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Connecting the power terminal
Connect the cables to the terminal board using the compressed ring terminal.
Connect the rated cables only.
Connect using a wrench which is able to apply the rated torque to the screws.
If the terminal is loose, fire may occur caused by arc. If the terminal is connected too firmly, the terminal may be
damaged.
Tightening Torque (kgf.cm)
M4
M5
• For the product that uses the R-32 refrigerant, be cautious not to generate a spark by keeping the following
requirements:
CAUTION
- Do not remove the fuses with power on.
- Do not disconnect the power plug from the wall outlet with power on.
- It is recommended to locate the outlet in a high position. Place the cords so that they are not tangled.
Installing the earth wire
Earthing must be done by your installation specialist for your safety.
Use the earth wire by referring to the specification of the electric cable for the outdoor unit.
Earthing the power cable
The standard of earthing may vary according to the rated voltage and installation place of the Air to Water Heat Pump.
Earth the power cable according to the following.
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.
When using the terminal for earthing only
terminal
12~18
20~30
High humidity
Earth
ENGLISH-25
Average humidity
Perform the earthing work 3.
Must perform the earthing work 3.
(In case of installing circuit breaker)
When using earthing of the switchboard
Distribution
Board
Low humidity
Perform the earthing work 3 if
Note 1)
possible for your safety.
Note 1)
Note 1)
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