Specifications

T1 T2 T3
L1 L2 L3
Terminal
Block
Cutout
Elements
1Ø Element wiring
(Omit for 2 element
heaters)
Optional disconnect switch
built-in or field installed
Power
60 Hz
Optional thermostat
built-in or field
installed
Blue
Blue
Motor
Cutout
NOTES:
1. Omit "L3" wiring for 1ø heaters
2. 3ø Motors used on all 480V, 7.5KV or higher
Remove jumper wire when
thermostat is used
Black
Red
Power 60 Hz
Pink
Optional
Disconnect
switch
built-in
or field
installed
T1 T2 T3
L1 L2 L3
Yellow
Blue
Sec
C1
C2
C3
3Ø Wiring
See Note #2
Optional Thermostat
Built-in or Field Installed
Motor
TO T1
TO T2
TO T3
Optional
disconnect
switch
built-in
or field
installed
Power 60 Hz
L1 L3
L2
T1 T3T2
Purple
Orange
Pink
C1
C3
C2
Remove jumper wire
when thermostat
is used
Cutout
Notes: 1 Omit "L3" wiring for 1ø heaters
3Ø Wiring
Optional
thermostat
built-in or
field installed
TO T1
TO T1
TO T2
TO T3
TO T3
TO T2
Motor
TO T2
TO T2
TO T2
TO T1
TO T1
TO T1
1Ø Wiring
Optional
disconnect
switch
built-in
or field
installed
Power 60 Hz
L1
T2
L2
T1
T3
Yellow
Blue
Pink
C1
C3
C2
Remove jumper wire
when thermostat is used
Cutout
Notes:
1. Omit "L3" wiring for 1ø heaters
2. 3Ø motors used on all 480V 7.5Kw or higher heaters.
All other heaters use 1ø motors.
TO T2
TO T2
TO T2
TO T1
TO T1
TO T1
1Ø Wiring
3Ø Wiring
Optional thermostat
built-in or field installed
TO T1
TO T1
TO T2
TO T3
TO T3
TO T2
Motor
L3
SEC
See Note #2
Black
Black/Red
WIRING (cont’d.)
CONTROL VOLTAGE WIRING — EXTERNAL REMOTE
THERMOSTATS AND FAN SWITCHES
Line voltage is present on some of the terminals.
Always disconnect the power from the heater
before making any connections.
1. Use 600 volt, NEC Class 1 insulated wiring with a minimum
gage of 18 for thermostats and minimum gauge of 14 for line
voltage motor switch (remote fan switch without relay).
2. The thermostat should be located in the area to be heated on an
inside wall. The thermostat should not be exposed to drafts,
sunlight, radiation from hot objects, or in a direct line with the
discharge from the unit heater.
3. Install the thermostat approximately 5 feet above the floor line.
4. Install the remote fan switch in any convenient location that is
protected from traffic or likely accidental damage.
5. Internal optional controls are shown on the unit heater wiring
diagrams by a dash line.
6
Figure 10
Figure 12
Figure 11
Figure 13