42GW

C

42GWCHydronic Cassette Fan Coil Units

Carrier makes the world a better place to live

by creating a comfortable, productive and

healthy environment regardless of climate.

It is our mission is to be customer’s first choice

for air conditioning, heating and refrigeration

solutions everywhere around the world.

Technical Parameter

Operating Limits

Water Pressure Drop

Dimensions

Performance Data

Wiring DiagramGreat Hall of the People, Beijing, China

Kremlin, Moscow, Russia

White House, Washington, USA

Imperial Palace, Tokyo, Japan

4

4

4

5

6

9

01

Model number Nomenclature

Air Volume

660～1750m3/h

4 2 G W C 0 1 0 0 2 0 0 1 T H C

Manufacturer Code

Product Design Version

Unit Packing Method

Optional Equipment

Power Supply

Unit Size

Type

Product Series

No.1, 2

Product Series

42: Fan Coil Unit

No.3, 4, 5

Type

GWC : Hydronic Cassette fan Coil Units

No.6, 7, 8

Unit Size (Cooling Capacity KW / Hr)

003: 2.4 KW / Hr

004: 4.0 KW / Hr

005: 4.7KW / Hr

006: 5.9 KW / Hr

008: 8.3 KW / Hr

010: 11.0 KW / Hr

No.9, 10

Power Supply

02 : 220V - 1PH - 50HZ

No.11

Optional Equipment

A : Standard Units

B: Units Includes valve Package

No.12

Unit Packing Method

0 : Standard Packing

No.13

Product Design Version

3: Third Design Revision

No.14, 15, 16

Manufacturer Code

THC : Shanghai Tonghui Carrier

Features

02

Motor and Fan

Optimized designed centrifugal fan design for 42GWC

High efficiency

Quite running with anti-vibration pads of motor

Coil

Optimized designed 7 mm coil.

“L” coil design

Lanced fin design

Air return grille and filter

The filter inside the air return grille can be easily removed and washed, And keeps the room air fresh

through constant circulation.

The front panel and frill of the unit are designed with stylish appearance makes it suitable to match various

room decorations.

It is a compact unit only 298mm in height. The four suspension brackets of the unit adopt the T shape

opening, it can be installed up and fixed easily.

Four-way air distribution gives individual comfort while for localized control each diffuser may be adjusted or

even shut down completely.

The unique design of centrifugal fan ensures the quiet running of the unit. This thoroughly eliminates the

bothering throttle noise inside the room.

High-performance condensate drain pump encased in a special sound-insulating material removes

condensate quietly and fast.

Return air enters the cassette unit through a large grille, cleaned by an easily removable, washable filter,

and then keep the room air fresh through constant circulation.

The Special design of the diffuser ensures rapid blending of the supply and room air. Conditioned air is

directed along the ceiling then evenly distributed throughout the room.

A Large LCD screen thermostat is optioned.

03

Condensate drain pump

High performance condensate drain pump inbuilt the unit, and

enwrapped with special designed insulation material.

Drain out the condensate water quietly.

Keeps running when the unit standby.

To avoid the leakage of the condensate water, it’s recommended to

install the two- way valve or three-way valve in the water system.

Options

Thermostat

Three-way Electriccontrol valve

Two-way Electriccontrol valve

Technical Parameter

04

Operating Limits

Water Pressure Drop

m3/h

L/S

Model

Water Circuit

Water connections and Valve not induded Valve assembly Kit

Water Circuit Water Circuit

Maximum water-side pressure

Minimum entering water temperature

Maximum entering water temperature

If the room temperature can go down to 0°C, if is advisable to empty the water circuit to avoid damage caused by ice.

Maximum temperature

Maximum temperature

Nominal single-phase vohage

Operating voltage limits

NominalAir Volume

Cooling Caparity

Heating Capacity

Power Input

Noise

Water Flow

Water Drop

Coil Rows

Connection Diameter

Dimensions, girlle

Dimensions, unit

Weight, grille

Weight, unit

H

M

L

Note: Cooling Conditions: 27°C DB/19°C WB entering air temperature, 7°C entering water and 5°C temperature rise.

Heating Conditions: 20°C entering air temperature, 50°C entering water temperature, the same water flow as the cooling conditions.

Dimensions

05

42GWC003-004-005

42GWC006-008-010

Drainage Connection

Performance Data

06

ModelMed Low

Capacity Multiplier vs Speed

T.H S.H T.H S.H

Model

Entering Air Temperature

T.H S.H T.H S.H T.H S.H T.H S.H T.H S.H T.H S.H T.H S.H

Waterin

Temp

WatertempRise

Cooling Capacity

Performance Data

07

ModelMed Low

Capacity Multiplier vs Speed

T.H S.H T.H S.H

Entering Air Temperature

Model

T.H S.H T.H S.H T.H S.H T.H S.H T.H S.H T.H S.H T.H S.H

Waterin

Temp

WatertempRise

Cooling Capacity

08

Performance Data

Heating Capacity

Available TempDifference

Water Flow

Available temperature difference = hot water entering - entering air DB temperator

Maximum operating water temperature 80℃, maximum operating pressure 1.4mpA

Wiring diagram

09

2-Wire Valve

3-Wire Valve

Wiring diagram legend

Cables colorA BrownB BlueC BlackG GreyE RedW WhiteY-G Yellow/Green

ConnectionsL Line phaseN Neutral

Warning：Any warranty is declined in case of field changes of factory wiring and settings

Note：The connection sequence does not represent the physical lay-out.

① Low speed② Medium speed③ High speed④ Water valve input⑤ Neutral line⑥ Water valve output (ON)⑦ Water valve output (OFF)⑧ Water valve com line

Factory wiringField wiring Connector Terminal on terminals Normally closed contact Normally open contact CapacitorFC Fan capacitorFS Safety switch floatIFM Fan motor indoor unitPS Drain pumpEV Electric valve （cooling）PCB Relay boardHTR Electric heaterTB Terminal board

T-42GWC-0804-01(E)