Nortec NH-EL Series - Manual (Page 27)

Installation | 24
On/Off Control Wiring
Figure 15: On/Off Controls
Figure 16: Digital On/Off Humidistat
Note: 1
2
3
4
Humidifier will run when circuit between
terminal 1 and 2 on humidifier is closed.
Terminal 1 is 24 VAC Hot, turn unit off to
avoid shorting while wiring.
Digital Humidistat requires 24 VAC power
from terminals 1 and 3 of humidifier.
2520273 - Digital On/Off Duct Humidistat
can also be used for duct high limit. Wire
in series to 3 - Common and 4 - Digital Out
of the humidistat.
Humidifier Terminal Strip
Air Proving
Switch
Duct High
Limit
2548731 - Digital
On/Off Humidistat
1
–
C
om
m
on
2
–
24
VA
C
3
–
D
ig
ita
l I
n
4
–
D
ig
ita
l O
ut
5
–
F
an
Acti
va
tion
6
–
F
an
Acti
va
tion
7
–
Te
m
pe
ra
tu
re
8
–
Te
m
pe
ra
tu
re