OPTIONAL BLOWER INSTALLATION INSTRUCTIONS
for Unvented Room Heaters
INSTALLING OPTIONAL BLOWER SRB-18T OR SRB-30T
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
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 main burner. 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 insulation on cord set to (1) socket terminal on fan control wire harness.
9.Attach (1) pin terminal from black (neutral) wire, ribbed insulation 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
15.If heater was removed from the wall, in order to install
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 grommetwithbrassbushingontoendofblowerwheelshaft.Attention: The red rubber grommet with brass bushing or the black rubber grommet with brass bushing must
5.Cleaning of blower wheel shaft is completed.
| SET | HOLE | IN |
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CORD | K |
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BAC |
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CASING |
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HEAT SHIELD
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| Y) |
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| BRACKET | (BF |
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| W | |
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| CRE | |
NCONTROL |
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| E S |
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D | WIR |
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FA |
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| GROUN |
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NCONTROL |
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FA |
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| SARE | Y | |
RAND | LOUVER | |||
| ASSEMBL | |||
TO |
| CASING |
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REFLEC | FROM |
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REMOVED |
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Page 17 |