Vanguard Managed Solutions MBDV41, MBDV37 Blower Assembly and Operation, Installing GA3700 Blower

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OWNER’S MANUAL

FIREPLACE INSTALLATION

Continued

BLOWER ASSEMBLY AND OPERATION

Note: The blower is preinstalled in this fireplace. Verify blower assembly place- ment was not altered during shipping and speed control is mounted to bracket.

NOTICE: If installing blower in an existing fireplace with gas con- nections, shut off gas supply and disconnect heater from gas sup- ply. Contact a qualified service person to do this.

Installing GA3700 Blower

(Some Models Have Blower Assembly Preinstalled)

IMPORTANT: For clarity, gas valve assem- bly and grate/burner assembly are not shown in Figures 31 through 33. They will, how- ever, be in your fireplace when you are in- stalling the blower. Also for clarity the fire- box is shown with dotted lines.

1.Open lower louver panel or remove for easier access.

2.Place the blower against the lower rear wall of firebox outer wrapper with the exhaust port directed upward. Align the holes in the top mounting tabs of blower with holes in wall of wrapper (see Figure 31). Using the two screws provided, mount blower and tighten screws securely.

3.Be sure to securely attach all wire ter- minals to terminals on blower motor and that the screw retaining the green ground wire is tight.

4.Remove screws securing the plate con- taining the ON/OFF switch to the bot- tom of the firebox and set aside.

5.Place speed control against back of this plate and push the plastic control shaft through opening (see Figure 32).

6.While supporting speed control, secure con- trol shaft with lock nut by pushing and turn- ing lock nut with pliers clockwise until tight against the plate. Place control knob pro- vided onto shaft (see Figure 32).

7.Replace plate containing switches and tighten screws securely.

8.Plug in blower power cord.

a.If your fireplace system is installed as a freestanding unit with an ac- cessory mantel, determine whether the power cord will exit the left side or the right side of the firebox. In- stall one plastic bushing provided into the 1 1/2" hole in the outer cas- ing through which the power cord will exit. Install the second plastic bushing provided into the floor sup- port bracket if exiting through the right side (see Figure 33). Route power cord through (both) plastic bushing(s) and plug the power cord into a properly grounded 3-prong wall receptacle near the firebox.

b.If your fireplace system installation is recessed and/or pre-wired, a qualified installer must make all elec- trical connections for the outlet kit included with the fireplace.

Lower Rear

Wall of

Firebox

Wrapper

Lower Louver

Blower Panel

Screws

Exhaust Port

Top

Mounting

Tab

Figure 31 - Mounting Blower to Firebox

9.Check to make sure that the power cord is completely clear of the blower wheel and that there are no other foreign ob- jects in blower wheel. Turn blower on and check for operation. Turn blower off by rotating knob fully counterclock- wise before continuing.

WARNING: Never touch the blower wheel while in operation.

WARNING: Failure to position the parts in accordance with sup- plied diagrams or failure to use only parts specifically approved with this heater may result in dam- age or personal injury.

10.Connect or reconnect gas supply to fire- place per Connecting Fireplace to Gas Supply on page 20 of this manual.

WARNING: A qualified ser- vice person must connect fire- place to gas supply. Follow all local codes.

Control Knob

Speed Control

Control Shaft

Locknut

Figure 32 - Attaching Speed Control to Firebox

Blower Speed Control Bracket

Wiring

Diagram

Plastic Bushing

Figure 33 - Installing Plastic Bushing

Continued

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Contents For Your Safety OWNER’S Operation and Installation ManualCheck Local Codes Prior to Installation MBDV37 and MBDV41Safety Information Local Codes Product FeaturesGlossary Terms Product IdentificationClearances PRE-INSTALLATION PreparationLocation and Space Requirements Framing and FinishingLocation of Vent Termination PRE-INSTALLATION Preparation General VentingGeneral Venting Installation Planning Venting InstallationInstallation Precautions Installing Vent System in a Chase Installation for Horizontal TerminationVent Opening Requirements Horizontal Venting Horizontal Termination ConfigurationsVenting with Two 90 Elbows Flat Ceiling Installation Installation for Vertical TerminationCathedral Ceiling Installation Connect a section of pipe and extend up through the holeVenting with One 90 Elbow Vertical Termination ConfigurationsVertical Venting Vertical Rigid Venting Configuration Using Two 90 ElbowsParts Lists for Venting Kits and Components High Altitude InstallationVanguard Rigid Venting Vanguard Flexible VentingElectrical Hookup for Blower Accessory Fireplace InstallationCheck GAS Type Number Description Available from Desa InternationalInstalling GA3700 Blower Blower Assembly and OperationSome Models Have Blower Assembly Preinstalled Open lower louver panel or remove for easier accessInstalling Receiver Wall Switch InstallationWireless HAND-HELD Remote Control Ghrc Series Installation Installation Items Needed Installing GAS Piping to Fireplace LocationGAS Supply Testing Connecting Fireplace to GAS SupplyInstallation Items Needed Pressure Testing Gas Supply Piping SystemClose equipment shutoff valve see Fig- ure Pressure Testing Fireplace Gas ConnectionsRemoving/Replacing Glass Door REMOVING/REPLACING Glass DoorReplace glass door see Installing Optional Brick Liner D8037A/D8041Tighten all bracket screws Fireplace Models MBDV37 and MBDV41 Installing LOGS, Lava Rock and Glowing EmbersOperating Guidelines and Maintenance Instructions Manual Lighting Procedure To Appliance For Your Safety Read Before LightingOperating Fireplace Lighting To Turn OFF GASInspecting Burners Pilot AssemblyRemote Operation Operating BlowerGlass Door Cleaning and MaintenancePilot and Burners LogsMain Burner Orifice and Pilot Orifice Before YOU BeginFinal Preparation GAS Control Valve ConversionObserved Problem Possible Cause TroubleshootingParts, Trying to light the fireplacePilot’s millivoltage OrificeBurner is lit Delayed ignition burner Manifold pressure is too lowPane/LP or natural gas company Glass soots Flame impingement on logsAbove Gas leak. See Warning statementTechnical Service Replacement Parts Wiring DiagramService Hints SpecificationsMBDV37 MBDV41 Illustrated Parts BreakdownDIRECT-VENT Fireplace MBDV37 MBDV41 Parts ListWall Mount ON/OFF Switch KIT GWMS2 AccessoriesCleaning KIT GCK Brass Louver KIT106497 Warranty Information