®

MDVFST DIRECT-VENT GAS FIREPLACE

INSTALLATION

WARNING: Disconnect all electrical power to the fireplace. Be careful of burrs and sharp edges.

BLOWER ASSEMBLY

NOTE: The blower is preinstalled in this fireplace. Verify blower assembly place- ment during installation. The blower may have shifted during shipping.

1.To remove lower louver, pull both top spring latches toward the center of the appliance at the same time until they are disengaged from the locating holes. Repeat for bottom spring latches and pull louver outward.

2.Place blower assembly so it rests flush against the inside wall on the flue exit side of the firebox (see Figure 29). There are four magnets on the bottom of the blower assembly that will keep the blower in place on firebox bottom. Note: If the blower kit is not installed flush against the inside side wall of the fireplace, the circulating air from the blower system will not flow properly.

Flue

PeninsulaExit or See-Thru

Fireplace

Installed

Inside

Wall

Blower

Assembly

Blower Center to

Firebox Bottom

Center Along Inside

Wall by Flue Exit

Figure 29 - Blower Assembly Placement

BLOWER SPEED CONTROL

1.Place speed control switch assembly on the bottom of the inside of the firebox (see Figure 30). The assembly is equipped with magnets on the left and right to prop- erly anchor it to the firebox.

2.Plug blower with speed control assem- bly into a power source. Keep hands clear of fan when running.

Glass

Spring

Latch

Speed Control

Magnet

Figure 30 - Blower Speed Control Location

WIRING DIAGRAM

 

 

Wire Connectors

 

 

3 Places

BLOWER

BLK (16 ga.)

BLOWER

 

BLK (16 ga.)

SPEED

ASSEMBLY

 

CONTROL

 

 

Figure 31 - Wiring Diagram for Blower Assembly

BLOWER SPEED CONTROL OPERATION

1.To operate blower, turn the blower speed control knob clockwise to the “ON” po- sition (see Figure 32). This will be the highest blower speed. Continue turning knob clockwise to reduce blower speed. Turn knob only within the specified range (1/4 revolution, see Figure 32).

2.To turn blower off, turn blower speed control knob counterclockwise until it clicks into the “OFF” position. You must turn until knob clicks for the unit to be completely off.

High Speed

ON/OFF

1/4 Revolution

Low

Speed

Magnets

Figure 32 - Blower Speed Control

WALL SWITCH INSTALLATION

Since the MDVFST model uses a valve that operates on millivolt current generated by the pilot, a wall switch (not included) may be used to activate the gas control valve without the use of normal household elec- tricity. A hand-held, ON/OFF remote con- trol is standard with this unit. Wall switch is optional. If the wall switch is installed, the hand-held, ON/OFF remote cannot be used.

1.To remove the louvers, simultaneously pull both top end spring latches towards the center of the appliance until they are disengaged from locating holes. Repeat for bottom end spring latches and pull outward. Reverse the proce- dure to install louvers back onto the appliance (see Figure 33).

2.Connect the 18 ga. wires from wall switch (not included) to the gas con- trol valve and microswitch, as shown in Figure 34, page 15.

WARNING: Do not wire remote wall switch to main power supply (Standard120vhouseholdcurrent).

Glass

Locating

Holes

 

Spring

Latch

Figure 33 - Removing Louver

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Desa MDVFST Blower Assembly, Wiring Diagram, Blower Speed Control Operation, Wall Switch Installation

MDVFST specifications

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