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3. Remove the desired knockout from the terminal box.
!
NOTE: It is only necessary to remove the knockout(s) that
will feed the power supply wiring, keeping in mind the heater
mounting location and supply wire location.
4. Hang the heater from the hooked edge of the mounting
bracket and proceed to the wiring instructions.
Hanging Mount (Threaded Rod)
1. Unpack the heater from the carton, remove the two screws
securing the bracket to the unit and remove the screws
securing the terminal box cover. (Figure 1)
CAUTION: Care should be taken when removing the termi-
nal box cover, as the electrical connections are attached to it.
!
NOTE: See Figure 2 for minimum clearances for the unit.
2. There are four brackets on the top surface of the unit with
1/2 in. (13 mm) holes which can be used to suspend the
unit from an open ceiling using 3/8" (9.5 mm) threaded
rod.
3. Remove the desired knockout from the terminal box.
!
NOTE: It is only necessary to remove the knockout(s) that
will feed the power supply wiring, keeping in mind the heater
mounting location and supply wire location.
Wiring
WARNING: Wiring procedures and connections should be
in accordance with the National Electric Code (NEC) and local
codes.
1. Run supply wiring of proper voltage and wire size to the
location of the terminal box of the heater. (See Table 2)
Supply wiring should be enclosed in 1/2 in. (13 mm) con-
duit.
2. Wire all heaters and controls in accordance with the ap-
propriate wiring diagram.
!
NOTE: The wiring diagram for specific unit is located on
top of the heater.
Table 2 - Recommended minimum supply wire sizes are
listed in the table below:
MAXIMUM WATTS PER CIRCUIT USING 75 °C WIRE
(COPPER WIRE)
Rough in
120V 208V 240V 277V 347V
Wire Size
14
1440
2496
12
1920
3328
10
2880
4992
!
NOTE: Supply wire entry is commonly made into one
heater. Though wiring (factory furnished) can be used for con-
nection to adjacent heaters.
3. Wrap the supply ground wire around the green ground
screw and tighten.
4. Do a final and complete check of all wiring then replace the
terminal box covers being careful not to pinch any wires.
5. The terminal box covers may now be reinstalled.
WARNING: TO PREVENT THE RISK OF FIRE OR IN-
JURY, DO NOT OPERATE THE HEATER UNLESS IT IS
FULLY ASSEMBLED.
2
480V
2880
3324
4164
5760
3840
4432
5552
7680
5760
6648
8328
11520
!
NOTE: The inspection cover is intended to provide access
for electrical inspections.
6. Swing the heater upwards to secure the opposite side of
the heater to the bracket and secure with previously re-
moved screws.
Initial Set Up
After the unit has been installed, calibration of the unit to the
area will be required. This can be done by closing all doors
and windows to the room and turning the unit ON. When the
unit is initially turned on there is a 28 minute period of calibra-
tion of the unit where the software runs at full power for 20
minutes, then runs for 8 minutes to cool the heater down.
If the unit is relocated or the size of the area that it is installed
in changes, it is recommended that the unit be reset to the fac-
tory default to allow the unit to recalibrate.
Factory Default
1. Press and hold the V for 3 seconds. Both the
icons will begin to flash.
2. Within 5 seconds press ✚, then ✚, then –, then –, then
V, then –.
Sample Wiring Diagrams
240V 2/3/4/5KW 1PH
SENSOR
DISPLAY BOARD
14
13
12
11
10
9
TB1
8
7
6
5
POWER BOARD
TB3
4
3
2
1
TB2
CUTOUT
T1/FAN LOW
T3/FAN HIGH
T2/FAN NEUTRAL
T4/L2
347/600V 3/4/5KW 1PH
SENSOR
DISPLAY BOARD
14
13
12
11
10
9
L1
TB1
20A
CONTACTOR
8
T1
7
6
POWER BOARD 5
H1
TB3
4
3
2
1
TB2
CUTOUT
T1/FAN LOW
T3/FAN HIGH
T2/FAN NEUTRAL
T4/L2
208V/240V 7.5/10KW 1PH
600V
SENSOR
DISPLAY BOARD
14
7200
13
12
11
10
9
9600
L1
30A
TB1
CONTACTOR
8
T1
7
6
14400
5
POWER BOARD
H1
TB3
4
3
2
1
TB2
CUTOUT
T1/FAN LOW
MOTOR
T3/FAN HIGH
T2/FAN NEUTRAL
T4/L2
480V/600V 7.5/10KW 1PH
SENSOR
DISPLAY BOARD
14
13
12
11
10
9
L1
20A
TB1
CONTACTOR
8
T1
7
6
5
POWER BOARD
H1
TB3
4
3
2
1
TB2
CUTOUT
T1/FAN LOW
T3/FAN HIGH
T2/FAN NEUTRAL
T4/L2
240V 3/4/5KW 3PH
DISPLAY BOARD
L1
14
13
H1
12
H2
11
10
H3
L2
POWER BOARD
FAN
MOTOR
G
600V 3/4/5KW 3PH
L1
DISPLAY BOARD
TRANSFOMER
240V
347/600V
14
13
12
11
10
L1
9
20A
CONTACTOR
T1
8
7
6
H2
H3
POWER BOARD 5
4
3
2
L2
1
FAN
MOTOR
G
208V 7.5/10KW 3PH
DISPLAY BOARD
L1
L1
40A
CONTACTOR
T1
H2
H3
POWER BOARD
L2
FAN
G
277V/347V/480V/600V 7.5/10KW 3PH
DISPLAY BOARD
L1
TRANSFOMER
240V
480V/600V
14
13
12
11
10
9
L1
TB1
20A
8
CONTACTOR
7
T1
6
5
POWER BOARD
H2
H3
TB3
4
3
2
L2
1
TB2
T1/FAN LOW
FAN
T3/FAN HIGH
MOTOR
T2/FAN NEUTRAL
G
T4/L2
and
SENSOR
CUTOUT
L1
L2
H1
H2
9
H3
TB1
8
L3
7
6
5
TB3
4
3
2
1
TB2
T1/FAN LOW
FAN
MOTOR
T3/FAN HIGH
T2/FAN NEUTRAL
G
T4/L2
SENSOR
L2
TRANSFOMER
240V 347/600V
L1
L1
L1
20A
20A
TB1
CONTACTOR
CONTACTOR
T1
T1
H2
H3
H1
TB3
L3
TB2
CUTOUT
T1/FAN LOW
FAN
MOTOR
T3/FAN HIGH
T2/FAN NEUTRAL
G
T4/L2
SENSOR
L2
14
13
12
11
10
9
L1
L1
L1
30A
40A
TB1
CONTACTOR
CONTACTOR
8
T1
T1
7
6
5
H2
H3
L3
H1
TB3
4
3
2
1
TB2
CUTOUT
T1/FAN LOW
FAN
MOTOR
T3/FAN HIGH
T2/FAN NEUTRAL
G
T4/L2
SENSOR
TRANSFOMER
L2
240V
277V/347V/480V/600V
L1
L1
L1
20A
30A
CONTACTOR
CONTACTOR
T1
T1
H2
H3
H1
L3
CUTOUT
FAN
MOTOR
G
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