Desa UNVENTED (VENT-FREE) PROPANE/LP GAS LOG HEATER Refer to Air for Combustion and Venti

Page 17

OWNER’S MANUAL

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Burner does not light after ODS/pilot is lit

1.

Inlet gas pressure is too low

1.

Contact local natural gas company

 

2.

Burner orifice clogged

2.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 15) or replace burner orifice

 

3.

Burner orifice diameter is too small

3.

Replace burner orifice

 

 

 

 

 

Delayed ignition burner

1.

Manifold pressure is too low

1.

Contact local propane/LP gas company

 

2.

Burner orifice clogged

2.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 15) or replace burner orifice

 

 

 

 

 

Burner backfiring during combustion

1.

Burner orifice is clogged or damaged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 15) or replace burner orifice

 

2.

Damaged burner

2.

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas regulator

 

 

 

 

 

Slight smoke or odor during initial opera-

1.

Not enough air

1.

Check burner for dirt and debris. If

tion

 

 

 

found, clean burner (see Cleaning and

 

 

 

 

Maintenance, page 15)

 

2.

Gas regulator defective

2.

Replace gas regulator

 

3.

Residues from manufacturing processes

3.

Problem will stop after a few hours of

 

 

and logs curing

 

operation

 

 

 

 

 

Heater produces a whistling noise when

1.

Turning control knob to HI position

1.

Turn control knob to LO position and

burner is lit

 

when burner is cold

 

let warm up for a minute

 

2.

Air in gas line

2.

Operate burner until air is removed from

 

 

 

 

line. Have gas line checked by local

 

 

 

 

natural gas company

 

3.

Air passageways on heater blocked

3.

Observe minimum installation clear-

 

 

 

 

ances (see pages 6 through 9)

 

4.

Dirty or partially clogged burner orifice

4.

Clean burners (see Cleaning and Mainte-

 

 

 

 

nance, page 15) or replace burner orifice

 

 

 

 

 

Moisture/condensation noticed on windows

1.

Not enough combustion/ventilation air

1.

Refer to Air for Combustion and Venti-

 

 

 

 

lation requirements (page 3 through 5)

Continued

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Contents What to do if YOU Smell GAS FLAME-MAXDesign Log DesignVanguard FLAME-MAX Unvented PROPANE/LP GAS LOG Heater Safety InformationProduct Identification Product FeaturesLocal Codes UnpackingUnusually Tight Construction Determining AIR Flow for Heater LocationConfined and Unconfined Space Determining if You Have a Confined or Unconfined SpaceVentilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors Smaller than that defined as anInstallation InstallationCheck GAS Type Minimum Fireplace Clearance To Combustible MaterialsMinimum Non Combustible Material Clearances If Not Using MantelIf Using Mantel Determing Minimum Mantel Clearance Determining Minimum Mantel Clear- ance When using a HoodMantel Clearances Installing Heater Base Assembly Installing Damper Clamp Accessory for Vented OperationInstallation Items Needed Floor ClearancesGolden Oak and Birch Model Chassis Connecting to GAS SupplyStandard Oak Log Chassis External Regulator With Vent Pointing Down Pressure Testing Gas Supply Piping System Pressure Testing Heater Gas ConnectionsChecking GAS Connections Test Pressures Equal To or Less Than 1/2 PsigFor Golden Oak or Birch Models Installing LogsFor Vintage Oak Model Lighting Instructions For Your Safety Read Before LightingOperating Heater Inspecting Burners Cleaning and MaintenanceObserved Problem Possible Cause Remedy TroubleshootingRefer to Air for Combustion and Venti Gas leak. See Warning statement at TopReplacement Parts SpecificationsAccessories Technical ServiceODS Pilot Illustrated Parts BreakdownFLAME-MAX Vintage OAK Models VYS18P and VYS24P KEY Part Number for VYS18P VYS24P Description QTY Parts List1A* 1A Parts List Warranty Information
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