30mA
INSTALLATION MANUAL FOR OUTDOOR UNIT
24
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
Phase
3
Switch breaker
(A)
Circuit breaker
Overcurrent protector
rated capacity (A)
Power source
wire size
(minimum)
30
20
2.5mm
2
1
40
26
4.0mm
2
36,42 series, 28 series
(380-400V,3N~,50Hz)
24,28 series (1PH,
220-230V~, 50Hz)
Switch
breaker
Earth leakage breaker
Leak
current
30
30mA
40
Liquid pipe 9.52mm
Gas pipe 19.05mm
2-way valve
3-way valve
6
6
For series 36,42
For series 24,28
3-way valve
2-way valve
6
6
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.
3-way valve
2-way valve
7
Valve rod cap
Service port cap
7
For series 36,42
3-way valve
2-way valve
7
Valve rod cap
Valve rod cap
7
Service port cap
7
For series 24,28
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.
Detach the charge hose from the service port, open
2-way valve and 3-way. Turn the valve rod
anticlockwise until hitting lightly.
6
In case of gas leakage, tighten
parts of pipe connection. If
leakage stops, then proceed
steps.
6
No gas leakage?
5
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.
7
8
After attaching the each caps, check the gas leakage
around the caps.
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.
