ENGLISH-22
C
o
nnecting the cable
C
o
nnecting the p
o
wer terminal
f
Connect the cables to the terminal board using the compressed ring terminal.
f
Connect the rated cables only.
f
Connect using a wrench which is able to apply the rated torque to the screws.
f
If the terminal is loose,
fi
re may occur caused by arc. If the terminal is connected too
fi
rmly, the terminal may be
damaged.
Tightening T
o
rque (kgf.cm)
M4
12~18
M5
20~30
Installing the earth wire
f
Earthing must be done by your installation specialist for your safety.
f
Use the earth wire by referring to the speci
fi
cation of the electric cable for the outdoor unit.
Earthing the p
o
wer cable
f
The standard of earthing may vary according to the rated voltage and installation place of the Air to Water Heat Pump.
f
Earth the power cable according to the following.
Installati
o
n place
P
o
wer c
o
nditi
o
n
High humidity
Average humidity
L
o
w humidity
Electrical potential of lower than 150
V
Perform the earthing work 3.
N
o
te 1)
Perform the earthing work 3 if
possible for your safety.
N
o
te 1)
Electrical potential of higher than 150
V
Must perform the earthing work 3.
N
o
te 1)
(In case of installing circuit breaker)
❋
N
o
te 1) Earthing w
o
rk 3
- Earthing must be done by your installation specialist.
- Check if the earthing resistance is lower than 100
Ω
. When installing a circuit breaker that can cut the electric circuit in
case of a short circuit, the allowable earthing resistance can be 30~500
Ω
.
f
When using the terminal for earthing only
f
When using earthing of the switchboard
Earth
terminal
Distribution
Board
