21
1.
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
A
B
Outdoor unit
Indoor unit
Oil trap
To bend a pi
Install the removed flare nuts to the pipes to be connected,then flare the pipes
The values are shown in table 5
pe, 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.
Half union
Flare nut
Torque wrench
CAUTION
Be careful that matters, such as wastes of sand
s,water,
, etc. shall not enter the pipe.
The standard pipe length is Cm. 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
Spanner
Forced fastening without careful centering may
damage the threads and cause a leakage of gas.
Pipe Diameter( ) Fastening torque
Liquid side6.35mm(1/4")
Liquid/Gas side9.52mm(3/8")
Gas side 12.7mm(1/2")
Gas side 15.88mm(5/8")
Connection of pipes
charge
additional refrigerant.
Max.Elevation:
Amax
In case the elevation A is more
than 5m, oil trap shoud be
installed every 5~7
Max. Length:
Bmax
Mi n. Length:
Bmin
In case the pipe length B is
more thanDm, the refrigerant
should be charged, according
to E g/m.
2.
The values of The piping size are shown in table 4
18~20N.m
30~35N.m
35
~45N.m
45~55N.m
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