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ON/OFF
SWITCH
CORD
SET HOLE
IN
CASING
BACK
HEAT SHIELD
GROUND
WIRE SCRE
W
REFLEC
TOR AND
LOUVER
S ARE
REMOVED
FROM CASING
ASSEMBL
Y
INSTALLING OPTIONAL BLOWER SRB-18T
If heater is installed onto the wall, in order to install the optional
blower, the heater must be removed from the wall. If heater is
installed on optional floor stand there is adequate access area
available to install the optional blower.
1. Turn “OFF” gas supply to the heater.
2. Remove lower louver from casing assembly (2 screws).
3. Remove reflector from casing assembly (2 screws).
4. Remove upper louver from casing assembly (2 screws).
5. Insert the fan control wires and the upper portion of the fan
control through the 3/4” (19mm) diameter hole on the bottom
side of the top heat shield. The fan control wires will enter into
the top portion of the heater and the fan control disc will be
facing the ceramic plaques. Attach fan control to the bottom
side of the top heat shield with (2) screws provided with the
optional blower.
6. Route cord set through 9/16” (14mm) diameter hole on casing
assembly back. Insert approximately 3” (76mm) of cord set
into casing assembly back.
7. When you are facing the front of the heater, position the optional
blower assembly onto the top heat shield of the heater. The
motor wire harness should be facing into the top, right portion
of the heater.
8. Attach (1) pin terminal from black (hot) wire, smooth insula-
tion on cord set to (1) socket terminal on fan control wire
harness.
9. Attach (1) pin terminal from black (neutral) wire, ribbed insu-
lation on cord set to (1) socket terminal from white (neutral)
wire on motor wire harness.
10. Attach (1) pin terminal on fan control wire harness to (1) socket
terminal from black (hot) wire on motor wire harness.
11. Attach the green ground wire from the motor wire harness
and the green ground wire from the cord set to the bottom
right side of the blower housing with (1) screw provided with
the optional blower.
12. With the heater standing upright, position the air discharge
opening of the blower housing
downward
. Place the bottom
flange of the blower housing over the top edge of the top heat
shield. Insert the blower housing into the top portion of the
heater by pivoting the blower housing
upward
90°. Attach
the blower housing to the casing assembly with (4) screws
provided with the optional blower.
13. Grasp cord set at casing assembly back and pull excess cord
set through casing assembly back. Secure cord set in casing
assembly back with the strain relief provided with the optional
blower.
14. Installation of optional blower is completed.
15. If heater was removed from the wall, in order to install optional
blower, check for gas leaks at all gas connections before lower
louver is replaced onto casing assembly.
Attention!
After optional blower has been installed use the following
steps to properly align the upper louver and the reflector with the
heat shield.
A. When replacing upper louver, be sure the bottom lip of upper
louver goes behind the heat shield.
B. When replacing reflector, be sure the top lip of reflector goes
in front of the heat shield.
Excessive Blower Wheel Noise
ATTENTION!
If your blower assembly develops a squeal, hum or
grinding noise, it indicates dirt or debris on shaft of blower wheel.
Use the following steps to clean shaft of blower wheel.
1. Remove red rubber grommet with brass bushing or black
rubber grommet with brass bushing from end of blower wheel
shaft opposite motor.
2. Clean blower wheel shaft with cotton cloth.
3. Place 1 or 2 drops of all purpose oil on END of blower wheel
shaft.
4. Replace red rubber grommet with brass bushing or black rubber
grommet with brass bushing onto end of blower wheel shaft.
Attention:
The red rubber grommet with brass bushing or the
black rubber grommet with brass bushing must “snap-back”
into position.
5. Cleaning of blower wheel shaft is completed.
SRB-18T
for Unvented Room Heater SR-18T
SR-18T SHOWN
OPTIONAL BLOWER INSTALLATION INSTRUCTIONS
