6
LO-PRO IO&M
B51021-004
Wiring Diagrams
Single Speed, Single Phase Motor
T-1
T-4
Ground B
L 2
L1
Ground A
Line
When ground is required, attach to ground A or B with No. 6 thread forming
screw. To reverse, interchange T-1 and T-4.
2 Speed, 2 Winding, Single Phase Motor
Ground A
Ground B
T-1
T-4
Low Speed
High Speed
L1
L2
Line
When ground is required, attach to ground A or B with No. 6 thread forming
screw. To reverse, interchange T-1 and T-4 leads.
Single Speed, Single Phase, Dual Voltage
Ground B
J-10
T-5
Ground A
Link A
Link B
Low Voltage
Line
L 2
L 1
Ground A
Link A & B
L1
L2
Line
Ground B
T-5
J-10
When ground is required, attach to ground A or B with No. 6 thread forming
screw. To reverse, interchange T-5 and J-10 leads.
Typical Damper Motor Schematic
Fan
Motor
Damper
Motor*
Second
Damper
Motor
Transformer**
Transformer**
L3
L2
L1
For 3 Phase, damper motor voltage should be the same between L
1
and L
2
.
For single phase application, disregard L
3
. *Damper motors may be avail-
able in 115, 230 and 460 volt models. The damper motor nameplate voltage
should be verified prior to connection. **A transformer may be provided in
some installations to correct the damper motor voltage to the specified volt-
age.
3 Phase, 9 Lead Motor
4 5 6
1
7
2
8
3
9
L1 L2 L3
4 5 6
7 8 9
1 2 3
L1 L2 L3
Low Voltage
208/230 Volts
High Voltage
460 Volts
3 Phase, 9 Lead Motor
Y-Connection
7
1
6
7 8 9
4 5 6
1 2 3
Low Voltage
208/230 Volts
High Voltage
460 Volts
8
2
4
9
3
5
L1
L3
L2
L1
L3
L2
3 Phase, 9 Lead Motor
Delta-Connection
To reverse, interchange any two line leads.
2 Speed, 1 Winding, 3 Phase Motor
Motor
1
2
3
4
5
6
Together
High Speed
Line
L1
L 2
L 3
1
2
3
4
5
6
Open
Low Speed
Line
L1
L 2
L 3
Motor
To reverse, interchange any two line leads. Motors require magnetic
control.
2 Speed, 2 Winding, 3 Phase
L
1
T
1
T
2
T
3
Low Speed
Low Speed
Low Speed
High Speed
High Speed
High Speed
Motor
T
13
T1
2
T
11
L
3
Line
L
3
To reverse: High Speed-interchange leads T
11
and T
12
. Low Speed-inter-
change leads T
1
and T
2
. Both Speeds-interchange any two line leads.
