Vanguard Managed Solutions MBDV41, MBDV37 Installing GAS Piping to Fireplace Location

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OWNER’S MANUAL

FIREPLACE INSTALLATION

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INSTALLING GAS PIPING TO FIREPLACE LOCATION

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

CAUTION: For propane/LP units, never connect heater di- rectly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane/LP supply.

Installation Items Needed

Before installing fireplace, make sure you have the items listed below:

• external regulator (supplied by installer)

• piping (check local codes)

• sealant (resistant to propane/LP gas)

• equipment shutoff valve *

• test gauge connection *

• sediment trap

CAUTION: Use only new, black iron or steel pipe. Inter- nally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" diameter or greater to allow proper gas volume to fireplace. If pipe is too small, undue loss of pressure will occur.

Installation must include an equipment shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from fireplace (see Figure 40).

Propane/LP

Supply Tank

External

Regulator

Vent

Pointing

Down

Figure 39 - External Regulator with Vent Pointing Down (Propane/LP Only)

IMPORTANT: Install main gas valve (equipment shutoff valve) in an accessible location. The main gas valve is for turning on and shutting off the gas to the appliance.

Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces.

Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged fireplace valves.

CAUTION: Use pipe joint seal- ant that is resistant to liquid pe- troleum (LP) gas.

We recommend that you install a sediment trap/drip leg in supply line as shown in Figure 40. Locate sediment trap/drip leg where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap/drip leg where trapped matter is not likely to freeze. A sediment trap traps moisture and contami- nants. This keeps them from going into fireplace gas controls. If sediment trap/drip leg is not installed or is installed wrong, fireplace may not run properly.

tee joint

pipe wrench

• approved flexible gas line with gas con-

 

nector (if allowed by local codes) (not

 

provided)

*An CSA/AGA design-certified equip- ment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connec- tion. Purchase the CSA/AGA design-certi- fied equipment shutoff valve from your dealer.

CSA/AGA Design-Certified Equipment Shutoff Valve with 1/8" NPT Tap*

Approved Flexible

Gas Line

3" Minimum

Natural - From Gas Meter (5" W.C. to 10.5" W.C. Pressure)

Propane/LP - From External Regulator (11" W.C. to 14" W.C. Pressure)

For propane/LP connection only, the in- staller must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 39. Pointing the vent down protects it from freezing rain or sleet.

Pipe Nipple Cap Tee Joint

Sediment Trap/Drip Leg

Figure 40 - Gas Connection

*The CSA/AGA design-certified equipment shutoff valve may be supplied with the appliance or you can purchase it from your dealer.

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Contents MBDV37 and MBDV41 OWNER’S Operation and Installation ManualFor Your Safety Check Local Codes Prior to InstallationSafety Information Product Identification Product FeaturesLocal Codes Glossary TermsFraming and Finishing PRE-INSTALLATION PreparationClearances Location and Space RequirementsLocation of Vent Termination PRE-INSTALLATION Preparation General VentingGeneral Venting Installation Precautions Venting InstallationInstallation Planning Installing Vent System in a Chase Installation for Horizontal TerminationVent Opening Requirements Horizontal Venting Horizontal Termination ConfigurationsVenting with Two 90 Elbows Connect a section of pipe and extend up through the hole Installation for Vertical TerminationFlat Ceiling Installation Cathedral Ceiling InstallationVenting with One 90 Elbow Vertical Termination ConfigurationsVertical Venting Vertical Rigid Venting Configuration Using Two 90 ElbowsVanguard Flexible Venting High Altitude InstallationParts Lists for Venting Kits and Components Vanguard Rigid VentingNumber Description Available from Desa International Fireplace InstallationElectrical Hookup for Blower Accessory Check GAS TypeOpen lower louver panel or remove for easier access Blower Assembly and OperationInstalling GA3700 Blower Some Models Have Blower Assembly PreinstalledWireless HAND-HELD Remote Control Ghrc Series Installation Wall Switch InstallationInstalling Receiver Installation Items Needed Installing GAS Piping to Fireplace LocationPressure Testing Gas Supply Piping System Connecting Fireplace to GAS SupplyGAS Supply Testing Installation Items NeededClose equipment shutoff valve see Fig- ure Pressure Testing Fireplace Gas ConnectionsRemoving/Replacing Glass Door REMOVING/REPLACING Glass DoorTighten all bracket screws Installing Optional Brick Liner D8037A/D8041Replace glass door see Fireplace Models MBDV37 and MBDV41 Installing LOGS, Lava Rock and Glowing EmbersOperating Guidelines and Maintenance Instructions Lighting To Turn OFF GAS To Appliance For Your Safety Read Before LightingManual Lighting Procedure Operating FireplaceOperating Blower Pilot AssemblyInspecting Burners Remote OperationLogs Cleaning and MaintenanceGlass Door Pilot and BurnersMain Burner Orifice and Pilot Orifice Before YOU BeginFinal Preparation GAS Control Valve ConversionObserved Problem Possible Cause TroubleshootingOrifice Trying to light the fireplaceParts, Pilot’s millivoltageGlass soots Flame impingement on logs Delayed ignition burner Manifold pressure is too lowBurner is lit Pane/LP or natural gas companyAbove Gas leak. See Warning statementSpecifications Replacement Parts Wiring DiagramTechnical Service Service HintsMBDV37 MBDV41 Illustrated Parts BreakdownDIRECT-VENT Fireplace MBDV37 MBDV41 Parts ListBrass Louver KIT AccessoriesWall Mount ON/OFF Switch KIT GWMS2 Cleaning KIT GCK106497 Warranty Information