Honeywell CENTRA LINE MERLIN NX Series - Power Wiring Examples; Single Controller Wiring; Multiple Controller Wiring; Controller and Field Device Wiring

MERLIN NX IP AND MST/TP VAV CONTROLLER - INSTALLATION INSTRUCTIONS
EN1Z-1076GE51 R0722 14
Power Wiring Examples
Fig. 14 Power Wiring Examples
UL Listed Class 2
Transformer
100 VA
120 / 240
VAC
3
2
1
~
V0
MERLIN IP/MSTP CONTROLLER
COM
24 VAC
Earth
Ground
1
1
WHEN CONNECTING POWER TO THE MERLIN IP/MSTP VAV CONTROLLERS, CONNECT
THE COM LEG OF THE VAC SECONDARY CIRCUIT TO A KNOWN EARTH GROUND.
UL Listed Class 2
Transformer
100 VA
120 /
240 VAC
3
2
1
~
V0
3
2
1
~
V0
3
2
1
~
V0
COM
24 VAC
Earth
Ground
1
MERLIN IP/MSTP
CONTROLLER
MERLIN IP/MSTP
CONTROLLER
MERLIN IP/MSTP
CONTROLLER
UL Listed Class 2
Transformer
Field Device
Transformer
100 VA
120 /
240 VAC
3
2
1
~
V0
AC OUT
5
4
SR IN
8
7
6
COM
24 VAC
Earth
Ground
1
SR1
C
SR2
120 /
240 VAC
M
Power Wiring Example For One Controller Per Transformer
Power Wiring Example For Two Or More Controller Per Transformer
Controller Transformer And Field Device Transformer Wiring
MERLIN IP/MSTP CONTROLLER