Vanguard Managed Solutions FLAME-MAX Accessories, Service Hints, Technical Service

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OWNER’S MANUAL

ACCESSORIES

Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA International’s Parts Department at 1-800-972-7879 for referral information. You can also write to the ad- dress listed on the back page of this manual.

MANUAL SHUTOFF VALVE - GA5010

For all models. Manual shutoff valve with 1/8" NPT tap. Fits 1/2" NPT pipe.

FIREPLACE HOOD

Black - GA6050

Brass - GA6052

Antique Brass - GA6053

For all models. Helps deflect heat away from mantel or wall above fireplace. Fits openings 28" to 48" wide.

DAMPER CLAMP - GA6080

(Not Shown)

Permanently opens chimney flue damper for vented operation. Can be used only with non-thermostat models.

LAVA ROCK - GA6060

(Not Shown)

For all models. Order when additional rock is desired. (3 lb. bag)

SERVICE HINTS

When Gas Pressure Is Too Low

•pilot will not stay lit

•burners will have delayed ignition

•heater will not produce specified heat

When Gas Quality Is Bad

•pilot will not stay lit

•burners will produce flames and soot

•heater will backfire when lit

You may feel your gas pressure is too low or gas quality is bad. If so, contact your local natural gas supplier.

TECHNICAL

SERVICE

You may have further questions about in- stallation, operation, or troubleshooting.

If so, contact DESA International’s Techni- cal Service Department at 1-800-DESA LOG (1-800-337-2564).

You can also visit DESA International’s technical services web site at www.desatech.com.

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Contents Patent Pending What to do if YOU Smell GASVanguard FLAME-MAX Unvented Natural GAS LOG Heater Safety InformationLocal Codes Unpacking Product FeaturesProduct Identification Providing Adequate Ventilation AIR for Combustion and VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining if You Have a Confined or Unconfined Space AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation Air From Inside Ventilation AIRBuilding Ventilation Air From OutdoorsMinimum Wall and Ceiling Clearances see Figure InstallationCheck GAS Type If Not Using Mantel If Using MantelMinimum Noncombustible Material Clearances Eration,Mantel Clearances Determining Minimum Mantel Clearance When Using a HoodFloor Clearances Determining Minimum Mantel ClearanceInstallation Items Needed Installing Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly Golden Oak Birch Model Chassis Connecting to GAS SupplyVintage Oak Log Chassis Pressure Testing Heater Gas Connections Pressure Testing Gas Supply Piping SystemChecking GAS Connections Test Pressures In Excess Of 1/2 PsigInstalling Vintage Oak One Installing LogsLighting Instructions For Your Safety Read Before LightingOperating Heater Variable Control Operation Manual Lighting ProcedureTo Turn OFF GAS To Appliance Shutting Off HeaterThermostat Control Operation Inspecting BurnersPilot Flame Pattern Burner Primary AIR HolesReplacement Parts Cleaning and MaintenanceObserved Problem Possible Cause Remedy TroubleshootingMaintenance, Gas leak. See Warning statement at TopFor Masonry and FACTORY-BUILT Metal Fireplace Optional Positioning of Thermostat Sensing BulbFLAME-MAXVINTAGE OAK LOG Models VYS18NA, VYS24NA VYS30NA Illustrated Parts BreakdownVYS18NA VYS24NA VYS30NA Parts ListODS Pilot VYD18NA, VYBD18N VYD24NA, VYBD24N VYD30NA, VYBD30N VYD36N 511 Part Number for VYD18NTA VYD24NTA VYD30NTA VYD18NTA VYD24NTA VYD30NTASpecifications Technical Service AccessoriesService Hints Warranty Information