Desa UNVENTED (VENT-FREE) PROPANE/LP GAS LOG HEATER installation manual Connecting to GAS Supply

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VANGUARD FLAME-MAX™

UNVENTED PROPANE/LP GAS LOG HEATER

INSTALLATION

Continued

1.Apply pipe joint sealant lightly to male threads of the fitting to be threaded into gas regulator. Connect approved flex- ible gas hose to gas regulator of heater (see Figure 11).

IMPORTANT: Hold gas regulator with wrench when connecting flexible gas hose.

2.Locate two masonry screws in hard- ware package.

3.Place heater base in fireplace.

4.Place logs in their proper position on heater base.

5.Center heater base and logs front-to- back and side-to-side in fireplace.

6.Carefully remove logs without moving heater base.

7.Mark screw locations through one hole on each side of the mounting bracket (see Figure 12). If installing in a brick- bottom fireplace, mark screw locations in mortar joint of bricks.

8.Remove heater base from fireplace.

9.Drill holes at marked locations using 3/16" drill bit.

10.Attach base assembly to fireplace floor using two masonry screws (in hardware package).

11.Connect to gas supply. See Connect- ing To Gas Supply, column 3.

12.Replace logs on heater base.

Heater Gas

Regulator

Standard Oak

Log Chassis

Masonry Screw

Bracket with

Screw Holes

Golden Oak and Birch

Model Chassis

Masonry Screw

Bracket with

Screw Holes

CONNECTING TO GAS SUPPLY

NOTICE: A qualified service per- son must connect heater to gas supply. Follow all local codes.

CAUTION: Never connect heater directly to the propane supply. This heater requires an external regulator (not supplied). Install the external regulator be- tween the heater and propane supply.

Installation Items Needed

Before installing heater, make sure you have the items listed below.

external regulator (supplied by installer, see above)

piping (check local codes)

sealant (resistant to LP gas)

manual shutoff valve *

test gauge connection *

sediment trap

tee joint

pipe wrench

*An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Pur- chase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessories, page 19.

Figure 12 - Attaching Base Assembly to

Fireplace Floor

Fitting

Flexible Gas Hose (if allowed by local codes)

Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator

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Contents Design FLAME-MAXWhat to do if YOU Smell GAS Log DesignSafety Information Vanguard FLAME-MAX Unvented PROPANE/LP GAS LOG HeaterLocal Codes Product FeaturesProduct Identification UnpackingConfined and Unconfined Space Determining AIR Flow for Heater LocationUnusually Tight Construction Determining if You Have a Confined or Unconfined SpaceVentilation Air From Outdoors Ventilation AIRVentilation Air From Inside Building Smaller than that defined as anCheck GAS Type InstallationInstallation Minimum Fireplace Clearance To Combustible MaterialsIf Using Mantel If Not Using MantelMinimum Non Combustible Material Clearances Mantel Clearances Determining Minimum Mantel Clear- ance When using a HoodDeterming Minimum Mantel Clearance Installation Items Needed Installing Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly Floor ClearancesStandard Oak Log Chassis Connecting to GAS SupplyGolden Oak and Birch Model Chassis External Regulator With Vent Pointing Down Checking GAS Connections Pressure Testing Heater Gas ConnectionsPressure Testing Gas Supply Piping System Test Pressures Equal To or Less Than 1/2 PsigFor Vintage Oak Model Installing LogsFor Golden Oak or Birch Models Operating Heater For Your Safety Read Before LightingLighting Instructions Cleaning and Maintenance Inspecting BurnersTroubleshooting Observed Problem Possible Cause RemedyRefer to Air for Combustion and Venti Top Gas leak. See Warning statement atAccessories SpecificationsReplacement Parts Technical ServiceFLAME-MAX Vintage OAK Models VYS18P and VYS24P Illustrated Parts BreakdownODS Pilot Parts List KEY Part Number for VYS18P VYS24P Description QTY1A* 1A Parts List Warranty Information