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Wiring Diagram—Blower (PSC Motor)
Power (Factory Wired)
Power (Field Wired)
Control (Factory Wired)
Control (Field Wired)
2
1
24
COM
18 R
208V
18 BU
240V
C
TR
Wiring Diagram—Optional Electric Heat
L1B
L2B
220
208 / 240
Voltage
by Others
L1A
L2A
1
2
6
BK: Black
R: Red
BU: Blue
3
4
5
(H)
3
5
(H)
1
2
TD **
3
1
6
5
++
14 BU (MED)
4
2
14 R (LO)
BWR
14 BK (HI)
14 Y (COM)
++
Models 12, 25, 31 and 49
Will Be Factory Set to Low.
SEQ2
CB2
12 BK
5
12 BK
3
12 Y
GND
12 Y
SEQ1
*CB1
5
12 BK
12 BK
3
12 Y
12 Y
GND
To Blower
Ground Lug
3
4
W: White
Control Circuit Wiring to
G: Green
be 24 Volt, N.E.C. Class 2
Y: Yellow
Plug Pin
Location
6
18 BK
W2
BK
W1
** TD = Time Delay (Optional)
W
C
BU
BWR = Blower Relay
G
G
R
GND = Ground Connection
R
GND
BU
4
BR / W
R
3
MTR
BK
2
+
Y
BR CAP
1
2nd Stage
18 BK
LS3
4
12 BK
1
12 BK
LS4
1st Stage
LS1
4
12 BK
1
12 BK
LS2
6-Pin Plug
5
6
Amp 350781 - 1
6-Pin Cap
2
1
3
4
6
5
TR = Transformer
MTR = Blower Motor
CAP = Motor Capacitor
Wiring Diagram - No Heat
Wire Nuts
by Others
L1
L2 or
15 Amp
Supply
Neutral
Voltage
2
1
6-Pin
To
Plug
Ground Lug
Heaters Used:
5 KW = HE1
7.5 & 10 KW = HE1 & HE2
15 KW = HE1, HE2 & HE3
20 KW = HE1, HE2, HE3 & HE4
* TB = Terminal Block (Optional)
* CB = Circuit Breaker (Optional)
SEQ = Sequencer
GND = Ground Lug
LS = Limit Switch
HE = Heater Element
Power (Factory Wired)
Power (Field Wired)
Control (Factory Wired)
Control (Field Wired)
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