Desa SF20NT Checking GAS Connections, Test Pressures In Excess Of 1/2 Psig 3.5 kPa

Page 11

INSTALLATION

Continued

IMPORTANT: Hold the pressure regulator and connector with wrench when connecting it to gas piping and/or fittings. Do not over tighten pipe connection to regulator. The regulator body could

be damaged.

3/8" Male

Pipe Joint

Flex Gas

Flare to NPT

Sealant Required

Line

Connector

(NPT End)

 

3/8" Male

 

Pressure

Flare

 

Regulator

to NPT

 

 

Connector

 

 

Pipe Joint

Equipment

Sealant

Shutoff

 

Required

Valve*

 

CAUTION: For propane/LP gas, make sure external regula- tor has been installed between propane/LP supply and heater. See guidelines under Connect- ing to Gas Supply, page 10.

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1.

Disconnect appliance with its appliance main

 

gas valve (control valve) and equipment

 

shutoff valve from gas supply piping system.

 

Pressures in excess of 1/2 psig will damage

 

heater regulator.

(NPT End)

Tee Joint

Reducer Bushing to 1/8"

NPT

1/8" NPT

Plug Tap

Test Gauge Connection*

3/8" NPT Pipe Nipple

Natural Gas From Gas Meter (4" W.C. to 10.5" W.C. Pressure)

Propane/LP

 

From External

3" Min

Regulator

 

(11" W.C. to 14"

 

W.C. Pressure)

2.

Cap off open end of gas pipe where equipment

 

shutoff valve was connected.

3.

Pressurize supply piping system by either

 

opening propane/LP supply tank valve for

 

propane/LP gas or opening main gas valve

 

located on or near gas meter for natural gas

 

or using compressed air.

4.

Check all joints of gas supply piping system.

 

Apply a noncorrosive leak detection fluid to

 

all joints. Bubbles forming show a leak.

5.

Correct all leaks at once.

Cap Tee Pipe

Joint Nipple

Sediment Trap

Figure 11 - Gas Connection

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

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.

WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detec- tion fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

6.

Reconnect heater and equipment shutoff valve

 

to gas supply. Check reconnected fittings for

 

leaks.

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1.Close equipment shutoff valve (see Figure 12, page 12).

2.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.

3.Check all joints from gas meter for natural gas or propane/LP supply tank for propane/LP gas, to equipment shutoff valve (see Figure 13 or 14, page 12). Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

4.Correct all leaks at once.

PRESSURE TESTING HEATER GAS CONNECTIONS

1.Open equipment shutoff valve (see Figure 12, page 12).

2.For natural gas open main gas valve located on or near gas meter. For propane/LP gas open propane/LP supply tank valve.

116307-01A

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Contents Residential Models Garage Models What to do if YOU Smell GASTable of Contents Safety Information Unpacking Product FeaturesLocal Codes Determining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationProviding Adequate Ventilation Ventilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors InstallationInstallation Items Check GAS TypeAttaching to wall stud Attaching to wall anchor Installing Heater to WallLocating Heater Coldest part of roomAttaching To Wall Anchor Method Marking Screw LocationsMark two screw locations on wall as shown in Figure Locate hardware packet behind left side door of heaterExternal Regulator With Vent Pointing Down Connecting to GAS SupplyTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Checking GAS ConnectionsTest Pressures In Excess Of 1/2 Psig 3.5 kPa Make sure control knob of heater is in the OFF position For Your Safety Read Before LightingInstalling Refractory and Front Panel Operating HeaterWhat to do if YOU Smell GAS Lighting InstructionsInspecting Heater Cabinet Cleaning MaintenanceODS/PILOT and Burner Burner Pilot AIR InletContact local propane/LP gas company TroubleshootingObserved Problem Possible Cause Remedy Delayed ignition of burners Manifold pressure is too low Goes out when control knob is Control knob not pressedProblem could be caused by AssemblyTurn 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 LowLSF30NT, VSF30NT LSF30PT, VSF30PT SpecificationsSF30NT SF30PT Parts Central AccessoriesReplacement Parts Illustrated Parts Breakdown LSF20PT Parts ListKeep this Warranty Warranty InformationModelos Modelos Para Cochera QUÉ Hacer SI Percibe Olor a GASTabla DE Contenido Información 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 del interior de la construcción para ventilación Aire Para VentilaciónAire del exterior para ventilación InstalaciónVerifique EL Tipo DE GAS Artículos DE InstalaciónUbicación DEL Calentador En áreas con mucho viento oColoque 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 GASRepare todas las fugas inmediatamente Revisión DE LAS Conexiones DE GASGas natural Propano o gas LPInstalación del panel anterior y el refractario Abra la válvula de cierre del equipo consulte la figuraInstale el panel anterior y el refractario No intente encender ningún aparato Instrucciones DE EncendidoInspección DEL Calentador Funcionamiento DELComo se muestra en la figura Inspección DELLimpieza Y Mantenimiento Entrada DE Aire AL Piloto DEL QuemadorCausa Posible Remedio Solución DE ProblemasPresione totalmente la perilla de control Problema Observado Causa Posible RemedioBaja presión del gas El termopar está dañadoSilbante cuando el quemador El problema desapareceráCierre el suministro de aire Se enciende o se apagaCuando la presión del gas de entrada sea muy baja Servicio TécnicoConsejos Para Servicio LSF30NT, VSF30NT EspecificacionesSF30NT Central DE Piezas AccesoriosPiezas DE Repuesto Clasificación Ilustrada DE Piezas Lista DE Piezas Guarde Esta Garantía Información DE Garantía

SF20NT specifications

Desa SF20NT is a versatile and innovative gas-fired space heater designed for efficient heating solutions in various environments, whether in residential, commercial, or industrial settings. This model is known for its high performance, energy efficiency, and advanced technology, making it a popular choice among users seeking reliability and effectiveness in their heating needs.

One of the primary features of the Desa SF20NT is its impressive heating capacity. With a heating output of around 20,000 BTUs, it can effectively warm spaces up to 1,000 square feet, making it suitable for larger areas. This capability is enhanced by the heater's superior metal construction, ensuring durability and long-lasting performance.

In terms of technology, the Desa SF20NT incorporates a direct vent system that utilizes outside air for combustion. This feature not only increases efficiency but also enhances safety, as it minimizes the risk of hazardous fumes entering the living space. The direct vent system allows for installation flexibility; the unit can be vented horizontally through a wall or vertically through a roof, catering to different building designs.

Another standout characteristic of the Desa SF20NT is its thermostat control, which allows users to maintain a consistent temperature easily. This feature contributes to energy savings by enabling the heater to operate only when necessary, thus reducing unnecessary heating costs. Additionally, the unit includes a programmable timer, allowing users to set specific heating schedules, further optimizing energy use.

Safety is also a critical aspect of the Desa SF20NT design. It comes with built-in safety features such as a flame sensor and a safety shut-off system, ensuring that the heater operates under safe conditions at all times. The unit is designed to meet stringent safety standards, giving users peace of mind.

In summary, the Desa SF20NT is a powerful, efficient, and safe space heater that is equipped with modern features and technologies. With its high heating capacity, direct vent system, thermostat control, and safety mechanisms, it stands out as an excellent choice for anyone looking for reliable heating solutions. Whether for home or business use, the Desa SF20NT is built to provide comfort and efficiency year-round.
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