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Field Wiring
Built-in Or Field Installed
Factory Wiring
Optional Thermostat
Built-in Or
Field Installed
Cutouts
To Elements
To Elements
Stage 1
Stage 2
Motor
3Ø
Note: Heater Requires
Fan Relay For 480V Motors
T3
T3
T1 T2
T1 T2
(See Fig. R)
C1
C2
34-41 34-42 34-44
Standard Motor Connection
Figure Q
Field Installed
Built-in Or Field Installed
Factory Wiring
Warning - First Stage Of
Thermostat Must Be
C3
Connected To Terminals C1
& C2 To Insure That Motor
C2
Will Be Energized With First
Stage Heat Operation
C1
Stage 1
Fan
Note: For Single Stage
Thermostat, See Fig. J
Stage 2
Transformer
2 Stage Thermostat
Color Code Index
(By Others)
PRI.
PRI. XFMR
120V SEC.
24V SEC.
VOLT.
LEAD CLRS.
LEAD CLRS.
LEAD CLRS.
H1
H2
X1
X2
X1
X2
208
BLK
RED
BLK
WHT
YEL
BLU
240
BLK
ORG
BLK
WHT
YEL
BLU
32-00 30-00
480
BLK
BLK/RED
BLK
WHT
YEL
BLU
Figure S
Warning - First Stage Of Thermostat
Must Be Connected To Terminals C1 & C2
To Insure That Motor Will Be Energized
With First Stage Heat Operation
Note: For Single Stage
Thermostat, See Fig. M
C3
C2
Stage 1
Fan
C1
Stage 2
Control Power
(By Others)
2 Stage Thermostat
(By Others)
Field Installed
Built-in Or Field Installed
Factory Wiring
31-00 33-00
Figure U
Warning - First Stage Of Thermostat
Must Be Connected To Terminals C1 & C2
To Insure That Motor Will Be Energized
With First Stage Heat Operation
Field Installed
Built-in Or
Field Installed
Factory Wiring
C2
C1
Heat
Stage 1
Fan
Stage 2
2 PDT Switch
2 Stage Thermostat
(By Others)
(By Others)
Alternate Customer Hook Up (1 Stage)
Thermostat
Jumper
C1
Jumpers
C4
C2
Fan
1
Thermostat
2
3
4
Heat
W/sub-base
C3
(By Others)
Figure W
WIRING DIAGRAMS
Elements
Elements
Motor
3Ø
Stage 1
Stage 2
Fuses
KTK-3
1
2
3
T1
T2
T3
T1
T2
T3
Contactor
7
C1
C2
(Typ.)
8
9
10 11
12
Fuses
Optional Summer
(When Req'd)
Fan Switch
AL3
BL3
Built-in Or
AL2
Field Installed
BL2
AL1
BL1
Optional Disconnect
Switch Built-in Or
L1
L2 L3
Field Installed
3 Phase,
60 HZ Power
MOTOR
Elements
Elements
3Ø
Stage 2
Stage 1
T1T2T3
T1T2T3
Contactor
Contactors
C2
C1
Cutouts
X1
X2
Fuses KTK-3
XFMR
Fuses
(When Req'd)
H1
H2
AL2 AL3
AL1
BL1
Disconnect
Switch Built-in Or
Field Installed
L1
L2
L3
3 Phase
60 Hz Power
Elements
Elements
Motor
3Ø
Stage 2
Stage 1
Fuses
KTK-3
T1
T1
T2
T3
Contactors
C2
C1
Cutouts
Fuses
(When Req'd)
AL3
AL2
AL1
BL1
Optional Disconnect
Switch Built-in Or
Field Installed
L1 L2 L3
3 Phase,
60 HZ Power
Elements
Elements
Stage 1
Stage 2
Fan
Relay
C3
C4
T1T2
T3
T1T2
Contactor
C1
C2
(Typ.)
Cutouts
C3
Motor
3Ø
Fuses KTK-3
Fuses
AL2 AL3
(When Req'd)
AL1
BL1
Control Power
(By Others)
Optional Disconnect
Switch Built-in Or
L1 L2 L3
Field Installed
3 Phase
31-45 33-45
60 HZ Power
C2
T1T2T3
T1T2T3
Contactor
C1
C2
Motor
3Ø
Standard Motor Connection
Summer Fan Switch
Field Installed
Built-in Or Field Installed
Factory Wiring
PRI.
PRI. XFMR
120V SEC.
VOLT.
LEAD CLRS.
LEAD CLRS.
H1
H2
X1
X2
208
BLK
RED
BLK
WHT
240
BLK
ORG
BLK
WHT
480
BLK
BLK/RED
BLK
WHT
Transformer
Color Code Index
Warning - First Stage Of
Thermostat Must Be
Connected To Terminals C1 &
C2 To Insure That Motor Will
Be Energized With First Stage
Heat Operation
BL3
2 Stage Thermostat
BL2
(By Others)
Alternate Customer Hook Up (1 Stage)
Thermostat
Jumpers
Thermostat
2
4
3
W/sub-base
Heat
(By Others)
Warning - First Stage Of Thermostat
Must Be Connected To Terminals C1 & C2
To Insure That Motor Will Be Energized
With First Stage Heat Operation
Field Installed
Built-in Or
Field Installed
Factory Wiring
T2
T3
BL3
2 Stage Thermostat
BL2
(By Others)
Alternate Customer Hook Up (1 Stage)
Thermostat
Jumpers
Thermostat
2
3
4
Heat
W/sub-base
(By Others)
PRI.
PRI. XFMR
120V SEC.
VOLT.
LEAD CLRS.
LEAD CLRS.
H1
H2
X1
X2
208
BLK
RED
BLK
WHT
240
BLK
ORG
BLK
WHT
480
BLK
BLK/RED
BLK
WHT
Transformer Color Code Index
T3
Warning - First Stage Of
Thermostat Must Be Connected
To Terminals C1 & C2
To Insure That Motor Will
Be Energized With First
Stage Heat Operation
BL3
2 Stage Thermostat
BL2
(By Others)
Alternate Customer Hook Up (1 Stage)
Thermostat
Jumpers
Thermostat
2
3
4
W/sub-base
Heat
(By Others)
9
Optional Thermostat
Elements
Built-in Or
Field Installed
Stage 1
C3
C2
T1T2T3
Contactor
C1
Cutouts
2
1
3
7
9
8
10 11
C1
12
AL2 AL3
AL1
Optional Disconnect
Switch Built-in Or
Field Installed
Not For Use With 480V
34-43, 35-43 34-45, 35-45
Figure R
Field Installed
24V SEC.
LEAD CLRS.
Built-in Or Field Installed
Elements
Factory Wiring
X1
X2
YEL
BLU
YEL
BLU
Stage 1
YEL
BLU
C3
C4
T1 T2T3
C2
C1
Cutouts
X2
X1
C1
XFMR
Heat
Stage 1
Fan
Stage 2
H1
H2
2 PDT Switch
AL2 AL3
(By Others)
AL1
Jumper
C1
Disconnect
C4
Switch Built-in Or
C2
Fan
1
Field Installed
C3
30-43 32-43
Figure T
Elements
Stage 1
C3
C4
C2
T1 T2
C1
Cutouts
C1
Heat
Stage 1
Fan
Stage 2
AL2 AL3
2 PDT Switch
(By Others)
AL1
Jumper
Optional Disconnect
C1
Switch Built-in Or
C4
Field Installed
C2
Fan
1
C3
34-43 35-43
Figure V
Field Installed
24V SEC.
LEAD CLRS.
Built-in Or Field Installed
Elements
X1
X2
Factory Wiring
YEL
BLU
YEL
BLU
Stage 1
YEL
BLU
C3
C4
T1 T2T3
C2
C1
Cutouts
X2
X1
C1
XFMR
Heat
Stage 1
Fan
Stage 2
H1
H2
2 PDT Switch
AL2
(By Others)
AL1
Jumper
C1
Disconnect
Switch Built-in Or
C4
Field Installed
C2
Fan
1
C3
30-45 32-45
Figure X
Elements
Stage 2
Fan Relay
T1T2T3
Contactor
C2
C3
Motor
3Ø
Fuses KTK-3
Fuses
(When Req'd)
BL3
BL2
BL1
L1
L2
L3
3 Phase
60 HZ Power
Elements
Stage 2
T1T2T3
Contactor
C2
(Typ.)
C3
Motor
3Ø
Fuses KTK-3
Fuses
(When Req'd)
BL3
BL2
BL1
L1 L2 L3
3 Phase
60 HZ Power
Elements
Fan
Relay
Stage 2
T3
T1T2
T3
Contactor
C2
(Typ.)
C3
Motor
3Ø
Fuses KTK-3
Fuses
BL3
(When Req'd)
BL2
BL1
L1 L2 L3
3 Phase
60 HZ Power
Elements
Stage 2
T1T2T3
Contactor
C2
(Typ.)
C3
Motor
3Ø
Fuses KTK-3
Fuses
(When Req'd)
AL3
BL3
BL2
BL1
L1 L2 L3
3 Phase
60 HZ Power
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