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3

Line Set Isolation

The following illustrations demonstrate procedures which ensure 
proper refrigerant line set isolation. 

Installing Horizontal Runs

This shows how to install line sets on horizontal runs.

NOTE: To hang line set from joist or rafter, use either metal 
strapping material or anchored heavy nylon wire ties.

Transition from Horizontal to Vertical

This shows how to make a transition from horizontal to vertical.

Installing Vertical Runs (new construction shown)

This shows how to install line sets on vertical runs.

NOTE: Similar installation practices should be used if line set is 
to be installed on exterior of outside wall.

IMPORTANT: Refrigerant lines must not contact structure.

Electrical Requirements

NOTE: All wiring must be suitable for outdoor use. Use copper 
conductors only.

A. Floor joist or roof 

rafter

B. Strapping material 

(around vapor line 
only)

C. Wire tie (around 

vapor line only)

D. Tape or wire 

tie

E. Metal sleeve

F. Tape or wire 

tie

G. Strap the vapor line 

to the floor joist or 
roof rafter at 8" 
intervals, then strap 
the liquid line to the 
vapor line.

A. Anchored heavy 

nylon wire tie

B. Strap liquid line 

to vapor line.

C. Liquid line
D. Vapor line—

wrapped in 
armaflex

E. Metal sleeve

F. Wall stud

G. Automotive muffler-

type hanger

B

C

D

E

F

A

G

8’

8’

A

F

E

D

C

B

G

F

E

D

C

B

A. Outside wall
B. Refrigerant lines must 

not contact wall.

C. Vapor line wrapped in 

armaflex

D. Liquid line

E. Wire tie

F. Inside wall

G. Strap
H. Sleeve

I. Wood block 

between studs

J. Caulk

K. Fiberglass 

insulation

L. PVC pipe

A

B

C

D

E

F

G
H
E

I

E
G

H

C

A

E

J

K

L

WARNING

Rating Plate Ampacity

Less than 15

16 - 20

21 - 30

AWG

14

12

10

8

31 - 50

Electrical Shock Hazard

Electrically ground condensing unit or heat pump.

Connect ground wire to ground lug.

Use copper wire for supply connection.

Correct wire gauge is shown in the chart below.

Failure to follow these instructions can result in 
death or electrical shock.

Summary of Contents for W2GH3

Page 1: ... you don t immediately You can be killed or seriously injured if you don t follow All safety messages will tell you what the potential hazard is tell you how to reduce the chance of injury and tell you what can happen if the instructions are not followed Your safety and the safety of others are very important We have provided many important safety messages in this manual and on your appliance Alwa...

Page 2: ...installed in the indoor coil Instructions for replacing the expansion device are provided with the indoor coil LocationRequirements This heat pump is designed to be located outdoors with sufficient clearance for free entrance to the inlet and discharge air openings The location must also allow for adequate service access See Minimum Clearances Where possible select a location for the heat pump whi...

Page 3: ...round vapor line only C Wire tie around vapor line only D Tape or wire tie E Metal sleeve F Tape or wire tie G Strap the vapor line to the floor joist or roof rafter at 8 intervals then strap the liquid line to the vapor line A Anchored heavy nylon wire tie B Strap liquid line to vapor line C Liquid line D Vapor line wrapped in armaflex E Metal sleeve F Wall stud G Automotive muffler type hanger B...

Page 4: ...ready to be completed 1 Route the suction and liquid lines from the fittings on the indoor coil to the fittings on the heat pump Run the lines in as direct a path as possible avoiding unnecessary turns and bends 2 For product efficiency be sure that the suction line is insulated over the entire exposed length and that both suction and liquid lines are not in direct contact with floors walls ductwo...

Page 5: ...re to be supplied by the installer Refer to the rating plate for the maximum over current protection minimum circuit ampacity and operating voltage See wiring diagrams later in this section Install an adequately sized branch circuit disconnect per the NEC within sight of and readily accessible from heat pump The cable or conduit and fittings connected from the disconnect to the heat pump shall be ...

Page 6: ... ground wire C 208 230 volt field supply wires WARNING Electrical Shock Hazard Disconnect power before servicing Replace all parts and panels before operating Failure to do so can result in death or electrical shock T1 T2 L1 L2 L1 L2 C A B A Do not connect C common connection between indoor unit and thermostat except when required by the indoor thermostat Refer to the thermostat installation instr...

Page 7: ...s necessary to maintain system performance The defrost control is time temperature initiated and temperature terminated with a maximum defrost time time out of 10 minutes The time between defrost cycles is preset at 60 minute intervals at the factory but can be field adjusted between 30 60 or 90 minutes To adjust the time period between defrost cycles see Adjust Time Between Defrost Cycles The def...

Page 8: ...he test pins When the jumper is placed across the Test pins for 2 seconds the control will enter the defrost mode If the jumper is removed before an additional 5 second period has elapsed 7 seconds total the unit will remain in defrost mode until the defrost thermostat opens or 14 minutes have passed If the jumper is not removed until after the additional 5 second period has elapsed the defrost wi...

Page 9: ...eaves and other large obstructions should be carefully removed from the heat pump surfaces without damaging the fin surface of the coil Routinely clean or change the indoor air filter Should the indoor coil become dirty thus restricting airflow call a qualified service person to carefully clean the coil surface An annual inspection by a qualified person should be performed to ensure continued qual...

Page 10: ...10 Notes ...

Page 11: ...11 ...

Page 12: ..._____________________ Address ________________________________________________________ Phone number__________________________________________________ Model number __________________________________________________ Serial number __________________________________________________ Installation date ________________________________________________ 48348M005 2005 All rights reserved Registered Trademar...

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