Desa LSL18PT, LSL18NT, VSL18PT Slight smoke or odor during, Air passageways on heater, Blocked

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TROUBLESHOOTING

Continued

OBSERVED PROBLEM	POSSIBLE CAUSE		REMEDY

Yellow flame during burner	1. Not enough air		1.	Check burner for dirt and
combustion				debris. If found, clean burner
				(see Cleaning and Mainte-
	2.	Gas regulator defective		nance, page 17)
	2.	Gas regulator defective	2.	Replace gas regulator
	3.	Clogged or dirty burner	3.	Clean burner (see Cleaning
				and Maintenance, page 17)

Slight smoke or odor during	1. Residues from manufacturing		1.	Problem will stop after a few
initial operation		processes		hours of operation

Heater produces a whistling	1. Turning control knob to 5		1.	Turn control knob to 1 posi-
noise when burner is lit		position when burner is cold		tion and let warm up for a
	2.	Air in gas line		minute
	2.	Air in gas line	2.	Operate burner until air is
				removed from line. Have gas
				line checked by local natural
	3.	Air passageways on heater		or propane/LP gas company
	3.	Air passageways on heater	3.	Observe minimum installation
		blocked		clearances (see Figure 4, page 8)
	4.	Dirty or partially clogged	4.	Clean burner (see Cleaning
		burner oriﬁce		and Maintenance, page 17)
				or replace burner oriﬁce

White powder residue forming	1. When heated, vapors from		1.	Turn heater off when using
within burner box or on adjacent		furniture polish, wax, carpet		furniture polish, wax, carpet
walls or furniture		cleaners, etc. may turn into		cleaners or similar products
		white powder residue

Blower fan does not come on	1. Power cord not connected		1.	Connect power cord to 120V
	2.	No power to electric outlet		60Hz outlet
	2.	No power to electric outlet	2.	Have a qualiﬁed service per-
	3.	Time delay for thermal switch		son check for power at outlet
	3.	Time delay for thermal switch	3.	Wait 4 to 5 minutes with the
		to warm up		burner on
	4.	Bad switch	4.	Replace switch
	5.	Loose wire connection	5.	Reconnect wires

Heater produces a clicking/tick- ing noise just after burner is lit or shut off

1.Metal expanding while heat- ing or contracting while cooling

1.This is common with most heat- ers. If noise is excessive, contact qualiﬁed service person

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116292-01A

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Contents What to do if YOU Smell GAS Table of Contents Safety Information Product Features Local CodesProduct Identification UnpackingAIR for Combustion Ventilation Providing Adequate VentilationFollowing are excerpts from National Fuel Unusually Tight ConstructionDetermining FRESH-AIR Flow for Heater Location Determining if You Have a Conﬁned or Unconﬁned SpaceInstallation Ventilation AIRCheck GAS Type Ventilation Air From Inside BuildingThis heater is designed to be mounted on a wall Installation ItemsLocating Heater Installing Heater to Wall Attaching Mounting Bracket To Wall Is provided with heaterFor attaching mounting bracket to wall studs Placing Heater On Mounting BracketConnecting to GAS Supply Installing Bottom Mounting ScrewsImportant For natural gas, check gas line Tor damage could occurPropane/LP Checking GAS ConnectionsMin. Natural Gas Test Pressures In Excess Of 1/2 Psig 3.5 kPa Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaEquipment Open Shutoff Valve Closed Gas Meter EquipmentConnecting to Electrical Supply For Your Safety Read Before LightingOperating Heater Extension CordLighting Instructions To Turn OFF GAS To ApplianceThermostat Control Operation Shutting Off HeaterManual Lighting Procedure Inspecting HeaterBurner Flame Pattern Pilot Flame PatternCleaning Maintenance Pilot Assembly Pilot Air InletODS/PILOT and Burner Burner Pilot AIR InletTroubleshooting Observed Problem Possible Cause RemedyGoes out when control knob is Control knob not pressed Delayed ignition of burner Manifold pressure is too lowBurner oriﬁce is clogged Clean burner see Cleaning ODS/pilot lights but flameWalls or furniture Cleaners, etc. may turn into No power to electric outlet 60Hz outletSlight smoke or odor during Air passageways on heaterMent above LSL18NT, SL18NT and VSL18NT LSL18PT, SL18PT and VSL18PT SpecificationsWiring Diagrams Accessories Technical ServiceReplacement Parts Service Publications Service HintsIllustrated Parts Breakdown Models LSL18NT, LSL18PT, SL18NT, SL18PT, VSL18NT and VSL18PTParts List Parts Centrals 116292-01A Warranty Information Keep this WarrantyModel Serial No Date of Purchase Industrial Drive P.O. Box Patent PendingQUÉ Hacer SI Percibe Olor a GAS Tabla DE Contenido Información DE Seguridad Información DE Códigos LocalesDesempaque Características DEL ProductoAire Para Combustión Ventilación Cómo Proveer LA Ventilación AdecuadaConstrucción inusualmente sellada Espacio confinado y no confinadoAire Para Ventilación Aire del interior de la construcción para ventilaciónAire del exterior para ventilación InstalaciónVerifique EL Tipo DE GAS Este calentador está diseñado para montarse en una pared Artículos DE InstalaciónUbicación DEL Calentador Instalación DEL Calentador EN LA Pared Soporte de montajeDesmontaje del panel anterior del calentador Panel de vidrio Separador TornilloZando una broca de 9/64 de pulgada Con los orificios que perforó en la paredEn los maderos de la pared Doble el anclaje de pared como se muestra en la figuraConexión AL Suministro DE GAS Instalación de los tornillos de montaje inferioresQuite el calentador del soporte de montaje Calentador Pared SeparadorUnión T Unión terminal Buje reduc Tor a 1/8De pulgada Válvula de Con rosca Cierre del Tipo NPT Tapón EquipoCierre de Equipo Cerrada MedidorDe gas Tanque de suministro de propano o gas LP Válvula deFuncionamiento DEL Calentador Conexión a LA Alimentación EléctricaCable DE Extensión Para SU SEGURIDAD, LEA Esto Antes DE EncenderloApague el piloto Funcionamiento DELInstrucciones DE Encendido Funcionamiento DEL Patrón DE LA Llama DELCalentador Procedimiento DELimpieza Y Mantenimiento Piloto CON ODS Y QuemadorEntrada DE Aire AL Piloto DEL Quemador GabineteSolución DE Problemas Problema Observado Causa Posible RemedioLa posición del regulador de gas no es la correcta Reemplace el regulador de gasCausa Posible Remedio El problema desaparecerá Hay aire en la línea de gas Hasta que se elimine el aireLínea de gas Los conductos de aire en elCia anterior Diagramas DE Cableado EspecificacionesLSL18NT, SL18NT y VSL18NT LSL18PT, SL18PT y VSL18PTAccesorios Servicio TécnicoPublicaciones DE Servicio Piezas DE RepuestoClasificación Ilustrada DE Piezas Modelos LSL18NT, LSL18PT, SL18NT, SL18PT, VSL18NT Y VSL18PTLista DE Piezas Laporte’s Parts & Service 2444 N th Street Centrales DE PiezasNotas Información DE Garantía Guarde Esta Garantía