Nortec SE Series - Manual (Page 33)

Installation | 30
Remote Relay Board Wiring
The SETC (not SEP) remote relay board provides the output signal for the CV Valve Actuator and
includes 4 relays that can provide remote status indication. The remote relay board is located
as shown in Figure 33: Remote Relay Board Wiring. The PCB with the relays includes markings
which indicate the function of each terminal on the board. The relays indicate the following
status;
1 Unit On – The normally open relay is closed when the humidifier has power and the On/Off
switch is set to on.
2 Steam – The normally open relay is closed when the control board sends a signal to the CV
valve actuator to open the CV valve and steam is being produced.
3 Service – The relay can be wired to open (NC) or close (NO) when a warning is displayed on
the humidifier display and the yellow service LED is illuminated.
4 Error – The relay can be wired to open (NC) or close (NO) when a fault is detected by the
humidifier controls.
Figure 33: Remote Relay Board Wiring
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