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Outdoor unit
1.Connection of pipes
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.
The max vertical distance between the indoor unit and the outdoor unit is 5 m.
Half union
Spanner
Be careful that matters, such as wastes of sands, etc.
shall not enter the pipe.
2.Attaching Drain-Elbow
If the drain-elbow is used, please attach it as
figure. (Note: Only for heat pump unit.)
3.Purging Method:
Push the air out of the indoor unit and piping as followes:
Tighten the caps on the valves with specified torque.
Valve rod
Valve cap
When connecting pipe exceeds 5 meters, 20g(only for 18k）or 60g refrigerant shall be
added per exceeding meter. Charge according to the following list.
Piping length
Additional amount
Indoor unit
A
B
Outdoor unit
Max.Elevation:B=10m
Max. Length:A=20m
Outdoor unit
Flare nut
Torque wrench
Tighten torque N.m
7-9
20-25
for 18k
5m
7m
No need
40g
A
Outdoor unit
B
Indoor unit
10m
Piping length
100g
Additional amount
Outdoor unit
CAUTION
In case more than 5 metres，oil trap
should be installed every 5~7m.
4
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 9.52mm(3/8")
Gas side 12.7mm(1/2")
Gas side 15.88mm(5/8")
for
24k 30k 32k 36k
5m
7m
10m
300g
No need
120g
A
Oil trap
C
Indoor unit
B
18N.m
40N.m
40N.m
50N.m
60N.m
20m
900g
C
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