Regal-Beloit GE ECM X13 - Page 34

© 2006 GE ECM by Regal-Beloit - 32 - Indoor Blower Motors v0.2
The Humidistat Option
The humidistat wiring may be through the OEM’s main control board or the interface
board. The connection may be labeled (DeHum) or (DH). In simple terms a
humidistat works just like a thermostat. The customer sets the level of humidity
desired, and the humidistat opens and closes a set of contacts when the humidity is
higher or lower than the set point. The humidistat option is typically utilized in one of
two ways.
Option 1
- In this application a humidistat is used separate from the thermostat to break
the signal to the interface board.
Option 2
- In this application the thermostat and humidistat functions are built into one
control.
Keep in mind that each manufacturer may or may not utilize this function and
may have other options of control, wiring and set-up.
Humidistat
Tap Board
Motor
OEM Specific
Connects to
Connects to
Tap Board
Motor
OEM Specific
Connects to
Connects to
Thermidistat