Electrical Wiring (If Using A Belt Driven Fan) - LG PAHCNM000 Owners & Installation Manual

Electrical Wiring (if using a belt driven fan)

• If the supply air/return air fan is driven by a constant speed motor, the motor can be powered
using the main switchboard's magnetic contactor.
• Always install an earth leakage breaker when connecting a constant speed motor.
• Refer to "Technical Standards for Electrical Equipment" for installation standards for earth
leakage breakers.
• Use AC 24 V for the magnetic connector's operation contact. Failure to do so could result in the
malfunctioning of the Control Kit.
Return Exhaust
air air
EOCR
MC(RA)
ELB(RA)
R S T N
Power source for motor
operation, 3-phase
Outdoor
air
EOCR
MC(SA)
ELB(SA)
TR
<Main Power Switchboard>
AHU SENSOR CONNECTION
Supply
air
TR
ELB
MC
EOCR
L
N
<AHU control kit>
25
Circuit breaker
Magnetic
Contactor
Overcurrent
circuit breaker
On-site wiring
DO5 DO6
Main module