MERLIN NX
IP AND MS/TP VAV CONTROLLER
General ......................................................................... 2
Dimension.................................................................. 3
Specifications .............................................................. 4
Electrical .................................................................... 4
Hardware ................................................................... 4
Modbus Client............................................................ 5
Universal IO ............................................................... 5
IP Variant ................................................................... 6
MS/TP Variant............................................................ 6
Service Button ........................................................... 8
Mounting ...................................................................... 8
Power supply ............................................................. 13
Power Wiring ........................................................... 13
Daisy Chain ............................................................. 19
BACnet IP ................................................................... 20
® U.S. Registered Trademark
Copyright © 2022 Honeywell Inc. • All Rights Reserved
INSTALLATION
INSTRUCTIONS
Antenna ...................................................................... 20
Modbus RTU............................................................... 25
Sylk Bus™ .................................................................. 26
Overview .................................................................. 27
Troubleshooting......................................................... 28
FCC Regulation ....................................................... 30
Appendix .................................................................... 32
PT1000 .................................................................... 33
PT3000 .................................................................... 36
NTC10K TYPE II ...................................................... 36
PT100 ...................................................................... 37
JOHNSON A99 ........................................................ 38
NTC20K ................................................................... 38
10K3A1 .................................................................... 40
NI1000TK5000......................................................... 42
EN1Z-1076GE51 R0722