Connection Of Pipes - Haier HSU-18LEK03-Y2 Installation Manual

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 or 60g(only for 22k 24k) refrigerant shall be
added per exceeding meter. Charge according to the following list.
for 5k 7k 9k 10k 12k 13k 18k
Piping length
Additional amount
Indoor unit
A
Outdoor unit
Max.Elevation: for 5K 7K 9K 10K 12K 13K: B=5m
Max. Length:
Outdoor unit
Flare nut
Torque wrench
Tighten torque N.m
7-9
20-25
5m 7m
No need 40g
A
B
Indoor unit
for 18K 22K 24K: B=10m
for 5K 7K 9K 10K: A=7m
for 12K 13K: A=10m
for 18K 22K 24K: A=20m
10m
Piping length
100g
Additional amount
Outdoor unit
Outdoor unit
B
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 22k 24k
5m 7m
No need 120g
A
C
B
18N.m
40N.m
40N.m
50N.m
60N.m
10m
20m
300g
900g
Oil trap
Indoor unit
C