Purging Method - Haier H2SM- - annexe 5 Installation Manual

5-1.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
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.
Tighten torque N.m
Valve rod
Valve cap 20-25
When connecting pipe exceeds 5 meters, 20g refrigerant shall be added
per exceeding meter. Charge according to the following list.
Piping length
Additional amount
Note: When extending piping, air inside piping shall be removed by using external
refrigerant gas, charge according to the following list.
Outdoor unit
o
using
7-9
7m 10m
60g
No need
2-way valve
6.35mm(1/4")
HSU-09HRA03/R2
HSU-12HRA03/R2
HSU-18HRA03/R2
2-way valve
6.35mm(1/4")
HSU-22HRA03/R2
12m
100g
7
3-way valve
9.52mm(3/8")
3-way valve
12.7mm(1/2")