Multi Mode Wiring (Nhtc Only) - Nortec NHTC Installation And Operation Manual

Multi Mode Wiring (NHTC Only)

 Connect up to 16 units (equivalent of 1600 lb/hr) using 18-24 AWG multi-strand, twisted
pair, shielded cable.
 Connect humidistats/transducers and On/Off safety loop to master unit only.
 When connecting double units connect only to driver board A.
 See Multi Mode on page 48 and Multi Unit Op. Range on page 54for software configuration.
Master
Slave 1
Install Jumper on
JP1 on last
humidifier
Daisy chain pole 2 and 3
of terminal J2 of the
driver board.
Note:
Do not reverse polarity.
Do not connect to pole 1 or 4.
Figure 29: Multi Mode Wiring
Daisy Chain
up to 16
Humidifiers
Slave X
Installation | 28