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19
WIRING DIAGRAM
S50
7
YL
YL/GN
BR
9
2
Neutral
4˚ Speed
3˚ Speed
2˚ Speed
1˚ Speed
RD
RD
RD
RD
RD
GY
GY
GY
GY
BUBU
BU
BK
BK
WH
WH
WH
BK
RD
RD
BR
BR
BR
BR
BR
BU
RD
GY
BK
BK
GY GY
RD
RD
WH
WH
BR BR
BR
BR
GY
GY
GY
GY
GY
RD
BU
BK
WH
YL/GN
GN
LN
SEL0015061
NOTE: Wiring diagram is drawn
with plenum in down position.
Com
Com
Com
ComCom
N.C.
N.C.
N.C.
N.O.
N.O.N.O.
N.O.
N.O.
N.C.
N.C.
1
8
5
43
6
1
1
1
1
2
3
4
5
6
7
8
9
10
11
12
1
23
Motor Specifications
Power supply 120 VAC
Frequency
60 Hz
Wattage rating
420 W
Amperage 3.7 A
Motor Resistance
BU/WH 21.6 Ohms
BU/RD 18 Ohms
BU/GY 14.3 Ohms
BU/BK 9.8 Ohms
Component Layout
Num.
Description
6
1
2
3
4
5
7
8
9
Filter microswitch
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
Blower Switch Operation
Contact
Function
1 - 3
OFF
3 - 5
1st Speed
5 - 7
2nd Speed
3rd Speed
8 - 10
10 - 12
4th Speed
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