Desa BG30PT, FG30P Checking GAS Connections, Test Pressures Equal To or Less Than, Psig 3.5 kPa

Page 13

INSTALLATION
	Continued
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.
Pressure
Regulator	Heater

	Cabinet

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.

CAUTION: For propane/LP gas, make sure external regula-

		3/8" NPT
	Connection*	Pipe Nipple
		Bushing to
		Tee Joint
		Reducer
	Gauge	1/8" NPT
		1/8" NPT

	Test	Plug Tap
		Trap	Tee Joint

		Sediment	Pipe
			Nipple

			Cap

Ground Joint

Union

Equipment

Shutoff

Valve*

3" Min.

Natural Gas From Gas Meter (4" W.C. to 10.5" W.C. Pressure) Propane/LP From External Regulator (11" W.C. to 14" W.C. Pressure)

tor has been installed between propane/LP supply and heater. See guidelines under Connect- ing to Gas Supply, page 12.

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.
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

Figure 15 - 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 30.

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.

	all joints. Bubbles forming show a leak.
5.	Correct all leaks at once.
6.	Reconnect heater and equipment shutoff
	valve to gas supply. Check reconnected ﬁt-
	tings for leaks.

Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1.	Close equipment shutoff valve (see Figure 16).
Equipment		Open

Shutoff Valve
		Closed
	Figure 16 - Equipment Shutoff Valve

114683-01B

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Contents What to do if YOU Smell GAS Table of Contents Poisoning may lead to death Safety InformationLocal Codes Product FeaturesUnpacking Providing Adequate Ventilation AIR for Combustion VentilationFollowing are excerpts from National Fuel Unusually Tight ConstructionDetermining if You Have a Conﬁned or Unconﬁned Space Determining FRESH-AIR Flow for Heater LocationVentilation AIR InstallationCheck GAS Type Ventilation Air From Inside BuildingLocating Heater Installation ItemsThermostat Sensing Bulb Thermostat Models Only Installing Heater to WallMounting Bracket Removing Front Panel Of HeaterPlacing Heater On Mounting Bracket Attaching To Wall Anchor MethodInstalling Bottom Mounting Screws Installing Bottom Mounting ScrewsTypical Inlet Pipe Diameter Connecting to GAS SupplyTest Pressures Equal To or Less Than Checking GAS ConnectionsPsig 3.5 kPa EquipmentMake sure control knob of heater is in the OFF position Open equipment shutoff valve see ,Operating Heater Manual Control Models For Your Safety Read Before LightingLighting Instructions To Turn OFF GAS To Appliance Manual Lighting ProcedureShutting Off Heater Shutting Off Burner Only pilot stays litThermostat Control Operation Pilot Flame Pattern Inspecting HeaterBurner Flame Pattern Check pilot ﬂame pattern and burner ﬂame pat- tern oftenODS/PILOT and Burner Cleaning MaintenanceBurner Pilot AIR Inlet CabinetObserved Problem Possible Cause Remedy TroubleshootingSafety interlock system has Out when control knob is re Control knob not pressedDelayed ignition of burner Manifold pressure is too low Burner oriﬁce is clogged Clean burner see CleaningOperation Processes Hours of operation Or shut off Qualiﬁed service personTurning control knob to Air passageways on heaterStatement above Gas leak. See WarningBG30N, FG30N, GG30N, RG30N, GMG30N SpecificationsBG30P, FG30P, GG30P, RG30P, GMG30P Technical Service Service HintsService Publications Replacement Parts Parts Under WarrantyIllustrated Parts Breakdown NJF 8C Parts ListIllustrated Parts Breakdown NJF 8C Equipment Shutoff Valve GA5010 AccessoriesFAN Kits GA3250T For all models. Equipment shutoff valve with 1/8 NPT tapParts Centrals Keep this Warranty Warranty InformationLimited Warranty VENT-FREE Residential GAS Heaters