Connecting The Power Terminal; Installing The Earth Wire - Samsung RD040MHXCA Series Installation Manual

I U
NSTALLING THE
Electrical Connections (Continued)
 When using the terminal for
earthing only
 When using earthing of the
switchboard
Distribution Board
30
E-
FJM RD040MHXCA_IM_00000_E_2.23.10.indd 30
NIT

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.

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 conditioner.
Earth the power cable according to the following.

Installation
Power
condition
Electrical
potential of lower
than 150V
Earth terminal
Electrical
potential of
higher than 150V
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.)
Tightening Torque (kgf.cm(lb.ft))
M4
12.0~14.7(0.86~1.06)
M5
24.4~29.8(1.76~2.15)
place
High humidity Average humidity
Perform the
earthing work 3.
Must perform the earthing work 3.
(In case of installing circuit breaker)
Low humidity
Perform the earthing
work 2 if possible for
Note 1)
Note 2)
your safety.
Note 1)
2010-2-24 19:57:40