30mA
INSTALLATION MANUAL FOR OUTDOOR UNIT
24
(6) Additional charge of refrigerant
5. Electric wiring
Outdoor unit is precharged at a factory for the piping length up to 5m. Additional charge is not required
up to 5m.
Notes (i) Basic refrigerant charge amount means refrigerant amount when refrigerant piping length is 5m.
(ii) When the refrigerant piping length exceeds the length that additional refrigerant charge is not
required, charge additional refrigerant based on to the calculated amount of refrigerant per unit
piping length.
Example of additional charge amount calculation
Calculate the additional charge amount when the piping length is 25 m.
Additional charge amount of refrigerant =0.70kg(Calculate the amount in any case.)
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.)
(25 - 5 ) x 0.06 = 1.2
Additional charge amount (kg)
Additional charge amount per 1m (kg/m)
Length that additional refrigerant charge is not required (m)
Total length of the piping (one way) (m)
Heat
pump
Length that
additional
charge is not
required
Maximum
piping
length
Additional
charge
amount
(ii)
per meter
Basic
refrigerant
charge
amount
(i)
Factory charge amount
of refrigerant
Outdoor unit
Indoor unit
Item
Model
3.44
3.52
0
0.06
5m
50m
(v)
(viii)
2.32
2.40
0
0.06
5m
(vii)
(viii)
30m
36,42 series
24,28 series
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)
24,28,36 series (1PH,
220-230V~, 50Hz)
Switch
breaker
Earth leakage breaker
Leak
current
30
30mA
40
