Haier AS09/12GS2ERA Service Manual page 80

1.
1U07BS1ERA 1U09BS1ERA
1U12BS1ERA
1U18FS1ERA
1U24GS1ERA
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 makes working easier.
The connection pipe is specialized for R410A.
Half union
Spanner
Be careful that matters, such as wastes of sand s,water, , etc. shall not enter the pipe.
CAUTION
The standard pipe length is C m. If it is over D m, the function of the unit will be affected. If the pipe has
to be lengthened, the refrigerant should be charged, according to E g/m. But the charge of refrigerant
must be conducted by profes sional air conditioner engineer. Before adding additional refrigerant,
perform air purging from the refrigerant pipes and indoor unit using a vacuum pump,then
additional refrigerant.
B
A
Outdoor unit
Outdoor unit
B
A
AS09/12GS2ERA 1U09/12BS1ERA-SM
Flare nut
Torque wrench
Outdoor unit
Indoor unit
A
●
Max.Elevation:
●
In case the elevation A is more
than 5m, oil trap shoud be
installed every 5~7
●
Max. Length:
Oil trap
●
In case the pipe length B is
more thanDm, the refrigerant
Indoor unit
should be charged, according
to E g/m.
Forced fastening without careful centering may
damage the threads and cause a leakage of gas.
Pipe Diameter(ǿ)
Liquid side6.35mm(1/4")
Liquid/Gas side9.52mm(3/8")
Gas side 12.7mm(1/2")
Gas side 15.88mm(5/8")
B
Indoor unit
Amax
Bmax
77
Installation
Fastening torque
18N.m
42 N.m
55N.m
60 N.m
charge
Domestic air conditioner