Nortec SE Series - Manual (Page 27)

Installation | 24
On/Off Control Wiring
Figure 21: On/Off Controls
Figure 22: Digital On/Off
Humidistat
Note: 1
2
3
4
Air Proving
Switch
Humidity Control
2548731 - On/Off
Wall Humidistat
Duct High Limit
2548732 - On/Off
Duct Humidistat
Humidifier Terminal Strip
Knockouts provided
in top and bottom panels.
Install strain relief (by others)
Humidifier will run when circuit between
terminal 1 and 2 on humidifier is closed.
Terminal 1 is 24VAC Hot, turn unit off to
avoid shorting while wiring.
Digital Humidistats require 24 VAC power
from terminals 1 and 3 of humidifier.
Humidity Control can be wall mounted
as shown or return air duct mounted.
1- 24 VAC
2 - On/Off Loop
3 - Ground
4 - Control Signal
5 - Limit Signal (SETC only)
6 - 5 VDC
7 - Ground
8 - Full Tank Blow Down
9 - Ground
10 -
11 - Actuator power
12 -
Actuator power
0-10 VDC Out
1
-
G
ro
u
n
d
2
-
2
4
V
A
C
3
-
C
o
m
m
o
n
4
-
D
ig
it
a
l
O
u
t
5
-
F
a
n
R
e
la
y
6
-
F
a
n
R
e
la
y
7
-
N
T
C
S
e
n
s
o
r
8
-
N
T
C
S
e
n
s
o
r
Air Proving Switch
Wire to make when
sensing air flow
Duct High Limit
2548732 - On/Off Duct Humidistat
Wire to make on drop in humidity
Humidity Control
2548731 - On/Off Wall Humidistat or,
2548732 - On/Off Duct Humidistat
S
E
E
X
T
C o n n e ct 2 4 VAC ,
te rm in a l 1 o f h u m id ifie r to
te rm in a l 2 o f co n tro lle rs.
C
o
m
N
/O
1
-
G
ro
u
n
d
2
-
2
4
V
A
C
3
-
C
o
m
m
o
n
4
-
D
ig
it
a
l
O
u
t
5
-
F
a
n
R
e
la
y
6
-
F
a
n
R
e
la
y
7
-
N
T
C
S
e
n
s
o
r
8
-
N
T
C
S
e
n
s
o
r
OR