Desa 103426-01 Unvented Natural Gas Log Heater, Troubleshooting, Continued, Observed Problem

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ing Gas Connections, page 11)

UNVENTED NATURAL GAS LOG HEATER

TROUBLESHOOTING

Continued

WARNING: If you smell gas

•Shut off gas supply.

•Do not try to light any appliance.

•Do not touch any electrical switch; do not use any phone in your building.

•Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

•If you cannot reach your gas supplier, call the fire department.

IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with combustion air and create odors. These odors will disappear over time.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Heater produces a clicking/ticking noise just after burners are lit or shut off

1.Metal expanding while heating or con- tracting while cooling

1.This is common with most heaters. If noise is excessive, contact qualified ser- vice person

Heater produces unwanted odors	1.	Heater burning vapors from paint, hair
		spray, glues, cleaners, chemicals, new
		carpet, etc. (See IMPORTANT state-
		ment above)
	2.	Gas leak. See Warning statement at
		top of page

1.Open window and ventilate room. Stop using odor causing products while heater is running

2.Locate and correct all leaks (see Check- ing Gas Connections, page 11)

Heater shuts off in use (ODS operates)	1.	Not enough fresh air is available	1.	Open window and/or door for ventila-
				tion
	2.	Low line pressure	2.	Contact local natural gas company
	3.	ODS/pilot is partially clogged	3.	Clean ODS/pilot (see Cleaning and
				Maintenance, page 17)

Gas odor even when control knob is in OFF	1.	Gas leak. See Warning statement at	1.	Locate and correct all leaks (see Check-
position		top of page		ing Gas Connections, page 11)
	2.	Control valve defective	2.	Replace control valve

Gas odor during combustion	1.	Foreign matter between control valve
		and burner
	2.	Gas leak. See Warning statement at
		top of page

1.Take apart gas tubing and remove for- eign matter

2.Locate and correct all leaks (see Check- ing Gas Connections, page 11)

Log set cycles to pilot, but room tempera- ture drops to a lower than ideal level before log set comes back on

1.Thermostat sensing bulb needs to be re- positioned

1.Reposition thermostat sensing bulb (see Instructions for Optional Positioning of Thermostat Sensing Bulb, page 21)

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103426

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Contents OWNER’S OPERATION AND INSTALLATION MANUAL where not prohibited by state or local codesDESA INTERNATIONAL —WHAT TO DO IF YOU SMELL GASWARNINGS SAFETY INFORMATIONUNVENTED NATURAL GAS LOG HEATER PRODUCT FEATURES Safety DevicePRODUCT IDENTIFICATION LOCAL CODESAIR FOR COMBUSTION AND VENTILATION PROVIDING ADEQUATE VENTILATIONDETERMINING AIR FLOW FOR HEATER LOCATION Unusually Tight ConstructionContinued VENTILATION AIRVentilation Air From Inside Building Ventilation Air From OutdoorsINSTALLATION INSTALLATION AND CLEARANCESIf Not Using Mantel CHECK GAS TYPEIf Using Mantel Mantel ClearancesDetermining Minimum Mantel Clearance INSTALLATIONFloor Clearances INSTALLATIONUNVENTED NATURAL GAS LOG HEATER ContinuedINSTALLING HEATER BASE ASSEMBLY Installation Items NeededINSTALLATION ContinuedCONNECTING TO GAS SUPPLY INSTALLATIONInstallation Items Needed UNVENTED NATURAL GAS LOG HEATERPressure Testing Gas Supply Piping System Pressure Testing Heater Gas ConnectionsCHECKING GAS CONNECTIONS Test Pressures In Excess Of 1/2 PSIGINSTALLING LOGS American Oak Design Models INSTALLATIONUNVENTED NATURAL GAS LOG HEATER ContinuedINSTALLING LOGS Split Oak Design Models INSTALLATIONFigure 22 - Installing Bottom Middle Log Figure 24 - Installing Top Log #4Thermostat-ControlledModels FOR YOUR SAFETY OPERATING HEATERREAD BEFORE LIGHTING LIGHTING INSTRUCTIONSMANUAL LIGHTING PROCEDURE Manually-ControlledModels FOR YOUR SAFETYThermostat Controlled Models TO TURN OFF GAS TO APPLIANCEINSPECTING BURNERS Manually-ControlledModelsVARIABLE CONTROL OPERATION PILOT FLAME PATTERNCLEANING AND MAINTENANCE FRONT BURNER FLAME PATTERNODS/PILOT AND BURNERS LOGSTROUBLESHOOTING OBSERVED PROBLEMPOSSIBLE CAUSE REMEDYTROUBLESHOOTING OBSERVED PROBLEMMaintenance, page ContinuedTROUBLESHOOTING OBSERVED PROBLEMMaintenance, page UNVENTED NATURAL GAS LOG HEATEROPTIONAL POSITIONING OF THERMOSTAT SENSING BULB For Masonry and Factory- built Metal FireplaceSPECIFICATIONS REPLACEMENT PARTSSERVICE HINTS TECHNICAL SERVICEACCESSORIES MANUAL SHUTOFF VALVE - GA5010BLACK FIREPLACE HOOD - GA6050 BRASS FIREPLACE HOOD - GA6052ILLUSTRATED PARTS BREAKDOWN4 Variable Manually Controlled Models VS18NVBCFS18NVB VS24NVB CFS24NVB VS30NVB CFS30NVB UNVENTED NATURAL GAS LOG HEATERPARTS LIST Variable Manually-ControlledSplit Oak ModelsPART NUMBER FOR VS18NVB/CFS18NVBILLUSTRATED PARTS BREAKDOWN UNVENTED NATURAL GAS LOG HEATERThermostat-ControlledSplit Oak Models PARTS LISTPART NUMBER FOR VS18NTAILLUSTRATED PARTS3 BREAKDOWN Variable Manually-Controlled Models VL18NV VL24NVVL30NV UNVENTED NATURAL GAS LOG HEATERVariable Manually-ControlledAmerican Oak Models PARTS LISTPART NUMBER FOR VL18NVUNVENTED NATURAL GAS LOG HEATER Page NOT A UPC LIMITED WARRANTY VENT-FREENATURAL GAS LOG HEATERSWARRANTY INFORMATION