pressure switch monitoring

• General lockout

• Advanced Freeze Detection Temperature Sensing

• Lockout mode control

• Emergency shutdown mode

• Random start and short cycle protection

Short Cycle Protection

Allows a minimum compressor “off” time of five minutes

and a minimum “on” time of two minutes.

Random Start

A delay of 1 to 120 seconds is generated after each power-

up to prevent simultaneous startup of all units within a

building after the release from an unoccupied cycle or

power loss.

Emergency Shutdown

A field-applied dry contact can be used to place the

control into emergency shutdown mode. During this mode,

all outputs on the board are disabled.

Freeze Detection Temperature Limit

Field selectable for -9.4° or 0.6°C

Installation Options

• Standalone controlled by and aquastat

• Integrated into BAS by adding communication module

Accessory Outputs

Quantity 1. Cycled with the lead compressor. Field selectable

for normally open (factory default) or normally closed

through the building automation system or user interface.

User Interface

10 cm x 51 cm backlit LCD

Optional Plug-in Communication Modules -(compatible with standard BAS protocols)

• Open N2

• LonTalk

• BACnet (MS/TP @ 19,200 Baud Rate)

Display

One local display is standard on all NKW units. Up to

2 displays, either 1 local and 1 remote, or 2 remote. (A

2-display configuration requires identical displays.) Local

display can be up to 3 meters from the controller, power

supply, and data communication. Remote display can be

up to 300 meters from the controller. Remote display must

be independently powered with data communication done

via 3 pole shielded cable.

Control Timing & Fault Recognition Delays

Lead compressor “ON” delay ..........................................90 seconds

(not applicable for single compressor models)

Minimum compressor “ON” time ...................................... 2 minutes

(except for fault condition)

Short cycle delay ..................................................................... 5 minutes

Random start delay .......................................................0-120 seconds

High pressure fault .................................................................<1 second

Low pressure fault ...............................................................30 seconds

Freeze detection fault ...................................................0-30 seconds

Low pressure fault bypass ................................................... 2 minutes

Envision Controls - FX10 cont.

Mainn FX10 Board

Page 12: Commercial Reversible Chiller - 50 Hz

12

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Envision Controls - FX10 cont.

FX10 Microprocessor and BAS System

The FX10 is a microprocessor based control that not

only monitors and controls the heat pump but also can

communicate any of this information back to the building

automation system (BAS). This means that not only does

the control monitor the heat pump at the unit you can also

monitor and control many of the features over the BAS.

This clearly puts the FX10 in a class of its own.

The control will enumerate all fault conditions (HP, LP,

LOC, and Freeze Detection) over a BAS as well as display

them on a medium user interface (MUI). HP, LP, and Freeze

Detection faults can all be reset over a BAS. A Loss Of

Charge fault can not be reset or bypassed until the problem

has been corrected. A MUI is invaluable as a service tool for

the building service team.

The unit can be commanded to run by applying Y1, Y2, and

B commands to the terminal board or commanded through

a BAS. The control board is wired with quick connect

harnesses for easy field change out of a faulty control

board. An alarm history can be viewed through the MUI and

will be held in memory until the unit is power cycled.

The FX10 control has unused analog and digital inputs for

field installed items such as water temperature or current

status switches. The control has unused binary and PWM

outputs that can be commanded over the BAS for field use. A

Medium User Interface (MUI) for control setup and advanced

diagnostics is standard on all reversible chiller models.

Standard Features

• Anti Short Cycle

• High Pressure Protection

• Low Pressure Protection

• Freeze Detection

• Loss of Charge Detection

• Random Start

• Display for diagnostics

• Reset Lockout at disconnect or through BAS

• 1 Accessory outputs

• Optional BAS add-on controls

• Compressor Lead/Lag

DDC Operation & Connection

Other optional network protocol boards that can be added

to the FX10 are:

• Johnson Control N2

• LonWorks

• BACnet

- MS/TP @ 19,200 Baud rate

- Limit devices to 30 on a single trunk line.

Control and Safety Feature DetailsEmergency Shutdown

The emergency shutdown mode can be activated by a

command from a facility management system or a closed

contact on BI-2. The default state for the emergency

shutdown data point is off. When the emergency shutdown

mode is activated, all outputs will be turned off immediately

and will remain off until the emergency shutdown mode is

de-activated. The first time the compressor starts after the

emergency shutdown mode has been de-activated, there

will be a random start delay present.

Lockout Mode

Lockout mode can be activated by any of the following

fault signals: refrigerant system high pressure, refrigerant

system low pressure, or freeze detection. When any valid

fault signal remains continuously active for the length

of its recognition delay, the controller will go into fault

retry mode, which will turn off both compressors. After

the compressor short cycle delay, the compressors will

attempt to operate once again. If three consecutive faults

occur in 60 minutes, the unit will go into lockout mode,

turning off the compressor(s), enabling the alarm output

until the controller is reset. If the control faults due to the

low pressure input being open during the pre-compressor

startup check, the control will go into lockout mode

immediately, disabling the compressors from starting and

enabling the alarm output. The lockout condition can be

reset by powering down the controller, by a command from

the BAS, or by the holding the ESC and Return keys on the

user interface for 5 seconds. NOTE: See freeze detection section for more detail.

Page 13: Commercial Reversible Chiller - 50 Hz

13

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Envision Controls - FX10 cont.

Reversible Chiller Advanced FreezeDetection SystemThe reversible chiller source and load heat exchangers are

protected by a multi-sourced temperature logic strategy. The

temperature logic is based upon the refrigerant temperature

sensed as the refrigerant is about to enter the heat

exchanger; while entering and leaving water temperatures

are being used as correlating factors. The detection scheme

is shown as basic and advanced algorithms.

Basic Freeze Detection Operation: “Comp1 orComp2 Freeze” Alarm

This alarm can be triggered by one of two detection schemes.

Hard Limit Freeze DetectionIf the refrigerant temperature drops below the freeze

detection setpoint by 1°C, the associated compressor is

locked out immediately regardless of any other factors

and requires a manual reset. NOTE: This Lockoutproduces a “Comp 1 or Comp 2 Freeze” error on the MUI display.

Freeze DetectionThe refrigerant temperature is compared to the freeze

detection setpoint (-9.4°C [antifreeze] or 0.6°C [water]

field selectable), and if the temperature falls below the

setpoint for 30 continuous seconds, the associated

compressor will be halted. This function becomes

enabled after the first two minutes of compressor

operation. Three such events in 60 minutes will trigger a

compressor lockout that requires a manual reset. NOTE:This Lockout produces a “Comp 1 or Comp 2 Freeze” error on the MUI display.

In addition to the above:Entering Water Temperature InfluenceIf the entering water temperature of the evaporative

heat exchanger is within 10°F [5.6°C] of the freeze

setpoint, the previously mentioned two minute delay

will be eliminated. This allows the freeze detection to

operate immediately when the compressor starts based

on entering water temperature.

Leaving Water Temperature InfluenceIf the leaving water temperature of the evaporative

heat exchanger is within 5.6°C of the freeze setpoint,

the previously mentioned 30 second delay will begin to

be proportionately reduced, ending at a 1 second delay

when the leaving water temperature is 0.8°C above the

freeze setpoint.

Dual Circuited Heat Exchanger ProtectionA low temperature condition on either refrigerant circuit

will prevent the start of both compressors. If the low

temperature condition exists for 5 minutes when both

compressors are off, a lockout is triggered for both

compressors. However, if for instance both compressors

are operating and circuit 1 experiences a refrigerant

temperature below the freeze detection setpoint such

that compressor 1 is halted, compressor 2 will not be

halted as a result.

Advanced Freeze Detection Operation: “PreFreeze” Alarm

Predictive freeze condition detection:If the refrigerant temperature is within 4.0°C of

the freeze detection setpoint, the predictive freeze

detection algorithm is enabled, and if the logic

determines that a freeze condition is likely to happen

based on current conditions, the compressor of the

involved refrigerant circuit is immediately stopped.

Three (3) such events in 60 minutes will trigger a

compressor lockout that requires a manual reset. In the

absence of such a condition, the compressor is allowed

to operate so that the refrigerant temperature may

eventually be at the threshold of the freeze detection

setpoint. NOTE: This Lockout produces a “Pre Freeze” detection error on the MUI display.

Capacity Limiting

If the leaving water temperature drops to 1.0°C above the

freeze detection setpoint, the lead compressor is halted.

When the leaving water temperature rises to 2.0°C above

the freeze detection setpoint, it will be allowed to resume

operation. This limiting is allowed to repeat indefinitely with

no lockout or indication on the display.

If the leaving water temperature drops to the freeze

detection setpoint, the lag compressor is halted. When the

leaving water temperature rises to 1.0°C above the freeze

detection setpoint, it will be allowed to resume operation.

This limiting is allowed to repeat indefinitely with no lockout

or indication on the display.

High Pressure

The high-pressure switch shall be a normally closed (NC)

switch that monitors the systems refrigerant pressure. If the

input senses the high-pressure switch is open it must disable

the compressor output immediately and count the fault. The

compressor minimum on time does not apply if the high-

pressure switch opens. The compressor will not restart until

the compressor short cycle time delay has been satisfied.

Page 14: Commercial Reversible Chiller - 50 Hz

14

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Envision Controls - FX10 cont.Low Pressure

The low-pressure switch shall be a normally closed (NC)

switch that monitors the systems refrigerant pressure. The

control checks the input 15 seconds before compressor

start up and then ignored for the first 2 minutes after the

compressor output (BO-2) is enabled. If the switch is open

continuously for 30 seconds during compressor operation

the compressor output (BO-2) will be disabled. The

compressor will not restart until the compressor short cycle

time delay has been satisfied.

Alarm Outputs

The control has two alarm outputs, one for each compressor

circuit. These 24VAC outputs are designated as LC1

(compressor 1) and LC2 (compressor2) on the low voltage

terminal board.

Test Mode

By holding the ESC and down arrow keys on the MUI for 5

seconds will put the control into test mode. In test mode

the random start delay and the compressor fixed on delay

time will both be shortened to 5 seconds and the reversing

valve will be allowed to cycle with out shutting down the

compressor. If an MUI is connected to the control LED 8 will

flash and the words “Test Mode Enabled” will be shown on

the LCD display when the control is in test mode. Test mode

will be disabled after a power cycle, 30 minute timeout, or

by holding the ESC and Up arrow keys on the MUI.

Sequence of OperationPower Fail Restart

When the controller is first powered up, the outputs will be

disabled for a random start delay. The delay is provided to

prevent simultaneous starting of multiple heat pumps. Once

the timer expires, the controller will operate normally.

Random Start Delay

This delay will be used after every power failure, as well as

the first time the compressor is started after the control exits

the unoccupied mode or the emergency shutdown mode.

The delay should not be less than 1 second and not longer

than 120 seconds. If the control is in test mode the random

start delay will be shortened to 5 seconds.

Lead Compressor Start Delay Time

The Lead Compressor Fixed On Delay Time will ensure that

the lead compressor output is not enabled for 90 seconds

after the control receives a call to start the compressor. This

delay is adjustable from 30 – 300 seconds over a BAS or a

MUI. If the control is in test mode the Lead Compressor Start

Delay Timer will be shortened to 5 seconds.

Lag Compressor Start Delay Time

The Lag Compressor Fixed On Delay Time will ensure that

the lag compressor output is not enabled for 120 seconds

after the control receives a call to start the compressor. If

the control is in test mode the Lag Compressor Start Delay

Timer will be shortened to 5 seconds.

Compressor Minimum On Delay

The compressor minimum on delay will ensure that the

compressor output is enabled for a minimum of two (2)

minutes each time the compressor output is enabled. This

will apply in every instance except in the event the high

pressure switch is tripped or emergency shutdown then the

compressor output will be disable immediately.

Compressor Minimum Off Delay Time

The compressor minimum time delay will ensure that the

compressor output will not be enabled for a minimum

of five (5) minutes after it is disabled. This allows for

the system refrigerant pressures to equalize after the

compressor is disabled.

Compressor Lead/Lag

Compressor lead/lag is a standard part of the FX10 control

system. The unit is shipped from the factory with lead/

lag enabled. Lead/lag can be activated through the unit

mounted user interface. The default lead/lag time is 24

hours, but can be adjusted through the user interface.

Heating Cycle

The control will position the reversing valve for heating

mode when there is a command on the O/B terminal on the

terminal board. The compressors will be commanded by Y1

and Y2.

Cooling Cycle

The control will position the reversing valve for cooling

mode when there is no command on the O/B terminal on

the terminal board. The compressors will be commanded by

Y1 and Y2.

MUI Alarm History Reporting

If a fault occurs the fault will be recorded in history for

display on the medium user interface in the History Menu.

Each fault type will be displayed in the history menu with a

number between 0 and 3. A reading of 3+ will mean that

fault has occurred more than three times in the past. The

history menu can be cleared with a power cycle only. Alarm

date and time are not included in the history.

Page 15: Commercial Reversible Chiller - 50 Hz

15

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Inputs and Outputs ConfigurationField Selectable Options

Load and Source Freeze Detection SetpointThe freeze detection setpoint input allows you to adjust

the freeze detection setpoint for either the load or source

sides of the heat pump. When the jumper is installed on

BI-5 the load freeze detection setpoint is factory set for

0.6°C. When the jumper on BI-5 is removed the load

freeze detection setpoint will be -9.4°C. When the jumper

is installed on BI-4 the source freeze detection setpoint is

factory set for 0.6°C. When the jumper on BI-4 is removed

the source freeze detection setpoint will be -9.4°C. NOTE: Piping circuit must be antifreeze protected to the set levels or the warranty will be voided.

Envision Controls - FX10 cont.Accessory OutputThe Accessory Output will be energized 90 seconds prior

to the lead compressor output being energized. When

both compressor outputs are turned off the accessory

output will be deactivated immediately. This output is

selectable for normally open or normally closed operation

through the Medium User Interface or through the

Building Automation System.

Control Accessories• A99 Sensor

• MUI (LCD User interface) for diagnostics

and commissioning

• MUIK3 - Panel Mount, Portable

• MUIK4 - Wall Mount

Page 16: Commercial Reversible Chiller - 50 Hz

16

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

The Closed Loop Heat Pump Concept

The basic principle of a water source heat pump is the

transfer of heat into water from the space during cooling,

or the transfer of heat from water into the space during

heating. Extremely high levels of energy efficiency are

achieved as electricity is used only to move heat, not to

produce it. Using a typical WaterFurnace Envision Series,

one unit of electricity will move four to five units of heat.

When multiple water source heat pumps are combined

on a common circulating loop, the ultimate in energy

efficiency is created: The WaterFurnace units on cooling

mode are adding heat to the loop which the units in

heating mode can absorb, thus removing heat from the

area where cooling is needed, recovering and redistributing

that heat for possible utilization elsewhere in the system. In

modern commercial structures, this characteristic of heat

recovery from core area heat generated by lighting, office

equipment, computers, solar radiation, people or other

sources, is an important factor in the high efficiency and

low operating costs of WaterFurnace closed source heat

pump systems.

In the event that a building's net heating and cooling

requirements create loop temperature extremes, Envision

Series units have the extended range capacity and

versatility to maintain a comfortable environment for

all building areas. Excess heat can be stored for later

utilization or be added or removed in one of three ways; by

ground-source heat exchanger loops: plate heat exchangers

connected to other water sources, or conventional cooler/

boiler configurations. Your WaterFurnace representative

has the expertise and computer software to assist in

determining optimum system type for specific applications.

The Closed Loop Advantage

A properly applied water source heat pump system offers

many advantages over other systems. First costs are

low because units can be added to the loop on an "as

needed basis"- perfect for speculative buildings. Installed

costs are low since units are self-contained and can be

located adjacent to the occupied space, requiring minimal

ductwork. Maintenance can be done on individual units

without system shut-down. Conditions remain comfortable

since each unit operates separately, allowing cooling in

one area and heating in another. Tenant spaces can be

finished and added as needed. Power billing to tenants

is also convenient since each unit can be individually

metered: each pays for what each uses. Nighttime and/or

weekend uses of certain areas are possible without heating

or cooling the entire facility. A decentralized system also

means if one unit should fault, the rest of the system will

continue to operate normally, as well as eliminating air

cross-contamination problems and expensive high pressure

duct systems requiring an inefficient electric resistance

reheat mode.

The Envision Approach

There are a number of proven choices in the type of

Envision Series system which would be best for any given

application. Most often considered are:

• Closed Loop/Ground-Source Systems utilize the stable

temperatures of the earth to maintain proper water source

temperatures (via vertical or horizontal closed loop heat

exchangers) for Envision Series extended range heat

pump system. Sizes range from a single unit through many

hundreds of units. When net cooling requirements cause

closed loop water temperatures to rise, heat is dissipated

into the cooler earth through buried high strength plastic

pipe "heat exchangers." Conversely if net space heating

demands cause loop heat absorption beyond that heat

recovered from building core areas, the loop temperature

will fall causing heat to be extracted from the earth. Due

to the extended loop temperatures, BS EN 14511-2 Ground

Loop Heat Pumps are required for this application.

Envision Application Notespp

Supply Water

Return Water

Pumps

EnvisionUnit

EnvisionUnit

EnvisionUnit

EnvisionUnit

EnvisionUnit

EnvisionUnit

Heater/Rejector

Vertical - Closed Loop/Ground Source

Page 17: Commercial Reversible Chiller - 50 Hz

17

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

• Closed Loop/Ground Water Plate Heat ExchangerSystems utilize lake, ocean, well water or other water

sources to maintain closed loop water temperatures in

multi-unit Envision systems. A plate frame heal exchanger

isolates the units from any contaminating effects of the

water source, and allows periodic cleaning of the heat

exchanger during off peak hours.

Operation and benefits are similar to those for ground-

source systems. Due to the extended loop temperatures,

BS EN 14511-2 Ground Loop Heat Pumps are required

for this application. Closed loop plate heat exchanger

systems are applicable in commercial, marine, or industrial

structures where the many benefits of a water source heat

pump system are desired, regardless of whether the load is

heating or cooling dominated.

Because auxiliary equipment such as a fossil fuel boiler

and cooling tower are not required to maintain the loop

temperature, operating and maintenance costs are very low.

Ground-source systems are most applicable in residential

and light commercial buildings where both heating and

cooling are desired, and on larger envelope dominated

structures where core heat recovery will not meet overall

heating loads. Both vertical and horizontally installed

closed-loops can be used. The land space required for the

"heat exchangers" is 2.7-6.8 m2/kW on vertical (drilled)

installations and 20.4-40.8 m2/kW for horizontal (trenched)

installations. Closed loop heat exchangers can be located

under parking areas or even under the building itself.

On large multi-unit systems, sizing the closed loop heat

exchanger to meet only the net heating loads and assisting

in the summer with a closed circuit cooling tower may be

the most cost effective choice.

• Closed Loop/Ground-Source Surface Water Systemsalso utilize the stable temperatures of Surface Water to

maintain proper water source temperatures for Envision

Series extended range heat pump systems. These systems

have all of the advantages of horizontal and vertical closed

loop systems. Due to the extended loop temperatures, BS

EN 14511-2 Ground Water or Ground Loop Heat Pumps are

required for this application.

In cooling dominated structures, the ground-source surface

water systems can be very cost effective especially where

local building codes require water retention ponds for short

term storage of surface run-off. Sizing requirements for

the surface water is a minimum of 13.6 m2/kW of surface

area at a minimum depth of 2.4 m. WaterFumace should be

contacted when designs for heating dominated structures

are required.

Envision Application Notes cont.pp

Surface Water - Closed Loop/Ground Source

Plate Heat Exchanger - Closed Loop/Ground Water

Page 18: Commercial Reversible Chiller - 50 Hz

18

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Envision Application Notes cont.pp

• Closed Loop /Cooler-Boiler Systems utilize a closed heat

recovering loop with multiple water source heat pumps

in the more conventional manner. Typically a boiler is

employed to maintain closed loop temperatures above

15.6°C and a cooling tower to maintain loop temperatures

below 32.2°C. These systems are applicable in medium

to large buildings regardless of whether the load is

heating or cooling dominated. Due to the moderate loop

temperatures, BS EN 14511-2 Water Loop Heat Pumps are

required for this application.

Cooler/Boiler - Closed Loop

Page 19: Commercial Reversible Chiller - 50 Hz

19

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

The following table outlines the water quality guidelines for unit heat exchangers. If these conditions are exceeded, a secondary heat exchanger is required. Failure to supply a secondary heat exchanger where needed will result in a warranty exclusion for primary heat exchanger corrosion or failure.

StrainersThese units must have properly sized strainers upstream of both brazed plate heat exchangers to protect them againstparticles in the fluid. Failure to install proper stainers and perform regular service can result in serious damage to the unit, and cause degraded performance, reduced operating life and failed compressors. Improper installation of the unit (which includes not having proper strainers to protect the heat exchangers) can also result in voiding the warranty.

Field supplied strainers with 420-840 microns arerecommended, with 500 microns being the optimum choice. The strainers selected should have a mesh open area of atleast 39 cm2 for each unit being serviced by the strainer. Usingstrainers with a smaller amount of open area will result in the need for more frequent cleaning.

Strainers should be selected on the basis of acceptable pressure drop, and not on pipe diameter. The strainers selected should have a pressure drop at the nominal flow rate of the units; low enough to be within the pumping capacity of the pump being used.

WARNING: Must have intermediate heat exchanger when used in pool applications.

GeneralReversible chiller systems may be successfully applied in a wide range of commercial and industrial applications. It is the responsibility of the system designer and installing contractor to ensure that acceptable water quality is present and that allapplicable codes have been met in these installations.

Water TreatmentDo not use untreated or improperly treated water. Equipment damage may occur. The use of improperly treated or untreated water in this equipment may result in scaling, erosion, corrosion, algae or slime. The services of a qualified water treatment specialist should be engaged to determine what treatment, if any, is required. The product warranty specifically excludes liability for corrosion, erosion ordeterioration of equipment.

The heat exchangers in the units are 316 stainless steel plates with copper brazing. The water piping in the heat exchanger is steel. There may be other materials in the building’s piping system that the designer may need to take into consideration when deciding the parameters of the water quality.

If an antifreeze or water treatment solution is to be used, the designer should confirm it does not have a detrimental effecton the materials in the system.

Contaminated WaterIn applications where the water quality cannot be held toprescribed limits, the use of a secondary or intermediate heat exchanger is recommended to separate the unit from the contaminated water.

Water Qualityy

Water Quality Guidelines

Material Copper 90/0 10 Cupronickel 316 Stainless Steel

pH Acidity/yy Al// kalinity 7 - 9 7 - 9 7 - 9

ScalingCalcium and

Magnesium Carbonate(Total HaTT rdness)

less than 350 ppm(Total HaTT rdness)

less than 350 ppm(Total HaTT rdness)

less than 350 ppm

Corrosion

Hydrogen SulfideLess than 0.5 ppm (rotten egg

smell appears at 0.5 ppm)10 - 50 ppm Less than 1 ppm

Sulfates Less than 125 ppm Less than 125 ppm Less than 200 ppm

Chlorine Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Chlorides Less than 20 ppm Less than 125 ppm Less than 300 ppm

Carbon Dioxide Less than 50 ppm 10 - 50 ppm 10 - 50 ppm

Ammonia Less than 2 ppm Less than 2 ppm Less than 20 ppm

Ammonia Chloride Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Ammonia Nitrate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Ammonia Hydroxide Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Ammonia Sulfate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Total DiTT ssolved Solids (TDS) Less than 1000 ppm 1000 - 1500 ppm 1000 - 1500 ppm

LSI Index +0.5 to -0.5 +0.5 to -0.5 +0.5 to -0.5

Iron Fouling(Biological Growth)

Iron, FE2+ (Ferrous)Bacterial Iron Potential

< 0.2 ppm < 0.2 ppm < 0.2 ppm

Iron OxideLess than 1 ppm, above thislevel deposition will occur

Less than 1 ppm, above thislevel deposition will occur

Less than 1 ppm, above thislevel deposition will occur

ErosionSuspended Solids

Less than 10 ppm and filteredfor max. of 600 micron size

Less than 10 ppm and filteredfor max. of 600 micron size

Less than 10 ppm and filteredfor max. of 600 micron size

Threshold Velocity(Fresh Water)

< 1.8 m/sec// < 1.8 m/sec// < 1.8 m/sec//

NOTES: Grains = ppm divided by 17mg/L is equivalent to ppm

2/22/12

Page 20: Commercial Reversible Chiller - 50 Hz

20

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Physical Dimensions Without Enclosurey

Dimensional Data for unit without enclosureModel A B C D E F G H J K

020-060 1295 572 965 891 155 432 202 432 285 38

090 1605 572 1270 1067 162 432 354 432 286 39

130 1778 572 1321 1215 166 432 495 432 362 20

All dimensions in mmAll water connections are 2 in. [50.8 mm] Victaulic

9/20/10

A

CB

E

F

G

H

J

D

FRONT RIGHT SIDE BACK

K

TOP

ELECTRICAL(LINE VOLTAGE)

ELECTRICAL(LOW VOLTAGE)

ELECTRICAL(LOW

VOLTAGE)

SOURCE WATER OUT

LOAD WATER IN

SOURCE WATER IN

LOAD WATER OUT

(WATER LINE LOCATIONS)

(090 SHOWN)

Physical Dimensions With Enclosurey

Dimensional Data for unit with enclosureModel A B C D E F G H

020-060 1347 568 965 154 432 202 432 285

090 1620 608 1270 162 432 354 432 301

130 1803 607 1330 166 432 495 432 378

All dimensions in mmAll water connections are 2 in. [50.8 mm] Victaulic

9/20/10

RIGHT SIDE BACKC

A

B

D

E

F

G

HFRONT

TOP

LOAD WATER IN

SOURCE WATER IN

LOAD WATER OUT

SOURCE WATER OUT

ELECTRICAL(LOW VOLTAGE)

ELECTRICAL(LOW VOLTAGE)

(WATER LINE LOCATIONS)

(090 SHOWN)

Page 21: Commercial Reversible Chiller - 50 Hz

21

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Physical Datay

HE

L/s x 4.2*

Reference CalculationsHeating Calculations: Cooling Calculations:

LWT = EWT + HR

L/s x 4.2*LWT = EWT -

NOTE: * When using water. Use 4.1 for 15% methanol/water or Environol solution.

Notes to Performance Data Tables

The following notes apply to all performance data tables:• Three flow rates are shown for each unit. The lowest flow rate shown is used for geothermal open loop/well water

systems with a minimum of 10°C EST. The middle flow rate shown is the minimum geothermal closed loop flow rate.

The highest flow rate shown is optimum for geothermal closed loop systems and the suggested flow rate for boiler/

tower applications.

• Leaving water temperatures below 4°C assumes 15% antifreeze solution.

• Interpolation between ELT, EST, and L/s data is permissible.

• Operation in the gray areas is not recommended.

Electrical Data

Model Rated VoltageVoltageMin/Max

Compressor*Power

Factor**

TotalUnitFLA

MinCircAmp

MaxFuse/HACRMCC RLA LRA

020 380-420/50/3 342/462 13.0 8.3 70.0 16.6 18.7 25

025 380-420/50/3 342/462 15.0 9.6 70.0 19.2 21.6 30

030 380-420/50/3 342/462 16.5 10.6 74.0 21.1 23.8 30

035 380-420/50/3 342/462 19.0 12.2 87.0 24.3 27.4 35

045 380-420/50/3 342/462 19.0 12.2 110.0 0.74 24.3 27.4 35

050 380-420/50/3 342/462 25.0 16.0 110.0 0.74 32.0 36.0 50

060 380-420/50/3 342/462 27.0 19.2 140.0 0.73 34.6 38.9 60

090 380-420/50/3 342/462 39.0 25.0 173.0 0.73 49.9 56.2 80

130 380-420/50/3 342/462 67.0 42.9 250.0 0.72 85.8 96.5 125

* - MCC, RLA, & LRA rating per compressor. Breaker & FLA sized for both compressors. 1/18/12

** - Power Factor at B0/W35 rating condition.

Model ConfigurationSoundPower dBA

CompressorR-410ACharge*

FluidWeight

Total Weight Corner Weights

Type(qty)

Oil Shipping InstalledFrontLeft

RearLeft

Front Right

Rear Right

020Enclosure 62

Scroll (2) PVE 1.8 11.0320 284 61 79 63 81

Frame 71 284 248 52 70 54 72

025Enclosure 62

Scroll (2) PVE 1.8 11.0320 284 61 79 63 81

Frame 71 284 248 52 70 54 72

030Enclosure 62

Scroll (2) POE 1.8 11.0320 284 61 79 63 81

Frame 71 284 248 52 70 54 72

035Enclosure 62

Scroll (2) PVE 2.2 15.0332 297 64 83 66 84

Frame 71 296 261 55 73 57 75

045Enclosure 64

Scroll (2) PVE 2.7 15.0349 313 69 87 70 88

Frame 74 313 277 59 78 56 79

050Enclosure 64

Scroll (2) PVE 3.4 22.0374 339 75 93 76 95

Frame 74 343 307 77 95 78 97

060Enclosure 64

Scroll (2) PVE 3.4 22.0374 339 75 93 76 95

Frame 74 343 307 77 95 78 97

090Enclosure 66

Scroll (2) POE 5.6 29.0510 475 116 119 118 122

Frame 76 437 401 97 101 100 103

130Enclosure 69

Scroll (2) POE 9.6 50.0871 836 158 270 301 142

Frame 79 820 785 146 257 288 129

Weights shown in [kg] 03/06/13

* Refrigerant per circuit in [kg]

Page 22: Commercial Reversible Chiller - 50 Hz

22

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Catalog performance can be corrected for antifreeze use. Please use the following table and note the example given.

Antifreeze Correction ExampleAntifreeze solution is Propylene Glycol 20% by weight for the source and Methanol 10% for the load. Determine the

corrected heating at 0°C source and 30°C load as well as pressure drop at 0°C for an Envision Series NKW030. Also,

determine the corrected cooling at 30°C source and 7°C load.

The corrected heating capacity at 0°C/30°C would be:

28.6 kW x 0.913 x 0.986 = 25.7 kW

The corrected cooling capacity at 30°C/10°C would be:

34.1 kW x 0.969 x 0.961 = 31.8 kW

The corrected pressure drop at 0°C and 2.0 L/s would be:

26.2 kPa x 1.270 = 33.3 kPa

Antifreeze Correction

Antifreeze TypeAntifreeze %

by wt

Heating Cooling PressureDropLoad Source Load Source

EWT - °C 30°C 0°C 7°C 30°C 0°C

Water 0 1.000 1.000 1.000 1.000 1.000

Ethylene Glycol

10 0.991 0.973 0.975 0.991 1.075

20 0.979 0.943 0.946 0.979 1.163

30 0.965 0.917 0.920 0.965 1.225

40 0.955 0.890 0.895 0.955 1.324

50 0.943 0.865 0.870 0.943 1.419

Propylene Glycol

10 0.981 0.958 0.959 0.981 1.130

20 0.969 0.913 0.919 0.969 1.270

30 0.950 0.854 0.866 0.950 1.433

40 0.937 0.813 0.829 0.937 1.614

50 0.922 0.770 0.789 0.922 1.816

Ethanol

10 0.991 0.927 0.941 0.991 1.242

20 0.972 0.887 0.901 0.972 1.343

30 0.947 0.856 0.866 0.947 1.383

40 0.930 0.815 0.826 0.930 1.523

50 0.911 0.779 0.791 0.911 1.639

Methanol

10 0.986 0.957 0.961 0.986 1.127

20 0.970 0.924 0.928 0.970 1.197

30 0.951 0.895 0.897 0.951 1.235

40 0.936 0.863 0.865 0.936 1.323

50 0.920 0.833 0.835 0.920 1.399

WARNING: Gray area represents antifreeze concentrations greater than 35% by weight and should be avoided due to the extreme performance penalty they represent.

Page 23: Commercial Reversible Chiller - 50 Hz

23

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Pressure Dropp

Model L/sPressure Drop

0°CkPa

10°CkPa

20°CkPa

30°CkPa

45°CkPa

020

0.8 5.5 4.1 2.8 1.4 0.7

1.0 11.7 10.3 9.0 6.9 5.5

1.5 18.6 16.5 15.2 13.1 10.3

2.0 26.2 24.8 22.8 21.4 16.5

025

1.0 7.6 6.2 4.8 3.2 2.3

1.5 15.2 13.8 12.4 10.3 8.3

1.8 23.5 22.0 20.1 18.5 14.4

2.3 33.7 32.2 30.3 28.8 22.8

030

1.0 6.9 5.5 3.4 2.1 0.7

1.5 17.2 15.9 13.8 12.4 9.0

2.0 26.2 24.8 22.8 21.4 16.5

2.5 38.6 37.2 35.2 33.8 26.9

035

1.0 4.8 2.8 2.1 0.7 0.7

2.0 10.3 9.0 8.3 6.9 6.2

2.5 21.4 19.3 17.2 15.2 13.1

3.0 36.1 33.1 29.2 26.2 22.8

045

1.5 7.6 6.2 5.5 4.1 3.4

2.0 18.6 17.2 15.2 13.1 11.7

3.0 32.4 29.6 26.2 23.4 20.3

4.0 50.8 46.9 41.1 37.2 32.4

050

1.5 4.8 3.4 2.1 1.4 0.7

2.5 9.7 7.6 6.2 4.8 3.4

3.5 17.2 15.2 13.1 11.0 9.0

4.5 36.0 32.2 29.0 25.8 21.9

060

2.0 6.2 4.1 2.8 1.4 0.7

3.0 15.2 13.1 11.0 9.0 6.9

4.0 29.6 26.2 23.4 20.7 17.2

5.0 44.7 40.0 36.3 32.6 27.9

090

3.0 10.3 9.0 8.3 7.2 6.6

4.5 24.8 23.4 22.1 20.7 19.3

6.0 30.3 28.3 26.2 24.1 22.8

7.5 40.0 37.9 35.9 33.8 31.7

130

4.5 9.7 8.3 6.9 5.5 4.8

7.0 23.4 22.1 20.7 18.6 17.2

8.5 34.5 33.1 31.0 29.0 26.9

11.5 53.1 51.7 48.3 46.2 42.7

2/12/12

Page 24: Commercial Reversible Chiller - 50 Hz

24

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW020 - Performance Data

HeatingSource Load Flow - 0.8 L/s Load Flow - 1.0 L/s Load Flow - 1.5 L/s

EST°C

FlowL/s

ELT°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

0

1.0

15 21.3 21.2 5.0 16.2 4.2 -2.6 20.1 21.3 5.0 16.3 4.3 -2.6 18.4 21.4 4.9 16.5 4.4 -2.6

25 31.2 20.7 5.9 14.8 3.5 -2.3 29.9 20.8 5.9 14.9 3.5 -2.4 28.3 20.9 5.7 15.1 3.6 -2.4

40 46.0 20.0 7.3 12.7 2.7 -2.0 44.8 20.0 7.2 12.8 2.8 -2.0 43.2 20.1 7.1 13.0 2.9 -2.1

50 55.8 19.5 8.2 11.2 2.4 -1.8 54.6 19.5 8.2 11.4 2.4 -1.8 53.1 19.6 7.9 11.7 2.5 -1.9

1.5

15 21.7 22.4 5.1 17.3 4.4 -2.3 20.3 22.4 5.0 17.4 4.5 -2.3 18.6 22.5 4.9 17.6 4.6 -2.3

25 31.5 21.7 6.0 15.7 3.6 -2.1 30.2 21.8 5.9 15.8 3.7 -2.1 28.5 21.8 5.8 16.1 3.8 -2.1

40 46.2 20.8 7.4 13.4 2.8 -1.8 44.9 20.8 7.3 13.5 2.8 -1.8 43.3 20.9 7.1 13.7 2.9 -1.8

50 56.0 20.1 8.3 11.8 2.4 -1.6 54.8 20.1 8.2 11.9 2.4 -1.6 53.2 20.2 8.0 12.2 2.5 -1.6

10

0.8

15 23.1 26.4 5.4 21.0 4.9 4.9 21.4 26.4 5.4 21.1 4.9 4.9 19.3 26.5 5.1 21.4 5.2 4.8

25 32.9 25.9 6.3 19.6 4.1 5.2 31.3 25.9 6.2 19.7 4.2 5.2 29.2 26.0 6.0 20.1 4.4 5.1

40 47.7 25.1 7.6 17.5 3.3 5.7 46.1 25.2 7.5 17.7 3.4 5.7 44.1 25.3 7.2 18.0 3.5 5.6

50 57.5 24.6 8.5 16.1 2.9 6.1 56.0 24.7 8.4 16.3 2.9 6.0 54.0 24.8 8.1 16.7 3.1 5.9

1.0

15 23.2 27.0 5.5 21.5 4.9 6.5 21.6 27.0 5.4 21.7 5.0 6.5 19.4 27.1 5.2 22.0 5.2 6.4

25 33.1 26.4 6.3 20.1 4.2 6.7 31.4 26.4 6.2 20.2 4.2 6.7 29.3 26.5 6.0 20.5 4.4 6.7

40 47.8 25.5 7.7 17.9 3.3 7.1 46.2 25.6 7.5 18.0 3.4 7.1 44.2 25.7 7.3 18.4 3.5 7.0

50 57.6 25.0 8.5 16.4 2.9 7.3 56.1 25.0 8.4 16.6 3.0 7.3 54.1 25.1 8.1 17.0 3.1 7.2

1.5

15 23.7 28.4 5.5 22.9 5.2 6.9 21.9 28.5 5.4 23.0 5.2 6.9 19.6 28.6 5.2 23.4 5.5 6.8

25 33.4 27.7 6.4 21.3 4.3 7.1 31.8 27.7 6.3 21.4 4.4 7.1 29.5 27.8 6.1 21.7 4.6 7.1

40 48.1 26.5 7.7 18.8 3.4 7.5 46.5 26.5 7.6 18.9 3.5 7.4 44.3 26.6 7.3 19.3 3.6 7.4

50 57.8 25.7 8.6 17.1 3.0 7.7 56.3 25.8 8.5 17.3 3.0 7.7 54.2 25.9 8.2 17.7 3.2 7.6

20

0.8

15 24.8 32.0 5.6 26.3 5.7 13.6 22.8 32.0 5.6 26.5 5.8 13.5 20.2 32.2 5.4 26.8 6.0 13.5

25 34.6 31.4 6.5 24.9 4.8 13.9 32.7 31.5 6.4 25.0 4.9 13.9 30.1 31.6 6.2 25.4 5.1 13.8

40 49.3 30.6 7.9 22.7 3.9 14.5 47.5 30.6 7.7 22.9 4.0 14.4 45.0 30.7 7.4 23.3 4.1 14.3

50 59.1 30.0 8.7 21.3 3.4 14.8 57.3 30.1 8.6 21.4 3.5 14.8 54.9 30.2 8.3 21.9 3.6 14.7

1.0

15 25.0 32.7 5.7 27.0 5.8 15.6 23.0 32.7 5.6 27.1 5.9 15.6 20.3 32.8 5.4 27.5 6.1 15.5

25 34.8 32.0 6.6 25.5 4.9 15.9 32.8 32.1 6.5 25.6 5.0 15.8 30.2 32.2 6.2 26.0 5.2 15.8

40 49.5 31.0 7.9 23.1 3.9 16.2 47.6 31.1 7.8 23.3 4.0 16.2 45.1 31.2 7.5 23.7 4.2 16.1

50 59.3 30.4 8.8 21.6 3.5 16.5 57.4 30.4 8.6 21.8 3.5 16.5 55.0 30.5 8.3 22.2 3.7 16.4

1.5

15 25.5 34.4 5.7 28.7 6.0 16.1 23.4 34.5 5.6 28.8 6.1 16.1 20.6 34.6 5.4 29.1 6.4 16.1

25 35.2 33.5 6.6 26.9 5.1 16.4 33.2 33.6 6.5 27.0 5.1 16.3 30.5 33.7 6.3 27.4 5.4 16.3

40 49.8 32.2 8.0 24.2 4.0 16.7 47.9 32.2 7.8 24.4 4.1 16.7 45.3 32.3 7.5 24.8 4.3 16.6

50 59.5 31.3 8.8 22.4 3.5 17.0 57.6 31.3 8.7 22.6 3.6 16.9 55.1 31.4 8.4 23.0 3.7 16.9

30

0.8

15 25.7 35.2 6.0 29.2 5.9 22.9 23.6 35.2 5.9 29.4 6.0 22.8 20.8 35.4 5.6 29.7 6.3 22.8

25 35.6 34.8 6.8 28.0 5.1 23.2 33.5 34.8 6.7 28.1 5.2 23.1 30.7 35.0 6.5 28.5 5.4 23.1

40Operation not recommended

50

1.0

15 26.0 36.0 6.0 30.0 6.0 25.1 23.8 36.0 5.9 30.1 6.1 25.1 20.9 36.1 5.7 30.5 6.4 25.0

25 35.8 35.4 6.9 28.6 5.2 25.4 33.7 35.5 6.8 28.7 5.3 25.3 30.8 35.6 6.5 29.1 5.5 25.3

40Operation not recommended

50

1.5

15 26.5 37.8 6.0 31.8 6.3 25.7 24.2 37.9 6.0 31.9 6.4 25.7 21.2 38.0 5.7 32.3 6.6 25.6

25 36.3 37.1 6.9 30.2 5.4 25.9 34.1 37.1 6.8 30.3 5.4 25.9 31.1 37.3 6.6 30.7 5.7 25.8

40Operation not recommended

50

NOTE: For part load operation, divide capacity by 2. 3/15/13

Page 25: Commercial Reversible Chiller - 50 Hz

25

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW020 - Performance Data cont.

CoolingSource Load Flow - 0.8 L/s Load Flow - 1.0 L/s Load Flow - 1.5 L/s

EST°C

FlowL/s

ELT°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

0

0.8

10 1.6 27.5 3.5 31.0 7.8 7.6 3.2 28.0 3.5 31.5 7.9 7.7 5.2 29.3 3.6 32.8 8.2 8.0

20 8.5 37.8 3.6 41.4 10.5 10.1 10.6 38.5 3.6 42.1 10.7 10.3 13.5 40.2 3.6 43.9 11.1 10.7

30 15.3 48.1 3.7 51.8 13.1 12.6 18.0 49.0 3.7 52.7 13.3 12.9 21.7 51.2 3.7 54.9 13.8 13.4

45 25.6 63.6 3.8 67.4 16.8 16.4 29.2 64.8 3.8 68.6 17.0 16.7 34.0 67.7 3.8 71.5 17.7 17.4

1.0

10 1.5 27.7 3.4 31.2 8.1 5.1 3.1 28.2 3.5 31.7 8.2 5.2 5.2 29.5 3.5 33.0 8.5 5.4

20 8.4 38.1 3.5 41.6 10.9 6.8 10.5 38.8 3.5 42.3 11.0 6.9 13.4 40.6 3.5 44.1 11.4 7.2

30 15.2 48.5 3.6 52.1 13.5 8.5 17.9 49.4 3.6 53.0 13.7 8.6 21.6 51.6 3.6 55.2 14.3 9.0

45 25.4 64.1 3.7 67.8 17.4 11.0 29.1 65.3 3.7 69.0 17.6 11.2 33.9 68.2 3.7 72.0 18.3 11.7

1.5

10 1.4 28.3 3.2 31.5 8.7 4.3 3.0 28.8 3.3 32.0 8.8 4.3 5.1 30.1 3.3 33.4 9.2 4.5

20 8.1 38.9 3.3 42.2 11.8 5.7 10.3 39.6 3.3 42.9 11.9 5.8 13.3 41.4 3.3 44.7 12.4 6.1

30 14.9 49.5 3.4 52.8 14.7 7.2 17.7 50.4 3.4 53.8 14.9 7.3 21.4 52.6 3.4 56.0 15.5 7.6

45 25.1 65.4 3.4 68.8 19.0 9.3 28.8 66.6 3.5 70.0 19.3 9.5 33.7 69.6 3.5 73.0 20.0 9.9

10

0.8

10 1.7 27.2 4.5 31.7 6.0 17.7 3.2 27.7 4.5 32.3 6.1 17.9 5.3 29.0 4.6 33.5 6.4 18.2

20 8.4 38.0 4.6 42.6 8.2 20.4 10.6 38.7 4.6 43.3 8.3 20.6 13.4 40.4 4.7 45.1 8.6 21.0

30 15.1 48.8 4.7 53.5 10.3 23.1 17.9 49.7 4.8 54.4 10.4 23.3 21.6 51.9 4.8 56.7 10.8 23.8

45 25.2 64.9 4.9 69.8 13.2 27.0 28.9 66.1 4.9 71.0 13.4 27.3 33.8 69.1 5.0 74.0 13.9 28.1

1.0

10 1.6 27.5 4.4 31.9 6.2 15.2 3.2 28.0 4.4 32.4 6.3 15.3 5.3 29.2 4.5 33.7 6.6 15.5

20 8.3 38.3 4.5 42.8 8.5 17.0 10.5 39.0 4.5 43.5 8.6 17.1 13.4 40.8 4.6 45.3 8.9 17.4

30 15.0 49.2 4.6 53.8 10.6 18.7 17.8 50.1 4.6 54.7 10.8 18.9 21.5 52.3 4.7 57.0 11.2 19.3

45 25.0 65.4 4.8 70.2 13.7 21.4 28.7 66.6 4.8 71.4 13.9 21.6 33.7 69.6 4.8 74.5 14.4 22.1

1.5

10 1.5 28.0 4.2 32.2 6.7 14.4 3.0 28.5 4.2 32.7 6.8 14.4 5.2 29.8 4.2 34.0 7.1 14.6

20 8.1 39.1 4.3 43.3 9.2 15.9 10.3 39.8 4.3 44.0 9.3 16.0 13.2 41.6 4.3 45.8 9.7 16.2

30 14.7 50.1 4.3 54.5 11.5 17.4 17.6 51.0 4.4 55.4 11.7 17.5 21.3 53.3 4.4 57.7 12.2 17.8

45 24.7 66.7 4.5 71.2 14.9 19.6 28.4 67.9 4.5 72.4 15.1 19.8 33.5 71.0 4.5 75.5 15.7 20.2

20

0.8

10 2.2 25.5 5.5 31.0 4.7 27.6 3.7 26.0 5.5 31.5 4.7 27.7 5.6 27.1 5.5 32.7 4.9 28.0

20 9.1 35.7 5.6 41.3 6.4 30.1 11.1 36.3 5.6 41.9 6.5 30.2 13.8 37.9 5.7 43.6 6.7 30.6

30 16.0 45.8 5.8 51.6 8.0 32.6 18.6 46.6 5.8 52.4 8.1 32.8 22.1 48.7 5.8 54.5 8.4 33.3

45 Operation not recommended

1.0

10 2.2 25.7 5.3 31.0 4.8 25.0 3.6 26.2 5.4 31.5 4.9 25.1 5.6 27.3 5.4 32.7 5.1 25.3

20 9.1 35.9 5.5 41.4 6.5 26.7 10.7 38.3 5.5 43.8 6.9 27.1 13.8 38.2 5.5 43.7 6.9 27.1

30 16.0 46.1 5.6 51.7 8.2 28.4 17.7 50.4 5.7 56.1 8.9 29.1 22.0 49.0 5.7 54.7 8.6 28.9

45 Operation not recommended

1.5

10 2.0 26.1 5.0 31.2 5.2 24.2 3.5 26.6 5.1 31.7 5.3 24.3 5.5 27.8 5.1 32.9 5.4 24.5

20 8.9 36.4 5.2 41.6 7.1 25.6 10.9 37.1 5.2 42.3 7.2 25.7 13.7 38.8 5.2 44.0 7.4 26.0

30 15.7 46.8 5.3 52.0 8.9 27.1 18.4 47.6 5.3 52.9 9.0 27.2 21.9 49.8 5.3 55.1 9.4 27.5

45 Operation not recommended

30

0.8

10 3.1 22.7 6.7 29.4 3.4 37.2 4.4 23.1 6.7 29.8 3.5 37.3 6.1 24.2 6.7 30.9 3.6 37.5

20 10.3 31.8 6.8 38.6 4.7 39.4 11.7 34.0 6.9 40.8 4.9 40.0 14.5 33.9 6.9 40.7 4.9 39.9

30 17.5 40.9 7.0 47.9 5.9 41.7 19.1 44.8 7.0 51.8 6.4 42.6 22.9 43.6 7.0 50.6 6.2 42.3

45 Operation not recommended

1.0

10 3.0 22.9 6.5 29.4 3.5 34.8 4.3 23.3 6.5 29.8 3.6 34.8 6.0 24.3 6.6 30.9 3.7 35.0

20 10.2 32.1 6.7 38.7 4.8 36.3 11.7 34.2 6.7 40.9 5.1 36.7 14.5 34.1 6.7 40.8 5.1 36.6

30 17.4 41.3 6.8 48.1 6.1 37.8 19.0 45.2 6.9 52.0 6.6 38.5 22.9 43.9 6.9 50.8 6.4 38.3

45 Operation not recommended

1.5

10 2.9 23.2 6.2 29.4 3.8 34.0 4.2 23.6 6.2 29.8 3.8 34.0 6.0 24.7 6.2 30.9 4.0 34.2

20 10.0 32.7 6.3 38.9 5.2 35.3 11.5 34.9 6.3 41.2 5.5 35.6 14.3 34.8 6.3 41.1 5.5 35.6

30 17.2 42.1 6.4 48.5 6.6 36.6 18.8 46.1 6.4 52.5 7.2 37.1 22.7 44.8 6.4 51.3 7.0 36.9

45 Operation not recommended

45

0.8

10 4.3 18.8 8.1 26.9 2.3 51.6 5.3 19.2 8.1 27.3 2.4 51.7 6.7 20.0 8.2 28.2 2.4 51.9

20 11.7 27.3 8.2 35.6 3.3 53.7 12.9 29.3 8.3 37.6 3.5 54.2 15.3 29.1 8.3 37.4 3.5 54.1

30Operation not recommended

45

1.0

10 4.2 19.0 7.9 26.9 2.4 49.4 5.3 19.3 7.9 27.3 2.4 49.4 6.7 20.2 8.0 28.2 2.5 49.6

20 11.6 27.5 8.1 35.6 3.4 50.8 12.8 29.5 8.1 37.6 3.6 51.1 15.2 29.3 8.1 37.4 3.6 51.1

30Operation not recommended

45

1.5

10 4.1 19.3 7.5 26.8 2.6 48.6 5.2 19.6 7.5 27.1 2.6 48.7 6.7 20.5 7.6 28.1 2.7 48.8

20 11.5 27.9 7.6 35.5 3.7 49.8 12.7 29.9 7.7 37.6 3.9 50.1 15.2 29.7 7.7 37.4 3.9 50.1

30Operation not recommended

45

NOTE: For part load operation, divide capacity by 2. 2/2/12

Page 26: Commercial Reversible Chiller - 50 Hz

26

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW025 - Performance Data

HeatingSource Load Flow - 1.0 L/s Load Flow - 1.5 L/s Load Flow - 1.8 L/s

EST°C

FlowL/s

ELT°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST

°C

0

1.5

15 21.2 26.0 6.2 19.9 4.2 -3.2 19.1 26.1 6.0 20.1 4.3 -3.2 18.5 26.2 6.0 20.2 4.4 -3.2

25 31.0 25.4 7.5 17.9 3.4 -2.8 29.0 25.5 7.3 18.2 3.5 -2.9 28.4 25.5 7.2 18.3 3.5 -2.9

40 45.8 24.4 9.4 15.0 2.6 -2.4 43.9 24.4 9.2 15.3 2.7 -2.4 43.2 24.5 9.0 15.5 2.7 -2.5

50 55.6 23.7 10.7 13.0 2.2 -2.1 53.8 23.8 10.4 13.4 2.3 -2.1 53.2 23.8 10.3 13.6 2.3 -2.2

1.8

15 21.4 26.8 6.2 20.6 4.3 -2.7 19.3 26.8 6.1 20.8 4.4 -2.7 18.6 26.9 6.0 20.9 4.5 -2.8

25 31.2 26.0 7.5 18.5 3.5 -2.4 29.1 26.1 7.3 18.8 3.6 -2.5 28.5 26.1 7.2 18.9 3.6 -2.5

40 45.9 24.8 9.4 15.4 2.6 -2.0 44.0 24.9 9.2 15.7 2.7 -2.1 43.3 25.0 9.1 15.9 2.8 -2.1

50 55.7 24.1 10.7 13.4 2.2 -1.8 53.8 24.2 10.5 13.7 2.3 -1.8 53.2 24.2 10.3 13.9 2.3 -1.8

10

1.0

15 22.7 31.6 6.7 24.9 4.7 3.9 20.1 31.7 6.4 25.2 4.9 3.8 19.3 31.7 6.3 25.4 5.0 3.8

25 32.6 31.0 7.9 23.1 3.9 4.4 30.1 31.1 7.6 23.5 4.1 4.3 29.2 31.1 7.5 23.7 4.2 4.2

40 47.3 30.1 9.7 20.4 3.1 5.0 44.9 30.2 9.4 20.8 3.2 4.9 44.1 30.3 9.2 21.0 3.3 4.9

50 57.2 29.5 10.9 18.6 2.7 5.5 54.8 29.6 10.6 19.0 2.8 5.4 54.0 29.7 10.4 19.3 2.9 5.3

1.5

15 23.1 33.1 6.7 26.4 4.9 5.7 20.4 33.2 6.5 26.7 5.1 5.7 19.5 33.2 6.4 26.9 5.2 5.6

25 32.9 32.3 7.9 24.4 4.1 6.0 30.3 32.4 7.7 24.7 4.2 6.0 29.4 32.5 7.5 24.9 4.3 5.9

40 47.6 31.1 9.8 21.3 3.2 6.5 45.1 31.2 9.5 21.7 3.3 6.5 44.2 31.3 9.3 22.0 3.4 6.4

50 57.4 30.3 11.0 19.3 2.7 6.9 54.9 30.4 10.7 19.8 2.9 6.8 54.1 30.5 10.5 20.0 2.9 6.7

1.8

15 23.3 34.0 6.7 27.3 5.0 6.3 20.5 34.1 6.5 27.6 5.2 6.3 19.6 34.2 6.4 27.8 5.3 6.2

25 33.1 33.1 8.0 25.1 4.1 6.6 30.4 33.2 7.7 25.5 4.3 6.5 29.5 33.3 7.6 25.7 4.4 6.5

40 47.7 31.7 9.8 21.9 3.2 7.0 45.2 31.8 9.5 22.3 3.3 7.0 44.3 31.9 9.3 22.6 3.4 6.9

50 57.5 30.8 11.1 19.7 2.8 7.3 55.0 30.9 10.7 20.2 2.9 7.3 54.2 31.0 10.5 20.5 2.9 7.2

20

1.0

15 24.3 38.3 6.9 31.3 5.5 12.4 21.2 38.4 6.7 31.7 5.7 12.3 20.2 38.4 6.6 31.9 5.9 12.2

25 34.2 37.6 8.2 29.4 4.6 12.8 31.1 37.7 7.9 29.8 4.8 12.7 30.1 37.8 7.7 30.1 4.9 12.7

40 48.9 36.6 10.0 26.6 3.7 13.5 46.0 36.7 9.7 27.0 3.8 13.4 45.0 36.8 9.5 27.3 3.9 13.3

50 58.8 35.9 11.2 24.7 3.2 14.0 55.9 36.1 10.9 25.2 3.3 13.9 54.9 36.1 10.7 25.5 3.4 13.8

1.5

15 24.8 40.1 7.0 33.1 5.7 14.6 21.5 40.2 6.7 33.4 6.0 14.6 20.5 40.3 6.6 33.6 6.1 14.5

25 34.5 39.1 8.2 30.9 4.8 15.0 31.4 39.3 8.0 31.3 4.9 14.9 30.3 39.3 7.8 31.5 5.0 14.9

40 49.2 37.8 10.1 27.7 3.7 15.5 46.2 37.9 9.8 28.1 3.9 15.4 45.1 38.0 9.6 28.4 4.0 15.4

50 59.0 36.9 11.3 25.5 3.3 15.8 56.0 37.0 11.0 26.0 3.4 15.8 55.0 37.1 10.7 26.3 3.4 15.7

1.8

15 25.0 41.1 7.0 34.1 5.9 15.4 21.7 41.3 6.8 34.5 6.1 15.3 20.6 41.3 6.6 34.7 6.2 15.3

25 34.8 40.1 8.3 31.8 4.9 15.7 31.5 40.2 8.0 32.2 5.0 15.6 30.5 40.3 7.8 32.4 5.1 15.6

40 49.4 38.5 10.1 28.4 3.8 16.2 46.3 38.6 9.8 28.8 3.9 16.1 45.2 38.7 9.6 29.1 4.0 16.1

50 59.1 37.4 11.4 26.1 3.3 16.5 56.1 37.6 11.0 26.5 3.4 16.4 55.1 37.6 10.8 26.8 3.5 16.4

30

1.0

15 25.3 42.1 7.3 34.8 5.8 21.5 21.9 42.2 7.1 35.1 6.0 21.4 20.7 42.3 6.9 35.4 6.1 21.4

25 35.1 41.6 8.5 33.1 4.9 21.9 31.8 41.7 8.3 33.5 5.1 21.8 30.7 41.8 8.1 33.7 5.2 21.8

40Operation not recommended

50

1.5

15 25.7 44.1 7.4 36.7 6.0 24.0 22.2 44.2 7.1 37.1 6.2 24.0 21.0 44.3 7.0 37.3 6.3 23.9

25 35.6 43.3 8.6 34.7 5.0 24.4 32.1 43.5 8.3 35.1 5.2 24.3 30.9 43.5 8.2 35.4 5.3 24.2

40Operation not recommended

50

1.8

15 26.0 45.2 7.4 37.8 6.1 24.9 22.4 45.4 7.2 38.2 6.3 24.8 21.2 45.5 7.0 38.5 6.5 24.8

25 35.8 44.4 8.6 35.7 5.1 25.2 32.2 44.5 8.4 36.1 5.3 25.1 31.0 44.6 8.2 36.4 5.4 25.1

40Operation not recommended

50

NOTE: For part load operation, divide capacity by 2. 3/15/13

Page 27: Commercial Reversible Chiller - 50 Hz

27

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW025 - Performance Data cont.

CoolingSource Load Flow - 1.0 L/s Load Flow - 1.5 L/s Load Flow - 1.8 L/s

EST°C

FlowL/s

ELT°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

0

1.0

10 1.8 33.7 4.3 38.1 7.8 9.3 4.3 35.1 4.3 39.4 8.1 9.6 5.1 35.9 4.4 40.3 8.2 9.8

20 8.7 46.2 4.4 50.6 10.5 12.3 12.2 48.0 4.4 52.4 10.9 12.8 13.3 49.1 4.4 53.6 11.1 13.1

30 15.7 58.6 4.4 63.1 13.2 15.4 20.1 61.0 4.5 65.4 13.6 16.0 21.5 62.4 4.5 66.8 13.9 16.3

45 26.2 77.3 4.5 81.8 17.0 20.0 31.9 80.4 4.6 84.9 17.6 20.7 33.9 82.2 4.6 86.8 17.9 21.2

1.5

10 1.6 34.3 4.1 38.4 8.4 6.3 4.2 35.7 4.1 39.8 8.6 6.5 5.1 36.5 4.2 40.7 8.8 6.6

20 8.5 47.0 4.2 51.1 11.3 8.3 12.1 48.9 4.2 53.0 11.7 8.6 13.2 50.0 4.2 54.2 11.9 8.8

30 15.5 59.6 4.2 63.8 14.2 10.4 19.9 62.0 4.2 66.2 14.7 10.8 21.4 63.4 4.2 67.7 14.9 11.0

45 25.8 78.6 4.3 82.9 18.4 13.5 31.7 81.8 4.3 86.1 19.0 14.0 33.7 83.6 4.3 88.0 19.4 14.3

1.8

10 1.5 34.7 4.0 38.7 8.7 5.2 4.1 36.1 4.0 40.1 9.0 5.4 5.0 36.9 4.0 40.9 9.2 5.5

20 8.4 47.5 4.0 51.5 11.8 7.0 12.0 49.4 4.1 53.4 12.2 7.2 13.2 50.5 4.1 54.6 12.4 7.4

30 15.3 60.2 4.1 64.3 14.8 8.7 19.8 62.6 4.1 66.7 15.3 9.0 21.3 64.1 4.1 68.2 15.6 9.2

45 25.6 79.4 4.1 83.5 19.3 11.3 31.6 82.6 4.1 86.7 19.9 11.8 33.6 84.5 4.2 88.7 20.3 12.0

10

1.0

10 1.9 33.4 5.5 38.9 6.0 19.5 4.4 34.7 5.6 40.3 6.2 19.8 5.2 35.5 5.6 41.1 6.4 20.0

20 8.7 46.4 5.6 52.0 8.2 22.7 12.2 48.2 5.7 53.9 8.5 23.2 13.3 49.4 5.7 55.0 8.7 23.4

30 15.5 59.4 5.7 65.1 10.3 25.9 20.0 61.7 5.8 67.5 10.7 26.5 21.4 63.2 5.8 69.0 10.9 26.8

45 25.8 78.9 5.9 84.7 13.4 30.7 31.7 82.0 5.9 87.9 13.8 31.4 33.6 83.9 6.0 89.8 14.1 31.9

1.5

10 1.7 34.0 5.3 39.3 6.5 16.4 4.3 35.3 5.3 40.7 6.7 16.6 5.1 36.2 5.3 41.5 6.8 16.7

20 8.5 47.2 5.4 52.6 8.8 18.5 12.0 49.1 5.4 54.5 9.1 18.9 13.2 50.2 5.4 55.6 9.3 19.0

30 15.3 60.4 5.4 65.8 11.1 20.7 19.8 62.8 5.5 68.3 11.5 21.1 21.3 64.3 5.5 69.8 11.7 21.3

45 25.4 80.2 5.6 85.8 14.4 23.9 31.4 83.4 5.6 89.0 14.9 24.5 33.4 85.3 5.6 91.0 15.2 24.8

1.8

10 1.6 34.3 5.1 39.4 6.7 15.3 4.2 35.7 5.1 40.9 6.9 15.5 5.0 36.5 5.2 41.7 7.1 15.6

20 8.4 47.7 5.2 52.9 9.2 17.2 11.9 49.6 5.2 54.8 9.5 17.4 13.1 50.7 5.2 56.0 9.7 17.6

30 15.1 61.0 5.3 66.3 11.6 19.0 19.7 63.5 5.3 68.7 12.0 19.3 21.2 64.9 5.3 70.2 12.2 19.5

45 25.2 81.0 5.4 86.4 15.1 21.7 31.3 84.3 5.4 89.7 15.6 22.1 33.3 86.2 5.4 91.6 15.9 22.4

20

1.0

10 2.4 31.3 6.7 38.0 4.7 29.3 4.7 32.6 6.8 39.3 4.8 29.6 5.5 33.3 6.8 40.1 4.9 29.8

20 9.4 43.5 6.8 50.4 6.4 32.3 12.6 45.3 6.9 52.1 6.6 32.7 13.7 46.3 6.9 53.2 6.7 33.0

30 16.4 55.8 7.0 62.7 8.0 35.3 20.6 58.0 7.0 65.0 8.3 35.9 22.0 59.3 7.0 66.3 8.4 36.2

45 Operation not recommended

1.5

10 2.3 31.8 6.4 38.2 5.0 26.2 4.6 33.0 6.4 39.5 5.1 26.4 5.4 33.8 6.5 40.2 5.2 26.5

20 9.2 44.1 6.5 50.6 6.8 28.2 12.2 48.0 6.5 54.6 7.3 28.9 13.6 47.0 6.6 53.5 7.2 28.7

30 16.2 56.5 6.6 63.1 8.6 30.3 19.7 63.0 6.7 69.7 9.5 31.3 21.9 60.1 6.7 66.8 9.0 30.9

45 Operation not recommended

1.8

10 2.2 32.0 6.2 38.2 5.2 25.2 4.6 33.3 6.2 39.6 5.3 25.4 5.4 34.1 6.3 40.3 5.4 25.5

20 9.1 44.5 6.3 50.8 7.1 26.9 12.5 46.3 6.3 52.6 7.3 27.1 13.6 47.3 6.3 53.7 7.5 27.3

30 16.1 56.9 6.4 63.3 8.9 28.6 20.4 59.2 6.4 65.6 9.2 28.9 21.8 60.6 6.4 67.0 9.4 29.1

45 Operation not recommended

30

1.0

10 3.2 27.9 8.2 36.0 3.4 38.8 5.3 29.0 8.2 37.2 3.5 39.1 6.0 29.6 8.3 37.9 3.6 39.2

20 10.6 38.7 8.3 47.0 4.7 41.5 13.2 42.1 8.4 50.4 5.0 42.3 14.4 41.1 8.4 49.5 4.9 42.1

30 17.9 49.5 8.4 57.9 5.9 44.1 21.0 55.2 8.5 63.7 6.5 45.5 22.9 52.6 8.5 61.1 6.2 44.9

45 Operation not recommended

1.5

10 3.1 28.2 7.8 36.0 3.6 35.9 5.2 29.4 7.8 37.2 3.7 36.1 5.9 30.1 7.9 37.9 3.8 36.2

20 10.4 39.3 7.9 47.2 5.0 37.7 13.0 42.8 7.9 50.7 5.4 38.2 14.3 41.8 8.0 49.8 5.3 38.1

30 17.7 50.3 8.0 58.3 6.3 39.5 20.9 56.2 8.1 64.2 7.0 40.4 22.7 53.6 8.1 61.6 6.6 40.0

45 Operation not recommended

1.8

10 3.1 28.5 7.6 36.0 3.8 34.9 5.2 29.6 7.6 37.2 3.9 35.0 5.9 30.3 7.6 37.9 4.0 35.1

20 10.3 39.7 7.6 47.3 5.2 36.4 13.0 43.2 7.7 50.9 5.6 36.9 14.3 42.2 7.7 49.9 5.5 36.8

30 17.6 50.9 7.7 58.6 6.6 37.9 20.8 56.8 7.8 64.6 7.3 38.7 22.7 54.1 7.8 61.9 7.0 38.4

45 Operation not recommended

45

1.0

10 4.4 23.1 9.9 33.1 2.3 53.1 6.1 24.0 10.0 34.0 2.4 53.3 6.7 24.6 10.0 34.6 2.4 53.4

20 11.9 33.2 10.0 43.2 3.3 55.5 14.1 36.3 10.1 46.4 3.6 56.3 15.2 35.3 10.1 45.5 3.5 56.1

30Operation not recommended

45

1.5

10 4.3 23.4 9.5 32.9 2.5 50.4 6.0 24.4 9.5 33.9 2.6 50.5 6.6 24.9 9.6 34.5 2.6 50.6

20 11.8 33.6 9.6 43.2 3.5 52.0 14.0 36.7 9.6 46.4 3.8 52.5 15.2 35.8 9.7 45.4 3.7 52.4

30Operation not recommended

45

1.8

10 4.2 23.6 9.2 32.8 2.6 49.4 6.0 24.6 9.2 33.8 2.7 49.6 6.6 25.1 9.3 34.4 2.7 49.7

20 11.7 33.9 9.3 43.2 3.7 50.8 14.0 37.0 9.3 46.4 4.0 51.3 15.1 36.1 9.4 45.4 3.9 51.2

30Operation not recommended

45

NOTE: For part load operation, divide capacity by 2. 2/2/12

Page 28: Commercial Reversible Chiller - 50 Hz

28

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW030 - Performance Data

HeatingSource Load Flow - 1.0 L/s Load Flow - 1.5 L/s Load Flow - 2.0 L/s

EST°C

FlowL/s

ELT°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

0

1.5

15 21.8 28.7 7.2 21.5 4.0 -3.4 19.6 28.8 7.1 21.7 4.1 -3.4 18.4 28.8 7.0 21.9 4.1 -3.5

25 31.7 28.0 8.5 19.5 3.3 -3.1 29.5 28.0 8.3 19.7 3.4 -3.1 28.3 28.1 8.2 19.9 3.4 -3.2

40 46.4 26.9 10.4 16.5 2.6 -2.6 44.3 27.0 10.2 16.8 2.6 -2.7 43.2 27.0 10.0 17.0 2.7 -2.7

50 56.2 26.2 11.7 14.5 2.2 -2.3 54.2 26.3 11.5 14.8 2.3 -2.4 53.1 26.3 11.2 15.1 2.3 -2.4

2.0

15 22.1 29.8 7.2 22.5 4.1 -2.7 19.7 29.8 7.1 22.7 4.2 -2.7 18.6 29.9 7.0 22.9 4.3 -2.7

25 31.9 28.9 8.5 20.4 3.4 -2.4 29.6 29.0 8.4 20.6 3.5 -2.5 28.5 29.0 8.2 20.8 3.5 -2.5

40 46.6 27.6 10.5 17.2 2.6 -2.0 44.4 27.7 10.3 17.4 2.7 -2.1 43.3 27.8 10.1 17.7 2.8 -2.1

50 56.4 26.8 11.8 15.0 2.3 -1.8 54.3 26.8 11.5 15.3 2.3 -1.8 53.2 26.9 11.3 15.6 2.4 -1.9

10

1.0

15 23.6 35.1 7.8 27.3 4.5 3.3 20.7 35.2 7.6 27.6 4.7 3.3 19.3 35.3 7.4 27.9 4.8 3.2

25 33.4 34.4 9.0 25.5 3.8 3.8 30.6 34.5 8.7 25.8 4.0 3.7 29.2 34.6 8.5 26.1 4.1 3.6

40 48.2 33.5 10.8 22.7 3.1 4.5 45.5 33.6 10.5 23.0 3.2 4.4 44.1 33.6 10.2 23.4 3.3 4.3

50 58.0 32.8 12.0 20.8 2.7 4.9 55.4 32.9 11.7 21.2 2.8 4.8 54.0 33.0 11.4 21.6 2.9 4.7

1.5

15 23.9 36.4 7.8 28.6 4.7 5.3 20.9 36.5 7.6 28.9 4.8 5.3 19.5 36.6 7.4 29.2 4.9 5.2

25 33.7 35.6 9.0 26.6 3.9 5.7 30.8 35.7 8.8 26.9 4.1 5.6 29.4 35.8 8.6 27.2 4.2 5.6

40 48.4 34.4 10.9 23.5 3.2 6.2 45.6 34.5 10.6 23.9 3.3 6.1 44.2 34.5 10.3 24.2 3.4 6.1

50 58.2 33.5 12.1 21.5 2.8 6.5 55.5 33.6 11.8 21.9 2.9 6.4 54.1 33.7 11.5 22.3 2.9 6.4

2.0

15 24.2 37.8 7.9 29.9 4.8 6.4 21.2 37.9 7.7 30.2 4.9 6.3 19.6 38.0 7.5 30.5 5.1 6.3

25 34.0 36.8 9.1 27.7 4.0 6.6 31.0 36.9 8.9 28.0 4.2 6.6 29.5 37.0 8.6 28.3 4.3 6.5

40 48.6 35.3 10.9 24.3 3.2 7.0 45.7 35.4 10.6 24.7 3.3 7.0 44.3 35.4 10.4 25.1 3.4 6.9

50 58.4 34.3 12.2 22.1 2.8 7.3 55.6 34.3 11.8 22.5 2.9 7.3 54.2 34.4 11.5 22.9 3.0 7.2

20

1.0

15 25.4 42.5 8.1 34.4 5.3 11.6 21.9 42.6 7.9 34.8 5.4 11.5 20.2 42.7 7.6 35.1 5.6 11.4

25 35.2 41.8 9.3 32.5 4.5 12.1 31.8 41.9 9.0 32.8 4.6 12.0 30.1 42.0 8.8 33.2 4.8 11.9

40 49.9 40.7 11.1 29.6 3.7 12.8 46.6 40.8 10.8 30.0 3.8 12.7 45.0 40.9 10.5 30.4 3.9 12.6

50 59.7 40.0 12.3 27.6 3.2 13.3 56.5 40.1 12.0 28.0 3.3 13.2 54.9 40.2 11.7 28.5 3.4 13.1

1.5

15 25.8 44.1 8.1 36.0 5.4 14.1 22.2 44.2 7.9 36.3 5.6 14.1 20.4 44.3 7.7 36.6 5.8 14.0

25 35.5 43.2 9.4 33.8 4.6 14.5 32.0 43.3 9.1 34.2 4.8 14.4 30.3 43.4 8.9 34.5 4.9 14.4

40 50.2 41.7 11.2 30.6 3.7 15.0 46.8 41.8 10.9 30.9 3.8 15.0 45.1 42.0 10.6 31.3 4.0 14.9

50 59.9 40.8 12.4 28.4 3.3 15.4 56.6 40.9 12.1 28.8 3.4 15.3 55.0 41.0 11.8 29.2 3.5 15.2

2.0

15 26.2 45.7 8.2 37.5 5.6 15.4 22.5 45.8 8.0 37.9 5.8 15.4 20.6 45.9 7.8 38.2 5.9 15.3

25 35.9 44.5 9.4 35.1 4.7 15.7 32.3 44.7 9.2 35.5 4.9 15.7 30.5 44.8 8.9 35.8 5.0 15.6

40 50.4 42.8 11.3 31.5 3.8 16.2 47.0 42.9 11.0 31.9 3.9 16.1 45.2 43.0 10.7 32.3 4.0 16.1

50 60.2 41.6 12.5 29.1 3.3 16.4 56.8 41.7 12.2 29.6 3.4 16.4 55.1 41.8 11.8 30.0 3.5 16.3

30

1.0

15 26.4 46.8 8.5 38.3 5.5 20.7 22.6 46.9 8.3 38.6 5.7 20.6 20.7 47.0 8.1 38.9 5.8 20.5

25 36.3 46.3 9.7 36.5 4.8 21.1 32.5 46.4 9.5 36.9 4.9 21.0 30.7 46.5 9.2 37.3 5.0 20.9

40Operation not recommended

50

1.5

15 26.8 48.5 8.6 40.0 5.7 23.5 22.9 48.7 8.3 40.3 5.8 23.4 20.9 48.8 8.1 40.6 6.0 23.4

25 36.7 47.8 9.8 38.0 4.9 23.8 32.8 47.9 9.5 38.4 5.0 23.8 30.9 48.0 9.3 38.7 5.2 23.7

40Operation not recommended

50

2.0

15 27.3 50.3 8.6 41.7 5.8 24.9 23.2 50.4 8.4 42.0 6.0 24.9 21.2 50.5 8.2 42.4 6.2 24.8

25 37.0 49.3 9.9 39.5 5.0 25.2 33.0 49.4 9.6 39.8 5.2 25.1 31.0 49.5 9.3 40.2 5.3 25.1

40Operation not recommended

50

NOTE: For part load operation, divide capacity by 2. 3/15/13

Page 29: Commercial Reversible Chiller - 50 Hz

29

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW030 - Performance Data cont.

CoolingSource Load Flow - 1.0 L/s Load Flow - 1.5 L/s Load Flow - 2.0 L/s

EST°C

FlowL/s

ELT°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

0

1.0

10 0.7 38.0 5.0 43.0 7.5 10.5 3.6 39.2 5.1 44.3 7.7 10.8 5.1 40.4 5.1 45.5 7.9 11.1

20 7.3 52.2 5.1 57.3 10.1 14.0 11.2 53.8 5.2 59.0 10.4 14.4 13.2 55.5 5.2 60.7 10.7 14.8

30 13.8 66.4 5.2 71.6 12.7 17.5 18.9 68.5 5.3 73.8 13.0 18.0 21.4 70.6 5.3 75.9 13.3 18.5

45 23.6 87.7 5.4 93.1 16.2 22.7 30.3 90.5 5.4 95.9 16.7 23.4 33.6 93.3 5.5 98.7 17.1 24.1

1.5

10 0.6 38.5 4.9 43.4 7.9 7.1 3.5 39.7 4.9 44.6 8.1 7.3 5.0 41.0 4.9 45.9 8.4 7.5

20 7.1 52.9 4.9 57.8 10.7 9.4 11.1 54.6 5.0 59.6 11.0 9.7 13.1 56.3 5.0 61.3 11.3 10.0

30 13.6 67.3 5.0 72.3 13.4 11.8 18.7 69.4 5.0 74.5 13.8 12.1 21.3 71.6 5.1 76.7 14.1 12.5

45 23.3 88.9 5.2 94.0 17.3 15.3 30.1 91.7 5.2 96.9 17.7 15.8 33.5 94.6 5.2 99.8 18.2 16.2

2.0

10 0.5 39.0 4.7 43.7 8.4 5.3 3.5 40.3 4.7 45.0 8.6 5.5 4.9 41.5 4.7 46.2 8.8 5.6

20 6.9 53.6 4.7 58.4 11.3 7.1 11.0 55.3 4.8 60.1 11.6 7.3 13.0 57.0 4.8 61.8 11.9 7.5

30 13.4 68.2 4.8 73.0 14.2 8.9 18.6 70.4 4.8 75.2 14.6 9.2 21.1 72.6 4.8 77.4 15.0 9.4

45 23.0 90.1 4.9 95.0 18.4 11.6 29.9 93.0 4.9 97.9 18.9 11.9 33.3 95.9 5.0 100.8 19.3 12.3

10

1.0

10 0.8 37.6 6.5 44.1 5.8 20.7 3.7 38.8 6.5 45.3 6.0 21.1 5.1 40.0 6.5 46.5 6.1 21.4

20 7.2 52.4 6.6 59.0 7.9 24.4 11.2 54.1 6.7 60.8 8.1 24.8 13.2 55.8 6.7 62.5 8.3 25.2

30 13.6 67.2 6.8 74.0 9.9 28.1 18.7 69.4 6.8 76.2 10.2 28.6 21.3 71.5 6.8 78.4 10.4 29.1

45 23.2 89.5 7.0 96.5 12.8 33.5 30.0 92.3 7.0 99.4 13.1 34.2 33.4 95.2 7.1 102.3 13.4 34.9

1.5

10 0.7 38.1 6.2 44.3 6.1 17.2 3.6 39.3 6.3 45.6 6.3 17.4 5.1 40.6 6.3 46.8 6.5 17.6

20 7.0 53.1 6.4 59.5 8.4 19.7 11.1 54.8 6.4 61.2 8.6 20.0 13.1 56.5 6.4 63.0 8.8 20.2

30 13.4 68.2 6.5 74.7 10.5 22.1 18.6 70.3 6.5 76.9 10.8 22.5 21.2 72.5 6.6 79.1 11.1 22.9

45 22.9 90.7 6.7 97.4 13.6 25.8 29.8 93.6 6.7 100.3 13.9 26.3 33.2 96.5 6.8 103.3 14.3 26.8

2.0

10 0.6 38.6 6.0 44.6 6.5 15.4 3.5 39.9 6.0 45.9 6.6 15.6 5.0 41.1 6.0 47.1 6.8 15.7

20 6.9 53.9 6.1 60.0 8.8 17.3 11.0 55.6 6.1 61.7 9.1 17.5 13.0 57.3 6.1 63.5 9.3 17.7

30 13.1 69.1 6.2 75.3 11.1 19.2 18.4 71.3 6.2 77.5 11.4 19.5 21.0 73.5 6.3 79.8 11.7 19.7

45 22.6 91.9 6.4 98.3 14.4 22.0 29.6 94.9 6.4 101.3 14.8 22.4 33.1 97.8 6.4 104.3 15.2 22.7

20

1.0

10 1.4 35.2 7.8 43.1 4.5 30.5 4.1 36.4 7.9 44.2 4.6 30.8 5.4 37.5 7.9 45.4 4.7 31.1

20 8.0 49.2 8.0 57.2 6.1 34.0 11.7 50.8 8.1 58.8 6.3 34.3 13.6 52.3 8.1 60.4 6.5 34.7

30 14.6 63.1 8.2 71.4 7.7 37.4 19.4 65.2 8.3 73.4 7.9 37.9 21.8 67.2 8.3 75.5 8.1 38.4

45 Operation not recommended

1.5

10 1.3 35.6 7.5 43.2 4.7 27.0 4.0 36.8 7.6 44.4 4.9 27.2 5.4 37.9 7.6 45.5 5.0 27.4

20 7.9 49.7 7.7 57.4 6.5 29.3 11.3 53.7 7.8 61.5 6.9 30.0 13.5 52.9 7.8 60.7 6.8 29.9

30 14.4 63.8 7.9 71.7 8.1 31.7 18.5 70.7 8.0 78.7 8.9 32.8 21.7 67.9 7.9 75.8 8.5 32.3

45 Operation not recommended

2.0

10 1.2 36.1 7.2 43.3 5.0 25.3 3.9 37.2 7.3 44.5 5.1 25.4 5.3 38.4 7.3 45.7 5.2 25.6

20 7.7 50.3 7.4 57.6 6.8 27.0 11.6 51.9 7.4 59.3 7.0 27.2 13.5 53.5 7.5 60.9 7.2 27.4

30 14.3 64.5 7.5 72.0 8.6 28.8 19.2 66.5 7.6 74.1 8.8 29.0 21.6 68.6 7.6 76.2 9.0 29.3

45 Operation not recommended

30

1.0

10 2.4 31.3 9.6 40.9 3.3 40.0 4.7 32.3 9.6 42.0 3.4 40.2 5.9 33.3 9.7 43.0 3.5 40.5

20 9.3 43.8 9.8 53.5 4.5 43.1 12.3 47.3 9.8 57.1 4.8 43.9 14.3 46.5 9.9 56.4 4.7 43.8

30 16.3 56.2 9.9 66.1 5.6 46.1 19.9 62.2 10.1 72.3 6.2 47.6 22.7 59.7 10.0 69.8 5.9 47.0

45 Operation not recommended

1.5

10 2.3 31.7 9.2 40.9 3.4 36.7 4.7 32.7 9.2 42.0 3.5 36.8 5.9 33.7 9.3 43.0 3.6 37.0

20 9.2 44.3 9.4 53.7 4.7 38.7 12.2 47.9 9.4 57.4 5.1 39.3 14.2 47.2 9.5 56.6 5.0 39.2

30 16.1 57.0 9.5 66.5 6.0 40.8 19.7 63.1 9.6 72.8 6.6 41.8 22.6 60.6 9.6 70.2 6.3 41.4

45 Operation not recommended

2.0

10 2.2 32.1 8.8 40.9 3.6 35.0 4.6 33.1 8.9 42.0 3.7 35.1 5.8 34.1 8.9 43.0 3.8 35.2

20 9.0 44.9 9.0 53.9 5.0 36.6 12.1 48.6 9.0 57.6 5.4 37.0 14.2 47.8 9.1 56.8 5.3 36.9

30 15.9 57.8 9.1 66.9 6.3 38.2 19.6 64.1 9.2 73.2 7.0 38.9 22.5 61.5 9.2 70.7 6.7 38.6

45 Operation not recommended

45

1.0

10 3.7 26.0 11.6 37.6 2.2 54.2 5.6 26.8 11.7 38.5 2.3 54.4 6.6 27.7 11.7 39.4 2.4 54.6

20 10.8 37.6 11.8 49.4 3.2 57.0 13.4 40.8 11.9 52.7 3.4 57.8 15.1 40.0 11.9 51.9 3.4 57.7

30Operation not recommended

45

1.5

10 3.6 26.3 11.2 37.5 2.4 51.1 5.6 27.2 11.2 38.4 2.4 51.2 6.6 28.0 11.3 39.3 2.5 51.4

20 10.7 38.0 11.3 49.3 3.3 53.0 13.3 41.2 11.4 52.6 3.6 53.6 15.1 40.4 11.5 51.9 3.5 53.4

30Operation not recommended

45

2.0

10 3.5 26.6 10.7 37.3 2.5 49.6 5.5 27.5 10.8 38.2 2.5 49.7 6.5 28.3 10.8 39.1 2.6 49.8

20 10.6 38.4 10.9 49.3 3.5 51.0 13.2 41.6 11.0 52.6 3.8 51.4 15.0 40.8 11.0 51.8 3.7 51.3

30Operation not recommended

45

NOTE: For part load operation, divide capacity by 2. 2/2/12

Page 30: Commercial Reversible Chiller - 50 Hz

30

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW035 - Performance Data

HeatingSource Load Flow - 1.0 L/s Load Flow - 2.0 L/s Load Flow - 2.5 L/s

EST°C

FlowL/s

ELT°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

0

2.0

15 22.6 32.1 7.5 24.5 4.3 -2.9 18.8 32.2 7.4 24.8 4.4 -3.0 18.1 32.2 7.3 24.9 4.4 -3.0

25 32.4 31.0 8.9 22.1 3.5 -2.6 28.7 31.1 8.7 22.4 3.6 -2.7 28.0 31.2 8.6 22.6 3.6 -2.7

40 47.0 29.5 11.0 18.5 2.7 -2.2 43.5 29.6 10.8 18.8 2.8 -2.2 42.8 29.6 10.6 19.0 2.8 -2.3

50 56.8 28.5 12.4 16.0 2.3 -1.9 53.4 28.5 12.1 16.4 2.4 -2.0 52.7 28.6 12.0 16.6 2.4 -2.0

2.5

15 22.8 32.8 7.6 25.3 4.3 -2.4 18.9 32.9 7.4 25.6 4.5 -2.4 18.1 33.0 7.3 25.7 4.5 -2.4

25 32.5 31.7 9.0 22.7 3.5 -2.2 28.8 31.8 8.7 23.1 3.6 -2.2 28.0 31.9 8.6 23.2 3.7 -2.2

40 47.1 30.0 11.1 18.9 2.7 -1.8 43.6 30.1 10.8 19.3 2.8 -1.8 42.9 30.1 10.7 19.5 2.8 -1.9

50 56.9 28.9 12.5 16.4 2.3 -1.6 53.4 29.0 12.2 16.8 2.4 -1.6 52.8 29.0 12.0 17.0 2.4 -1.6

10

1.0

15 24.4 38.7 8.1 30.6 4.8 2.5 19.7 38.9 7.8 31.0 5.0 2.4 18.8 38.9 7.7 31.3 5.1 2.4

25 34.2 37.8 9.4 28.3 4.0 3.1 29.6 37.9 9.1 28.8 4.2 3.0 28.7 38.0 8.9 29.0 4.2 2.9

40 48.9 36.3 11.4 24.9 3.2 3.9 44.4 36.5 11.0 25.4 3.3 3.8 43.6 36.5 10.8 25.7 3.4 3.7

50 58.6 35.4 12.8 22.6 2.8 4.5 54.3 35.5 12.3 23.2 2.9 4.3 53.5 35.6 12.1 23.5 2.9 4.3

2.0

15 24.9 40.7 8.2 32.5 5.0 6.0 20.0 40.8 7.9 33.0 5.2 6.0 19.0 40.9 7.7 33.2 5.3 6.0

25 34.6 39.5 9.5 30.0 4.2 6.3 29.8 39.6 9.2 30.4 4.3 6.3 28.9 39.7 9.0 30.7 4.4 6.3

40 49.2 37.6 11.5 26.1 3.3 6.8 44.6 37.8 11.1 26.7 3.4 6.7 43.7 37.8 10.9 26.9 3.5 6.7

50 58.9 36.4 12.9 23.6 2.8 7.1 54.5 36.5 12.4 24.1 2.9 7.1 53.6 36.6 12.2 24.4 3.0 7.0

2.5

15 25.2 41.7 8.2 33.5 5.1 6.7 20.1 41.8 7.9 33.9 5.3 6.7 19.1 41.9 7.8 34.1 5.4 6.7

25 34.8 40.3 9.5 30.8 4.2 7.0 29.9 40.5 9.2 31.3 4.4 7.0 29.0 40.5 9.1 31.5 4.5 6.9

40 49.3 38.3 11.6 26.7 3.3 7.4 44.7 38.4 11.2 27.3 3.4 7.3 43.8 38.5 11.0 27.5 3.5 7.3

50 59.0 36.9 12.9 24.0 2.9 7.7 54.5 37.1 12.5 24.6 3.0 7.6 53.6 37.1 12.2 24.9 3.0 7.6

20

1.0

15 26.4 46.9 8.4 38.5 5.6 10.6 20.7 47.1 8.1 39.0 5.8 10.5 19.6 47.2 8.0 39.2 5.9 10.4

25 36.2 45.8 9.8 36.1 4.7 11.2 30.6 46.0 9.4 36.6 4.9 11.1 29.5 46.1 9.2 36.8 5.0 11.0

40 50.8 44.2 11.8 32.4 3.8 12.1 45.4 44.3 11.4 33.0 3.9 12.0 44.3 44.4 11.1 33.3 4.0 11.9

50 60.5 43.1 13.1 30.0 3.3 12.7 55.3 43.2 12.6 30.6 3.4 12.5 54.2 43.3 12.4 30.9 3.5 12.5

2.0

15 27.0 49.3 8.5 40.8 5.8 15.0 21.0 49.4 8.2 41.2 6.0 15.0 19.8 49.5 8.0 41.5 6.2 14.9

25 36.7 47.9 9.8 38.0 4.9 15.4 30.9 48.0 9.5 38.5 5.1 15.3 29.7 48.1 9.3 38.8 5.2 15.3

40 51.1 45.7 11.9 33.8 3.9 15.9 45.6 45.9 11.5 34.4 4.0 15.8 44.5 45.9 11.2 34.7 4.1 15.8

50 60.8 44.3 13.2 31.1 3.3 16.2 55.4 44.4 12.8 31.7 3.5 16.1 54.3 44.5 12.5 32.0 3.6 16.1

2.5

15 27.3 50.5 8.5 41.9 5.9 15.9 21.2 50.6 8.2 42.4 6.1 15.9 19.9 50.7 8.1 42.6 6.3 15.8

25 36.9 48.9 9.9 39.0 4.9 16.2 31.0 49.0 9.5 39.5 5.1 16.1 29.8 49.1 9.4 39.7 5.2 16.1

40 51.3 46.5 11.9 34.6 3.9 16.6 45.7 46.6 11.5 35.1 4.1 16.6 44.6 46.7 11.3 35.4 4.1 16.5

50 60.9 44.9 13.3 31.6 3.4 16.9 55.5 45.0 12.8 32.2 3.5 16.9 54.4 45.1 12.6 32.5 3.6 16.8

30

1.0

15 27.6 51.6 8.9 42.7 5.8 19.6 21.3 51.8 8.6 43.2 6.0 19.5 20.1 51.9 8.4 43.5 6.2 19.4

25 37.4 50.7 10.2 40.5 5.0 20.1 31.2 50.9 9.9 41.0 5.2 20.0 30.0 51.0 9.7 41.3 5.3 19.9

40Operation not recommended

50

2.0

15 28.2 54.2 9.0 45.2 6.1 24.5 21.6 54.4 8.6 45.7 6.3 24.4 20.3 54.5 8.5 46.0 6.4 24.4

25 37.9 53.0 10.3 42.7 5.1 24.8 31.5 53.1 9.9 43.2 5.3 24.7 30.2 53.2 9.8 43.5 5.5 24.7

40Operation not recommended

50

2.5

15 28.5 55.5 9.0 46.5 6.2 25.5 21.8 55.7 8.7 47.0 6.4 25.4 20.4 55.8 8.5 47.3 6.5 25.4

25 38.2 54.1 10.3 43.7 5.2 25.7 31.6 54.3 10.0 44.3 5.4 25.7 30.3 54.3 9.8 44.5 5.5 25.7

40Operation not recommended

50

NOTE: For part load operation, divide capacity by 2. 3/15/13

Page 31: Commercial Reversible Chiller - 50 Hz

31

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW035 - Performance Data cont.

CoolingSource Load Flow - 1.5 L/s Load Flow - 2.0 L/s Load Flow - 2.5 L/s

EST°C

FlowL/s

ELT°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

0

1.0

10 -0.2 41.9 5.4 47.3 7.8 11.5 4.7 43.7 5.4 49.1 8.1 12.0 5.7 44.6 5.4 50.0 8.2 12.2

20 6.0 57.5 5.4 63.0 10.6 15.4 12.7 60.0 5.5 65.5 10.9 16.0 14.0 61.2 5.5 66.7 11.1 16.3

30 12.1 73.2 5.5 78.7 13.3 19.2 20.7 76.3 5.6 81.9 13.7 20.0 22.4 77.9 5.6 83.5 14.0 20.4

45 21.4 96.7 5.6 102.3 17.2 25.0 32.7 100.8 5.7 106.5 17.8 26.0 35.0 102.9 5.7 108.6 18.1 26.5

2.0

10 -0.4 42.7 5.1 47.8 8.4 5.8 4.6 44.5 5.1 49.6 8.7 6.0 5.6 45.4 5.2 50.5 8.8 6.2

20 5.7 58.6 5.2 63.8 11.4 7.8 12.5 61.1 5.2 66.3 11.8 8.1 13.9 62.4 5.2 67.6 12.0 8.2

30 11.8 74.6 5.2 79.8 14.3 9.7 20.5 77.7 5.2 83.0 14.8 10.1 22.3 79.3 5.3 84.6 15.1 10.3

45 21.0 98.5 5.3 103.8 18.6 12.7 32.5 102.7 5.3 108.0 19.3 13.2 34.8 104.8 5.3 110.1 19.6 13.4

2.5

10 -0.5 43.0 5.0 48.0 8.7 4.7 4.5 44.9 5.0 49.9 9.0 4.9 5.5 45.8 5.0 50.8 9.1 5.0

20 5.6 59.1 5.0 64.1 11.8 6.3 12.5 61.7 5.0 66.7 12.2 6.5 13.9 62.9 5.1 68.0 12.4 6.6

30 11.6 75.2 5.1 80.3 14.9 7.8 20.4 78.4 5.1 83.5 15.4 8.1 22.2 80.0 5.1 85.1 15.7 8.3

45 20.8 99.4 5.1 104.5 19.4 10.2 32.4 103.6 5.1 108.8 20.1 10.6 34.7 105.7 5.2 110.9 20.5 10.8

10

1.0

10 -0.1 41.5 6.9 48.4 6.0 21.8 4.7 43.2 6.9 50.2 6.2 22.2 5.7 44.1 7.0 51.1 6.3 22.5

20 5.9 57.8 7.0 64.8 8.2 25.8 12.6 60.3 7.1 67.3 8.5 26.4 14.0 61.5 7.1 68.6 8.7 26.7

30 11.9 74.2 7.1 81.3 10.4 29.8 20.6 77.3 7.2 84.5 10.8 30.6 22.3 78.9 7.2 86.1 11.0 31.0

45 20.9 98.7 7.3 106.0 13.5 35.9 32.5 102.9 7.4 110.2 14.0 36.9 34.8 105.0 7.4 112.4 14.2 37.4

2.0

10 -0.3 42.2 6.5 48.8 6.5 15.9 4.6 44.0 6.6 50.6 6.7 16.2 5.6 44.9 6.6 51.5 6.8 16.3

20 5.6 58.9 6.6 65.5 8.9 18.0 12.5 61.4 6.7 68.1 9.2 18.3 13.9 62.6 6.7 69.3 9.4 18.5

30 11.6 75.5 6.7 82.3 11.2 20.0 20.4 78.7 6.8 85.5 11.6 20.4 22.2 80.4 6.8 87.1 11.8 20.6

45 20.5 100.5 6.9 107.4 14.6 23.1 32.2 104.8 6.9 111.7 15.2 23.6 34.6 106.9 6.9 113.9 15.4 23.9

2.5

10 -0.4 42.6 6.4 49.0 6.7 14.8 4.6 44.4 6.4 50.8 6.9 15.0 5.6 45.3 6.4 51.8 7.1 15.0

20 5.5 59.4 6.4 65.9 9.2 16.4 12.4 61.9 6.5 68.4 9.6 16.7 13.8 63.2 6.5 69.7 9.7 16.8

30 11.4 76.2 6.5 82.7 11.7 18.1 20.3 79.5 6.6 86.0 12.1 18.4 22.1 81.1 6.6 87.7 12.3 18.6

45 20.3 101.4 6.6 108.1 15.3 20.5 32.1 105.7 6.7 112.4 15.8 21.0 34.5 107.9 6.7 114.6 16.1 21.2

20

1.0

10 0.5 38.8 8.4 47.2 4.7 31.5 5.1 40.5 8.4 48.9 4.8 31.9 6.0 41.3 8.4 49.8 4.9 32.1

20 6.8 54.2 8.5 62.7 6.4 35.3 13.1 56.6 8.6 65.1 6.6 35.9 14.4 57.7 8.6 66.3 6.7 36.2

30 13.0 69.6 8.6 78.3 8.1 39.1 21.1 72.6 8.7 81.3 8.3 39.8 22.8 74.1 8.7 82.8 8.5 40.2

45 Operation not recommended

2.0

10 0.4 39.5 7.9 47.4 5.0 25.8 5.0 41.1 8.0 49.1 5.2 26.0 5.9 42.0 8.0 50.0 5.2 26.1

20 6.6 55.0 8.0 63.1 6.8 27.7 12.7 60.1 8.1 68.2 7.4 28.3 14.3 58.6 8.1 66.7 7.2 28.1

30 12.8 70.6 8.2 78.8 8.7 29.6 20.4 79.1 8.2 87.3 9.6 30.6 22.7 75.1 8.2 83.4 9.1 30.2

45 Operation not recommended

2.5

10 0.3 39.8 7.7 47.5 5.2 24.6 4.9 41.5 7.8 49.2 5.3 24.8 5.9 42.3 7.8 50.1 5.4 24.9

20 6.5 55.4 7.8 63.3 7.1 26.2 13.0 57.8 7.9 65.7 7.4 26.4 14.2 59.0 7.9 66.9 7.5 26.5

30 12.7 71.1 7.9 79.0 9.0 27.7 21.0 74.1 8.0 82.1 9.3 28.0 22.6 75.7 8.0 83.6 9.5 28.2

45 Operation not recommended

30

1.0

10 1.6 34.6 10.2 44.8 3.4 40.9 5.6 36.0 10.3 46.3 3.5 41.3 6.4 36.8 10.3 47.1 3.6 41.5

20 8.3 48.1 10.3 58.5 4.7 44.3 13.6 52.5 10.4 63.0 5.0 45.4 15.0 51.2 10.4 61.6 4.9 45.0

30 14.9 61.7 10.5 72.2 5.9 47.6 21.6 69.0 10.6 79.6 6.5 49.4 23.6 65.6 10.6 76.2 6.2 48.6

45 Operation not recommended

2.0

10 1.4 35.1 9.7 44.8 3.6 35.5 5.5 36.6 9.7 46.3 3.8 35.6 6.4 37.3 9.8 47.1 3.8 35.7

20 8.1 49.0 9.8 58.8 5.0 37.2 13.5 53.5 9.9 63.3 5.4 37.7 14.9 52.1 9.9 62.0 5.3 37.6

30 14.7 62.9 9.9 72.8 6.4 38.9 21.4 70.4 10.0 80.4 7.1 39.8 23.5 66.9 10.0 76.9 6.7 39.4

45 Operation not recommended

2.5

10 1.4 35.3 9.4 44.7 3.8 34.4 5.5 36.8 9.5 46.3 3.9 34.5 6.3 37.6 9.5 47.1 4.0 34.6

20 7.9 49.4 9.5 58.9 5.2 35.7 13.4 54.0 9.6 63.5 5.6 36.2 14.9 52.6 9.6 62.2 5.5 36.1

30 14.5 63.5 9.6 73.1 6.6 37.1 21.3 71.1 9.7 80.8 7.4 37.9 23.4 67.5 9.7 77.2 7.0 37.5

45 Operation not recommended

45

1.0

10 3.0 28.7 12.4 41.1 2.3 55.0 6.4 29.9 12.5 42.4 2.4 55.3 7.0 30.5 12.5 43.0 2.4 55.5

20 9.9 41.3 12.5 53.8 3.3 58.1 14.5 45.3 12.6 57.9 3.6 59.1 15.7 44.0 12.6 56.6 3.5 58.8

30Operation not recommended

45

2.0

10 2.9 29.1 11.7 40.9 2.5 50.0 6.3 30.4 11.8 42.2 2.6 50.1 7.0 31.0 11.9 42.8 2.6 50.2

20 9.8 41.9 11.8 53.8 3.5 51.6 14.4 45.9 11.9 57.9 3.8 52.1 15.6 44.6 12.0 56.6 3.7 51.9

30Operation not recommended

45

2.5

10 2.8 29.3 11.4 40.8 2.6 49.0 6.3 30.6 11.5 42.1 2.7 49.1 7.0 31.2 11.5 42.8 2.7 49.2

20 9.7 42.2 11.5 53.8 3.7 50.2 14.4 46.3 11.6 57.9 4.0 50.6 15.6 44.9 11.6 56.6 3.9 50.5

30Operation not recommended

45

NOTE: For part load operation, divide capacity by 2. 2/2/12

Page 32: Commercial Reversible Chiller - 50 Hz

32

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW045 - Performance Data

HeatingSource Load Flow - 1.5 L/s Load Flow - 2.0 L/s Load Flow - 3.0 L/s

EST°C

FlowL/s

ELT°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

0

2.0

15 21.0 37.9 9.2 28.7 4.1 -3.4 19.5 38.0 9.1 28.8 4.2 -3.4 18.0 38.1 8.9 29.2 4.3 -3.5

25 30.9 37.0 11.0 26.0 3.4 -3.1 29.4 37.1 10.9 26.2 3.4 -3.1 28.0 37.2 10.6 26.6 3.5 -3.2

40 45.7 35.7 13.7 22.0 2.6 -2.6 44.3 35.8 13.5 22.2 2.6 -2.6 42.8 35.9 13.2 22.7 2.7 -2.7

50 55.5 34.8 15.5 19.3 2.3 -2.3 54.2 34.9 15.3 19.6 2.3 -2.3 52.8 35.0 14.9 20.1 2.4 -2.4

3.0

15 21.3 39.8 9.3 30.5 4.3 -2.4 19.7 39.9 9.2 30.7 4.3 -2.4 18.2 40.0 9.0 31.0 4.4 -2.5

25 31.1 38.7 11.1 27.6 3.5 -2.2 29.6 38.7 11.0 27.7 3.5 -2.2 28.1 38.9 10.7 28.1 3.6 -2.2

40 45.9 37.0 13.8 23.2 2.7 -1.8 44.4 37.0 13.6 23.4 2.7 -1.9 42.9 37.1 13.3 23.9 2.8 -1.9

50 55.7 35.8 15.6 20.2 2.3 -1.6 54.3 35.9 15.4 20.5 2.3 -1.6 52.9 36.0 15.0 21.0 2.4 -1.7

10

1.5

15 22.6 46.9 10.0 37.0 4.7 4.0 20.7 47.0 9.8 37.2 4.8 3.9 18.8 47.2 9.5 37.7 5.0 3.9

25 32.5 46.1 11.7 34.4 3.9 4.4 30.6 46.2 11.5 34.7 4.0 4.4 28.8 46.3 11.1 35.2 4.2 4.3

40 47.3 44.8 14.2 30.5 3.1 5.0 45.5 44.9 14.0 30.9 3.2 5.0 43.7 45.0 13.5 31.5 3.3 4.9

50 57.1 43.9 15.9 28.0 2.8 5.5 55.4 44.0 15.7 28.3 2.8 5.4 53.6 44.1 15.1 29.0 2.9 5.3

2.0

15 22.8 48.1 10.0 38.1 4.8 5.4 20.9 48.2 9.8 38.4 4.9 5.3 18.9 48.4 9.5 38.9 5.1 5.3

25 32.7 47.1 11.7 35.4 4.0 5.7 30.8 47.2 11.5 35.7 4.1 5.6 28.9 47.4 11.1 36.2 4.3 5.6

40 47.4 45.6 14.3 31.3 3.2 6.2 45.6 45.7 14.0 31.6 3.3 6.1 43.7 45.8 13.6 32.3 3.4 6.1

50 57.2 44.6 16.0 28.6 2.8 6.5 55.4 44.6 15.7 28.9 2.8 6.5 53.6 44.8 15.2 29.6 3.0 6.4

3.0

15 23.2 50.5 10.1 40.4 5.0 6.7 21.2 50.6 9.9 40.7 5.1 6.7 19.1 50.8 9.6 41.2 5.3 6.6

25 33.0 49.2 11.8 37.4 4.2 7.0 31.0 49.3 11.6 37.7 4.2 6.9 29.0 49.5 11.2 38.2 4.4 6.9

40 47.7 47.2 14.4 32.8 3.3 7.3 45.8 47.3 14.2 33.1 3.3 7.3 43.9 47.4 13.7 33.8 3.5 7.3

50 57.5 45.8 16.1 29.7 2.8 7.6 55.6 45.9 15.9 30.1 2.9 7.6 53.7 46.1 15.3 30.8 3.0 7.5

20

1.5

15 24.2 56.9 10.4 46.5 5.5 12.4 21.9 57.0 10.2 46.8 5.6 12.4 19.6 57.2 9.8 47.3 5.8 12.3

25 34.1 55.9 12.1 43.8 4.6 12.9 31.8 56.0 11.9 44.1 4.7 12.8 29.6 56.2 11.5 44.7 4.9 12.7

40 48.9 54.5 14.7 39.8 3.7 13.5 46.7 54.5 14.4 40.1 3.8 13.5 44.4 54.7 13.9 40.8 3.9 13.4

50 58.7 53.5 16.4 37.1 3.3 14.0 56.5 53.6 16.1 37.5 3.3 13.9 54.4 53.7 15.5 38.2 3.5 13.8

2.0

15 24.5 58.3 10.4 47.9 5.6 14.2 22.1 58.4 10.2 48.2 5.7 14.1 19.8 58.6 9.9 48.7 5.9 14.1

25 34.3 57.1 12.1 45.0 4.7 14.5 32.0 57.2 11.9 45.3 4.8 14.5 29.7 57.4 11.5 45.9 5.0 14.4

40 49.0 55.4 14.7 40.7 3.8 15.0 46.8 55.5 14.5 41.0 3.8 15.0 44.5 55.7 14.0 41.7 4.0 14.9

50 58.8 54.2 16.4 37.8 3.3 15.4 56.6 54.3 16.2 38.1 3.4 15.3 54.4 54.5 15.6 38.9 3.5 15.3

3.0

15 24.9 61.2 10.5 50.6 5.8 15.9 22.5 61.3 10.3 50.9 5.9 15.9 20.0 61.5 10.0 51.5 6.2 15.8

25 34.7 59.6 12.3 47.3 4.9 16.2 32.3 59.7 12.0 47.7 5.0 16.1 29.9 59.9 11.6 48.3 5.2 16.1

40 49.3 57.3 14.9 42.4 3.9 16.6 47.0 57.4 14.6 42.8 3.9 16.5 44.7 57.6 14.1 43.5 4.1 16.5

50 59.1 55.7 16.6 39.1 3.4 16.8 56.8 55.8 16.3 39.5 3.4 16.8 54.6 56.0 15.7 40.3 3.6 16.7

30

1.5

15 25.2 62.6 10.9 51.6 5.7 21.6 22.6 62.7 10.8 51.9 5.8 21.6 20.1 62.9 10.4 52.5 6.1 21.5

25 35.1 61.9 12.6 49.2 4.9 22.0 32.6 62.0 12.4 49.6 5.0 21.9 30.1 62.2 12.0 50.2 5.2 21.8

40Operation not recommended

50

2.0

15 25.4 64.1 11.0 53.1 5.8 23.5 22.8 64.2 10.8 53.4 5.9 23.5 20.2 64.5 10.4 54.0 6.2 23.4

25 35.3 63.2 12.7 50.5 5.0 23.8 32.7 63.3 12.5 50.9 5.1 23.8 30.2 63.6 12.0 51.5 5.3 23.7

40Operation not recommended

50

3.0

15 25.9 67.3 11.1 56.2 6.1 25.4 23.2 67.4 10.9 56.5 6.2 25.4 20.5 67.6 10.5 57.1 6.4 25.4

25 35.7 66.0 12.8 53.1 5.1 25.7 33.1 66.1 12.6 53.5 5.2 25.7 30.4 66.3 12.2 54.1 5.5 25.6

40Operation not recommended

50

NOTE: For part load operation, divide capacity by 2. 3/15/13

Page 33: Commercial Reversible Chiller - 50 Hz

33

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW045 - Performance Data cont.

CoolingSource Load Flow - 1.5 L/s Load Flow - 2.0 L/s Load Flow - 3.0 L/s

EST°C

FlowL/s

ELT°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

0

1.5

10 1.6 51.6 6.8 58.4 7.5 9.5 3.6 52.7 6.9 59.5 7.7 9.7 5.5 54.9 6.9 61.8 7.9 10.0

20 8.5 70.9 6.9 77.8 10.2 12.7 11.2 72.4 6.9 79.3 10.4 12.9 13.9 75.4 7.0 82.4 10.8 13.4

30 15.3 90.2 7.0 97.2 12.9 15.8 18.8 92.1 7.0 99.1 13.1 16.1 22.2 95.9 7.1 103.0 13.6 16.7

45 25.6 119.1 7.1 126.3 16.7 20.5 30.2 121.7 7.1 128.8 17.0 20.9 34.7 126.7 7.2 133.9 17.6 21.8

2.0

10 1.5 52.0 6.7 58.7 7.8 7.2 3.5 53.2 6.7 59.8 7.9 7.3 5.5 55.4 6.7 62.1 8.2 7.6

20 8.4 71.5 6.7 78.3 10.6 9.5 11.1 73.1 6.8 79.8 10.8 9.7 13.8 76.1 6.8 82.9 11.2 10.1

30 15.2 91.0 6.8 97.8 13.4 11.9 18.7 93.0 6.8 99.8 13.6 12.2 22.1 96.8 6.9 103.7 14.1 12.6

45 25.4 120.2 6.9 127.1 17.4 15.5 30.0 122.8 6.9 129.7 17.7 15.8 34.6 127.9 7.0 134.9 18.3 16.5

3.0

10 1.4 53.0 6.3 59.3 8.4 4.8 3.4 54.1 6.3 60.5 8.5 4.9 5.4 56.4 6.4 62.8 8.8 5.1

20 8.2 72.8 6.4 79.2 11.4 6.4 10.9 74.4 6.4 80.8 11.6 6.6 13.7 77.5 6.4 83.9 12.1 6.8

30 14.9 92.7 6.4 99.1 14.5 8.1 18.5 94.7 6.4 101.1 14.7 8.2 22.0 98.6 6.5 105.1 15.2 8.5

45 25.1 122.4 6.5 128.9 18.9 10.5 29.7 125.1 6.5 131.5 19.3 10.7 34.4 130.3 6.5 136.8 19.9 11.1

10

1.5

10 1.7 51.1 8.8 59.8 5.8 19.7 3.6 52.1 8.8 60.9 5.9 19.9 5.6 54.3 8.9 63.2 6.1 20.3

20 8.4 71.2 8.9 80.1 8.0 23.0 11.1 72.7 8.9 81.7 8.1 23.3 13.8 75.7 9.0 84.7 8.4 23.8

30 15.1 91.4 9.0 100.4 10.1 26.3 18.6 93.3 9.1 102.4 10.3 26.6 22.1 97.2 9.1 106.3 10.6 27.3

45 25.2 121.6 9.2 130.8 13.1 31.3 29.9 124.2 9.3 133.4 13.4 31.7 34.5 129.3 9.3 138.7 13.8 32.5

2.0

10 1.6 51.5 8.6 60.1 6.0 17.3 3.6 52.6 8.6 61.2 6.1 17.5 5.5 54.8 8.6 63.5 6.3 17.7

20 8.3 71.9 8.7 80.5 8.3 19.8 11.0 73.4 8.7 82.1 8.4 20.0 13.8 76.4 8.8 85.2 8.7 20.4

30 15.0 92.2 8.8 101.0 10.5 22.3 18.5 94.2 8.8 103.0 10.7 22.6 22.0 98.1 8.9 107.0 11.0 23.0

45 25.0 122.7 9.0 131.7 13.7 26.1 29.7 125.3 9.0 134.3 13.9 26.4 34.4 130.5 9.1 139.6 14.4 27.0

3.0

10 1.5 52.5 8.1 60.6 6.5 14.9 3.5 53.6 8.1 61.7 6.6 15.0 5.5 55.8 8.2 64.0 6.8 15.2

20 8.1 73.2 8.2 81.4 8.9 16.6 10.9 74.7 8.2 83.0 9.1 16.7 13.7 77.9 8.3 86.1 9.4 17.0

30 14.7 93.9 8.3 102.2 11.3 18.3 18.3 95.9 8.3 104.2 11.5 18.5 21.9 99.9 8.4 108.2 11.9 18.8

45 24.7 124.9 8.4 133.4 14.9 20.8 29.4 127.6 8.4 136.0 15.1 21.1 34.2 132.9 8.5 141.4 15.7 21.5

20

1.5

10 2.2 47.8 10.6 58.5 4.5 29.5 4.0 48.9 10.7 59.5 4.6 29.7 5.9 50.9 10.7 61.6 4.7 30.0

20 9.1 66.8 10.8 77.6 6.2 32.6 11.7 68.2 10.8 79.1 6.3 32.9 14.2 71.1 10.9 82.0 6.5 33.3

30 16.1 85.8 11.0 96.8 7.8 35.7 19.3 87.6 11.0 98.6 8.0 36.0 22.6 91.3 11.1 102.3 8.2 36.6

45 Operation not recommended

2.0

10 2.2 48.2 10.4 58.6 4.7 27.1 4.0 49.2 10.4 59.6 4.7 27.3 5.8 51.3 10.5 61.8 4.9 27.5

20 9.1 67.3 10.5 77.8 6.4 29.5 11.2 72.0 10.6 82.6 6.8 30.1 14.2 71.6 10.6 82.2 6.7 30.0

30 16.0 86.4 10.7 97.0 8.1 31.8 18.4 94.7 10.7 105.5 8.8 32.9 22.5 91.9 10.8 102.7 8.5 32.5

45 Operation not recommended

3.0

10 2.0 49.0 9.8 58.8 5.0 24.8 3.9 50.0 9.9 59.9 5.1 24.9 5.8 52.1 9.9 62.0 5.2 25.0

20 8.9 68.3 9.9 78.2 6.9 26.4 11.5 69.7 10.0 79.7 7.0 26.5 14.1 72.6 10.0 82.7 7.2 26.7

30 15.8 87.6 10.0 97.6 8.7 27.9 19.1 89.5 10.1 99.5 8.9 28.1 22.4 93.2 10.1 103.3 9.2 28.4

45 Operation not recommended

30

1.5

10 3.1 42.6 13.0 55.5 3.3 39.0 4.7 43.5 13.0 56.5 3.3 39.2 6.3 45.3 13.1 58.4 3.5 39.5

20 10.3 59.6 13.1 72.7 4.5 41.8 12.2 63.7 13.2 76.9 4.8 42.5 14.8 63.4 13.3 76.6 4.8 42.5

30 17.5 76.6 13.3 89.9 5.8 44.6 19.8 84.0 13.4 97.4 6.3 45.8 23.4 81.5 13.4 94.9 6.1 45.4

45 Operation not recommended

2.0

10 3.0 42.9 12.6 55.5 3.4 36.8 4.7 43.8 12.7 56.5 3.5 36.9 6.3 45.6 12.8 58.4 3.6 37.1

20 10.2 60.1 12.8 72.9 4.7 38.9 12.2 64.3 12.8 77.2 5.0 39.4 14.8 63.9 12.9 76.8 5.0 39.4

30 17.4 77.3 12.9 90.2 6.0 41.0 19.7 84.8 13.0 97.8 6.5 41.9 23.3 82.3 13.0 95.3 6.3 41.6

45 Operation not recommended

3.0

10 2.9 43.5 12.0 55.5 3.6 34.5 4.6 44.4 12.0 56.5 3.7 34.6 6.2 46.3 12.1 58.4 3.8 34.7

20 10.1 61.2 12.1 73.2 5.1 36.0 12.0 65.5 12.1 77.6 5.4 36.3 14.7 65.1 12.2 77.3 5.3 36.3

30 17.2 78.8 12.1 91.0 6.5 37.4 19.5 86.5 12.2 98.7 7.1 38.0 23.2 83.8 12.3 96.1 6.8 37.8

45 Operation not recommended

45

1.5

10 4.3 35.3 15.8 51.1 2.2 53.3 5.6 36.1 15.8 51.9 2.3 53.4 6.9 37.6 15.9 53.5 2.4 53.7

20 11.7 51.2 15.9 67.0 3.2 55.9 13.3 55.0 15.9 70.9 3.4 56.5 15.6 54.4 16.0 70.5 3.4 56.5

30Operation not recommended

45

2.0

10 4.2 35.6 15.4 51.0 2.3 51.2 5.6 36.4 15.4 51.8 2.4 51.3 6.9 37.9 15.5 53.4 2.4 51.5

20 11.6 51.5 15.5 67.0 3.3 53.2 13.2 55.4 15.5 70.9 3.6 53.6 15.5 54.8 15.6 70.5 3.5 53.6

30Operation not recommended

45

3.0

10 4.1 36.1 14.6 50.7 2.5 49.1 5.5 36.9 14.6 51.5 2.5 49.2 6.9 38.4 14.7 53.1 2.6 49.3

20 11.5 52.3 14.7 66.9 3.6 50.4 13.2 56.1 14.7 70.9 3.8 50.8 15.5 55.6 14.8 70.4 3.8 50.7

30Operation not recommended

45

NOTE: For part load operation, divide capacity by 2. 2/2/12

Page 34: Commercial Reversible Chiller - 50 Hz

34

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW050 - Performance Data

HeatingSource Load Flow - 1.5 L/s Load Flow - 2.5 L/s Load Flow - 3.5 L/s

EST°C

FlowL/s

ELT°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

0

2.5

15 22.3 45.9 10.3 35.6 4.5 -3.4 19.4 46.0 10.1 35.9 4.5 -3.4 18.1 46.1 9.9 36.2 4.6 -3.4

25 32.0 44.2 12.5 31.7 3.5 -3.0 29.2 44.3 12.2 32.1 3.6 -3.1 28.0 44.4 12.0 32.4 3.7 -3.1

40 46.6 41.6 15.7 25.9 2.7 -2.5 44.0 41.7 15.4 26.3 2.7 -2.5 42.8 41.8 15.1 26.7 2.8 -2.5

50 56.3 39.9 17.9 22.1 2.2 -2.1 53.8 40.0 17.5 22.5 2.3 -2.1 52.7 40.1 17.2 22.9 2.3 -2.2

3.5

15 22.5 47.6 10.4 37.2 4.6 -2.5 19.5 47.7 10.2 37.5 4.7 -2.6 18.3 47.8 10.0 37.8 4.8 -2.6

25 32.2 45.6 12.5 33.1 3.6 -2.3 29.4 45.7 12.3 33.4 3.7 -2.3 28.1 45.9 12.1 33.8 3.8 -2.3

40 46.8 42.7 15.8 26.9 2.7 -1.8 44.1 42.8 15.5 27.3 2.8 -1.9 42.9 42.9 15.2 27.7 2.8 -1.9

50 56.5 40.8 18.0 22.8 2.3 -1.6 53.9 40.9 17.6 23.3 2.3 -1.6 52.8 41.0 17.3 23.7 2.4 -1.6

10

1.5

15 24.1 56.1 11.1 45.0 5.1 2.7 20.5 56.2 10.8 45.4 5.2 2.6 18.9 56.4 10.5 45.9 5.4 2.5

25 33.8 54.4 13.2 41.2 4.1 3.3 30.3 54.5 12.8 41.7 4.2 3.2 28.8 54.6 12.5 42.1 4.4 3.1

40 48.4 51.8 16.3 35.5 3.2 4.2 45.1 51.9 15.9 36.0 3.3 4.1 43.6 52.0 15.5 36.6 3.4 4.1

50 58.1 50.0 18.4 31.6 2.7 4.9 54.9 50.2 17.9 32.2 2.8 4.8 53.5 50.3 17.4 32.8 2.9 4.7

2.5

15 24.5 58.2 11.2 47.1 5.2 5.4 20.7 58.4 10.9 47.5 5.4 5.4 19.1 58.5 10.6 48.0 5.5 5.3

25 34.1 56.2 13.3 43.0 4.2 5.8 30.5 56.4 12.9 43.4 4.4 5.8 28.9 56.5 12.6 43.9 4.5 5.7

40 48.6 53.2 16.4 36.8 3.2 6.4 45.2 53.3 16.0 37.3 3.3 6.4 43.7 53.4 15.5 37.9 3.4 6.3

50 58.3 51.1 18.5 32.6 2.8 6.8 55.0 51.2 18.0 33.2 2.8 6.8 53.6 51.4 17.5 33.8 2.9 6.7

3.5

15 24.8 60.4 11.2 49.2 5.4 6.6 20.9 60.6 10.9 49.6 5.5 6.5 19.2 60.7 10.7 50.1 5.7 6.5

25 34.4 58.1 13.3 44.7 4.4 6.9 30.7 58.2 13.0 45.2 4.5 6.8 29.1 58.4 12.6 45.7 4.6 6.8

40 48.9 54.6 16.5 38.0 3.3 7.3 45.3 54.7 16.1 38.6 3.4 7.3 43.8 54.8 15.6 39.2 3.5 7.3

50 58.5 52.2 18.6 33.6 2.8 7.7 55.1 52.3 18.1 34.2 2.9 7.6 53.7 52.5 17.6 34.8 3.0 7.6

20

1.5

15 26.1 68.0 11.5 56.4 5.9 10.8 21.6 68.1 11.2 56.9 6.1 10.7 19.8 68.3 10.9 57.4 6.3 10.7

25 35.7 66.0 13.6 52.3 4.8 11.5 31.5 66.1 13.3 52.8 5.0 11.4 29.6 66.3 12.9 53.4 5.1 11.3

40 50.2 62.9 16.8 46.1 3.7 12.5 46.2 63.1 16.3 46.7 3.9 12.4 44.4 63.2 15.9 47.3 4.0 12.3

50 59.9 60.9 18.9 42.0 3.2 13.2 56.0 61.1 18.4 42.7 3.3 13.1 54.3 61.2 17.9 43.3 3.4 13.0

2.5

15 26.5 70.5 11.6 58.9 6.1 14.3 21.9 70.7 11.3 59.4 6.3 14.2 19.9 70.9 11.0 59.9 6.4 14.2

25 36.1 68.1 13.7 54.4 5.0 14.7 31.7 68.3 13.4 54.9 5.1 14.6 29.8 68.5 13.0 55.5 5.3 14.6

40 50.5 64.6 16.9 47.7 3.8 15.3 46.3 64.7 16.5 48.3 3.9 15.3 44.5 64.9 16.0 48.9 4.1 15.2

50 60.1 62.2 19.0 43.2 3.3 15.8 56.1 62.3 18.5 43.8 3.4 15.7 54.4 62.5 18.0 44.5 3.5 15.7

3.5

15 26.9 73.1 11.7 61.4 6.3 15.7 22.1 73.3 11.4 61.9 6.4 15.7 20.1 73.5 11.1 62.4 6.6 15.7

25 36.4 70.3 13.8 56.5 5.1 16.1 31.9 70.5 13.5 57.1 5.2 16.0 29.9 70.7 13.1 57.6 5.4 16.0

40 50.8 66.2 17.0 49.2 3.9 16.6 46.5 66.4 16.6 49.8 4.0 16.5 44.6 66.5 16.1 50.4 4.1 16.5

50 60.3 63.4 19.1 44.3 3.3 16.9 56.2 63.6 18.6 45.0 3.4 16.9 54.4 63.8 18.1 45.6 3.5 16.8

30

1.5

15 27.2 74.8 12.2 62.6 6.1 19.8 22.3 75.0 11.8 63.1 6.3 19.7 20.2 75.1 11.5 63.6 6.5 19.7

25 36.9 73.0 14.3 58.7 5.1 20.5 32.1 73.2 13.9 59.3 5.3 20.4 30.1 73.3 13.5 59.8 5.4 20.3

40Operation not recommended

50

2.5

15 27.6 77.6 12.2 65.3 6.3 23.6 22.6 77.8 11.9 65.9 6.5 23.6 20.4 78.0 11.6 66.4 6.7 23.5

25 37.3 75.4 14.4 61.0 5.3 24.0 32.4 75.6 14.0 61.6 5.4 24.0 30.3 75.8 13.6 62.2 5.6 23.9

40Operation not recommended

50

3.5

15 28.1 80.4 12.3 68.1 6.5 25.3 22.9 80.6 12.0 68.6 6.7 25.2 20.6 80.8 11.7 69.1 6.9 25.2

25 37.7 77.8 14.4 63.4 5.4 25.6 32.6 78.0 14.1 63.9 5.5 25.5 30.5 78.2 13.7 64.5 5.7 25.5

40Operation not recommended

50

NOTE: For part load operation, divide capacity by 2. 3/15/13

Page 35: Commercial Reversible Chiller - 50 Hz

35

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW050 - Performance Data cont.

CoolingSource Load Flow - 1.5 L/s Load Flow - 2.5 L/s Load Flow - 3.5 L/s

EST°C

FlowL/s

ELT°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

0

1.5

10 1.1 54.5 7.8 62.3 7.0 10.1 4.5 56.2 7.9 64.1 7.2 10.4 6.0 58.0 7.9 65.8 7.3 10.7

20 7.4 77.5 7.9 85.4 9.8 13.9 12.2 79.9 8.0 87.9 10.0 14.3 14.3 82.4 8.0 90.4 10.3 14.7

30 13.7 100.5 8.1 108.5 12.5 17.6 19.9 103.7 8.1 111.8 12.8 18.2 22.6 106.9 8.1 115.0 13.1 18.7

45 23.1 134.9 8.2 143.2 16.4 23.3 31.4 139.3 8.3 147.5 16.8 24.0 35.0 143.6 8.3 151.9 17.2 24.7

2.5

10 1.0 55.2 7.5 62.7 7.3 6.1 4.4 57.0 7.6 64.5 7.5 6.3 5.9 58.8 7.6 66.3 7.7 6.5

20 7.2 78.5 7.6 86.2 10.3 8.4 12.1 81.0 7.7 88.7 10.6 8.7 14.2 83.6 7.7 91.2 10.9 8.9

30 13.4 101.9 7.7 109.6 13.2 10.7 19.7 105.1 7.8 112.9 13.5 11.0 22.4 108.4 7.8 116.2 13.9 11.3

45 22.8 136.8 7.9 144.7 17.4 14.1 31.2 141.2 7.9 149.1 17.8 14.5 34.9 145.6 8.0 153.5 18.3 15.0

3.5

10 0.9 56.0 7.2 63.2 7.8 4.4 4.4 57.8 7.3 65.0 8.0 4.5 5.8 59.6 7.3 66.8 8.2 4.7

20 7.1 79.6 7.3 86.9 10.9 6.1 12.0 82.2 7.3 89.5 11.2 6.2 14.1 84.7 7.4 92.1 11.5 6.4

30 13.2 103.2 7.4 110.6 14.0 7.7 19.6 106.5 7.4 114.0 14.4 7.9 22.3 109.8 7.5 117.3 14.7 8.2

45 22.4 138.7 7.5 146.2 18.5 10.2 31.0 143.1 7.5 150.7 19.0 10.5 34.7 147.5 7.6 155.1 19.5 10.8

10

1.5

10 0.7 57.3 9.6 67.0 5.9 20.9 4.2 59.2 9.7 68.9 6.1 21.2 5.7 61.0 9.7 70.7 6.3 21.5

20 6.6 82.4 9.9 92.3 8.3 25.0 11.7 85.0 9.9 95.0 8.6 25.4 13.9 87.7 10.0 97.7 8.8 25.9

30 12.5 107.5 10.1 117.6 10.6 29.1 19.2 110.9 10.2 121.1 10.9 29.7 22.0 114.4 10.2 124.6 11.2 30.3

45 21.4 145.1 10.4 155.5 13.9 35.3 30.4 149.7 10.5 160.2 14.3 36.1 34.2 154.4 10.5 164.9 14.6 36.8

2.5

10 0.5 58.1 9.3 67.4 6.3 16.6 4.1 60.0 9.3 69.3 6.4 16.8 5.7 61.8 9.4 71.2 6.6 16.9

20 6.4 83.6 9.5 93.0 8.8 19.1 11.6 86.2 9.5 95.7 9.1 19.3 13.8 88.9 9.6 98.5 9.3 19.6

30 12.3 109.0 9.7 118.7 11.3 21.6 19.0 112.5 9.7 122.2 11.6 21.9 21.9 115.9 9.8 125.7 11.9 22.3

45 21.1 147.1 10.0 157.1 14.8 25.3 30.2 151.8 10.0 161.8 15.2 25.8 34.1 156.5 10.1 166.6 15.5 26.3

3.5

10 0.4 58.9 8.9 67.8 6.6 14.7 4.1 60.8 9.0 69.8 6.8 14.9 5.6 62.7 9.0 71.7 7.0 15.0

20 6.2 84.7 9.1 93.8 9.3 16.5 11.5 87.4 9.1 96.5 9.6 16.7 13.7 90.1 9.2 99.3 9.8 16.9

30 12.0 110.5 9.2 119.7 12.0 18.3 18.9 114.0 9.3 123.3 12.3 18.6 21.8 117.5 9.3 126.9 12.6 18.8

45 20.8 149.1 9.5 158.6 15.7 21.1 30.0 153.9 9.5 163.4 16.1 21.4 33.9 158.6 9.6 168.2 16.5 21.7

20

1.5

10 1.3 53.7 11.7 65.4 4.6 30.6 4.6 55.4 11.8 67.2 4.7 30.9 6.0 57.2 11.8 69.0 4.8 31.2

20 7.4 77.3 12.0 89.3 6.5 34.5 12.2 79.8 12.0 91.8 6.6 34.9 14.3 82.3 12.1 94.4 6.8 35.3

30 13.6 101.0 12.2 113.2 8.2 38.4 19.8 104.2 12.3 116.5 8.5 38.9 22.5 107.4 12.4 119.8 8.7 39.5

45 Operation not recommended

2.5

10 1.2 54.4 11.2 65.6 4.8 26.4 4.5 56.1 11.3 67.4 5.0 26.6 6.0 57.8 11.4 69.2 5.1 26.7

20 7.3 78.2 11.5 89.7 6.8 28.7 11.7 84.8 11.6 96.4 7.3 29.4 14.2 83.2 11.6 94.8 7.2 29.2

30 13.4 102.0 11.7 113.7 8.7 31.1 18.9 113.5 11.9 125.3 9.6 32.2 22.4 108.5 11.8 120.4 9.2 31.7

45 Operation not recommended

3.5

10 1.1 55.0 10.8 65.8 5.1 24.6 4.5 56.7 10.9 67.6 5.2 24.7 5.9 58.5 10.9 69.4 5.4 24.8

20 7.1 79.0 11.0 90.0 7.2 26.3 12.0 81.6 11.1 92.6 7.4 26.5 14.1 84.1 11.1 95.2 7.6 26.6

30 13.2 103.1 11.2 114.3 9.2 28.0 19.6 106.4 11.3 117.6 9.4 28.2 22.4 109.7 11.3 121.0 9.7 28.4

45 Operation not recommended

30

1.5

10 2.2 47.8 14.3 62.1 3.4 40.1 5.2 49.3 14.3 63.7 3.4 40.4 6.5 50.9 14.4 65.3 3.5 40.6

20 8.8 68.8 14.5 83.3 4.7 43.6 12.7 74.6 14.7 89.3 5.1 44.5 14.9 73.2 14.7 87.9 5.0 44.3

30 15.4 89.8 14.8 104.6 6.1 47.0 20.3 99.9 15.0 114.9 6.7 48.7 23.3 95.5 15.0 110.5 6.4 48.0

45 Operation not recommended

2.5

10 2.1 48.3 13.7 62.1 3.5 36.1 5.1 49.9 13.8 63.7 3.6 36.2 6.4 51.4 13.9 65.3 3.7 36.4

20 8.7 69.7 14.0 83.7 5.0 38.2 12.6 75.6 14.1 89.7 5.4 38.7 14.8 74.2 14.1 88.3 5.3 38.6

30 15.2 91.1 14.2 105.3 6.4 40.3 20.1 101.3 14.3 115.7 7.1 41.3 23.2 96.9 14.3 111.2 6.8 40.9

45 Operation not recommended

3.5

10 2.1 48.9 13.2 62.0 3.7 34.3 5.1 50.4 13.2 63.7 3.8 34.4 6.4 52.0 13.3 65.3 3.9 34.6

20 8.5 70.6 13.4 84.0 5.3 35.9 12.5 76.6 13.5 90.1 5.7 36.3 14.8 75.1 13.5 88.6 5.6 36.2

30 15.0 92.4 13.6 106.0 6.8 37.4 20.0 102.8 13.7 116.5 7.5 38.1 23.2 98.3 13.7 112.0 7.2 37.8

45 Operation not recommended

45

1.5

10 3.5 39.7 17.3 57.0 2.3 54.3 6.0 40.9 17.4 58.4 2.4 54.5 7.1 42.2 17.5 59.7 2.4 54.7

20 10.4 59.1 17.6 76.7 3.4 57.5 13.7 64.4 17.7 82.1 3.6 58.3 15.6 62.9 17.8 80.7 3.5 58.1

30Operation not recommended

45

2.5

10 3.5 40.1 16.7 56.8 2.4 50.5 6.0 41.4 16.7 58.2 2.5 50.7 7.0 42.7 16.8 59.5 2.5 50.8

20 10.3 59.8 16.9 76.7 3.5 52.5 13.7 65.1 17.0 82.1 3.8 53.0 15.6 63.6 17.1 80.7 3.7 52.9

30Operation not recommended

45

3.5

10 3.4 40.6 16.0 56.6 2.5 48.9 5.9 41.9 16.1 57.9 2.6 49.0 7.0 43.2 16.2 59.3 2.7 49.1

20 10.2 60.4 16.2 76.7 3.7 50.3 13.6 65.8 16.4 82.1 4.0 50.7 15.5 64.3 16.4 80.7 3.9 50.6

30Operation not recommended

45

NOTE: For part load operation, divide capacity by 2. 2/2/12

Page 36: Commercial Reversible Chiller - 50 Hz

36

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW060 - Performance Data

HeatingSource Load Flow - 2.0 L/s Load Flow - 3.0 L/s Load Flow - 4.0 L/s

EST°C

FlowL/s

ELT°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

0

3.0

15 21.4 53.7 12.3 41.4 4.4 -3.3 19.3 53.9 12.1 41.7 4.4 -3.3 18.2 54.0 11.9 42.1 4.5 -3.3

25 31.2 52.0 14.7 37.3 3.5 -3.0 29.1 52.1 14.5 37.7 3.6 -3.0 28.1 52.3 14.2 38.1 3.7 -3.0

40 45.9 49.4 18.4 31.1 2.7 -2.5 43.9 49.6 18.0 31.6 2.8 -2.5 43.0 49.7 17.7 32.0 2.8 -2.5

50 55.7 47.7 20.8 27.0 2.3 -2.1 53.8 47.9 20.4 27.5 2.3 -2.2 52.9 48.0 20.0 28.0 2.4 -2.2

4.0

15 21.6 55.7 12.4 43.3 4.5 -2.6 19.4 55.9 12.2 43.7 4.6 -2.6 18.3 56.0 12.0 44.0 4.7 -2.6

25 31.4 53.7 14.8 38.9 3.6 -2.3 29.3 53.9 14.6 39.3 3.7 -2.3 28.2 54.0 14.3 39.7 3.8 -2.4

40 46.0 50.7 18.5 32.3 2.7 -1.9 44.0 50.9 18.1 32.7 2.8 -1.9 43.0 51.0 17.8 33.2 2.9 -2.0

50 55.8 48.8 20.9 27.9 2.3 -1.7 53.9 48.9 20.5 28.4 2.4 -1.7 52.9 49.0 20.1 28.9 2.4 -1.7

10

2.0

15 23.0 65.7 13.3 52.4 4.9 3.6 20.4 65.9 13.0 52.9 5.1 3.5 19.0 66.0 12.6 53.4 5.2 3.5

25 32.8 64.0 15.6 48.4 4.1 4.1 30.2 64.2 15.2 49.0 4.2 4.0 28.9 64.3 14.8 49.6 4.4 4.0

40 47.5 61.5 19.1 42.4 3.2 4.8 45.0 61.6 18.6 43.1 3.3 4.7 43.8 61.8 18.1 43.7 3.4 4.7

50 57.3 59.8 21.4 38.4 2.8 5.3 54.9 59.9 20.8 39.1 2.9 5.2 53.7 60.1 20.2 39.8 3.0 5.1

3.0

15 23.3 68.2 13.4 54.8 5.1 5.5 20.6 68.4 13.0 55.4 5.2 5.5 19.2 68.6 12.7 55.9 5.4 5.5

25 33.1 66.2 15.7 50.5 4.2 5.9 30.4 66.4 15.3 51.1 4.3 5.8 29.1 66.5 14.9 51.6 4.5 5.8

40 47.7 63.1 19.2 44.0 3.3 6.4 45.1 63.3 18.7 44.6 3.4 6.4 43.9 63.5 18.2 45.3 3.5 6.3

50 57.5 61.1 21.5 39.6 2.8 6.8 55.0 61.2 20.9 40.3 2.9 6.7 53.7 61.4 20.4 41.0 3.0 6.7

4.0

15 23.6 70.8 13.5 57.3 5.2 6.5 20.8 70.9 13.1 57.8 5.4 6.5 19.3 71.1 12.8 58.3 5.6 6.4

25 33.3 68.4 15.8 52.6 4.3 6.8 30.6 68.5 15.4 53.1 4.5 6.8 29.2 68.7 15.0 53.7 4.6 6.7

40 47.9 64.8 19.3 45.5 3.4 7.2 45.3 65.0 18.8 46.2 3.5 7.2 44.0 65.1 18.3 46.8 3.6 7.1

50 57.6 62.4 21.6 40.8 2.9 7.5 55.1 62.6 21.1 41.5 3.0 7.5 53.8 62.7 20.5 42.2 3.1 7.4

20

2.0

15 24.7 79.6 13.8 65.8 5.8 12.0 21.5 79.8 13.5 66.4 5.9 11.9 19.9 80.0 13.1 66.9 6.1 11.8

25 34.5 77.7 16.2 61.5 4.8 12.5 31.3 77.9 15.7 62.1 5.0 12.4 29.8 78.1 15.3 62.8 5.1 12.3

40 49.1 74.7 19.6 55.1 3.8 13.3 46.1 74.9 19.1 55.8 3.9 13.2 44.6 75.1 18.6 56.5 4.0 13.1

50 58.9 72.8 21.9 50.8 3.3 13.8 55.9 73.0 21.4 51.6 3.4 13.7 54.5 73.2 20.8 52.4 3.5 13.6

3.0

15 25.1 82.6 13.9 68.7 5.9 14.4 21.7 82.8 13.6 69.3 6.1 14.4 20.1 83.0 13.2 69.8 6.3 14.3

25 34.8 80.3 16.3 64.0 4.9 14.8 31.5 80.5 15.8 64.6 5.1 14.7 29.9 80.7 15.4 65.2 5.2 14.7

40 49.4 76.7 19.8 56.9 3.9 15.4 46.3 76.9 19.2 57.6 4.0 15.3 44.7 77.1 18.7 58.3 4.1 15.3

50 59.1 74.3 22.1 52.2 3.4 15.8 56.1 74.5 21.5 53.0 3.5 15.7 54.6 74.7 20.9 53.7 3.6 15.6

4.0

15 25.4 85.6 14.0 71.6 6.1 15.6 22.0 85.8 13.7 72.2 6.3 15.6 20.2 86.1 13.3 72.8 6.5 15.6

25 35.1 82.8 16.4 66.5 5.1 15.9 31.8 83.0 15.9 67.1 5.2 15.9 30.1 83.2 15.5 67.7 5.4 15.9

40 49.6 78.6 19.9 58.7 4.0 16.4 46.4 78.8 19.4 59.5 4.1 16.4 44.8 79.0 18.9 60.2 4.2 16.3

50 59.2 75.8 22.2 53.6 3.4 16.7 56.2 76.0 21.7 54.4 3.5 16.7 54.6 76.2 21.1 55.1 3.6 16.6

30

2.0

15 25.7 87.6 14.6 73.0 6.0 21.1 22.1 87.8 14.2 73.6 6.2 21.0 20.4 88.0 13.8 74.2 6.4 21.0

25 35.5 86.0 16.9 69.1 5.1 21.6 32.0 86.2 16.5 69.7 5.2 21.5 30.3 86.4 16.0 70.4 5.4 21.4

40Operation not recommended

50

3.0

15 26.1 90.9 14.7 76.2 6.2 23.8 22.4 91.1 14.3 76.8 6.4 23.8 20.6 91.3 13.9 77.4 6.6 23.7

25 35.8 88.8 17.0 71.8 5.2 24.2 32.2 89.0 16.6 72.5 5.4 24.1 30.4 89.3 16.1 73.1 5.5 24.1

40Operation not recommended

50

4.0

15 26.5 94.2 14.8 79.4 6.4 25.2 22.7 94.4 14.4 80.0 6.6 25.1 20.8 94.7 14.0 80.6 6.8 25.1

25 36.2 91.6 17.1 74.5 5.4 25.5 32.5 91.9 16.7 75.2 5.5 25.4 30.6 92.1 16.2 75.9 5.7 25.4

40Operation not recommended

50

NOTE: For part load operation, divide capacity by 2. 3/15/13

Page 37: Commercial Reversible Chiller - 50 Hz

37

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW060 - Performance Data cont.

CoolingSource Load Flow - 2.0 L/s Load Flow - 3.0 L/s Load Flow - 4.0 L/s

EST°C

FlowL/s

ELT°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

0

2.0

10 2.0 65.9 10.0 75.9 6.6 9.3 4.5 68.0 10.1 78.1 6.7 9.5 5.7 70.1 10.1 80.2 6.9 9.8

20 9.0 90.3 10.2 100.5 8.8 12.3 12.4 93.1 10.3 103.4 9.1 12.6 14.1 96.0 10.3 106.3 9.3 13.0

30 16.0 114.6 10.4 125.0 11.0 15.2 20.4 118.3 10.5 128.7 11.3 15.7 22.6 121.9 10.5 132.4 11.6 16.2

45 26.6 151.2 10.7 161.8 14.2 19.7 32.3 156.0 10.7 166.7 14.6 20.3 35.2 160.8 10.8 171.6 14.9 20.9

3.0

10 1.9 66.8 9.7 76.5 6.9 6.2 4.4 68.9 9.7 78.6 7.1 6.4 5.7 71.1 9.8 80.8 7.3 6.6

20 8.8 91.5 9.8 101.3 9.3 8.2 12.3 94.4 9.9 104.3 9.6 8.5 14.1 97.4 9.9 107.3 9.8 8.7

30 15.8 116.2 10.0 126.2 11.7 10.3 20.2 119.9 10.0 129.9 12.0 10.6 22.5 123.6 10.1 133.7 12.3 10.9

45 26.3 153.3 10.2 163.5 15.1 13.3 32.1 158.2 10.2 168.4 15.5 13.7 35.1 163.1 10.3 173.3 15.9 14.1

4.0

10 1.7 67.7 9.3 77.0 7.3 4.7 4.3 69.9 9.3 79.2 7.5 4.8 5.6 72.0 9.4 81.4 7.7 5.0

20 8.7 92.8 9.4 102.2 9.9 6.2 12.2 95.7 9.4 105.2 10.1 6.4 14.0 98.7 9.5 108.2 10.4 6.6

30 15.6 117.8 9.5 127.3 12.4 7.8 20.1 121.6 9.6 131.1 12.7 8.0 22.4 125.3 9.6 134.9 13.0 8.2

45 26.1 155.4 9.7 165.1 16.0 10.1 32.0 160.3 9.7 170.1 16.5 10.4 34.9 165.3 9.8 175.1 16.9 10.7

10

2.0

10 1.5 69.4 12.4 81.8 5.6 20.0 4.2 71.6 12.5 84.0 5.7 20.2 5.5 73.8 12.5 86.3 5.9 20.5

20 8.3 96.0 12.7 108.7 7.5 23.3 11.9 99.1 12.8 111.8 7.8 23.6 13.8 102.1 12.8 115.0 8.0 24.0

30 15.0 122.6 13.0 135.6 9.4 26.5 19.7 126.5 13.1 139.6 9.7 27.0 22.0 130.4 13.2 143.6 9.9 27.5

45 25.2 162.6 13.5 176.1 12.0 31.5 31.4 167.7 13.6 181.3 12.4 32.1 34.5 172.9 13.6 186.6 12.7 32.8

3.0

10 1.4 70.3 11.9 82.3 5.9 16.7 4.1 72.6 12.0 84.6 6.1 16.9 5.4 74.8 12.0 86.9 6.2 17.1

20 8.1 97.3 12.2 109.5 8.0 18.9 11.8 100.4 12.3 112.7 8.2 19.2 13.7 103.5 12.3 115.9 8.4 19.4

30 14.8 124.3 12.5 136.8 10.0 21.1 19.6 128.3 12.5 140.8 10.2 21.4 21.9 132.3 12.6 144.9 10.5 21.8

45 24.9 164.8 12.9 177.7 12.8 24.4 31.2 170.1 12.9 183.0 13.1 24.9 34.3 175.3 13.0 188.3 13.5 25.3

4.0

10 1.3 71.3 11.5 82.7 6.2 15.0 4.0 73.6 11.5 85.1 6.4 15.2 5.4 75.8 11.6 87.4 6.6 15.3

20 8.0 98.7 11.7 110.3 8.4 16.7 11.7 101.8 11.7 113.5 8.7 16.9 13.6 105.0 11.8 116.8 8.9 17.1

30 14.6 126.0 11.9 137.9 10.6 18.4 19.4 130.0 12.0 142.0 10.9 18.7 21.8 134.1 12.0 146.1 11.1 18.9

45 24.6 167.1 12.3 179.3 13.6 20.9 31.0 172.4 12.3 184.7 14.0 21.3 34.2 177.7 12.4 190.1 14.3 21.6

20

2.0

10 2.1 65.0 15.0 80.0 4.3 29.8 4.5 67.1 15.1 82.2 4.4 30.0 5.8 69.1 15.2 84.3 4.6 30.3

20 9.0 90.1 15.4 105.5 5.8 32.9 12.4 92.9 15.5 108.4 6.0 33.2 14.2 95.8 15.6 111.4 6.2 33.6

30 16.0 115.2 15.8 130.9 7.3 36.0 20.3 118.8 15.9 134.7 7.5 36.4 22.5 122.5 16.0 138.5 7.7 36.9

45 Operation not recommended

3.0

10 2.0 65.8 14.5 80.2 4.5 26.5 4.5 67.9 14.5 82.4 4.7 26.7 5.7 69.9 14.6 84.6 4.8 26.9

20 8.9 91.1 14.8 105.9 6.2 28.6 12.0 98.3 14.9 113.2 6.6 29.2 14.1 96.9 14.9 111.8 6.5 29.1

30 15.8 116.4 15.1 131.5 7.7 30.7 19.5 128.8 15.3 144.1 8.4 31.7 22.5 123.8 15.3 139.1 8.1 31.3

45 Operation not recommended

4.0

10 1.9 66.5 13.9 80.4 4.8 24.9 4.4 68.6 14.0 82.6 4.9 25.0 5.7 70.8 14.0 84.8 5.0 25.2

20 8.8 92.1 14.2 106.2 6.5 26.5 12.3 95.0 14.2 109.2 6.7 26.7 14.0 97.9 14.3 112.2 6.8 26.8

30 15.7 117.6 14.4 132.0 8.1 28.1 20.1 121.3 14.5 135.9 8.4 28.3 22.4 125.1 14.6 139.7 8.6 28.5

45 Operation not recommended

30

2.0

10 2.9 57.8 18.3 76.2 3.2 39.3 5.1 59.7 18.4 78.1 3.2 39.5 6.2 61.5 18.5 80.0 3.3 39.8

20 10.2 80.1 18.7 98.8 4.3 42.1 13.0 86.5 18.9 105.4 4.6 42.9 14.8 85.2 18.9 104.2 4.5 42.7

30 17.5 102.4 19.1 121.5 5.4 44.8 20.8 113.4 19.3 132.7 5.9 46.2 23.4 109.0 19.3 128.3 5.6 45.6

45 Operation not recommended

3.0

10 2.9 58.5 17.6 76.1 3.3 36.2 5.1 60.3 17.7 78.1 3.4 36.3 6.2 62.2 17.8 80.0 3.5 36.5

20 10.1 81.2 18.0 99.2 4.5 38.1 12.9 87.7 18.1 105.8 4.8 38.6 14.7 86.4 18.2 104.5 4.8 38.5

30 17.3 103.9 18.3 122.2 5.7 39.9 20.6 115.0 18.5 133.5 6.2 40.9 23.3 110.5 18.5 129.0 6.0 40.5

45 Operation not recommended

4.0

10 2.8 59.1 16.9 76.1 3.5 34.6 5.0 61.0 17.0 78.0 3.6 34.8 6.2 62.9 17.1 80.0 3.7 34.9

20 10.0 82.3 17.2 99.5 4.8 36.1 12.8 88.9 17.3 106.2 5.1 36.5 14.7 87.5 17.4 104.9 5.0 36.4

30 17.1 105.4 17.5 122.9 6.0 37.5 20.5 116.7 17.7 134.4 6.6 38.2 23.2 112.1 17.7 129.8 6.3 37.9

45 Operation not recommended

45

2.0

10 4.1 48.0 22.3 70.3 2.2 53.6 6.0 49.5 22.4 71.9 2.2 53.8 6.9 51.1 22.5 73.6 2.3 54.0

20 11.6 68.8 22.6 91.4 3.0 56.2 13.9 74.6 22.8 97.4 3.3 56.9 15.5 73.2 22.9 96.1 3.2 56.7

30Operation not recommended

45

3.0

10 4.1 48.5 21.4 70.0 2.3 50.7 5.9 50.1 21.5 71.6 2.3 50.8 6.9 51.6 21.6 73.3 2.4 51.0

20 11.5 69.5 21.8 91.3 3.2 52.4 13.9 75.4 22.0 97.3 3.4 52.9 15.5 74.0 22.0 96.0 3.4 52.8

30Operation not recommended

45

4.0

10 4.0 49.1 20.6 69.6 2.4 49.2 5.9 50.6 20.7 71.3 2.4 49.3 6.8 52.2 20.8 73.0 2.5 49.5

20 11.4 70.3 20.9 91.2 3.4 50.6 13.8 76.2 21.1 97.2 3.6 50.9 15.4 74.8 21.1 95.9 3.5 50.8

30Operation not recommended

45

NOTE: For part load operation, divide capacity by 2. 2/2/12

Page 38: Commercial Reversible Chiller - 50 Hz

38

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW090 - Performance Data

HeatingSource Load Flow - 3.0 L/s Load Flow - 4.5 L/s Load Flow - 6.0 L/s

EST°C

FlowL/s

ELT°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

0

4.5

15 21.1 76.6 18.6 58.0 4.1 -3.1 19.1 76.8 18.3 58.5 4.2 -3.1 18.1 77.0 18.0 59.0 4.3 -3.1

25 30.9 74.5 22.3 52.2 3.3 -2.8 28.9 74.6 21.9 52.7 3.4 -2.8 28.0 74.8 21.5 53.3 3.5 -2.8

40 45.7 71.3 27.8 43.4 2.6 -2.3 43.8 71.5 27.3 44.1 2.6 -2.3 42.8 71.6 26.8 44.8 2.7 -2.4

50 55.5 69.2 31.5 37.6 2.2 -2.0 53.7 69.3 30.9 38.4 2.2 -2.0 52.8 69.5 30.3 39.2 2.3 -2.1

6.0

15 21.3 79.4 18.7 60.7 4.2 -2.4 19.2 79.6 18.4 61.2 4.3 -2.4 18.2 79.8 18.1 61.7 4.4 -2.4

25 31.1 76.9 22.4 54.5 3.4 -2.2 29.1 77.1 22.0 55.0 3.5 -2.2 28.1 77.3 21.6 55.6 3.6 -2.2

40 45.8 73.1 28.0 45.1 2.6 -1.8 43.9 73.3 27.5 45.8 2.7 -1.8 42.9 73.5 27.0 46.6 2.7 -1.8

50 55.6 70.6 31.7 38.9 2.2 -1.5 53.7 70.8 31.1 39.7 2.3 -1.6 52.8 71.0 30.5 40.5 2.3 -1.6

10

3.0

15 22.6 93.6 20.1 73.6 4.7 4.0 20.1 93.9 19.5 74.3 4.8 4.0 18.8 94.1 19.0 75.1 4.9 3.9

25 32.5 91.6 23.6 68.0 3.9 4.5 30.0 91.9 23.0 68.9 4.0 4.4 28.7 92.1 22.4 69.7 4.1 4.3

40 47.2 88.6 28.9 59.7 3.1 5.1 44.8 88.9 28.1 60.7 3.2 5.1 43.6 89.1 27.4 61.7 3.3 5.0

50 57.0 86.6 32.4 54.2 2.7 5.6 54.7 86.8 31.6 55.3 2.8 5.5 53.5 87.1 30.7 56.3 2.8 5.4

4.5

15 22.9 97.2 20.2 77.0 4.8 5.8 20.3 97.5 19.7 77.8 5.0 5.8 19.0 97.7 19.1 78.6 5.1 5.7

25 32.7 94.8 23.7 71.0 4.0 6.2 30.1 95.0 23.1 71.9 4.1 6.1 28.9 95.2 22.5 72.7 4.2 6.1

40 47.4 91.0 29.1 61.9 3.1 6.6 44.9 91.2 28.3 62.9 3.2 6.6 43.7 91.5 27.6 63.9 3.3 6.5

50 57.2 88.5 32.6 55.9 2.7 7.0 54.8 88.7 31.8 57.0 2.8 6.9 53.6 89.0 30.9 58.1 2.9 6.9

6.0

15 23.2 100.8 20.3 80.5 5.0 6.7 20.5 101.1 19.8 81.3 5.1 6.7 19.1 101.3 19.3 82.1 5.3 6.7

25 33.0 97.9 23.9 74.0 4.1 7.0 30.3 98.1 23.3 74.8 4.2 7.0 29.0 98.4 22.7 75.7 4.3 6.9

40 47.6 93.4 29.3 64.1 3.2 7.4 45.1 93.6 28.5 65.1 3.3 7.4 43.8 93.9 27.7 66.1 3.4 7.3

50 57.4 90.4 32.8 57.6 2.8 7.7 54.9 90.7 32.0 58.7 2.8 7.6 53.7 90.9 31.1 59.8 2.9 7.6

20

3.0

15 24.2 113.5 20.9 92.6 5.4 12.5 21.2 113.8 20.3 93.4 5.6 12.4 19.6 114.0 19.8 94.3 5.8 12.3

25 34.0 111.2 24.4 86.8 4.6 12.9 31.0 111.5 23.8 87.7 4.7 12.9 29.5 111.7 23.1 88.6 4.8 12.8

40 48.8 107.8 29.7 78.0 3.6 13.7 45.9 108.0 29.0 79.1 3.7 13.6 44.4 108.3 28.2 80.1 3.8 13.5

50 58.6 105.5 33.3 72.2 3.2 14.1 55.7 105.7 32.4 73.3 3.3 14.0 54.3 106.0 31.6 74.4 3.4 13.9

4.5

15 24.6 117.7 21.0 96.7 5.6 14.8 21.4 118.0 20.5 97.6 5.8 14.7 19.8 118.3 19.9 98.4 5.9 14.7

25 34.3 114.9 24.6 90.3 4.7 15.1 31.2 115.2 23.9 91.2 4.8 15.1 29.7 115.4 23.3 92.1 5.0 15.0

40 49.0 110.5 29.9 80.6 3.7 15.6 46.0 110.8 29.2 81.7 3.8 15.6 44.5 111.1 28.4 82.7 3.9 15.5

50 58.8 107.7 33.5 74.1 3.2 16.0 55.9 107.9 32.6 75.3 3.3 15.9 54.4 108.2 31.8 76.4 3.4 15.9

6.0

15 24.9 122.0 21.2 100.9 5.8 15.9 21.6 122.3 20.6 101.7 5.9 15.9 20.0 122.6 20.0 102.6 6.1 15.8

25 34.6 118.5 24.7 93.8 4.8 16.2 31.4 118.8 24.1 94.7 4.9 16.1 29.8 119.1 23.5 95.7 5.1 16.1

40 49.2 113.3 30.1 83.2 3.8 16.6 46.2 113.6 29.4 84.3 3.9 16.6 44.6 113.9 28.6 85.3 4.0 16.5

50 58.9 109.9 33.7 76.1 3.3 16.9 56.0 110.1 32.9 77.3 3.4 16.9 54.5 110.4 32.0 78.4 3.5 16.8

30

3.0

15 25.1 124.8 22.0 102.8 5.7 21.6 21.8 125.1 21.4 103.7 5.8 21.6 20.1 125.4 20.9 104.6 6.0 21.5

25 35.0 123.1 25.5 97.5 4.8 22.1 31.7 123.4 24.9 98.5 5.0 22.0 30.0 123.7 24.2 99.5 5.1 21.9

40Operation not recommended

50

4.5

15 25.5 129.5 22.2 107.4 5.8 24.2 22.0 129.8 21.6 108.3 6.0 24.1 20.3 130.2 21.0 109.2 6.2 24.1

25 35.3 127.1 25.7 101.4 4.9 24.5 31.9 127.4 25.0 102.4 5.1 24.5 30.2 127.8 24.4 103.4 5.2 24.4

40Operation not recommended

50

6.0

15 25.9 134.2 22.3 111.9 6.0 25.5 22.3 134.6 21.7 112.8 6.2 25.4 20.5 134.9 21.2 113.7 6.4 25.4

25 35.7 131.2 25.9 105.3 5.1 25.7 32.1 131.5 25.2 106.3 5.2 25.7 30.4 131.8 24.5 107.3 5.4 25.6

40Operation not recommended

50

NOTE: For part load operation, divide capacity by 2. 3/15/13

Page 39: Commercial Reversible Chiller - 50 Hz

39

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW090 - Performance Data cont.

CoolingSource Load Flow - 3.0 L/s Load Flow - 4.5 L/s Load Flow - 6.0 L/s

EST°C

FlowL/s

ELT°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

0

3.0

10 2.5 92.2 13.8 106.0 6.7 8.6 4.8 95.1 13.9 109.0 6.9 8.9 6.0 98.1 13.9 112.0 7.0 9.1

20 10.4 117.7 14.4 132.1 8.2 10.7 13.4 121.5 14.4 135.9 8.4 11.1 14.9 125.3 14.5 139.8 8.6 11.4

30 18.4 143.3 14.9 158.2 9.6 12.9 22.0 147.9 15.0 162.9 9.8 13.2 23.8 152.4 15.1 167.5 10.1 13.6

45 30.2 181.6 15.8 197.4 11.5 16.0 34.8 187.4 15.9 203.3 11.8 16.5 37.1 193.2 15.9 209.2 12.1 17.0

4.5

10 2.4 93.5 13.3 106.7 7.0 5.8 4.8 96.4 13.3 109.8 7.2 6.0 6.0 99.4 13.4 112.8 7.4 6.1

20 10.3 119.4 13.8 133.2 8.7 7.2 13.3 123.2 13.9 137.0 8.9 7.4 14.8 127.0 13.9 140.9 9.1 7.6

30 18.2 145.3 14.3 159.6 10.2 8.6 21.9 149.9 14.4 164.3 10.4 8.9 23.7 154.6 14.4 169.0 10.7 9.2

45 30.0 184.1 15.1 199.2 12.2 10.8 34.7 190.0 15.1 205.2 12.5 11.1 37.0 195.9 15.2 211.1 12.9 11.4

6.0

10 2.3 94.7 12.7 107.5 7.4 4.4 4.7 97.8 12.8 110.6 7.6 4.5 5.9 100.8 12.9 113.7 7.8 4.6

20 10.2 121.0 13.2 134.2 9.2 5.5 13.2 124.9 13.3 138.1 9.4 5.6 14.8 128.7 13.3 142.1 9.6 5.8

30 18.0 147.3 13.7 160.9 10.8 6.5 21.8 152.0 13.7 165.7 11.1 6.7 23.6 156.7 13.8 170.5 11.4 6.9

45 29.8 186.7 14.4 201.0 13.0 8.2 34.6 192.6 14.4 207.0 13.4 8.4 36.9 198.6 14.5 213.1 13.7 8.7

10

3.0

10 2.1 97.0 17.0 114.1 5.7 19.3 4.6 100.1 17.1 117.3 5.8 19.5 5.8 103.2 17.2 120.5 6.0 19.8

20 9.8 125.1 17.9 143.0 7.0 21.6 13.0 129.1 18.0 147.1 7.2 22.0 14.6 133.1 18.1 151.2 7.4 22.3

30 17.5 153.2 18.7 171.9 8.2 24.0 21.4 158.1 18.8 176.9 8.4 24.4 23.4 163.0 18.9 181.9 8.6 24.8

45 29.1 195.3 20.0 215.3 9.8 27.5 34.1 201.5 20.1 221.6 10.0 28.0 36.6 207.8 20.2 227.9 10.3 28.5

4.5

10 2.0 98.4 16.4 114.8 6.0 16.2 4.5 101.5 16.5 118.0 6.2 16.4 5.7 104.7 16.6 121.2 6.3 16.6

20 9.7 126.8 17.2 144.0 7.4 17.8 12.9 130.9 17.2 148.1 7.6 18.0 14.5 134.9 17.3 152.3 7.8 18.3

30 17.4 155.3 17.9 173.2 8.7 19.4 21.3 160.3 18.0 178.3 8.9 19.7 23.3 165.2 18.1 183.3 9.1 19.9

45 28.9 198.0 19.1 217.1 10.4 21.8 33.9 204.3 19.2 223.5 10.7 22.1 36.4 210.6 19.3 229.9 10.9 22.5

6.0

10 1.9 99.7 15.7 115.5 6.3 14.7 4.4 102.9 15.8 118.7 6.5 14.8 5.7 106.1 15.9 122.0 6.7 15.0

20 9.5 128.6 16.4 145.0 7.8 15.9 12.8 132.7 16.5 149.2 8.0 16.1 14.4 136.8 16.6 153.4 8.2 16.2

30 17.2 157.4 17.1 174.6 9.2 17.1 21.2 162.5 17.2 179.7 9.4 17.3 23.2 167.5 17.3 184.8 9.7 17.5

45 28.7 200.7 18.2 218.9 11.0 18.9 33.8 207.1 18.3 225.4 11.3 19.2 36.3 213.5 18.4 231.9 11.6 19.4

20

3.0

10 2.6 90.9 20.7 111.6 4.4 29.1 4.9 93.8 20.8 114.6 4.5 29.3 6.1 96.7 20.9 117.6 4.6 29.6

20 10.5 117.4 21.7 139.1 5.4 31.3 13.4 121.1 21.8 142.9 5.6 31.6 14.9 124.9 21.9 146.8 5.7 31.9

30 18.3 143.8 22.7 166.5 6.3 33.5 22.0 148.4 22.8 171.2 6.5 33.9 23.8 153.0 22.9 176.0 6.7 34.3

45 Operation not recommended

4.5

10 2.5 92.0 19.9 111.9 4.6 26.1 4.9 94.9 20.0 114.9 4.8 26.2 6.0 97.9 20.1 117.9 4.9 26.4

20 10.4 118.7 20.8 139.5 5.7 27.6 13.1 127.1 21.1 148.1 6.0 28.0 14.9 126.3 21.0 147.3 6.0 28.0

30 18.2 145.4 21.7 167.1 6.7 29.1 21.4 159.2 22.1 181.3 7.2 29.8 23.7 154.7 21.9 176.6 7.0 29.6

45 Operation not recommended

6.0

10 2.4 93.1 19.1 112.1 4.9 24.6 4.8 96.0 19.2 115.2 5.0 24.7 6.0 99.0 19.3 118.3 5.1 24.8

20 10.2 120.0 19.9 139.9 6.0 25.7 13.3 123.8 20.0 143.8 6.2 25.8 14.8 127.6 20.1 147.8 6.3 26.0

30 18.1 146.9 20.8 167.7 7.1 26.8 21.8 151.6 20.9 172.5 7.3 27.0 23.6 156.3 21.0 177.2 7.5 27.2

45 Operation not recommended

30

3.0

10 3.4 80.9 25.2 106.1 3.2 38.6 5.5 83.5 25.3 108.8 3.3 38.8 6.5 86.1 25.5 111.5 3.4 39.1

20 11.5 104.4 26.3 130.8 4.0 40.6 13.9 111.8 26.7 138.5 4.2 41.3 15.5 111.1 26.6 137.7 4.2 41.2

30 19.6 127.9 27.5 155.4 4.7 42.6 22.4 140.1 28.0 168.1 5.0 43.7 24.5 136.1 27.8 163.9 4.9 43.3

45 Operation not recommended

4.5

10 3.3 81.8 24.2 106.0 3.4 35.7 5.4 84.4 24.4 108.8 3.5 35.9 6.5 87.0 24.5 111.5 3.6 36.0

20 11.4 105.8 25.3 131.1 4.2 37.1 13.9 113.3 25.6 138.9 4.4 37.5 15.4 112.5 25.5 138.1 4.4 37.5

30 19.4 129.8 26.3 156.1 4.9 38.5 22.3 142.2 26.8 168.9 5.3 39.2 24.4 138.1 26.6 164.6 5.2 38.9

45 Operation not recommended

6.0

10 3.3 82.7 23.3 106.0 3.6 34.3 5.4 85.4 23.4 108.7 3.7 34.4 6.4 88.0 23.5 111.5 3.7 34.5

20 11.3 107.2 24.2 131.4 4.4 35.3 13.8 114.8 24.5 139.3 4.7 35.7 15.4 114.0 24.4 138.4 4.7 35.6

30 19.3 131.6 25.1 156.7 5.2 36.4 22.2 144.2 25.6 169.8 5.6 36.9 24.3 140.0 25.4 165.4 5.5 36.7

45 Operation not recommended

45

3.0

10 4.5 67.1 30.6 97.8 2.2 52.9 6.2 69.3 30.8 100.1 2.3 53.1 7.1 71.4 30.9 102.4 2.3 53.3

20 12.7 89.4 31.8 121.3 2.8 54.9 14.8 96.1 32.2 128.3 3.0 55.4 16.1 95.1 32.2 127.3 3.0 55.3

30Operation not recommended

45

4.5

10 4.5 67.9 29.4 97.3 2.3 50.3 6.2 70.1 29.6 99.7 2.4 50.4 7.1 72.2 29.7 102.0 2.4 50.5

20 12.7 90.4 30.6 121.0 3.0 51.6 14.7 97.1 31.0 128.1 3.1 51.9 16.1 96.2 30.9 127.1 3.1 51.9

30Operation not recommended

45

6.0

10 4.4 68.7 28.3 96.9 2.4 48.9 6.2 70.8 28.4 99.3 2.5 49.0 7.0 73.0 28.6 101.6 2.6 49.1

20 12.6 91.3 29.4 120.7 3.1 49.9 14.7 98.2 29.7 127.9 3.3 50.2 16.0 97.2 29.7 126.9 3.3 50.2

30Operation not recommended

45

NOTE: For part load operation, divide capacity by 2. 2/2/12

Page 40: Commercial Reversible Chiller - 50 Hz

40

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW130 - Performance Data

HeatingSource Load Flow - 4.5 L/s Load Flow - 7.0 L/s Load Flow - 8.5 L/s

EST°C

FlowL/s

ELT°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

LLT°C

HCkW

PowerkW

HEkW

COPLST°C

0

7.0

15 21.6 124.9 24.2 100.7 5.2 -3.4 19.3 125.3 23.7 101.6 5.3 -3.5 18.5 125.6 23.4 102.2 5.4 -3.5

25 31.4 120.6 31.5 89.1 3.8 -3.0 29.1 120.9 30.8 90.2 3.9 -3.1 28.4 121.2 30.4 90.8 4.0 -3.1

40 46.0 114.0 42.4 71.6 2.7 -2.4 43.9 114.4 41.4 73.0 2.8 -2.5 43.2 114.6 40.8 73.8 2.8 -2.5

50 55.8 109.7 49.7 60.0 2.2 -2.0 53.7 110.0 48.5 61.5 2.3 -2.1 53.1 110.2 47.8 62.5 2.3 -2.1

8.5

15 21.8 128.4 24.3 104.0 5.3 -2.9 19.4 128.8 23.8 104.9 5.4 -2.9 18.6 129.0 23.5 105.5 5.5 -3.0

25 31.5 123.5 31.6 91.9 3.9 -2.6 29.2 123.9 30.9 93.0 4.0 -2.6 28.5 124.1 30.5 93.6 4.1 -2.6

40 46.2 116.3 42.6 73.7 2.7 -2.1 44.0 116.6 41.6 75.0 2.8 -2.1 43.3 116.9 41.0 75.9 2.9 -2.1

50 55.9 111.4 49.9 61.5 2.2 -1.7 53.8 111.8 48.7 63.1 2.3 -1.8 53.1 112.0 48.0 64.0 2.3 -1.8

10

4.5

15 23.2 151.4 26.1 125.3 5.8 3.2 20.3 151.9 25.2 126.7 6.0 3.1 19.4 152.1 24.7 127.5 6.2 3.1

25 33.0 147.2 33.2 114.0 4.4 3.8 30.1 147.6 32.1 115.5 4.6 3.7 29.2 147.9 31.5 116.5 4.7 3.7

40 47.6 140.9 43.9 97.0 3.2 4.7 44.9 141.3 42.5 98.9 3.3 4.6 44.1 141.6 41.6 100.0 3.4 4.6

50 57.4 136.7 51.0 85.6 2.7 5.4 54.8 137.1 49.4 87.7 2.8 5.2 53.9 137.3 48.4 89.0 2.8 5.2

7.0

15 23.6 158.7 26.3 132.4 6.0 5.4 20.5 159.2 25.4 133.7 6.3 5.3 19.6 159.4 24.9 134.5 6.4 5.3

25 33.3 153.4 33.5 120.0 4.6 5.8 30.4 153.9 32.4 121.6 4.8 5.8 29.4 154.2 31.7 122.5 4.9 5.7

40 47.9 145.6 44.2 101.4 3.3 6.5 45.1 146.1 42.8 103.3 3.4 6.4 44.2 146.3 41.9 104.4 3.5 6.4

50 57.6 140.4 51.4 89.0 2.7 6.9 54.9 140.8 49.7 91.1 2.8 6.8 54.0 141.1 48.7 92.4 2.9 6.8

8.5

15 23.8 163.0 26.4 136.6 6.2 6.1 20.7 163.5 25.5 138.0 6.4 6.0 19.7 163.8 25.0 138.8 6.5 6.0

25 33.5 157.2 33.6 123.6 4.7 6.5 30.5 157.7 32.5 125.2 4.8 6.4 29.5 158.0 31.9 126.1 5.0 6.4

40 48.0 148.5 44.4 104.0 3.3 7.0 45.2 148.9 43.0 105.9 3.5 7.0 44.3 149.2 42.1 107.1 3.5 6.9

50 57.7 142.6 51.7 91.0 2.8 7.4 55.0 143.1 50.0 93.1 2.9 7.3 54.1 143.4 49.0 94.4 2.9 7.3

20

4.5

15 24.9 183.4 27.1 156.3 6.8 11.5 21.4 184.0 26.2 157.8 7.0 11.4 20.3 184.4 25.7 158.7 7.2 11.4

25 34.7 178.6 34.3 144.2 5.2 12.2 31.2 179.1 33.2 145.9 5.4 12.1 30.1 179.5 32.5 146.9 5.5 12.0

40 49.3 171.3 45.2 126.1 3.8 13.2 46.0 171.8 43.7 128.1 3.9 13.1 44.9 172.1 42.8 129.3 4.0 13.0

50 59.0 166.4 52.4 114.0 3.2 13.8 55.8 166.9 50.7 116.2 3.3 13.7 54.8 167.2 49.7 117.5 3.4 13.6

7.0

15 25.4 192.1 27.3 164.7 7.0 14.3 21.7 192.7 26.4 166.2 7.3 14.2 20.5 193.0 25.9 167.1 7.5 14.2

25 35.1 186.0 34.6 151.4 5.4 14.7 31.5 186.5 33.5 153.1 5.6 14.7 30.4 186.9 32.8 154.1 5.7 14.6

40 49.6 176.8 45.5 131.3 3.9 15.4 46.2 177.4 44.1 133.3 4.0 15.4 45.1 177.7 43.2 134.5 4.1 15.3

50 59.3 170.7 52.8 117.9 3.2 15.9 56.0 171.2 51.1 120.1 3.4 15.8 54.9 171.6 50.1 121.5 3.4 15.8

8.5

15 25.7 197.2 27.5 169.8 7.2 15.1 21.9 197.9 26.6 171.3 7.4 15.1 20.7 198.2 26.0 172.2 7.6 15.1

25 35.3 190.4 34.8 155.6 5.5 15.5 31.7 191.0 33.7 157.4 5.7 15.5 30.5 191.4 33.0 158.4 5.8 15.5

40 49.8 180.1 45.8 134.4 3.9 16.1 46.3 180.7 44.3 136.4 4.1 16.1 45.2 181.1 43.4 137.7 4.2 16.0

50 59.4 173.3 53.1 120.2 3.3 16.6 56.1 173.9 51.4 122.5 3.4 16.5 55.0 174.2 50.3 123.9 3.5 16.4

30

4.5

15 25.9 201.8 28.6 173.2 7.1 20.6 22.1 202.4 27.7 174.8 7.3 20.5 20.8 202.8 27.1 175.7 7.5 20.5

25 35.7 197.6 35.9 161.7 5.5 21.2 31.9 198.2 34.7 163.5 5.7 21.1 30.7 198.6 34.0 164.6 5.8 21.1

40Operation not recommended

50

7.0

15 26.5 211.3 28.8 182.4 7.3 23.6 22.4 211.9 27.9 184.0 7.6 23.6 21.1 212.3 27.3 185.0 7.8 23.6

25 36.2 205.8 36.2 169.6 5.7 24.1 32.2 206.4 35.0 171.4 5.9 24.0 30.9 206.8 34.3 172.5 6.0 24.0

40Operation not recommended

50

8.5

15 26.8 217.0 29.0 188.0 7.5 24.6 22.6 217.6 28.0 189.6 7.8 24.6 21.3 218.1 27.5 190.6 7.9 24.5

25 36.4 210.7 36.4 174.3 5.8 25.0 32.4 211.3 35.2 176.2 6.0 24.9 31.1 211.7 34.5 177.3 6.1 24.9

40Operation not recommended

50

NOTE: For part load operation, divide capacity by 2. 3/15/13

Page 41: Commercial Reversible Chiller - 50 Hz

41

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

NKW130 Performance Data cont.

CoolingSource Load Flow - 4.5 L/s Load Flow - 7.0 L/s Load Flow - 8.5 L/s

EST°C

FlowL/s

ELT°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

LLT°C

TCkW

PowerkW

HRkW

EERW/W

LST°C

0

4.5

10 2.4 139.3 17.8 157.1 7.8 8.5 5.0 144.9 17.9 162.8 8.1 8.8 5.7 148.2 18.0 166.2 8.2 9.0

20 11.1 163.8 18.8 182.6 8.7 9.9 14.1 170.3 18.9 189.2 9.0 10.3 15.0 174.2 19.0 193.2 9.2 10.5

30 19.8 188.3 19.7 208.0 9.5 11.3 23.2 195.8 19.9 215.6 9.9 11.7 24.3 200.3 19.9 220.2 10.0 11.9

45 32.8 225.0 21.2 246.2 10.6 13.3 36.8 234.0 21.3 255.3 11.0 13.8 38.1 239.4 21.4 260.8 11.2 14.1

7.0

10 2.3 141.7 17.0 158.7 8.4 5.5 4.9 147.4 17.1 164.4 8.6 5.7 5.7 150.8 17.1 167.9 8.8 5.9

20 11.0 166.6 17.8 184.5 9.3 6.4 14.0 173.3 17.9 191.2 9.7 6.7 14.9 177.3 18.0 195.3 9.8 6.8

30 19.6 191.5 18.7 210.2 10.2 7.3 23.1 199.2 18.8 218.0 10.6 7.6 24.2 203.8 18.9 222.6 10.8 7.8

45 32.6 228.9 20.0 248.9 11.5 8.7 36.7 238.0 20.1 258.1 11.8 9.0 38.0 243.5 20.2 263.7 12.1 9.2

8.5

10 2.2 143.2 16.5 159.6 8.7 4.6 4.8 148.9 16.6 165.4 9.0 4.7 5.6 152.3 16.6 168.9 9.2 4.8

20 10.9 168.3 17.3 185.6 9.8 5.3 13.9 175.0 17.4 192.4 10.1 5.5 14.9 179.1 17.4 196.5 10.3 5.6

30 19.5 193.5 18.1 211.5 10.7 6.1 23.0 201.2 18.2 219.4 11.1 6.3 24.1 205.8 18.2 224.1 11.3 6.4

45 32.5 231.2 19.3 250.5 12.0 7.2 36.6 240.5 19.4 259.8 12.4 7.5 37.9 246.0 19.5 265.4 12.6 7.6

10

4.5

10 2.3 142.1 22.6 164.7 6.3 18.9 4.8 147.8 22.7 170.5 6.5 19.2 5.7 151.2 22.8 174.0 6.6 19.4

20 10.9 168.5 24.0 192.5 7.0 20.4 13.9 175.2 24.1 199.3 7.3 20.8 14.9 179.2 24.2 203.5 7.4 21.0

30 19.4 194.8 25.4 220.2 7.7 21.9 22.9 202.6 25.6 228.2 7.9 22.4 24.1 207.3 25.6 232.9 8.1 22.6

45 32.3 234.4 27.5 261.9 8.5 24.2 36.5 243.7 27.7 271.4 8.8 24.7 37.8 249.3 27.8 277.1 9.0 25.0

7.0

10 2.2 144.6 21.5 166.1 6.7 15.8 4.8 150.4 21.6 172.0 7.0 16.0 5.6 153.8 21.7 175.5 7.1 16.1

20 10.7 171.4 22.8 194.2 7.5 16.8 13.8 178.3 22.9 201.2 7.8 17.0 14.8 182.4 23.0 205.3 7.9 17.2

30 19.3 198.2 24.0 222.3 8.2 17.7 22.8 206.1 24.2 230.3 8.5 18.0 23.9 210.9 24.3 235.1 8.7 18.2

45 32.1 238.4 26.0 264.4 9.2 19.2 36.4 247.9 26.1 274.1 9.5 19.5 37.7 253.6 26.2 279.9 9.7 19.8

8.5

10 2.1 146.1 20.8 166.9 7.0 14.8 4.7 151.9 21.0 172.9 7.2 15.0 5.5 155.4 21.0 176.4 7.4 15.1

20 10.6 173.2 22.0 195.2 7.9 15.6 13.7 180.1 22.2 202.2 8.1 15.8 14.7 184.2 22.2 206.5 8.3 15.9

30 19.1 200.2 23.2 223.5 8.6 16.4 22.7 208.2 23.4 231.6 8.9 16.6 23.9 213.0 23.5 236.5 9.1 16.8

45 31.9 240.9 25.0 265.9 9.6 17.6 36.3 250.5 25.2 275.7 10.0 17.9 37.6 256.2 25.3 281.5 10.1 18.1

20

4.5

10 2.8 133.2 27.3 160.5 4.9 28.7 5.2 138.5 27.5 166.0 5.0 29.0 5.9 141.7 27.6 169.3 5.1 29.2

20 11.4 158.1 29.1 187.1 5.4 30.1 14.3 164.4 29.2 193.6 5.6 30.5 15.2 168.1 29.4 197.5 5.7 30.7

30 20.1 182.9 30.8 213.7 5.9 31.6 23.4 190.2 31.0 221.2 6.1 32.0 24.4 194.6 31.1 225.7 6.3 32.2

45 Operation not recommended

7.0

10 2.7 135.1 26.0 161.2 5.2 25.6 5.1 140.5 26.2 166.7 5.4 25.8 5.9 143.8 26.3 170.1 5.5 25.9

20 11.3 160.3 27.6 187.8 5.8 26.5 14.0 171.0 28.0 199.0 6.1 26.9 15.1 170.5 27.9 198.4 6.1 26.9

30 20.0 185.4 29.1 214.5 6.4 27.5 23.0 201.5 29.8 231.3 6.8 28.1 24.3 197.2 29.4 226.6 6.7 27.9

45 Operation not recommended

8.5

10 2.6 136.3 25.2 161.6 5.4 24.6 5.1 141.7 25.4 167.2 5.6 24.8 5.8 145.0 25.5 170.5 5.7 24.9

20 11.2 161.6 26.7 188.3 6.1 25.4 14.1 168.0 26.9 194.9 6.3 25.6 15.1 171.9 27.0 198.9 6.4 25.7

30 19.9 186.8 28.1 215.0 6.6 26.2 23.2 194.3 28.3 222.6 6.9 26.4 24.3 198.8 28.4 227.2 7.0 26.5

45 Operation not recommended

30

4.5

10 3.6 118.5 33.3 151.8 3.6 38.2 5.7 123.2 33.6 156.8 3.7 38.5 6.4 126.1 33.7 159.7 3.7 38.7

20 12.4 140.4 35.3 175.7 4.0 39.5 14.8 149.8 35.8 185.6 4.2 40.1 15.7 149.4 35.7 185.0 4.2 40.0

30 21.2 162.3 37.3 199.5 4.4 40.8 23.9 176.3 38.1 214.5 4.6 41.6 25.0 172.6 37.6 210.3 4.6 41.4

45 Operation not recommended

7.0

10 3.5 120.2 31.7 151.9 3.8 35.3 5.6 125.0 31.9 156.9 3.9 35.5 6.3 127.8 32.1 159.9 4.0 35.6

20 12.3 142.7 33.5 176.2 4.3 36.1 14.7 152.3 34.0 186.3 4.5 36.5 15.6 151.8 33.8 185.6 4.5 36.5

30 21.0 165.2 35.3 200.4 4.7 37.0 23.7 179.5 36.1 215.6 5.0 37.5 25.0 175.7 35.6 211.3 4.9 37.4

45 Operation not recommended

8.5

10 3.4 121.2 30.8 152.0 3.9 34.4 5.6 126.0 31.0 157.0 4.1 34.5 6.3 128.9 31.1 160.0 4.1 34.6

20 12.2 144.0 32.4 176.5 4.4 35.1 14.6 153.7 32.9 186.6 4.7 35.4 15.6 153.2 32.8 186.0 4.7 35.3

30 21.0 166.9 34.1 200.9 4.9 35.8 23.7 181.5 34.8 216.3 5.2 36.2 24.9 177.5 34.4 211.9 5.2 36.1

45 Operation not recommended

45

4.5

10 4.7 98.4 40.5 138.9 2.4 52.5 6.4 102.3 40.8 143.0 2.5 52.8 7.0 104.6 40.9 145.6 2.6 52.9

20 13.5 119.8 42.7 162.5 2.8 53.8 15.5 128.3 43.3 171.6 3.0 54.3 16.3 127.5 43.1 170.6 3.0 54.2

30Operation not recommended

45

7.0

10 4.6 99.7 38.6 138.3 2.6 49.8 6.4 103.7 38.8 142.5 2.7 50.0 7.0 106.1 39.0 145.1 2.7 50.1

20 13.4 121.4 40.6 162.1 3.0 50.6 15.5 130.0 41.2 171.3 3.2 51.0 16.3 129.2 41.0 170.2 3.1 50.9

30Operation not recommended

45

8.5

10 4.5 100.6 37.4 138.0 2.7 49.0 6.4 104.6 37.6 142.2 2.8 49.1 6.9 107.0 37.8 144.8 2.8 49.2

20 13.4 122.4 39.4 161.8 3.1 49.6 15.4 131.1 40.0 171.1 3.3 49.9 16.3 130.2 39.8 170.0 3.3 49.9

30Operation not recommended

45

NOTE: For part load operation, divide capacity by 2. 2/2/12

Page 42: Commercial Reversible Chiller - 50 Hz

42

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Wiring Schematicg

380-420/50/3

SFS

LFS

ES

Johnson FX-10

5VDC

AI3

35

36

37

38

+

-

AI5-

+

AI4-

+

AI6

AI2

AI1

5VDC

5VDC

LED

-

-

-

+

+

+

24VAC

24VAC C

om

GR

OU

ND

39

40

41

PWM2

PWM2 Com

PWM1

42

43

44

45

46

47

48

24VAC Com

DI12

DI11

DI10

DI9

DI8

DI7

49

50

51

52

53

54

55

56

DI 3/4/5/6/ Com

DI6

DI5

DI4

DI3

DI2

DI1

9VDC

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

D09

D08

D07

D06

D05

D04

D03

D02

D01

J8

J2

J10

J9

J7

NOTE 6

A21A12

A25A22

A32

A31A35

A23

A13

A11

A15

A14

A24

A34

A3334

LP-A

LP-B

313029282726252423222120

AI4

EXP

5Vdc

Com

J2

5Vd

c

5Vdc

Com

AI3

EXP

5Vd

c

5Vdc

Com

AI2

EXP

5Vd

c

5Vdc

Com

AI1

EXP

5Vd

c

1716151413121110

DO

324

Vac

DO

4D

O5

DO

6

24 V

ac24

Vac

Com

J3

24 V

ac

J1M

ain

Boa

rd

Con

nect

ion

A41

A31

A23

A13

A43

A42

A32

A33A21A22A12

A11

4321

D02

D01

6

D07

5 8

D08

7

Johnson FX10Expansion Board

Unit Power Supply380-420/50/3

G

( Circuit A )Compressor

CC1

L1L2L3

T1T2T3

Black (10)Red (12)

White (11)

T1 T2

S2

S1

CompressorProtectionModule #1

(CPM1)

Blue

Blue

T1

T2

T3

S1

S2

Current Switch

CS1

Black

Black

Earth Ground

Grn/Yell (88)

CC2

L1L2L3

T1T2T3

Black (13)Red (15)

T1 T2

S2

S1

CompressorProtectionModule #2

(CPM2)

Blue

Blue

( Circuit B )T1

T2

T3

S1

S2

White (14)

Current Switch

CS2

Black

Black

Compressor Earth Ground

Grn/Yell (89)

PB

L1 L2 L3

33

32

31

30

29

28

27

26

25

24

231

6

2

7

3

4

9

5

10

8

White/Red (80)

White/Red (81)

White/Blue (33)White/Blue (34)

Yellow/Red (35)

Yellow/Red (36)

Yellow/Blue (37)

Yellow/Blue (38)

Tan/Black (84)

Tan/Black (85)

White/Red (80)

White/Red (81)T

T

T

T

White/Blue (33)

White/Blue (34)

Yellow/Red (35)

Yellow/Red (36)

TYellow/Blue (37)

Yellow/Blue (38)

Tan/Black (84)

Tan/Black (85)

S-WCTCircuit A

L-WCTCircuit A

S-WCTCircuit B

L-WCTCircuit B

LLT

Green/Yellow (23)

Yellow (21)

Black/White (22)

23

1

PB2

Black (54)

Red (55)

Gray (56)

Pink (58)

Brown (57)

Gray (59)

14

6

7

16

9

8

17

14

5

18

13

4

1

3

12

10

11

2TEST

Brn/Wht (86)

Brn/Wht (87)

TLST

Brn/Blk (41)

Brn/Blk (42)

Blac

kBl

ack

CS-ACircuit A

Blac

kBl

ack

CS-BCircuit B

Blue (45)

Blue (46)

Blue (45)

Blue (46)

Orange (47)

Orange (47)

Gray (48)Connect to R on TB

White (67)

White (67)

White (66)

White (66)

Orange (60)

Orange (60)

Tan/White (82)

Tan/White (83)

Blac

k (A

)Bl

ack

(A)

Whi

te (B

)W

hite

(B)

Orange (61A)

Orange (61A)

RV1

RV2

Orange (60A)

Orange (61A)

Orange/Wht (60B)

Orange/Wht (61B)

TELT

Tan/White (82)

Tan/White (83)

Tan/White (82)

Tan/White (83)

Black (49)

Blue (76A)

Blue (76A)

Blue (76B)

Blue (76B)

Blue (49A)

Blue (76A)

Blue/Wht (49B)

Blue/Wht (76B)

BLACKWIRE HARNESS

Black(1)

White (2)

Red (3)

Black(4)

White (5)

Red (6)

Black(7)White (8)Red (9)

Yellow (17)

Black/White (18)

Yellow (19)

Black/White (20)

NOTE 1NOTE 2

NOTE 4

NOTE 5

NOTE 7

NOTE 8

NOTE 10NOTE 10

543

PhaseGuardMonitor(PGM)

Orange (61B)

Blue400V

Black

Page 43: Commercial Reversible Chiller - 50 Hz

43

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Wiring Schematic cont.g

97P795-04 08/19/10

HP-B

HP-A

PB1

23

1

Black (F1)

Black (F2)

Black (F3)

Black (F4)

Black (F5)

Black (F6)

Black (F7)

Black (F8)

Black (F9)

Black (F10)

Black (F11)

Black (F12)

Black (F13)

Black (F14)

Black (F15)

Black (F16)

Black (F17)

Black (F18)

Black (F19)

Black (F20)

1

2

3

4

5

7

8

9

10

6

11

12

13

16

15

14

17

20

19

18

A

Yellow

Yellow

Yellow

Yellow (24)

Black (95)

Y1 COMP 1

LC1 Comp AAlarm

RS DO-9

X2 DO-7

R 24VAC

SS DO-8

LC2 Comp BAlarm

X1 Acc

C 24VAC COM

TO NOT USED

SC NOT USED

AIC NOT USED

L NOT USED

O/B REV VALVE

G NOT USED

Y2 COMP 2

16

12

8

2

9

4

10

7

5

3

11

14

6

13

15

1

TB

Black (SS)

Black (C)

Black (RS)

Black (R)

Black (X2)

Black (LC2)

Black (LC1)

Black (X1)

Black (Y1)

Black (Y2)

Black (O/B)

Black (G)

Black (AIC)

Black (SC)

Black (L)

Black (TO)

B

Black/White (26)

Black (30)

Black (30)

Black (29)

Black (29)

Yellow (25)

Yellow (25)

Black (28)

Black (28)

Brown (53)

Brown (53)

Brown (52)

Brown (52)

Blue (51)

Blue (51)

Black (75A)

Black/Org (75B)

Black/Org (73B)

Black/Org (74B)

CC-B

CC-A

Black (73A)

Black (74A)

Violet (67)

Violet (66)Black/White (63)

Black/White (62)

Black/White (62)

Blue (45)

Blue (46)

Orange (47)

White (67)

White (66)

Blue (50) Not Used

Orange (60)

Orange (61A)

CPM1M2M1Black (70A)

CPM2M2M1

Black/Org (70B)

Yellow (80)

Black (72A)

Black/Org (72B)

Notes1 - Disconnect for 9.4°C source side freeze detection2 - Disconnect for 9.4°C load side freeze detection3 - Acc output is cycled with the lead compressor.4 - A field installed flow switch is required for the load side and must be connected to PB2-3 for the unit to operate.5 - A field installed flow switch is required for the source side and must be connected to R for the unit to operate.6 - Jumpers must be set as shown for correct control operation. If a communication card is present, it must be removed to check the jumpers.7 - Reversing Valve will be energized for heating mode.8 - Used for Emergency Shutdown in conjunction with a normally open relay9 - M1 and M2 are located on the compressor protection modules (CPM1 and CPM2) inside of the compressor junction Boxes. Only used on 090 and 130 models.10 - Only used on the 090 and 130 models.11 - Replace Blue wire on CC2-L2 with Red wire from transformer to operate unit at 380V.

NOTE 3

NOTE 7

NOTE 9

NOTE 9

Ground

LegendCC – Compressor ContactorCPM – Compressor Protection ModuleCS – Current SwitchELT – Entering Load TempES – Emergency ShutdownEST – Entering Source TempHP – High PressureLFS – Load Flow SwitchLLT – Leaving Load Temp

LP – Low PressureLST – Leaving Source TempL-WCT – Load Water Coil TempPB – Power BlockRV – Reversing ValveSFS – Source Flow SwitchS-WCT – Source Water Coil TempTB – Terminal BoardPGM – Phase Guard Monitor

Factory low voltage wiringFactory line voltage wiringField low voltage wiringField line voltage wiringOptional blockField Supplied Option

Thermistor

Relay coilT

Open Jumper

Closed Jumper

¼” Quick Connector

PGM

8

1

Black/Org (71B)

Black (71A)

24V

Tran

sfor

mer

NOTE 11

Black/White

Yellow

Red380V

380-420/50/3 cont.

Page 44: Commercial Reversible Chiller - 50 Hz

44

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

GeneralThe water-to-water heat pump shall be a single packaged

unit that is certified under the Microgeneration Certification

Scheme (MCS) and evaluated to relevant European

safety directives. The heat pump, as manufactured by

WaterFurnace International, Fort Wayne, Indiana, shall

be designed to operate with source liquid temperatures

between 0°C and 45°C in cooling, and between 0°C and

30°C in heating.

Factory QualityEach unit shall be run tested at the factory using water.

Quality control system shall automatically perform via

computer: triple leak check, pressure tests, evacuate and

accurately charge system, perform detailed heating and

cooling mode tests, and quality cross check all operational

and test conditions to pass/fail criteria. Units tested without

water flow are not acceptable.

Frame and CabinetEach unit shall be pallet mounted. The frame shall be 10

gauge welded steel coated with gloss black polyester

powder coat paint. Paint shall be rated for 1,000 hours of

salt spray using ASTM B117.

Optional Enclosure - Optional painted sheet metal

enclosure shall be factory installed. The optional

acoustical enclosure shall be constructed of heavy

gauge G60 galvanized sheet metal and polyester,

powder coated, gloss white. Paint shall be rated for

1,000 hours of salt spray using ASTM B117. All panels

shall be lined with 12.7 mm thick, 24 kg/m3 density,

acoustic type, glass fiber insulation. All insulation

must meet NFPA 90A. This material shall also provide

acoustical benefit. The unit must have a minimum of

three access panels for serviceability of the compressor

compartment. Units having only one access panel

to compressor/heat exchangers/expansion device/

refrigerant piping shall not be acceptable.

The control box shall have separate holes and knockouts

for entrance of line voltage and low voltage control

wiring. All factory-installed wiring passing through factory

knockouts and openings shall be protected from sheet

metal edges at openings by plastic ferrules.

Refrigerant CircuitAll units shall contain 2 sealed refrigerant circuits, each

containing a hermetic motor scroll compressor,

bidirectional, thermal expansion valve assemblies, reversing

valve, braze plate heat exchangers, factory installed high

and low pressure safety switches, freeze detection, service

ports, and liquid line filter dryers. Compressors shall be

designed for heat pump duty with internal isolation and

mounted on rubber vibration isolators. Compressor motors

shall have internal overload protection. A high density

sound attenuating blanket shall be factory installed around

the compressor to reduce sound. The water to refrigerant

heat exchangers shall be interlaced copper-brazed and

316 stainless steel plate, capable of withstanding 4489

kPa working pressure on the refrigerant side and 3108 kPa

on the water side. The thermal expansion valve assembly

shall provide proper superheat over the liquid temperature

range with minimal “hunting.” The assembly shall operate

bidirectionally without the use of check valves. Externally

mounted pressure controlled water regulating flow valves

are not acceptable.

Piping and ConnectionsThe units shall have one set of water in and water out

connections. The connection shall be a 50.8 mm Victaulic

type grooved mechanical fitting. Grooved couplings shall

meet the requirements of ASTM F-1476. Pipes shall be

carbon steel, A-53B/A-106B. Pipe ends to be grooved in

accordance with standards conforming to ANSI/AWWA

C-606. Coupling shall be cast of ductile iron conforming to

ASTM A-536, Grade 65-45-12 or malleable iron conforming

to ASTM A-47, Grade 32510. Gaskets shall be Grade “E”

EPDM compound conforming to ASTM D-2000 Designation

2CA615A25B24F17Z.

ElectricalControls and safety devices will be factory wired and

mounted within the unit. Controls shall include 24 Volt

activated compressor contactors, 24VAC-75VA transformer

with built in circuit breaker, reversing valve coils, and

anti short-cycle protection. A terminal block with screw

in terminals will be provided for field control wiring.

To prevent short cycling when the safety controls are

activated, the reset relay shall provide a lockout circuit that

requires resetting of low voltage supply or main circuit

breaker. A lockout signal shall be provided to the display

to indicate a lockout situation. Units shall be name-plated

for use with time delay fuses or HACR circuit breakers. Unit

controls shall be 24 Volt and provide heating or cooling as

required by the remote thermostat/sensor. Phase Guard

protection shall be added to each unit to protect the

compressor against loss of phase and reverse rotation.

Phase guard control shall be factory installed.

Microprocessor ControlThe unit shall be controlled using an FX10 microprocessor

which sequences all functions and modes of operations.

The control shall interface with a (Y,B) thermostat,

mechanical or electronic. The control shall have the ability

to communicate with N2 Open, BacNet or LonWorks

Engineering Guide Specifi cationsg g p

Page 45: Commercial Reversible Chiller - 50 Hz

45

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Engineering Guide Specifi cations cont.g g pprotocols with optional communication card. The control

system shall have the following features:

1. Anti-short cycle time delay on compressor operation,

time delay shall be a minimum of 5 minutes

2. Random start on power up mode

3. Low voltage protection

4. High voltage protection

5. Unit shutdown on high or low refrigerant pressures

6. Unit shutdown for freeze detection

7. Source and Load heat exchanger freeze detection

setpoint selectable for water or antifreeze

8. Automatic intelligent reset (Unit will automatically

reset 5 minutes after trip if the fault has cleared. Should

a fault reoccur 3 times sequentially then permanent

lockout will occur.)

9. A 4 x 20 digit backlit LCD to display the following:

a. Entering and leaving water temperatures

b. High pressure, low pressure, low voltage,

high voltage, freeze detection setpoint, and

control status

10. The low pressure shall not be monitored for the first 120

seconds after a compressor start command to prevent

nuisance safety trips

11. Remote fault indication on the thermostat

12. An accessory relay output tied to the lead compressor

selectable for normally open or normally closed

Optional N2 Open, BacNet or LonWorks - Units shall

have all the features listed above and the control board

will be supplied with a interface card of choice. This will

permit all units to be daisy chain connected by a 2-wire

twisted pair shielded cable. The following points must

be available at a central or remote computer location:

• Source leaving water temperature

• Load leaving water temperature

• Emergency shutdown command

• Cooling command

• Heating command

AccessoriesHeavy Duty Mounting Springs

WaterFurnace P/N: IS-325-01 (NKW020-090), IS-750-01 (NKW130)Heavy duty mounting springs shall be available for corner

mounting and 3 dBA noise reduction. Springs shall be field

adjustable and load rated for application.

Flow Proving Switch

WaterFurnace P/N: FPS300A flow proving switch shall be available utilizing high

reliability flow sensing technology.

Adaptors

WaterFurnace P/N: CKV160FPT (50.8 mm FPT Adaptor)*

CKV160FL (50.8 mm Flange Pipe Adaptor)* TKC16S-4 (2 in. [50.8 mm] MPT/50.8 mm Victaulic Hose)* *Includes 4 adaptorsAccessory adaptors shall be available to connect the

Victaulic type fitting to a 50.8 mm IPT and to a 50.8 mm

bolted flange. Accessory adaptors shall also be available to

connect the Victaulic type fitting to a 2 in. [50.8 mm] MPT

through a braided stainless steel flexible hose with a 2758

kPa burst rating and a 50.8 mm pipe union.

Page 46: Commercial Reversible Chiller - 50 Hz

46

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Notes

Page 47: Commercial Reversible Chiller - 50 Hz

47

NKW REVERSIBLE CHILLER SPECIFICATION CATALOG

Revision Guide

Pages: Description: Date: By:

21 Updated NXW140 Refrigerant Charge 10 Apr 2013 DS

24-41 Updated Heating Performance Data 10 Apr 2013 DS

47 Added Revision Guide 10 Apr 2013 DS

Page 48: Commercial Reversible Chiller - 50 Hz

Manufactured by

WaterFurnace International, Inc.

9000 Conservation Way

Fort Wayne, IN 46809

www.waterfurnace.com

SC1052WN 04/13

Certi cate Number NQA ‘00000028’Factory Standard MCS010Product Standard MCS007

Product: Envision NKW

Type: Commercial Reversible Chiller - 50 Hz

Size: 020-130 kW

Document: Specification Catalog

©2013 WaterFurnace International, Inc., 9000 Conservation Way, Fort Wayne, IN 46809-9794. WaterFurnace has a policy of continual product research and development and reserves the right to change design and specifi cations without notice.