Installation Of Outdoor Unit; Connection Of Pipes - Haier H2SM-18HC03/R2 Installation Manual

1.Installation of Outdoor Unit

Install according to

2.Connection of pipes

Apply refrigerant oil on half union and flare nut.
To bend a pipe, give the roundness as large as possible not to crush the pipe
Connecting the pipe of gas side first makes working easier.
Half union
Spanner
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 20 g/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.
Outdoor unit
Drawing for the installation of indoor and outdoor units
Flare nut
Torque wrench
Forced fastening without careful
centering may damage the
threads and cause a leakage of gas.
Fastening torque
Pipe Diameter
Liquid side 6.35mm(1/4")
Liquid side 9.52mm(3/8")
Gas side 12.7mm(1/2")
Gas side 15.88mm(5/8")
If wiring is not correct, proper operation can
not be carried out and controller may be
damaged.
Fix the cable with a clamp.
Drain hose
6
18N.m
42 N.m
55N.m
60 N.m