Desa HDR30NT, HDR18NT, LCR30NT Air For Combustion Ventilation, Providing Adequate Ventilation

Page 5

Air For Combustion

and Ventilation

WARNING: This heater shall not be installed in a confined space or unusually tight con- struction unless provisions are provided for adequate combus- tion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home.

Today’s homes are built more energy efficient than ever. New materials, increased insulation and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months, home owners want their homes as airtight as possible.

While it is good to make your home energy efficient, your home needs to breathe. Fresh air must enter your home. All fuel-burning ap- pliances need fresh air for proper combustion and ventilation.

Exhaust fans, fireplaces, clothes dryers and fuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances. This will insure proper venting of vented fuel-burning appliances.

PROVIDING ADEQUATE

VENTILATION

The following are excerpts from National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.

All spaces in homes fall into one of the three following ventilation classifications:

1.Unusually Tight Construction

2.Unconfined Space

3.Confined Space

The information on pages 5 through 7 will help you classify your space and provide adequate ventilation.

Unusually Tight Construction

The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of un- usually tight construction, you must provide additional fresh air.

Unusually tight construction is defined as construction where:

a.walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm (6 x 10-11kg per pa-sec-m2) or less with openings gasketed or sealed and

b.weather stripping has been added on openable windows and doors and

c.caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electri- cal and gas lines and at other openings.

If your home meets all of these three criteria, you must provide additional fresh air. See Ventilation Air From Outdoors, page 7.

If your home does not meet all of the three criteria above, proceed to Determining Fresh- Air Flow For Heater Location, page 6.

Confined and Unconfined Space

The National Fuel Gas Code, ANSI Z223.1/ NFPA 54 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the ag- gregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the un- confined space.

*Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them.

121255-01Awww.desatech.com

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Contents Models What to do if YOU Smell GAS Safety Table of ContentsSafety Product Features SafetyLocal Codes UnpackingProviding Adequate Ventilation Air For Combustion VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationVentilation AIR Determining if You Have a Confined or Unconfined SpaceInstallation Items InstallationCheck GAS Type Ventilation Air From OutdoorsThermostat Sensing Bulb Locating HeaterInstalling Heater to Wall Mounting heater to floor With optional floor kit Installing Bottom Mounting ScrewsAttaching To Wall Anchor Method Placing Heater On Mounting BracketTypical Inlet Pipe Diameters Connecting to GAS SupplyMounting Base Feet to Floor Checking GAS Connections Pressure Testing Heater Gas Connections For Your Safety Read Before LightingOperation Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaThermocouple Ignitor Electrode Pilot Burner Lighting InstructionsDo not try to light any appliance To Select Heating Level Manual Lighting ProcedureTo Turn OFF GAS To Appliance Thermostat ControlInspecting Heater CleaningPilot Flame Pattern Burner Flame PatternTechnical Service Service HintsODS/PILOT and Burner Burner Pilot Air InletObserved Problem Possible Cause Remedy TroubleshootingReplace burner orifices TroubleshootingHeaters. If noise is exces Is lit or shut off CoolingIng furniture polish, wax Gas odor even when controlNot enough fresh air is LP gas onlyAccessories SpecificationsCabinet body Models PartsKEY 120630-03 099387-11 104818-04 099218-09 099056-25 099056-02 Burner Assembly ModelsParts Service Publications Parts Central Replacement PartsParts Under Warranty Parts Not Under WarrantyModel Serial No Date of Purchase WarrantyKeep this Warranty Modelos QUÉ Hacer SI Percibe Olor a GASTabla de contenido Intoxicación con monóxido de carbono SeguridadDesempaque Códigos localesIdentificación del Producto Saque el calentador de la cajaCómo Procurar LA Ventilación Adecuada Características del ProductoAire para combustión Ventilación Espacio confinado y no confinado Aire Para Combustión VentilaciónAire del interior de la construcción para ventilación Aire Para VentilaciónVerifique EL Tipo DE GAS InstalaciónArtículos DE Instalación Ubicación DEL CalentadorSoporte de montaje Bulbo Sensor DE TermostatoInstalación DEL Calentador EN LA Pared Métodos para fijar el soporte de montaje a la pared Desmontaje del panel anterior del calentadorCómo marcar las ubicaciones de los tornillos Calentador con 3 placasInstalación de los tornillos de montaje inferiores Método de fijación a viga de paredColocación del calentador en el soporte de montaje Montaje de las patas de la base en el piso Conexión AL Suministro DE GASMontaje de las patas de la base en el calentador Gabinete del Unión Calentador Pulimentada Regulador Niple para De presión Tubería de Soporte del TipoUnión T Sin rosca Válvula de Buje Reductor Cierre del EquipoRepare todas las fugas inmediatamente Revisión DE LAS Conexiones DE GASSuministro De propano Gas LP Válvula de cierre del equipo Repare todas las fugas inmediatamente Válvula deCierre del Equipo Cerrada Instrucciones DE Encendido FuncionamientoPOR SU SEGURIDAD, LEA Esto Antes DE Encender EL Calentador Perilla de control Botón del encendedor Para Seleccionar EL Nivel DE CalefacciónTermopar Electrodo del encendedor Quemador Del piloto Perilla de control QuemadoresControl CON Cómo Cerrar EL Suministro DE GAS AL AparatoTermostato Funcionamiento Procedimiento Para Encendido ManualPatrón DE LA Llama DEL Piloto Inspección del CalentadorPatrón DE LA Llama DEL Calentador Termopar Del pilotoPiloto CON ODS Y Quemador LimpiezaEntrada de aire al piloto del quemador GabineteProblema Observado Causa Posible Remedio Solución de problemasCausa Posible Remedio Solución DE Problemas ContinuaciónSolución DE Problemas Anotación de advertencia Accesorios EspecificacionesConsejos para servicio Servicio técnicoModelos con gabinete PiezasAbrazadera de cable Conjunto de herrajesModelos con conjunto de quemador PiezasPublicaciones de Servicio Piezas de repuestoPiezas con garantía Piezas sin garantíaGuarde Esta Garantía GarantíaModelo De serie Fecha de compra 121255-01 Rev. a 03/07
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