Installation of Recessed Back Box
in New Construction
1.Mounting Back Box (See Figure 1).
a. Place the back box between two 16" (506 mm)
center-to-center wall studs at the desired mounting
height but no closer than 8" (203 mm) to adjacent wall
or floor.
b. Align back box such that the bottom and sides will be
flush with finished wall surface (top flange of back box
should protrude approximately 1/2" (12.7 mm) from fin-
ished wall surface).
c. Secure the back box in position with wood screws or
nails as shown in Figure 1.
2.Power Supply Wiring (See Figure 1)
Note: Wire compartment volume - 119in
3
(1950cm
3
).
a. Run a power supply cable into the knockout area in the
upper right hand corner of the back box. All wiring must
be in accordance with National and Local Electrical
Codes. Refer to Table 1 for correct wire size.
b. Remove disconnect switch bracket by loosening two
screws on the right side.
c. Install a cable clamp in the “knockout” in the top of the
back box.
d. Insert power supply cable through cable clamp, allow-
ing at least 6" (152mm) of leads to extend inside the
back box. Connect the blue lead wires of disconnect
switch to the supply wire leads using wire connectors
(see wiring diagram, pg. 3).
e. Ground the back box using the green screw located in
the inside top of the box.
f. Secure disconnect switch bracket in place by tighten-
ing screws.
Installation of Recessed Back Box
in Existing Construction
1.Provide a wall opening 14-1/2" (362mm) wide by 18-1/2"
(470mm) high at the desired mounting height, but no clos-
er than 8" (203mm) to floor (See Figure 2).
2.Power Supply Wiring
Note: Wiring Compartment Volume - 119in
3
(1950cm
3
).
a. Run a power supply cable into the area above the top
of the wall opening. All wiring must be in accordance
with National and Local electrical codes. Refer to Table
1 for correct wire size.
b. Remove disconnect switch bracket by loosening the
two screws on the right side.
c. Install a cable clamp in the “knockout” in the top of back
box.
d. Insert power supply cable through cable clamp, allow-
ing approximately 6" (152mm) of cable length to
remain inside the back box to facilitate connections.
3.Mounting Back Box
a. Place the back box into wall opening flush with fin-
ished wall surface on bottom and sides of box. (Top
flange of back box should protrude approximately 1/2"
or 12.7mm from finished wall surface).
b. Secure the back box in place with wood screws or
nails.
4.Wiring Disconnect Switch
a. Connect the power supply wires to the blue wires of the
disconnect switch using wire connectors (see wiring
diagram, pg. 3).
b. Ground the back box using the green ground screw
located in the inside top of the box.
c. Secure disconnect switch bracket in place by tighten-
ing screws.
Installation of Back Box with
Surface-Mounting Frame
(See Figure 3)
1.Secure back box to wall with knockouts in upper right
hand corner using screws and anchors.
2.Hang the surface-mounting frame on the back box.
Ensure that the back edge of the surface-mounting frame
is flush against the wall.
Fig. 1: Locating Recessed Back Box in New Construction
Fig. 2: Locating Recessed Housing in Existing Construction
2
Back Box
Back Box
CAUTION
FOR SAFE OPERATION AND REDUCED RISK OF FIRE,
INJURY OR HEATER DAMAGE, OBSERVE THE
FOLLOWING:
1. Do NOT use a remote thermostat with this heater. Built in
thermostat cycles the heating element only. Fan delay
control automatically turns fan ON and OFF, and provides
a fan delay OFF feature to remove residual heat
after thermostat has turned heating elements off. Wiring
of heater in any manner which defeats the fan delay OFF
feature can result in overheating and permanent dam-
age to heater, and will void the warranty.
2. For wall mounting only with air discharge downward. Do
NOT install in floor, ceiling, upside down(air discharge
upward), or sideways.
3.Do NOT operate heater without grille installed.
4.Maintain the following clearances:
•Bottom of heater to floor – 8” (203mm)
•Sides of heater to adjacent wall – 8” (203mm)
•Top of heater to ceiling – 36” (915mm)
5.This heater is hot when in use. Do NOT install heater
behind door, behind towel rack, inside closet, where
drapery could touch heater or be damaged by heat, or
where airflow to heater may be obstructed. Keep electri-
cal cords, bedding, furniture, and other items away from
heater.
6.Heater must be cleaned periodically (at least annually) to
assure proper performance and prevent overheating. See
section on cleaning and maintenance.
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