haier AD142ALEAA - Manual (Page 21)

20
Installation Manual For Indoor Unit
The notch upward(Attached detail view)
Indoor unit
Subsidiary insulation tube
Field piping side
Electric wiring
WARNING
DANGER OF BODILY INJURY OR DEATH
TURN OFF ELECTRIC POWER AT CIRCUIT BREAKER OR POWER SOURCE BEFORE
MAKING ANY ELECTRIC CONNECTIONS. GROUND CONNECTIONS MUST BE
COMPLETED BEFORE MAKING LINE VOLTAGE CONNECTIONS.
(1) Selection of size of power supply and interconnecting wires.
Precautions for Electric wiring
Electric wiring work should be conducted only by authorized personnel.
Do not connect more than three wires to the terminal block. Always use round type crimped terminal
lugs with insulated grip on the ends of the wires.
Use copper conductor only.
Vacuum pumping
Open all valves
Gas leakage detection
Insulation treatment
With a vacuum pump,create vacuum from the stop valve of the outdoor unit.
Emptying with refrigerant sealed in the outdoor unit is absolutely forbidden.
Open all the valves on the outdoor unit.
Check with a leakage detector or soap water that if there is gas leakage at the pipe
connections and bonnets.
Conduct insulation treatment on both the gas side and liquid side of pipes respectively.
During cooling operation,both the liquid and gas sides are cold and thus shall be insulated
so as to avoid dew generation.
The insulating material at gas side shall be resistant to a temperature above 120 C
The indoor unit pipe connection part shall be insulated.