Desa LSL18PT, LSL18NT, VSL18PT, VSL18NT Checking GAS Connections, Min. Natural Gas, Propane/LP

Page 12

INSTALLATION

Continued

 

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 - 3/8" (9.5 mm)

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 14).

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.

 

Pressure

Heater

Regulator

Cabinet

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.

Install sediment trap in supply line as shown in Figure 14. Locate sediment trap where it is within reach for cleaning. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.

IMPORTANT: Hold the pressure regulator 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.

CHECKING GAS CONNECTIONS

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

Gauge Connection*

3/8" NPT Pipe Nipple

Tee Joint

Reducer Bushing to 1/8" NPT

1/8" NPT

Plug Tap

Ground Joint

Union

Equipment

Shutoff

Valve *

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.

Test

TrapSediment

Tee Joint

Pipe

Nipple

Cap

3"

(7.6 cm)

Min. Natural Gas

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

Propane/LP

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

From External Regulator

(11" W.C. to 14" W.C.

Pressure)

Figure 14 - 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 23.

ing to Gas Supply, page 11.

12

www.desatech.com

116292-01A

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Contents What to do if YOU Smell GAS Table of Contents Safety Information Product Features Local CodesProduct Identification UnpackingAIR for Combustion Ventilation Providing Adequate VentilationFollowing are excerpts from National Fuel Unusually Tight ConstructionDetermining FRESH-AIR Flow for Heater Location Determining if You Have a Confined or Unconfined SpaceInstallation Ventilation AIRCheck GAS Type Ventilation Air From Inside BuildingInstallation Items Locating HeaterThis heater is designed to be mounted on a wall Installing Heater to Wall Attaching Mounting Bracket To Wall Is provided with heaterFor attaching mounting bracket to wall studs Placing Heater On Mounting BracketConnecting to GAS Supply Installing Bottom Mounting ScrewsImportant For natural gas, check gas line Tor damage could occurChecking GAS Connections Min. Natural GasPropane/LP Test Pressures In Excess Of 1/2 Psig 3.5 kPa Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaEquipment Open Shutoff Valve Closed Gas Meter EquipmentConnecting to Electrical Supply For Your Safety Read Before LightingOperating Heater Extension CordLighting Instructions To Turn OFF GAS To ApplianceThermostat Control Operation Shutting Off HeaterManual Lighting Procedure Inspecting HeaterBurner Flame Pattern Pilot Flame PatternCleaning Maintenance Pilot Assembly Pilot Air InletODS/PILOT and Burner Burner Pilot AIR InletTroubleshooting Observed Problem Possible Cause RemedyGoes out when control knob is Control knob not pressed Delayed ignition of burner Manifold pressure is too lowBurner orifice is clogged Clean burner see Cleaning ODS/pilot lights but flameWalls or furniture Cleaners, etc. may turn into No power to electric outlet 60Hz outletSlight smoke or odor during Air passageways on heaterMent above Specifications Wiring DiagramsLSL18NT, SL18NT and VSL18NT LSL18PT, SL18PT and VSL18PT Accessories Technical ServiceReplacement Parts Service Publications Service HintsIllustrated Parts Breakdown Models LSL18NT, LSL18PT, SL18NT, SL18PT, VSL18NT and VSL18PTParts List Parts Centrals 116292-01A Warranty Information Keep this WarrantyModel Serial No Date of Purchase Industrial Drive P.O. Box Patent PendingQUÉ Hacer SI Percibe Olor a GAS Tabla DE Contenido Información DE Seguridad Información DE Códigos LocalesDesempaque Características DEL ProductoAire Para Combustión Ventilación Cómo Proveer LA Ventilación AdecuadaConstrucción inusualmente sellada Espacio confinado y no confinadoAire Para Ventilación Aire del interior de la construcción para ventilaciónInstalación Verifique EL Tipo DE GASAire del exterior para ventilación Artículos DE Instalación Ubicación DEL CalentadorEste calentador está diseñado para montarse en una pared Instalación DEL Calentador EN LA Pared Soporte de montajeDesmontaje del panel anterior del calentador Panel de vidrio Separador TornilloZando una broca de 9/64 de pulgada Con los orificios que perforó en la paredEn los maderos de la pared Doble el anclaje de pared como se muestra en la figuraConexión AL Suministro DE GAS Instalación de los tornillos de montaje inferioresQuite el calentador del soporte de montaje Calentador Pared SeparadorUnión T Unión terminal Buje reduc Tor a 1/8De pulgada Válvula de Con rosca Cierre del Tipo NPT Tapón EquipoCierre de Equipo Cerrada MedidorDe gas Tanque de suministro de propano o gas LP Válvula deFuncionamiento DEL Calentador Conexión a LA Alimentación EléctricaCable DE Extensión Para SU SEGURIDAD, LEA Esto Antes DE EncenderloFuncionamiento DEL Instrucciones DE EncendidoApague el piloto Funcionamiento DEL Patrón DE LA Llama DELCalentador Procedimiento DELimpieza Y Mantenimiento Piloto CON ODS Y QuemadorEntrada DE Aire AL Piloto DEL Quemador GabineteSolución DE Problemas Problema Observado Causa Posible RemedioLa posición del regulador de gas no es la correcta Reemplace el regulador de gasCausa Posible Remedio El problema desaparecerá Hay aire en la línea de gas Hasta que se elimine el aireLínea de gas Los conductos de aire en elCia anterior Diagramas DE Cableado EspecificacionesLSL18NT, SL18NT y VSL18NT LSL18PT, SL18PT y VSL18PTAccesorios Servicio TécnicoPublicaciones DE Servicio Piezas DE RepuestoClasificación Ilustrada DE Piezas Modelos LSL18NT, LSL18PT, SL18NT, SL18PT, VSL18NT Y VSL18PTLista DE Piezas Laporte’s Parts & Service 2444 N th Street Centrales DE PiezasNotas Información DE Garantía Guarde Esta Garantía
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