Haier HSU-09LV03 [18/34] Installation

6.Purging Method:To use vacuum pump

3-way valve

2-way valve

6.35mm(1/4")

12.7mm(1/2")

HSU-18LV03

HSU-12LV03

HSU-09LV03

HSU-22LV03

HSU-12HV03

HSU-09HV03

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

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

When connecting pipe exceeds 5 meters, 16g refrigerant shall be added

32g

During this procedure, 50g or 80g(only for 22k and 24k unit) refrigerant will be discharged in piping.

(This must be strictly controlled within 90

o

Brand new outdoor unit is charged 50g or 80g(only for 22k unit) more refrigerant than regulated weight.

Only for first installation, this extra 50g or 80g(only for 22k unit) can be used to purge air in pipes.

Note: When extending piping, air inside piping shall be removed by using external

refrigerant gas, charge according to the following list.