Haier HSU-09HEA03 Installation Manual - page 7
Outdoor unit
5.Purging Method:
Push the air out of the indoor unit
and piping as followes:
(1) Remove the valve cap on 2-way
valve in outdoor unit.
(2) Loosen by 1/2 turn the flare nut of
gas pipe, which is conneted to
3-way valve.
(3) Loosen 2-way valve by 90
o
using
hexagon wrench, and after approx.
10 sec tighten it up. Gas comes out
through flare nut on wide pipe. If no
gas is discharged, tighten flare nut
with specified torque.
(4) Open 2-way and 3-way valves
using specified torque.
(5) Tighten the caps on the valves
with specified torque.
Valve rod
Valve cap
7-9
20-25
Tighten torque N.m
When connecting pipe exceeds 5 meters, 20g refrigerant shall be added per exceeding meter.
Charge according to the following list.
Piping length
Additional amount
5m
7m
No need
40g
10m
100g
for 108 138
3-way valve
2-way valve
6.35mm(1/4")
9.52mm(3/8")
7
6.35mm(1/4")
12.7mm(1/2")
Note: When extending piping, air inside piping shall be removed by using external refrigerant gas,
charge according to the following list.
Brand new outdoor unit is charged 50g more refrigerant than regulated weight. Only for
first installation, this extra 50g can be used to purge airin pipes.
During this procedure, 50g refrigerant will be discharged in piping.(This must be
strictly controlled within 90
o
and 10 sec.)
Max. Length: A=7m
Max.Elevation:B= 5m
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
B
A
C
Outdoor unit
Indoor unit
Oil trap
A
B
CAUTION
In case more than 5 metres
,
oil trap
should be installed every 5~7m.
C
HSU-138HEA03
HSU-108HEA03
HSU-138HEA03-M
HSU-108HEA03-M
HSU-138HEA03-S
HSU-108HEA03-S