Desa VN3000D, VN1800ITA Checking GAS, Connections, Pressure Testing GAS Supply Piping System

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CONNECTING	IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping

TO GAS	and/or fittings.
TO GAS
SUPPLY		Pressure
Continued		Pressure
Continued		Regulator
		Regulator
	Regulator
	Bracket
	Heater			1/2" NPT
	Heater			Pipe Nipple
	Cabinet			Ground Joint
				Ground Joint
			Tee Joint	Union
			Tee Joint
	Test		Reducer	Manual
	Gauge		Bushing to	Shutoff
	Connection *		1/8" NPT	Valve *
	Connection *			Valve *
			1/8" NPT	From
			Plug Tap	From
			Plug Tap	Gas Meter
				Gas Meter
			Tee Joint	(7" W.C. to 10.5" W.C. Pressure)
			Tee Joint
	Sediment		Pipe	3" Minimum
	Trap		Pipe
	Trap		Nipple
			Cap
				Figure 13 - Gas Connection

*An A.G.A. design certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional A.G.A. design certified manual shutoff valve from your dealer. See Accessories, page 31.

CHECKING	WARNING
GAS
GAS	Test all gas piping and connections for leaks after installing or
CONNECTIONS	servicing. Correct all leaks at once.
CONNECTIONS

	WARNING
	Never use an open flame to check for a leak. Apply a mixture of
	liquid soap and water to all joints. Bubbles forming show a leak.
	Correct all leaks at once.

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

Test Pressures In Excess Of 1/2 PSIG

1.Disconnect heater and its individual manual shutoff valve from gas supply piping system. Pressures in excess of 1/2 PSIG will damage heater regulator.

2.Cap off open end of gas pipe where manual shutoff valve was connected.

3.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

Continued	15

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Contents What to do if YOU Smell GAS OWNER’S Operation and Installation ManualContents Safety Information Combustion and Ventilation, pages 5 through Local Codes Unpacking Product Features ProductIdentification Producing Adequate Ventilation Fresh AIR ForCombustion VentilationFresh AIR for Combustion and Ventilation Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside Building Ventilation AIRVentilation Air from Outdoors Ventilation Air From OutdoorsLocating Heater Installing To WallInstallation Items Check GAS TypeAttaching Thermostat Sensing Bulb Thermostat Sensing BulbModels VN1800ITA and VN2550ITA Only Locating Thermostat Sensing BulbMethods For Attaching Mounting Bracket To Wall Installing Heater to WallMounting Bracket Removing Front Panel Of HeaterAttaching Mounting Bracket To Wall Marking Screw LocationsPlacing Heater On Mounting Bracket Installing Bottom Mounting ScrewsConnecting to GAS Supply Servicing. Correct all leaks at once Pressure Testing GAS Supply Piping SystemChecking GAS ConnectionsChecking GAS Connections Pressure Testing Heater GAS ConnectionsOperating Heater Lighting Instructions Operating HeaterTo Select Heating Level HeaterShutting Off Burner Only pilot stays lit Shutting Off HeaterInjury or loss of life Explosion may result causing property damage, personalOperating If you do not follow these instructions exactly, a fire orModels VN1800D and VN3000D LOW MED High Pilot Flame Pattern Inspecting BurnerIf burner flame pattern is incorrect, as shown in Figure Burner Flame PatternAir Passageways Cleaning and Maintenance Trouble ShootingODS/PILOT and Burner Orifice CabinetTROUBLE- Shooting Observed Possible Remedy Problem CauseSee Cleaning Trouble ShootingIng statement at If you smell gasShut off gas supply Do not try to light any applianceTechnical Service Service Publications HintsVN1800D VN3000D Accessories Replacement PartsModel VN1800ITA Illustrated Parts BreakdownParts List Model VN2550ITA Parts List Model VN1800D Control Position Label Hardware Assembly Model VN3000D Parts List Keep this Warranty Warranty Information