Empire Comfort Systems RH-50, RH-50C, RH-65, RH-65C, FRB-3 Installation Instructions Manual
OPTIONAL BLOWER ASSEMBLY
INSTALLATION INSTRUCTIONS
R-2606
EFFECTIVE DATE OCTOBER, 2001
INSTRUCTIONS MUST BE LEFT WITH THE OWNER FOR FUTURE REFERENCE AFTER INSTALLATION
OPTIONAL BLOWER
FRB-3
Vented Room Heaters
Models RH-50 and RH-65
RH-50C and RH-65C
Figure 1
Installing Optional Blower
1. Remove rear shield (2 screws) and bottom reflector (4 screws).
(See Figure 1)
2. Align blower cushion with bottom assembly air discharge
opening. Foil face side of blower cushion should be placed
upward.
3. Align blower housing with blower cushion and use two, #10
x 1/2" (13mm )hex-head screws to attach blower housing to
bottom assembly. (See Figure 2)
4. Save bottom reflector and rear shield (removed in Step 1) in the
event the blower housing is removed from room heater.
Attention! Bottom reflector and rear shield must be attached
to bottom assembly whenever the blower housing is removed
from the room heater and the room heater is in operation.
5. Remove switch box cover from the switch box by removing
the #8 x 1/4" (6mm) hex-head screw.
6. There are two screw holes on the lower back of the combustion chamber. Use only the left screw hole for mounting.
7. With the switch box perpendicular to the combustion chamber,
align the round clearance hole on the switch box with the
left screw hole on the combustion chamber. (See Figure 3)
8. Attach switch box to the combustion chamber using the #10
x 1/2" (13mm) hex- head screw provided.
9. Attach switch box cover to the switch box by using the #8
x 1/4" (6mm) hex- head screw. (See Figure 4)
Figure 2
Figure 3
R-2606-1-1001 Page 1
Figure 4
Attention: Wiring harness on blower is factory assembled and
installed. If wiring harness becomes disassembled use the following steps to reassemble the wiring harness.
1. Attach (1) pin terminal from black (hot) wire, smooth insulation
on cord set to (1) socket terminal on fan control assembly.
2. Attach (1) pin terminal from black (neutral) wire, ribbed insu-
lation on cord set to (1) socket terminal from white (neutral)
wire on motor.
3. Attach (1) pin terminal on fan control assembly to (1) socket
terminal from black (hot) wire on motor.
4. Attach green ground wire beneath one of the #10 x 1/2" (13mm)
screws on the blower housing.
Fan Control
The automatic fan control is located in the switch box. The switch
box is attached to the front of the blower assembly. The switch
box is adjacent to the combustion chamber. The fan control is a
non-adjustable automatic type. The fan control will require between
5 and 10 minutes of main burner operation before the fan control
"closes" and activates the blower. The blower will continue to run
between 5 and 10 minutes after the main burner shuts off, before
the fan control "opens" and deactivates the blower.
Wiring
The appliance, when installed, must be electrically grounded in
accordance with local codes or, in the absence of local codes,
with the National Electrical Code, ANSI/NFPA 70 or Canadian
Electrical Code, CSA C22.1, if an external electrical source is
utilized. This appliance is equipped with a three-prong [grounding] plug for your protection against shock hazard and should be
plugged directly into a properly grounded three-prong receptacle.
Do not cut or remove the grounding prong from this plug. For
an ungrounded receptacle, an adapter, which has two prongs
and a wire for grounding, can be purchased, plugged into the
ungrounded receptacle and its wire connected to the receptacle
mounting screws. With this wire completing the ground, the
appliance cord plug can be plugged into the adapter and be
electrically grounded. A 7/8" (22mm) hole is provided in the
junction box for use with a conduit connector if local codes
require this type of protection.
Wiring Diagram
Index Part
No. No. Description
1 11727 Blower Housing and Chute Assembly
2 9120106 Fan Control
3 RH-863 Switch Box
4 DV-807 Switch Box Cover
5 R-2091 Wire Assembly
6 642031 Blower Wheel
7 11728 Motor Mounting Plate
8 632016 Motor Cushion
9 R-2605 Motor
10 8720161 Strain Relief Bushing
11 R-2099 Cord Set
12 RH-138 Blower Cushion
If any of the original wire as supplied with the appliance must
be replaced, it must be replaced with type 125°C wire or its
equivalent.
CAUTION: Label all wires prior to disconnection when
servicing controls. Wiring errors can cause improper
and dangerous operation. Verify proper operation after
servicing.
Warning:
Unplugging of blower accessory will not stop the heater from
cycling. To shut heater off:
1. Turn temperature dial or thermostat to lowest setting.
2. Turn knob on gas control to
"OFF", depressing slightly.
Do not force.
Cleaning
The blower wheel will collect lint and could require cleaning once
a year. If the air output decreases or the noise level increases, it
indicates a dirty wheel. Complete removal of the wheel and scrubbing it with a brush under flowing water is recommended.
Oiling
The blower motor has an oil hole located on each end of the motor. Use #20 motor oil only. It is best to oil the motor several
times during the heating season using 2 or 3 drops each time.
If the motor fails to start and hums, it could be a tight bearing
due to lack of oil. This may be corrected by pouring kerosene
in the oil holes, allowing to stand for a few hours and then oiling properly.
Page 2
Empire Comfort Systems, Inc. Nine Eighteen Freeburg Ave. Belleville, Illinois 62222-0529
R-2606-1-1001
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