Haier 1U25S2SQ1FA Installation Manual page 24

1.
1U25S2SQ1FA 1U25BEFFRA
1U35S2SQ1FA 1U35BEFFRA
1U25S2PJ1FA 1U35S2PJ1FA
1U50S2SR1FA 1U50JEFFRA
1U7 S2SR1FA 1U68REFFRA
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 rst makes working easier.
The connection pipe is specialized for R32.
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
Outdoor unit
Outdoor unit
B
A
21
Half union
Flare nut
Torque wrench
Outdoor unit
Indoor unit
A
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( )
Liquid side6.35mm(1/4")
Liquid/Gas side9.52mm(3/8")
Gas side 12.7mm(1/2")
Gas side 15.88mm(5/8")
1U25S2SQ1FA
1U35S2SQ1FA
B
1U25BEFFRA
1U35BEFFRA
Indoor unit
1U50S2SR1FA
1U7 S2SR1FA
1U50JEFFRA
1U68REFFRA
Amax
1U25S2PJ1FA
1U35S2PJ1FA
Bmax
Fastening torque
18N.m
42 N.m
55N.m
60 N.m
charge
Amax Bmax C D
10 15 5 7
7
10 15 5 10
E
20
20