Connection For Fan Signal - LG PAHCMR000 Installation Manual

AHU COMMUNICATIONS KIT INSTALLATION

Connection for Fan Signal

AHU Communications Kit to Air Handler Unit Connection (Fan Motor Control)
AHU Communications Kit Hi/Med/Low wires should
not be connected directly to the AHU fan motor�
Improper connections could result in fire, electric
shock, physical injury or death�
• AHU manufacturer-supplied relays must be used
to connect the LG AHU Communications Kit to the
AHU fan motor.
• MCC panel means motor control panel.
• AHU Communications Kit Hi/Med/Low
wires should not be connected directly
to the AHU fan motor� Improper connec-
tions could result in product damage�
• If the third-party AHU fan motor is the On/Off
type, the HI/MED/LOW wires from the motor
control panel to the AHU have to connect as
one common wire� Example: If just the Hi wire is
connected, the fan motor will not operate using
the LG AHU Communications Kit control logic�
18
Figure 9: AHU Communications Kit to AHU Connection (For Fan Signal).
L1 L2
Motor Input Power
1Ø, 208/230 V ~ 60 Hz
Due to our policy of continuous product innovation, some specifications may change without notification.
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Air Handler Unit
M
R-HI R-MED R-LOW
Motor Control (MCC) Panel
Motor
M
Relay
Field Wiring
Factory Wiring
AHU Communication Kit
L
DO1 DO2 DO3
L1(L) L2(N)
Control Power
1Ø, 208/230 V ~ 60 Hz
Cable : Over CV 15AWG
220-240 V ~ 50/60 Hz