Desa VTP22R, VTN25R installation manual Connecting to GAS Supply

Page 10

INSTALLATION

Continued

CONNECTING TO GAS SUPPLY

WARNING: This appliance requires a 3/8" NPT (National Pipe Thread) inlet connection to the pressure regulator.

WARNING: A qualified service person must connect heater to gas supply. Follow all local codes.

WARNING: For natural gas, never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

IMPORTANT: For natural gas, check gas line pressure before connecting heater to gas line. Gas line pressure must be no greater than 10.5 inches (2.6 kPa) of water. If gas line pressure is higher, heater regulator damage could occur.

CAUTION: For propane/LP gas, never connect heater di- rectly to the propane/LP supply. This heater requires an external regulator (not supplied). Install theexternalregulatorbetweenthe heater and propane/LP supply.

For propane/LP gas, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches (2.7 and 3.5 kPa) of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install the external regulator with the vent pointing down as shown in Figure 12. Pointing the vent down protects it from freezing rain or sleet.

CAUTION: Use only new, black iron or steel pipe. Inter- nally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of large enough diameter to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.

Typical Inlet Pipe Diameter

All models - 1/2" or greater

Installation must include equipment shutoff valve, union and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 13, page 11).

IMPORTANT: Install an equipment shutoff valve in an accessible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.

WARNING: Use pipe joint sealant that is resistant to liquid

petroleum (LP) gas.

 

Propane/LP

External

Supply Tank

Regulator

 

Vent

Pointing

Down

Figure 12 - External Regulator With Vent

Pointing Down

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Contents What to do if YOU Smell GAS Table of Contents Safety Information Product Identification Product FeaturesLocal Codes UnpackingProviding Adequate Ventilation AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation AIR Ventilation Air From Inside BuildingCheck GAS Type InstallationInstallation Items Locating HeaterReceiver AA Batteries Battery Cover Installing Remote Control ReceiverReceiver Wire Bushing Connector Bracket Replacing Battery in Ignitor Installing Batteries Into RemoteMounting Heater Base to Floor Where required by local codes Connecting to GAS Supply Propane/LP External Supply Tank Regulator Vent Pointing DownChecking GAS Connections Make sure control knob of heater is in the OFF position Pressure Testing Heater GAS ConnectionsTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa ClosedLighting Instructions For Your Safety Read Before LightingOperating Heater Electronic Ignitor Auxiliary Pilot Knob ButtonTo Turn OFF GAS To Appliance Manual Lighting ProcedureHAND-HELD Remote Control Operation Thermostat OperationPilot Flame Pattern Changing Set TemperatureInspecting Heater Burner Flame PatternService Hints Cleaning MaintenanceTechnical Service Troubleshooting Observed Problem Possible Cause RemedyAssembly Goes out when control knob isProblem could be caused by Delayed ignition of burners Manifold pressure is too lowGas leak. See Warning Illustrated Parts Breakdown Models CTR25NR, VTN25R, CTR22PR and VTP22RParts List Accessory SpecificationsService Publications Replacement Parts Parts Central FBDPatent Pending QUÉ Hacer SI Percibe Olor a GAS Modelos CTR25NR, CTR22PR, VTN25R Y VTP22RTabla DE Contenido Información DE SeguridadContinuación Desempaque Códigos LocalesIdentificación DEL Producto Características DEL ProductoConstrucción inusualmente sellada Aire Para Combustión VentilaciónCómo Procurar LA Ventilación Adecuada Espacio confinado o no confinadoAire Para Ventilación Aire del interior de la construcción para ventilaciónArtículos DE Instalación InstalaciónVerifique EL Tipo DE GAS Ubicación DEL CalentadorCubierta de la batería Instalación DEL Receptor DE Control RemotoReceptor Baterías AA Soporte del Conector Buje Del alambre ReceptorReemplazo DE LA Batería DEL Encendedor Instalación DE LAS Baterías EN EL Control RemotoConexión AL Suministro DE GAS PRECAUCIÓNEnelcasodepro- pano o gas LP, nunca conecte el caDistribuidor. Consulte Accesorios, página Revisión DE LAS Conexiones DE GASRepare todas las fugas inmediatamente Vuelva a colocar el panel anterior Cierre la válvula de cierre del equipo consulte la figuraAbra la válvula de cierre del equipo consulte la figura Válvula deInstrucciones DE Encendido Funcionamiento DEL CalentadorPara SU SEGURIDAD, LEA Esto Antes DE Encenderlo Botón de encendido Perilla Auxiliar Del Piloto ElectrónicoFuncionamiento DEL Control Remoto Portátil Funcionamiento DEL TermostatoProcedimiento DE Encendido Manual Función ManualPatrón DE LA Llama DEL Piloto Inspección DEL CalentadorFunción DEL Termostato Room Patrón DE LA Llama DELLimpieza Y Mantenimiento Servicio TécnicoSolución DE Problemas Problema Observado Causa Posible RemedioProblema Observado Causa Posible RemedioImportante anterior Clasificación Ilustrada DE Piezas Modelos CTR25NR, VTN25R, CTR22PR Y VTP22RLista DE Piezas Publicaciones Para Servicio EspecificacionesAccesorios Válvula DE Cierre DEL Equipo GA5010Piezas Bajo Garantía Piezas DE RepuestoCentral DE Piezas Piezas SIN GarantíaPatente en trámite 113261-01 Rev. C 10/04
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