Haier AD122ALEAA User Manual - Page 21

Installation Manual For Indoor Unit Vacuum pumping 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 valves Open all the valves on the outdoor unit. Gas leakage detection Check with a leakage detector or soap water that if there is gas leakage at the pipe connections and bonnets. Insulation treatment 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. The notch upward(Attached detail view) Indoor unit Field piping side Subsidiary insulation tube 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. 20