Outdoor Unit; Connection Of Pipes - Haier HSU-12LEK03-Y2 Service Manual

Outdoor unit

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.
Tighten torque N.m
Valve rod
Valve cap 20-25
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.
Additional Gas 50gms is charged inside ODU for purging during installation.
Piping length
5m
Additional amount No need
Indoor unit
A
B
Outdoor unit
Max.Elevation: for
for
Max. Length: for
for
12k,
for
HSU-12LEK03-Y2
Flare nut
Torque wrench
7-9
18k
10m Piping length
7m
40g 100g
Additional amount
A
Outdoor unit
B
Indoor unit
18k
: B=5m
: B=10m
18k
12k
: A=7m
: A=10m
18k
: A=20m
18k
41
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")
18N.m
Liquid side 9.52mm(3/8")
40N.m
Gas side 9.52mm(3/8")
40N.m
Gas side 12.7mm(1/2")
50N.m
Gas side 15.88mm(5/8")
60N.m
18k
5m 7m 10m
120g
No need
Outdoor unit
A
Oil trap
C
Indoor unit
B
CAUTION
In case more than 5 metres oil trap
should be installed every 5~7m.
Installations
20m
300g
900g
C
Domestic air conditioner