FBB4 Optional Variable Speed Blower Installation. Empire Comfort Systems DVP42FP731P-1, DVP36FP31N-1, DVP48FP9(1,3)(N,P)-1, DVP36FP73P-1, P)-1, DVP48FP730N-1, DVP42FP9(1,3)(N,P)-1, DVP36FP72P-2, DVP42FP933P-1, DVP48FP931N-1

FBB4 OPTIONAL VARIABLE SPEED BLOWER INSTALLATION

Attention: Install blower assembly before connecting gas inlet supply line

Note: Junction box on right side of fireplace must be pre-wired at time of fireplace installation for use with blower assembly.

It is recommended that an ON/OFF wall switch be installed that will activate the power supply to the furnace by a qualified electrician.

1. If installed, turn OFF gas supply to fireplace.

2. If applicable, turn OFF electric supply to fireplace.

3. Lower bottom louver on fireplace.

4. Refer to page 51, "Junction Box Wiring Installation

Instructions" to complete wiring of junction box.

Attention: If installed, do not damage gas inlet supply line when blower assembly is inserted into fireplace. If necessary, remove gas inlet supply line.

5. Insert blower assembly into interior, bottom of fireplace.

Position blower assembly behind gas valve, align notch on back of blower assembly with center screw on fireplace back and push blower assembly against fireplace back. The magnets on the back and bottom of blower assembly will sufficiently hold blower assembly in place.

6. Position speed control box to the right of gas valve. Attach speed control box to bottom of fireplace. The magnets on bottom of speed control box will sufficiently hold speed control box in place.

7. With base (flush face) of fan control switch facing upward, insert base of fan control switch under the mounting tabs on valve bracket. The base (flush face) of fan control switch must be in contact with bottom of firebox.

8. Insert power cord plug into junction box.

9. Close bottom louver on fireplace.

10. Installation of FBB4 optional variable speed blower assembly is completed.

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, 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 screw. With this wire completing the ground, the appliance cord plug can be plugged into the adapter and be electrically grounded.

Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

Blower Motor

The blower motor does not have oiling holes. Do not attempt to oil the blower motor.

Blower Wheels

The blower wheels will collect lint and could require periodic cleaning. If the air output decreases or the noise level increases, it indicates a dirty blower wheel. Remove fan and clean blower wheels.

Warning: Unplugging of blower accessory will not stop the heater from cycling. To turn off gas to the heater (millivolt model): push in gas control knob slightly and turn clockwise to "OFF." Do not force. To turn off gas on direct ignition model, turn gas line valve to "OFF."

FAN SWITCH

FAN KIT

VALVE BRACKET

SEE NOTE*

JUNCTION BOX

SPEED CONTROL

SWITCH HOLDER

(TOP OF VALVE BRACKET)

*Note: Refer to Junction Box wiring instructions on page 51 for proper operation.

17375-10-0706 Page 49

FBB4 OPTIONAL VARIABLE SPEED BLOWER INSTALLATION

1

2

3

4

FBB4 B L O W E R A S S E M B LY

COMPLETE

R7649 FAN CONTROL

R4192 SPEED CONTROL KNOB

R4186 SPEED CONTROL

Page 50

JUNCTION BOX

FAN

110 VOLT AC

BLACK

FAN

SWITCH

WHITE

SPEED

CONTROL

GROUND

17375-10-0706