Inspecting Heater, Pilot Flame Pattern | Desa VTN25R, VTP22R

OPERATING HEATER

Blue Flame

Continued

THERMOSTATIC "ROOM" FUNCTION

Thermocouple

Pilot Burner

Setting Desired Room Temperature This remote control system can be thermostati- cally controlled when the remote control is in the thermostatic mode. The word ROOM must be displayed on the screen.

1.Press MODE button on remote control until ROOM appears. This sets the remote to the thermostat mode.

2.Press and hold the SET button until the desired temperature is displayed. The numbers will increase from 45° to 99° then restart over at 45°. After releasing the SET button, the set room temperature will dis- play for 3 seconds, then default to display the room temperature.

Changing Set Temperature

1.Follow step two under Setting Desired Room Temperature above.

2.Press the MODE button to disengage the thermo mode. The word ROOM does not display when thermostatic mode is not in operation.

INSPECTING HEATER

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

PILOT FLAME PATTERN

Figure 20 shows a correct pilot ﬂame pattern. Figure 21 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 21

•turn heater off (see To Turn Off Gas to Appliance, page 14)

•see Troubleshooting, page 17

Note: The pilot ﬂame on natural gas units will have a slight curve, but ﬂame should be blue and have no yellow or orange color.

Figure 20 - Correct Pilot Flame Pattern
	Yellow Flame
Thermocouple	Pilot Burner

Figure 21 - Incorrect Pilot Flame Pattern
BURNER FLAME PATTERN
Figure 22 shows a correct and incorrect burner ﬂame
pattern. If burner ﬂame pattern is incorrect

•turn heater off (see To Turn Off Gas to Appli- ance, page 14)

•see Troubleshooting, page 17

Correct	Incorrect
Flame	Flame
Pattern	Pattern

Figure 22 - Burner Operation

113261-01C

www.desatech.com

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Desa VTN25R, VTP22R Inspecting Heater, Pilot Flame Pattern, Burner Flame Pattern, Thermostatic Room Function

Contents

What to do if YOU Smell GAS Table of Contents Safety Information Unpacking Product FeaturesLocal Codes Product Identification AIR for Combustion Ventilation Providing Adequate VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation Air From Inside Building Ventilation AIR Locating Heater InstallationInstallation Items Check GAS Type Installing Remote Control Receiver Receiver AA Batteries Battery CoverReceiver Wire Bushing Connector Bracket Installing Batteries Into Remote Replacing Battery in IgnitorMounting Heater Base to Floor Where required by local codes Propane/LP External Supply Tank Regulator Vent Pointing Down Connecting to GAS Supply Checking GAS Connections Closed Pressure Testing Heater GAS ConnectionsTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Make sure control knob of heater is in the OFF position Electronic Ignitor Auxiliary Pilot Knob Button For Your Safety Read Before LightingOperating Heater Lighting Instructions Thermostat Operation Manual Lighting ProcedureHAND-HELD Remote Control Operation To Turn OFF GAS To Appliance Burner Flame Pattern Changing Set TemperatureInspecting Heater Pilot Flame Pattern Cleaning Maintenance Service HintsTechnical Service Observed Problem Possible Cause Remedy Troubleshooting Delayed ignition of burners Manifold pressure is too low Goes out when control knob isProblem could be caused by Assembly Gas leak. See Warning Models CTR25NR, VTN25R, CTR22PR and VTP22R Illustrated Parts Breakdown Parts List Specifications AccessoryService Publications Replacement Parts FBD Parts Central Patent Pending Modelos CTR25NR, CTR22PR, VTN25R Y VTP22R QUÉ Hacer SI Percibe Olor a GAS Información DE Seguridad Tabla DE Contenido Continuación Características DEL Producto Códigos LocalesIdentificación DEL Producto Desempaque Espacio conﬁnado o no conﬁnado Aire Para Combustión VentilaciónCómo Procurar LA Ventilación Adecuada Construcción inusualmente sellada Aire del interior de la construcción para ventilación Aire Para Ventilación Ubicación DEL Calentador InstalaciónVerifique EL Tipo DE GAS Artículos DE Instalación Soporte del Conector Buje Del alambre Receptor Instalación DEL Receptor DE Control RemotoReceptor Baterías AA Cubierta de la batería Instalación DE LAS Baterías EN EL Control Remoto Reemplazo DE LA Batería DEL Encendedor PRECAUCIÓNEnelcasodepro- pano o gas LP, nunca conecte el ca Conexión AL Suministro DE GAS Revisión DE LAS Conexiones DE GAS Distribuidor. Consulte Accesorios, páginaRepare todas las fugas inmediatamente Válvula de Cierre la válvula de cierre del equipo consulte la ﬁguraAbra la válvula de cierre del equipo consulte la ﬁgura Vuelva a colocar el panel anterior Botón de encendido Perilla Auxiliar Del Piloto Electrónico Funcionamiento DEL CalentadorPara SU SEGURIDAD, LEA Esto Antes DE Encenderlo Instrucciones DE Encendido Función Manual Funcionamiento DEL TermostatoProcedimiento DE Encendido Manual Funcionamiento DEL Control Remoto Portátil Patrón DE LA Llama DEL Inspección DEL CalentadorFunción DEL Termostato Room Patrón DE LA Llama DEL Piloto Servicio Técnico Limpieza Y Mantenimiento Problema Observado Causa Posible Remedio Solución DE Problemas Causa Posible Remedio Problema Observado Importante anterior Modelos CTR25NR, VTN25R, CTR22PR Y VTP22R Clasificación Ilustrada DE Piezas Lista DE Piezas Válvula DE Cierre DEL Equipo GA5010 EspecificacionesAccesorios Publicaciones Para Servicio Piezas SIN Garantía Piezas DE RepuestoCentral DE Piezas Piezas Bajo Garantía 113261-01 Rev. C 10/04 Patente en trámite