Haier HDU-28CM03 User Manual - Page 25

INSTALLATION MANUAL FOR OUTDOOR UNIT 5 No gas leakage? 6 In case of gas leakage, tighten parts of pipe connection. If leakage stops, then proceed 6 steps. Detach the charge hose from the service port, open 2-way valve and 3-way. Turn the valve rod anticlockwise until hitting lightly. 7 To prevent the gas leakage, turn the service port's cap, the valve rod'd cap for 2-way valve and 3-way's a lottle more than the point where the torque increases suddenly. If it does not stop gas leakage, discharge whole refrigerants from the serice port. After flaring work again and vacuumize, fill up prescribed refrigerant from the gas cylinder. 2-way valve 3-way valve 6 6 For series 24,28 2-way valve Liquid pipe 9.52mm 3-way valve Gas pipe 19.05mm 6 6 For series 36,42 8 After attaching the each caps, check the gas leakage around the caps. CAUTION: If the refrigerant of the air conditioner leaks, it is necessary to make all the refrigerant out, then charge the liquid refrigerant into air conditioner according to the amount marked on the name plate. 2-way valve 3-way valve For series 24,28 7 Valve rod cap 7 Valve rod cap 7 Service port cap 2-way valve 3-way valve For series 36,42 7 Valve rod cap 7 Service port cap If needing to recycle the refrigerant gas when installation or repair , please refer to the following procedures: 1. Cut off the power 2. (After confirming the power is cut off) pull the power cable plug terminals of the low-pressure pressure-switch out. 3. (After confirming the power cable terminals of the low-pressure pressure-switch is cut off) After powering on the unit again and switch to COOLING mode,perform refrigerant gas recycling according to the normal refrigerant gas recycling procedure. 4. After finishing refrigerant gas recycling , cut off the power , then insert the power cable terminals of the low-pressure pressure-switch properly. 5. 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. Select wire sizes and circuit protection from table below. (This table shows 20 m length wires with less than 2% voltage drop.) Item Model Circuit breaker Phase Switch breaker Overcurrent protector (A) rated capacity (A) 36,42 series, 28 series (380-400V,3N~,50Hz) 3 30 20 24,28 series (1PH, 220-230V~, 50Hz) 1 40 26 Power source wire size (minimum) 2.5mm2 4.0mm2 Earth leakage breaker Switch breaker Leak current 30 30mA 40 30mA 24