Nortec RH2+ - Manual (Page 28)

25 | Start Up
On/Off or Modulating Operation
From the factory the RH2 is configured to operate as an On/Off humidifier. It will run when 24
VAC from terminal 1 is fed back into terminal 2 through an On/Off humidistat and other security
devices in series. See On/Off or Modulating Control (J10) on page 39 for instructions on
configuring the RH2 to operate as a modulating humidifier.
Caution: Do not leave the On/Off/Drain switch in the drain position for extended
periods of time. The drain valve solenoid may heat up and result in damage to the
valve and its wiring.