haier AU142AFBIA - Manual (Page 21)

INSTALLATION MANUAL FOR INDOOR UNIT
20
Warning !
During installation, if refrigerant leakage occurs, please immediately take ventilation
measure. If the refrigerant gas meet the fire, it may generate poisonous gas.
After finishing installation work, please make sure there is no refrigerant leakage.
If the leaked refrigerant gas meet heater and oven, etc. fire sources, it may generate
poisonous.
Depenbing on the outdoor unit.For details,please refer to the operation manual attached
with outdoor unit.
Material and dimension of connection pipe
The permitted length and fall of connection pipe
Material of connection pipe and thermal insulation
Foam polyethylene pipe, thickness over 10mm
Stiff PVC pipe VP 20mm (inside diameter) Material of connection pipe
Material of thermal insulation
Perform with two spanners
When performing the connection work of flare nut, connect all
the refrigerant pipe.
When connecting the connection pipe of indoor unit, must
use two spanners to perform.
For the installation torque, please refer the following Table.
Connection of refrigerant pipe
Material of
connection pipe
Gas side
Liquid side
Dimension of
connection pipe
15.88
9.52
Phosphorus oxidized copper seamless pipe
(TP2) for air conditioner
External diameter of
connection pipe (mm) Installation torque (N.m) Add to installation torque (N.m)
9.52 24.5(2.5kgf.m) 29.4(3.0kgf.m)
15.88 78.4(8.0kgf.m) 98.0(10.0kgf.m)
Confirm drainage
Perform test run to insure the condition of drainage, the connection part of the connection
should not leak water. The confirmation must be performed even if install in winter.