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b. Remove the "knockout" on the top side of the frame.
c. Remove disconnect switch bracket by loosening the two
screws on the right side.
d. Feed the power supply cable through the frame allowing
6" (152mm) of lead to remain inside the back box (using cable
clamp, connector, or other suitable strain relief).
e. Secure the power supply cable to the back box (using cable
clamp, connector, or other suitable strain relief) allowing
6" (152mm) of lead to remain inside the back box.
f. Connect supply wires to blue wires of disconnect switch using
wiring connectors (see wiring diagram, next page).
g. Ground the back box by connecting the supply ground leadwire
to the green ground screw located in the inside top of the box.
h. Secure disconnect switch bracket in place.
POWER LEADS
BACK BOX
RECESS WALL
HOUSING
THERMOSTAT
Fig. 4
THERMOSTAT KNOB
Installation of Heater Assembly and Grille
After back box is completely installed and no further
construction dirt is expected, clean debris from back box, remove
heater assembly from its carton, then refer to Figure 4 and proceed
as follows:
1. Insert the heater assembly into back box, placing the four
mounting holes (with key-hole slots) over the screws in the
housing. Tighten all screws securely.
2. If surface-mounting frame is used, ensure that the frame is even
with all four heater assembly tabs before tightening screws.
3. Connect the two disconnected switch wires to the heat-control
switch (thermostat) leads using wirenuts (see wiring diagram,
next page). After connection, push wires back into the
opening.
4. Turn thermostat to the extreme counterclockwise position.
5. Push disconnect switch into ON position.
6. Install (2) plastic covers on back box as follows: (See Fig. 4)
NOTE: Both top and bottom plastic covers are identical.
• TOP - Align the screw bosses on the back of the plastic cover
with the second hole down from the top of the back box and
attach it with the two screws provided.
• BOTTOM - Align the screw bosses on the back of the other
plastic cover with holes at the bottom of the back box that are
just above the fan deck mounting screws and attach it with two
screws provided.
7. Remount the wire compartment cover. Install the front cover by
hooking the (2) tabs on the one side then rotating the front cover
into place making sure that all four tabs are snapped onto the
front cover.
8. Fit the thermostat knob onto the thermostat shaft and push into
place.
WIRING DIAGRAMS (ALL 1Ø)
ELEMENT
F.D.
ELEMENT
MANUAL
4800, 4000, & 3000 WATT HEATERS
208V, 240V, OR 277V (Full wattage heaters can be converted to half
wattage by removing the red jumper wire connecting the top and bot-
tom element terminals.)
DISCONNECT
SWITCH
PLASTIC COVER
INNER FRAME
ASSEMBLY
PLASTIC
COVER
FRONT COVER
FAN MOTOR
L1
L2
CYC
L2 or N
L1 OFF
DISCONNECT
T-STAT
RESET
LIMIT
WIRING DIAGRAMS (ALL 1Ø)
F.D.
ELEMENT
MANUAL
2000 & 1500 WATT HEATERS
208V, 240V, OR
FAN MOTOR
ELEMENT
F.D.
ELEMENT
MANUAL
RESET
LIMIT
4800, 4000, & 3000 WATT HEATERS
ELEMENTS
FOR THREE PHASE WALL HEATERS
FAN
DELAY
ELEMENTS
1. Rotate the thermostat fully clockwise. This should energize the
heating elements and cause warm air to flow from the hot air
discharge at the openings in the bottom of the grille.
NOTE: This heater is provided with a fan delay control that allows
the heating element to warm prior to the fan coming on. This delay
will also allow the fan to operate for a short period after the heating
element has been turned off to remove the residual heat from the
heater.
2. After the operation check, rotate the thermostat to the desired
position to obtain room comfort.
3. For continuous fan only operation (elements will not be
energized) rotate thermostat knob where indicator dot on knob is
aligned with "FAN".
NOTE: For best results, the heater should be left "ON"
constantly during the heating season because the thermostat, when
properly set, will maintain the desired temperature.
3
FAN MOTOR
L1
L2
CYC
L2 or N
DISCONNECT
L1 OFF
T-STAT
RESET
LIMIT
277V
L1
L2
CYC
L2 or N
DISCONNECT
L1 OFF
T-STAT
347V, 600V
FAN
MOTOR
FIELD WIRING
FAN
DELAY
GND
DISCONNECT
1
8
6
RELAY
6
4
2
L1
OFF
CYC
L2
THERMOSTAT
MANUAL
RESET
WIRING DIAGRAM
FAN
FIELD WIRING
MOTOR
GND
L1
OFF
DISCONNECT
CYC
L2
MANUAL
RESET
1
8
6
RELAY
0
4
2
WIRING DIAGRAM
4800 WATT 208 VOLT
SINGLE PHASE WALL HEATER
Operation
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