Nortek GFU18USV4DH Service-Handbuch

Nortek Global HVAC, LLC

Installation Instructions / Owner's Manual

Heat Pump

ƽPlease read this owner’s manual carefully before operation and retain it for future reference

ƽSpecifications & illustrations subject to change without notice or incurring obligations

ƽIf you have lost the owner’s manual, please visit www.NortekHVAC.com for electronic

version

Indoor Unit

Outdoor Unit

GFU18(5.3)USV4DH GXH18(5.3)USV4DH

GFU24(7.0)USV4DH

GFU30(8.8)USV4DH

GXH24(7.0)USV4DH

GXH30(8.8)USV4DH

GFU36(10.6)USV4DH GXH36(10.6)USV4DH

GFU42(12.3)USV4DH

GFU48(14.1)USV4DH

GXH42(12.3)USV4DH

GXH48(14.1)USV4DH

DC Inverter U-match Series

Floor Ceiling Type Unit



Contents



1 Safety Precautions ····················································································· 1

2 Outline of the Unit and Main Parts ····························································· 1

3 Pre-Installation Check List ········································································· 2

3.1 Standard Accessory Parts············································································· 2

3.2 Installation Location Selection ······································································· 4

3.3 Pipe Connection Requirement······································································· 5

3.4 Electrical Requirement ·················································································· 6

4 Unit Installation

····················································································································7

4.1 Indoor Unit Installation

··············································································································7

4.2 Outdoor Unit Installation

······································································································· 11

4.3 Connection Pipe Installation

······························································································· 12

4.4 Vacuum and Gas Leakage Inspection

··········································································· 16

4.5 Drain Pipe Installation

············································································································ 18

4.6 Electrical Wiring

························································································································ 20

5 Installation of Controllers

·······························································································25

6 Testing

···································································································································25

6.1 Trial Operation and Testing

································································································· 25

6. 2 Working Temperature Range

···························································································· 27

7 Troubleshooting and Maintenance

············································································27

7.1 Troubleshooting

························································································································ 27

7.2 Routine Maintenance

············································································································· 29

DC Inverter U-match Series Floor Ceiling Type Unit

1 Safety Precautions

WARNING NOTICE: Failure to comply with warning notice could result in

property damage, serious personal injury or death.

CAUTION NOTICE: Failure to comply with caution notice could result in

property damage or personal injury.

NOTICE: Failure to comply with notice could result in property damage.

(1).

Instructions for installation and use of this product are provided by the manufacturer.

(2).

Installation must be performed by authorized personnel only.

(3).

Please follow installation instructions as outlined in this manual.

(4).

Connect the indoor unit and outdoor unit with the room air conditioner piping and cord

supplied.

This installation manual describes the correct connections using the supplied parts.

(5).

Installation work must be performed in accordance with national wiring standards by authorized

personnel only.

(6).

If refrigerant leak occurs during installation, ventilate the area immediately

. If the refrigerant

comes in contact with a flame, it produces toxic gas.

(7).

Do not connect power supply until all installation work is complete.

(8). During installation, make sure that the refrigerant pipe is securely attached before you run the

compressor.

zDo not operate the compressor with 2-way or 3-way valve open.

zThis may cause abnormal pressure in the refrigeration cycle that leads to

compressor

damage or personal injury.

(9).

During the pump-down operation, make sure that the compressor is

turned off before you

remove the refrigerant piping.

zDo not remove the connection pipe while the compressor is in operation.

zThis may cause abnormal pressure in the refrigerant cycle that leads

compressor damage

or personal injury.

(10).

When installing the air

conditioner do not mix gases other than the specified refrigerant

(R410A) to enter the refrigerant cycle.

If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to an

abnormally high value and cause compressor damage or personal injury.

(11).

This appliance is not intended for use by persons (including children) with reduced physical,

sensory or mental capabilities, or lack of experience and knowledge.

(12).

Children should be supervised to ensure that they do not play with the appliance.

(13).

If the supply cord is damaged, it must be replaced with an appropriately sized cord.

2 Main Parts

DC Inverter U-match Series Floor Ceiling Type Unit

Fig. 2.1

Installer must properly connect refrigeration

pipe, drain pipe, power cord, and ductwork.

3 Pre-Installation Check List

DC Inverter U-match Series Floor Ceiling Type Unit

3.1 Standard Accessory Parts

The standard accessory parts listed below are furnished and should be used as

described.

Table 3.1

Indoor Unit Accessories

No.

Name Appearance

Q'ty

Usage

Nut with Washer

secure

the hook on the

cabinet of the unit

Wireless Con

troller +

Battery

1+2

To control the indoor unit

Insulation

To insulate the gas pipe

Insulation

To insulate the liquid pipe

Fastener

To fasten the sponge

Nut

To connect gas pipe

Nut

To connect liquid pipe

Table 3.2

Outdoor Unit Accessories

No.

Name Appearance

Q'ty

Usage

Drain Plug

or 3

To plug the unused drain

hole

Drainage Connecter

To connect with the hard

PVC drain pipe

DC Inverter U-match Series Floor Ceiling Type Unit

3.2 Installation Location Selection

ķ. Check the support structure to verify that it has sufficient load-

carrying capacity to support the

weight of the unit and it can be securely mounted.

ĸ. Do not install where there is a danger of combustible gas leakage.

Ĺ. Do not install the unit near heat source, steam, or flammable gas.

ĺ. Children must not operate the unit.

Decide the installation location with the customer as follows:

3.2.1 Indoor Unit

(1). Check the support structure to verify that it has sufficient load-carrying

capacity to support the weight of the unit.

(2). The air inlet and outlet of the unit should never be blocked so that the

airflow can reach every corner of the room.

(3). Leave service space around the unit as required in Fig. 3.1.

ƹFloor type

ƹCeiling type

Fig. 3.1

(4). Install the unit where the drain pipe can be easily installed.

(5). The more space that is open above the unit, the easier it will be to service.

DC Inverter U-match Series Floor Ceiling Type Unit

3.2.2 Outdoor Unit

. Install the unit where it will not be tilted by more than 5°.

. The outdoor unit should be securely mounted to withstand high wind.

If possible, do not install the unit where it will be exposed to direct sunlight. (If

necessary, install a blind that does not interfere with the air flow.)

(1). Install the outdoor unit in a place where it will be free from dirt or rain as

much as possible.

(2). Install the outdoor unit where it is convenient to connect with the indoor

unit.

(3). Install the outdoor unit where the condensate water can be drained out

freely during heating operation.

(4). Do not place animals and plants in the path of the warm air.

(5). Select a location where sound and vibration will have little or no impact.

(6). Check the support structure to verify that it has sufficient load-carrying

capacity to support the weight of the unit. Mount the unit securely to reduce

vibration noise.

(7). Provide the space shown in Fig. 3.2, so that the air flow is not blocked. Also

for efficient operation, leave three of four directions of peripheral

constructions open.

Fig. 3.2

3.3 Pipe Connection Requirement

The maximum length of the connection pipe is listed in the Table below. Do not place

the units

where the distance exceeds the maximum length of the connection pipe.

DC Inverter U-match Series Floor Ceiling Type Unit

Table 3.3

Item

Model

Size of Fitting Pipe

mm (inch)

Max.

Pipe

Length

m (feet)

Max. Height

Difference

between Indoor

Unit and Outdoor

Unit

m (feet)

Drainage

pipe(Out

Diameter × wall

thickness)

mm (inch)

Liquid

Gas

GFU18(5.3)USV4DH

GXH18(5.3)USV4DH

6(1/4)

12.7(1/2)

50(164)

15(49) Φ17X1.75

(Φ5/8 X 1/16)

GFU24(7.0)USV4DH

GXH24(7.0)USV4DH

9.5(3/8)

16(5/8)

50(164)

15(49) Φ17X1.75

(Φ5/8 X 1/16)

GFU30(8.8)USV4DH

GXH30(8.8)USV4DH

9.5(3/8)

16(5/8)

50(164)

15(49) Φ17X1.75

(Φ5/8 X 1/16)

GFU36(10.6)USV4DH

GXH36(10.6)USV4DH

9.5(3/8)

16(5/8)

50(164)

15(49) Φ17X1.75

(Φ5/8 X 1/16)

GFU42(12.3)USV4DH

GXH42(12.3)USV4DH

9.5(3/8)

16(5/8)

50(164)

15(49) Φ17X1.75

(Φ5/8 X 1/16)

GFU48(14.1)USV4DH

GXH48(14.1)USV4DH

9.5(3/8)

16(5/8)

70(230)

15(49) Φ17X1.75

(Φ5/8 X 1/16)

Notes:

ķ.The connecting pipe should be thermally insulated.

ĸ.The pipe wall thickness shall be 0.5~1.0mm (0.02~0.04inch) and the pipe

wall shall be able to withstand the pressure of 6.0MPa (870psig). The

shorter the connecting pipe, the better the cooling and heating effect.

3.4 Electrical Requirement

Electric Wire Size and Fuse Capacity.

Table 3.4

Indoor Units

Power Supply

Fuse

Capacity

Minimum Circuit

Ampacity

Maximum

Over

current

Protection

V/Ph/Hz

GFU18(5.3)USV4DH

208/230V ~ 60Hz

GFU24(7.0)USV4DH

208/230V ~ 60Hz

GFU30(8.8)USV4DH

208/230V ~ 60Hz

GFU36(10.6)USV4DH

208/230V ~ 60Hz

GFU42(12.3)USV4DH

208/230V ~ 60Hz

GFU48(14.1)USV4DH

208/230V ~ 60Hz

DC Inverter U-match Series Floor Ceiling Type Unit

Table 3.5

Outdoor Units

Power Supply

Fuse

Capacity

Minimum Circuit

Ampacity

Maximum

Overcurrent

Protection

V/Ph/Hz

GXH18(5.3)USV4DH

208/230V ~ 60Hz

GXH24(7.0)USV4DH

208/230V ~ 60Hz

GXH30(8.8)USV4DH

208/230V ~ 60Hz

GXH36(10.6)USV4DH

208/230V ~ 60Hz

GXH42(12.3)USV4DH

208/230V ~ 60Hz

GXH48(14.1)USV4DH

208/230V ~ 60Hz

Notes:

ķ.The fuse is located on the main board.

ĸ.Install the disconnect device with a contact gap of at least 3mm (1/8inch) in

all poles nearby the units (Both indoor unit and outdoor unit).The appliance

must be positioned so that the plug is accessible.

Ĺ.Use 2 pieces of power cord of 0.75mm2(AWG18) as the communication

lines between indoor and outdoor unit, with their longest lengths of 50m

(164feet). Please select the appropriate line length per the actual

installation conditions. The communication lines can not be twisted together.

For the unit ( İ30k), it’s recommended to use 8m (26feet) long

communication line.

ĺ.Take 2 pieces of power cord of 0.75mm2(AWG18) as the communication

lines between the wired controller and the indoor unit, with their longest

lengths of 30m (98feet). Please select the appropriate line length per the

actual installation conditions. The communication lines can not be twisted

together. It’s recommended to use 8m (26feet) long communication line.

Ļ.The wire size of the communication line should be no less than 0.75mm2

(AWG18). It’s recommended to take 0.75mm2(AWG18) power cords as the

communication line.

4 Unit Installation

4.1 Indoor Unit Installation

4.1.1 Indoor unit dimension

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