Desa VSF30PT, LSFG20NT Check GAS Type, Installation Items, Ventilation Air From Outdoors

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AIR FOR COMBUSTION

AND VENTILATION

Continued

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent open- ings: one within 12" (30.4 cm) of the ceiling and one within 12" (30.4 cm) of the floor. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces. Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

IMPORTANT: Do not provide openings for inlet or outlet air into attic if attic has a thermostat- controlled power vent. Heated air entering the attic will activate the power vent.

 

Outlet

Ventilated

 

Attic

 

Air

 

 

Outlet

 

 

Air

 

To Attic

 

 

 

 

To

 

 

Crawl

Inlet

 

Space

 

 

Air

 

 

 

Inlet Air

Ventilated

 

Crawl Space

 

 

Figure 3 - Ventilation Air from Outdoors

Installation

NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your pri- mary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source.

WARNING: A qualified ser- vice person must install heater. Follow all local codes.

CHECK GAS TYPE

Use only the correct type of gas (natural or pro- pane/LP). If your gas supply is not the correct gas type, do not install heater. Call dealer where you bought heater for proper type heater.

WARNING: This appliance is equipped for (natural or pro- pane/LP) gas. Field conversion is not permitted.

INSTALLATION ITEMS

Before installing heater, make sure you have the items listed below.

•for propane/LP gas, external regulator (supplied by installer)

•piping from gas supply (check local codes)

•flex gas tubing

•sealant (resistant to propane/LP gas)

•equipment shutoff valve*

•flex gas line with 3/8" NPT tap

•ground joint union

•sediment trap

•tee joint

•pipe wrench

•for natural gas, test gauge connection*

*A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. The optional CSA design- certified equipment shutoff valve can be purchased from your dealer. See Accessories, page 21.

116307-01Cwww.desatech.com

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Contents Models SF20NT, SF20PT ResidentialGarage Models Safety Information Table of ContentsSafety Information Product Identification Safety InformationProduct Features Local CodesProviding Adequate Ventilation Air For Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation AIR AIR for Combustion VentilationVentilation Air From Inside Building Ventilation Air From Outdoors InstallationInstallation Items Check GAS TypeLocating Heater Installing Heater to WallLocate hardware packet behind left side door of heater Connecting to GAS SupplyMarking Screw Locations Placing Heater On Mounting ScrewsPropane/LP Natural GasOpen equipment shutoff valve see Figure Pressure Testing Heater Gas ConnectionsChecking GAS Connections Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaInstalling Refractory and Front Panel For Your Safety Read Before LightingOperating Heater Shutting Off Burner Only pilot stays lit Lighting InstructionsTo Turn OFF GAS To Appliance Shutting Off HeaterPilot Flame Pattern Manual Lighting ProcedureInspecting Heater OperationCabinet Cleaning MaintenanceODS/PILOT and Burner Burner Pilot Air InletObserved Problem Possible Cause Remedy TroubleshootingTroubleshooting Turn off air supply Noise when burner is litDirty or partially clogged Clean burner see Cleaning When heated, vapors from Turn heater off when usingGas leak. See Warning Technical ServiceService Publications Service Hints When Gas Pressure Is Too LowSF30NT SF30PT SpecificationsLSF20NT, LSFG20NT, VSF20NT LSF20PT, LSFG20PT, VSF20PT VSFG20NT VSGF20PTReplacement Parts AccessoriesParts Central Illustrated Parts Breakdown Parts List Keep this Warranty Warranty InformationModelos Consumidor Conserve este manual para referencias futurasModelos Para Cochera Información de seguridad Tabla de contenidoInformación de seguridad Características del Producto Códigos localesIdentificación del Producto DesempaqueEspacio confinado y no confinado Aire para combustión VentilaciónCómo Procurar LA Ventilación Adecuada Construcción inusualmente selladaAire Para Ventilación Aire Para Combustión VentilaciónAire del interior de la construcción para Ventilación Verifique EL Tipo DE GAS InstalaciónArtículos DE Instalación Fuertes corrientes de aire Ubicación DEL CalentadorDonde cortinas, muebles, ropa De las partes anterior, superiorColoque el calentador en los tornillos de montaje Instalación DEL Calentador EN LA ParedDoble en anclaje de pared como se muestra en la figura Colocación del calentador en los Tornillos de montajeVentila apuntando hacia abajo Conexión AL Suministro DE GASGas natural Revisión DE LAS Conexiones DE GASRepare todas las fugas inmediatamente Instale un difusor frontal como se muestra en la figura Abra la válvula de cierre del equipo consulte la figuraInstale el panel anterior y el refractario Instalación del panel anterior y el refractarioInstrucciones DE Encendido Funcionamiento del CalentadorEncendido Manual Inspección del CalentadorCómo Cerrar EL Suministro DE GAS AL Aparato Funcionamiento DELLimpieza y Mantenimiento Inspección delPatrón DE LA Llama DEL Calentador LSF30NT, VSF30NT EspecificacionesGabinete SF30NTCausa Posible Remedio Solución de problemasSolución DE Problemas En el quemador El problema desapareceráLlama amarilla durante la No hay suficiente aire CombustiónAl inicio de la página Servicio técnicoPublicaciones de servicio Consejos para servicioVálvula DE Cierre DEL Equipo GA5010 AccesoriosPiezas de repuesto Central de piezasClasificación ilustrada de piezas Lista DE Piezas Guarde Esta Garantía Información de garantía

VSF30PT, LSFG20NT specifications

The Desa VSF30PT and LSFG20NT represent two significant innovations in the HVAC (Heating, Ventilation, and Air Conditioning) industry, catering to diverse consumer needs and preferences.

The Desa VSF30PT is a powerful and efficient forced-air heater designed for residential and light commercial applications. One of its primary features is its high-efficiency output, providing a substantial heating capacity while consuming minimal energy. The unit is equipped with a robust heat exchanger that enhances its performance, ensuring optimal heat distribution throughout the space. A notable characteristic of the VSF30PT is its user-friendly digital thermostat, allowing for precise temperature control, which can significantly improve comfort levels and reduce energy consumption.

Additionally, the Desa VSF30PT incorporates advanced safety features, such as automatic shut-off protection in case of overheating or airflow obstruction. Its compact design makes it easy to install in tight spaces, providing flexibility in placement without compromising on effectiveness. The unit operates quietly, minimizing noise disturbances, which is especially important in residential settings.

On the other hand, the LSFG20NT is an innovative gas furnace that combines performance with energy efficiency. This model is equipped with a variable-speed blower motor that allows for consistent airflow and improved humidity control, making it an excellent choice for homeowners who prioritize comfort. Its multi-stage heating design ensures that the furnace operates at different levels according to the heating demand, optimizing energy usage and enhancing overall efficiency.

The LSFG20NT also features a modulating gas valve, which adjusts the burner output to provide just the right amount of heat for any given situation. This not only improves comfort but also contributes to significant energy savings over time. Furthermore, the LSFG20NT is designed with advanced filtration systems that improve indoor air quality by trapping dust, allergens, and other particles.

Both units showcase the latest technology in HVAC systems, emphasizing energy efficiency, safety, and user convenience. With their unique features and characteristics, the Desa VSF30PT and LSFG20NT stand out in the market, making them ideal choices for those seeking reliable and efficient heating solutions. Whether for residential or light commercial applications, these models promise performance that meets the demands of modern-day heating needs.
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