Power Wiring Examples - Honeywell Centra Line MERLIN NX Series Installation Instructions Manual

MERLIN NX IP AND MST/TP VAV CONTROLLER - INSTALLATION INSTRUCTIONS

Power Wiring Examples

EN1Z-1076GE51 R0722
Power Wiring Example For One Controller Per Transformer
UL Listed Class 2
Transformer
120 / 240
VAC
1
100 VA
Earth
Ground
Power Wiring Example For Two Or More Controller Per Transformer
UL Listed Class 2
Transformer
120 /
240 VAC
1
100 VA
Earth
Ground
Controller Transformer And Field Device Transformer Wiring
UL Listed Class 2
Transformer
120 /
240 VAC
1
100 VA
Earth
Ground
WHEN CONNECTING POWER TO THE MERLIN IP/MSTP VAV CONTROLLERS, CONNECT
1
THE COM LEG OF THE VAC SECONDARY CIRCUIT TO A KNOWN EARTH GROUND.
Fig. 14 Power Wiring Examples
14
24 VAC
COM
1 2 3
MERLIN IP/MSTP CONTROLLER
24 VAC
COM
1 2 3
MERLIN IP/MSTP MERLIN IP/MSTP
CONTROLLER CONTROLLER
24 VAC
COM
1 2 3 4 5
MERLIN IP/MSTP CONTROLLER
1 2 3 1 2 3
MERLIN IP/MSTP
CONTROLLER
Field Device
Transformer
120 /
240 VAC
M
6 7 8