Manual 2100-250
Page 5
FIGURE 4
DUCT HEATER
The following is a verbal description of the proper procedure for connecting the low voltage hookups for the
duct heater. (Refer to wiring diagram 4091-811).
1.
Black wire from duct heater to C on the 24 volt terminal block.
2.
Green wire from duct heater to green wire from thermostat. These wires must be wire nutted and isolated
from the terminal block. Failure to do so will result in improper heater operation.
3.
Connect green with tracer from heater to the G terminal on the 24 volt terminal block.
4.
Connect the white wire from the heater to W2 on 24 volt terminal block.
A.
For the 15 and 20 KW duct heaters, connect the white and white with black tracer wires to W2.
TABLE 4
ACCESSORY ITEMS – DUCT HEATER
(SEE FIGURE 4)
.
o
N
t
r
a
P
H
P
s
t
l
o
V
W
K
m
u
m
i
n
i
M
y
t
i
c
a
p
m
A
e
z
i
S
e
r
i
W
j
m
u
m
i
x
a
M
e
s
u
F
s
n
o
i
s
n
e
m
i
D
U
C
L
A
A
B
C
D
E
F
0
8
0
-
4
0
6
8
1
0
4
2
0
.
5
7
2
0
1
#
8
#
0
3
8
0
1
4
7
7
2
1
1
8
0
-
4
0
6
8
1
0
4
2
8
.
9
2
5
6
#
4
#
5
5
8
0
1
4
7
7
6
1
2
8
0
-
4
0
6
8
k
1
0
4
2
7
.
4
1
8
7
4
#
1
#
0
8
5
1
8
1
5
1
1
9
8
1
3
8
0
-
4
0
6
8
k
1
0
4
2
2
.
9
1
0
0
1
2
#
0
#
0
0
1
5
1
8
1
5
1
1
9
8
1
j
Use wire suitable for at least 75° C.
k
Fused units (over 48 amperes).
NOTE: All duct heaters are supplied with backup protection and internal fusing as required by NEC.
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