NOTE: If heater is located in a high traffic area, where it may
be subjected to vandalism or abuse, take extreme care to see
that the box is firmly attached to the wall.
3.Power Supply Wiring
NOTE: Wiring Compartment Volume - 119in
3
(1950cm
3
).
a. Run a power supply cable into the area of the upper
right corner of the mounting frame. Arrangement of
wiring to this point must be in accordance with nation-
al and local codes. Refer to specifications on page 2 for
proper wire sizes.
NOTE: If the wiring is to run through the wall, cut a hole
in the area of the top of the backbox. Run the supply wire
through this hole. Then remove the “knockout” from the
top of the box and proceed to step C.
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 allow-
ing 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,
pg. 3).
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.
Installation of Heater Assembly and Grille
After back box is completely installed and no further con-
struction dirt is expected, clean debris from back box, remove
heater assembly from its carton. Refer to Figure 4 and pro-
ceed as follows:
1. Insert the heater assembly into back box, placing
the four mounting holes (with key-hole slots) over the
screws in the box. 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 diagrams, pg. 3) After connection, push wires back
into the opening.
4. Turn thermostat to the extreme counterclockwise
position.
5. Push disconnect switch into ON position.
6. Latch at bottom of heater assembly should be in up
position.
7. Mount grille over tabs on fan deck and push down until
grille is secure.
8. Insert screwdriver through bottom louver in grille and
loosen screw while holding bottom of grille against
wall. This will allow latch to drop in place. Tighten screw.
Fig. 3: Surface Mounting Installation
Fig. 4
3-13/16" (97mm)
HANG FRAME
ON BACK BOX
MOUNT BACK
BOX TO WALL
USING REAR
MOUNTING
BRACKETS
19" (482mm)
15-5/32" (385mm)
Wiring Diagrams
3
GRILLE
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 bottom
element terminals.)
2000 & 1500 WATT HEATERS
208V, 240V, OR 277V
DISCONNECT
