E-
35
ENGLISH
Electrical Connections (Continued)
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.
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.
Earthing the power cable
High humidity
Average humidity
Low humidity
Electrical
potential of lower than 150V
Perform the earthing work 3.
Note 1)
Perform the earthing work 2 if
possible for your safety.
Note 2)
Electrical
potential of higher than 150V
Power
condition
Installation
place
Must perform the earthing work 3.
Note 1)
(In case of installing circuit breaker)
Tightening Torque (kgf.cm)
M4
12.0~14.7
M5
24.4~29.8
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.
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.
Note 2) Earthing at dry place
The earthing resistance should be lower than 100Ω.
(Even in worst case it should be lower than 250Ω.)
Earth terminal
Distribution Board
When using earthing of
the switchboard
When using the terminal
for earthing only
RD060PHXEA_IM_E_32352A(2).indd 35
2010-07-26 ｿﾀﾈﾄ 2:20:02
