Haier HSU-09HS03/R2DB Service Manual page 62

1 Installation of Outdoor Unit
Install according to
Drawing for the installation of indoor and outdoor units
2 Connection of Pipes
To bend a pipe, give the roundness as large as possible not to crush the pipe, and the bending radius
should be 30 to 40 mm or longer.
Connecting the pipe of gas side first make working easier.
The connection pipe is specialized for R410A.
The max length of connection pipe of 12 series is 15m and the max length of 07,09 series is 7m.
The max vertical distance between the indoor unit and the outdoor unit is 5m
Half union
Spanner
Torque wrench
Be careful that matters, such as wastes of sands, etc. shall not enter the pipe.
The standard pipe length is 5m, If it is over 5m, the function of the unit will be affected.
If the pipe has to be lengthened, the refrigerant should be charged, according to 20g/m.
But the charge of refrigerant must be conducted by professional air conditioner engineer.
Before adding additional refrigerant, perform air purging from the refrigerant pipes and indoor
unit using a vacuum pump, then charge additional refrigerant.
3 Connection
Use the same method on indoor unit. Loosen
the screws on terminal block and insert the
plugs fully into terminal block, then tighten the
screws
Insert the cable according to terminal number
in the same manner as the indoor unit.
4 Attaching Drain-Elbow
If the drain-elbow is used, please attach it as
figure.
Note: Only for heat pump unit.
Domestic Air Conditioner
Outdoor Unit
Flare nut
If wiring is not correct, proper operation can
not be carried out and controller may be
damaged.
Fix the cable with a clamp.
62
HSU-12HS03/R2(DB)
Model:
HSU-09HS03/R2(DB)
Forced fastening without careful
centering may damage the
threads and cause a leakage of
gas.
Pipe Diameter( )
Fastening Torque
Liquid Side 6.35mm(1/4") 18N.m
Gas Side 6.35mm(3/8") 42N.m
Gas Side 12.7mm(1/2") 55N.m
Drain hose