SKR Humidifier – kit N
User Manual
www.neptronic.com
11
8.
Control diagrams
IMPORTANT:
1 - Risk of malfunction. Do not supply power from external source to control terminals TB4 and TB5.
These terminals are powered by the humidifier.
2 -
Maximum length of each control cable is 250 feet (76m).
8.1.
ON/OFF Humidifier (standard)
Wire humidistat or Building Automation System signal to close on humidity drop below set point.
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.
(Fig. 12a)
T
B
2
T
B
3
T
B
4
Power
supply
terminals
To fan
relay
To external
alarm relay
Pilot - Dry contact
1A/24Vac
Pilot - Dry contact
3A/24Vac
Relays
!
T
B
5
Airflow switch
High limit
humidistat
Humidistat
or BMS system
24 Vdc
24 Vdc
Fuse
(when
required)
O
N
1
2
3
Wiring by others :