Form 9822 ECO # 1-7472 REV. 10-19-18
AFA / 3320 Series
1. LOCATION OF HEATER:
A. Heater is mounted on the wall near ceiling or floor, air flow down.
CAUTION:
Do not obstruct the front grille of the heater with
curtains, furniture, etc., since the proper operation of the heater requires
a free flow intake and exhaust of air.
B.
Minimum mounting height is 10” above finished floor and 8” from
adajacent walls.
C. For surface mounting use adapter AFAA/3320EX33.
D. For semi-recessed mounting, use adaptor AFAA-2/3320EX16.
2. BEFORE MOUNTING:
A.
Insure that the supply voltage matches voltage rating on the label of
the heater.
B. Turn off electrical power to heater circuit.
3. MOUNTING INSTRUCTIONS:
A. Disassemble heater by removing 7 screws “C” as shown in Figure 1
and 2.
B. Flush mounting, see Fig. 1.
Place rough-in box “A” between studs at desired height: secure to
studs through holes “M”. The flanges on the rough-in box must rest on
the surface of the finished wall; if the box is installed prior to the
appliation of the finished wall, allowance must be made for the wall
thickness.
C. Surface mounting, See Fig. 2.
Insert rough-in box “A” into surface adapter “E”. Secure the heater
rough-in box to wall at desired height through holes “X”. Be sure that
the rough in box is centered in surface adapter. For surface mounting,
bring wiring through bottom knockout “K” only.
D. Semi-recessed mounting: Secure rough-in box so that the long flanges
extend away from the finished wall equal to the depth of the adaptor.
Bring service in through top or bottom knockout “K”. E. Place assembly
“B” into rough-in box “A”. Secure with six screws “C”.
WIRING INSTRUCTIONS REF: WD1, WD2, WD3, WD4, WD5, WD6
AND THREE PHASE UNITS
A.
Bring service leads through knockout “K” on top or bottom of rough-in
box for flush or semi-recessed mounting, bottom knockout “K” only for
surface mounting. When wiring from the bottom, install wire through
cover “G” by removing screw “H”
.
B. Attach service leads to two black leads on 208-240 volt models and
to black and white leads on 120-277 volt models, 3-phase units are
supplied with 3 black leads. Attach ground lead to green wire with
approved connectors. Comply with all national and local codes
.
C. Attach wiring compartment cover “D” to assembly with screw “C”.
5. FINAL STEPS:
A. Clean all construction dirt and debris from inside heater.
B. Attach front grille “F” with four screws “L”.
C.
Place grille frame over tabs on top of grille, snap bottom in place. For
added security install screw “Q” into bottom of frame.
6. OPERATING INSTRUCTIONS:
A.
Turn on power at the circuit breaker panel.
B.
Thermostat adjustment is made by inserting a small blade screw
driver through grille opening into slot in stem. Turn thermostat
adjustment stem fully clockwise, this will energize the heating
element and after a short delay, the fan should energize, causing
warm air discharge from bottom of the grille.
C.
After the desired temperature is reached, turn thermostat stem
counter clockwise until a click is heard from the thermostat
.
D.
Models with double-pole thermostats: Turn thermostat adjustment
stem fully counter-clockwise, this will de-energize the heating
element and fan.
7. CLEANING AND MAINTENANCE INSTRUCTIONS:
A.
At the beginning of each heating season, disconnect electrical power
at circuit breaker panel. Remove front grille.
B. Use the narrow (crevice” suction attachment of the vacuum cleaner to
remove dust and lint from heater and heating element.
C.
Lubricate the motor with SAE No. 10 oil. Two (2) oil spouts are located
on front and back of motor.
D.
Reinstall front grille with previously removed screws. Restore power to
the heater.
8" MIN
.
203 m
m
8" MIN
.
203mm
0"
10" MIN,
254 m
m
Wall Installation
INSTALLATION
INSTRUCTIONS
1
FIG. 1 FLUSH MOUNT
FIG. 2 SURFACE MOUNT
Note: This heater employs a visual alarm (light) to warn that parts of the
heater are getting excessively hot. If the alarm illuminates, immediately
disconnect power from heater and inspect for any objects on or adjacent to
the heater that may cause high temperatures. DO NOT OPERATE HEATER
WITH THE ALARM (LIGHT) ILLUMINATED.
NOTE: Three phase units do not have an alarm light, these units are
equipped with a manual reset limit control.
X
F
Y
L
10" OR (254)m
m
MINIMUM TO
FINISHED FLOOR
E
SERVICE CABLE
OR CONDUIT
K
G
H
C
D
P
Q
19 1/2
(490.5 m
m
)
14 1/8
(362 mm)
10" OR (254)m
m
MINIMUM TO
FINISHED FLOOR
A
P
L
F
C
D
Y
H
G
K
Q
