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19
WIRING DIAGRAM
S50
4° Speed
3° Speed
2° Speed
1° Speed
Note: Wiring Diagram is drawn
with plenum in down position
Component Layout
RD
RD
RD
GY
YL/GN
BR
YL
Neutral
BU
BK
GY
RD
WH
WH
RD
GY
BK
BU
BR
BU
BR
GY
RDRD
GY
BR
BR
BR
BR
BU
GY
GY
GY
GY
GY
BU
WH
BK
YL/GN
GND LN
RD
BK
GY
RD
WH
BR
BK
GY
RD
WH
BR
BK
WH
RD
BR
Motor Specifications
Power supply
Frequency
Wattage rating
Amperage
Motor Resistance
120 VAC
60 Hz
420 W
3.7 A
Blue - White
Blue - Red
Blue - Gray
Blue - Black
21.6 Ohms
18 Ohms
14.3 Ohms
9.8 Ohms
Blower Switch operation
Contact
Function
1 - 3
3 - 5
5 - 7
8 - 10
10 - 12
Off
1st Speed
2nd Speed
3rd Speed
4th Speed
Num.
Filter microswitch
1
2
3
4
5
6
7
8
9
Filter microswitch
Plenum Down Limit Switch
Plenum Up Limit Switch
Motor microswitch
Plenum Drive motor
Blower motor
Blower Speed Switches
Start Sw. - Plenum Up/Down
Description
SEL0015061B
8
9
2
1
5
3
6
M
M
123
4
7
1
1
3
24
5
6
7
8
9
10
11
12
N.O.
N.C.
COM
N.O.
N.C.
COM
N.O.
N.C.
COM
N.O.
N.C.
COM
1
1
N.O.
N.C.
COM
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