Accessory Relay Pcb Connections - Nortec EL005 Installation Manual

5.8.3.10 Accessory Relay PCB Connections

The optional accessory relay PCB on the Nortec EL steam humidifier has the following four potential-
free relay contacts that can be used to control other accessory devices. Refer to
terminal contacts.
• Flush A – this normally open (NO) relay can be wired to activate or deactivate the optional valve for
flushing the water supply line for steam cylinder A.
• Flush B – this normally open (NO) relay can be wired to activate or deactivate the optional valve for
flushing the water supply line for steam cylinder B.
• Fan Activate B – this normally open (NO) relay can be wired to activate or deactivate an external
fan of the AHU (air handling unit) connected to steam cylinder B.
• Fan Activate A – this normally open (NO) relay can be wired to activate or deactivate an external fan
of the AHU connected to steam cylinder A.
Figure 35:
The accessory relay PCB connects to the connector J3 on the Nortec EL control board.
Installation
52
J3 on Control Board
INTERNAL
EXTERNAL
Accessory Relay PCB Connections (Optional)
F1
100mA
Flush A Flush B
1 2 3 4 5 6 7 8 9 10
2582302_C_EN_1611
Figure 35
Fan B Fan A
for the relevant
Nortec EL