SKR Humidifier – kit N
User Manual
www.neptronic.com
12
8.2.
Modulating Humidifier
Wire humidistat or Building Automation System signal to modulate steam output.
Wire airflow switch to close when sensing air flow and open when no air flow is sensed.
Wire high limit humidistat to close on drop in humidity and to open when set point is reached.
Wire external cut-out, if required, to remotely switch off humidifier.
TB
2
TB
3
TB
4
To fan
relay
To external
alarm relay
Pilot - Dry contact
1A/24Vac
Pilot - Dry contact
3A/24Vac
!
TB
5
Airflow switch
High limit humidistat
External cut-off
24 Vdc
24 Vdc
+
-
Control signal
from humidistat
or BMS system
0-10Vdc
2-10Vdc
4-20mA
O
N
1
2
3
4
Wiring by others :
TB
6
24 Vac
1
2
Live
Return
TB
7
Power supply
terminals
(Fig. 12b)