Desa VSL18PT, LSL18PT, LSL18NT Inspecting Heater, Manual Lighting Procedure, Burner Flame Pattern

Page 16

OPERATING HEATER

Continued

Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room tem- perature (depending on housing construction, installation location, room size, open air tem- peratures, etc.). Frequent use of your heater will let you determine your own comfort levels.

Thermocouple

Yellow Flame

Pilot

Burner

MANUAL LIGHTING PROCEDURE

Figure 24 - Incorrect Pilot Flame Pattern

BURNER FLAME PATTERN

1.Remove front panel (see Figure 6, page 9).

2.Follow steps 1 through 7 under Lighting Instructions, page 15.

3.With control knob pressed in, strike match. Hold match to pilot until pilot lights.

4.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow step 9, under Lighting Instructions, page 15.

5.Replace front panel.

INSPECTING HEATER

Check pilot ﬂame pattern and burner ﬂame pat- tern often.

PILOT FLAME PATTERN

Figure 22 shows a correct pilot ﬂame pattern. Figure 23 shows an incorrect pilot ﬂame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

If pilot ﬂame pattern is incorrect, as shown in Figure 23

WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide.

NOTICE: Do not mistake orange ﬂames with yellow tipping. Dirt or other ﬁne particles enter the heater and burn causing brief patches of orange ﬂame.

Figure 24 shows a correct burner ﬂame pattern. Figure 25 shows an incorrect burner ﬂame pattern. The incorrect burner ﬂame pattern shows yellow tipping of the ﬂame. It also shows the ﬂame higher than 1/2 the deﬂector panel height.

If burner ﬂame pattern is incorrect, as shown in Figure 25

•turn heater off (see To Turn Off Gas To Appli- ance, page 15)

•see Troubleshooting, page 18

	•	turn heater off (see To Turn Off	Gas to Appliance,	Blue
				Flame
		page 15)
				1/2
	•	see Troubleshooting, page 18
	Note: The pilot ﬂame on natural gas units will			Deﬂector
				Height
	have a slight curve, but ﬂame should be blue and
				Figure 24 - Correct Burner Flame Pattern
	have no yellow or orange color.

Blue Flame

Thermocouple

Pilot

Burner

Yellow

Tipping

1	/2

Deﬂector
Height

Figure 25 - Incorrect Burner Flame

Pattern

Figure 23 - Correct Pilot Flame Pattern

16

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116292-01A

Image 16

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 BuildingLocating Heater Installation ItemsThis heater is designed to be mounted on a wall 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 occurMin. Natural Gas Checking GAS ConnectionsPropane/LP 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 Wiring Diagrams SpecificationsLSL18NT, SL18NT and VSL18NT LSL18PT, SL18PT and VSL18PT 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 ventilaciónVerifique EL Tipo DE GAS InstalaciónAire del exterior para ventilación Ubicación DEL Calentador Artículos DE InstalaciónEste calentador está diseñado para montarse en una pared 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 EncenderloInstrucciones DE Encendido Funcionamiento DELApague el piloto 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