27
Exterior-Mounted Blower Motor
SEL0016521
NOTE: Wiring for
external blower motor
Common
4º Speed
3º Speed
2º Speed
1º Speed
BU
BK
GY
RD
WH
WH
BU
BK
GY
RD
1
9
2
RD
RD
RD
GY
BU
BR
1
BR
BR
BR
BR
GY
GY
R
R
BU
BK
WH
YL/GN
G
L N
NOTE: Wiring diagram is drawn
with plenum in down position.
6
GY
GY
GY
BU
GY
GY
BR
BR
BR
BR
WH
WH
RD
RD
GY
GY
BK
BK
1
1
5
4
3
BK
BK
GY
BR
8
BR
WH
RD
RD
WH
BR
RD
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
1
2
3
111111111
1
2
3
1
4
5
6
7
8
9
10
11
12
2
3
4
5
6
7
8
9
10
11
12
Com
Com
Com
Com
Com
N.O.
N.O.
N.O.
N.O
.
N.O
.
N.C
.
N.C
.
N.C.
N.C.
N.C.