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Connecting the cable
Connecting the power terminal
f Connect the cables to the terminal board using the compressed ring terminal .
f
f Connect the rated cables only .
f
f Connect using a wrench which is able to apply the rated torque to the screws .
f
f If the terminal is loose, fire may occur caused by arc . If the terminal is connected too firmly, the terminal may be
f
damaged .
Tightening Torque (kgf.cm)
M4
M5
Installing the earth wire
f Earthing must be done by your installation specialist for your safety .
f
f Use the earth wire by referring to the specification of the electric cable for the outdoor unit .
f
Earthing the power cable
f The standard of earthing may vary according to the rated voltage and installation place of the Air to Water Heat Pump .
f
f Earth the power cable according to the following .
f
Installation place
Power condition
Electrical potential of lower than 150 V
Electrical potential of higher than 150 V
❋ ❋ Note 1) Earthing work 3
- Earthing must be done by your installation specialist .
- Check if the earthing resistance is lower than 100Ω . When installing a circuit breaker that can cut the electric circuit in
case of a short circuit, the allowable earthing resistance can be 30~500Ω .
f When using the terminal for earthing only
f
12~18
20~30
High humidity
Earth
terminal
Average humidity
Perform the earthing work 3 .
Must perform the earthing work 3 .
(In case of installing circuit breaker)
f When using earthing of the switchboard
f
ENGLISH-22
Low humidity
Perform the earthing work 3 if
Note 1)
possible for your safety .
Note 1)
Distribution
Board
Note 1)
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