Haier HBU-14CA03/R1 [32/35] Installation procedures

Air Discharge Method

Discharge the air in the unit and piping as shown in the figure.

(1) Remove bonnet of 2-way valve of outdoor unit.

(2) Loosen the flare nut connected to the thick pipe of 3-way

valve 1-2 turns with spanner.

(3) Loosen valve core of 2-way valve 90 degree with inner

hexagon spanner,and fasten up the 2-way valve appro-

ximate 10 seconds later Gas is discharged through flare,

tighten flare nut on the 3-way valve according to the spec-

ified torque when no gas is discharged any more.

(4) Open 2-way valve and 3-way valve.

(5) Tighten bonnets of the two valves according to the specified

torque.

(6) Check for gas leakage with leakage indicator or soapy water.

If any leakage exists,fasten the 2-way valve and 3-way valve,

then discharge air again using Feron(R22) outside of the system.

Table 2

Specification

Torque

Valve core

Valve bonnet

Tighten Torque N.m

7-9

20-25

The refrigerant shall be injected according to the table below if the connecting pipe is more than

5m long

Length of pipe

Quantity of refrigerant added(g)

5m 7m 10m 15m

N.A 32g 90g 180g

Note:When piping is extended,first discharge airs in the connecting pipe with outside freon R22,

and then discharges the excessive refrigerant using bbove method.

As for newly manufactured air conditioner,additional 60g R22 has already been added based on

the specified refrigerant quantity.This method is only applied to the first installation to blow off air

inside the connection pipe and indoor unit.

2-way valve

3-way valve

Open

Liquid pipe

6.35mm(1/4”)

Flare nut

12.70mm(1/2”)

Installation Procedures