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NKW 020 to 130 kWCommercial 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
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
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
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)
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.
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)
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.
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
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
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.
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.
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.
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
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
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
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
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
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)
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]
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.
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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.
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
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.
46
NKW REVERSIBLE CHILLER SPECIFICATION CATALOG
Notes
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
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.
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