Desa FG30NT, FG30P, GG30NT, RG30N AIR for Combustion Ventilation, Providing Adequate Ventilation

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AIR FOR COMBUSTION

AND VENTILATION

WARNING: This heater shall not be installed in a confined space or unusually tight con- struction unless provisions are provided for adequate combus- tion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home.

Todayʼs homes are built more energy efficient than ever. New materials, increased insulation and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months, home owners want their homes as airtight as possible.

While it is good to make your home energy effi- cient, your home needs to breathe. Fresh air must enter your home. All fuel-burning appliances need fresh air for proper combustion and ventilation.

Exhaust fans, fireplaces, clothes dryers and fuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances. This will insure proper venting of vented fuel-burning appliances.

PROVIDING ADEQUATE

VENTILATION

The following are excerpts from National Fuel

Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.

All spaces in homes fall into one of the three fol- lowing ventilation classifications:

1.Unusually Tight Construction

2.Unconfined Space

3.Confined Space

The information on pages 5 through 7 will help you classify your space and provide adequate ventilation.

Unusually Tight Construction

The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction, you must provide additional fresh air.

Unusually tight construction is defined as construction where:

a.walls and ceilings exposed to the out- side atmosphere have a continuous water vapor retarder with a rating of one perm (6x10-11kg per pa-sec-m2) or less with openings gasketed or sealed and

b.weather stripping has been added on openable windows and doors and

c.caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical and gas lines and at other openings.

If your home meets all of the three criteria above, you must provide additional fresh air. See Ventilation Air From Outdoors, page 7.

If your home does not meet all of the three criteria above, proceed to Determining Fresh- Air Flow For Heater Location, page 6.

Confined and Unconfined Space

The National Fuel Gas Code, ANSI Z223.1/ NFPA 54 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms com- municating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space.

*Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them.

114683-01B

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Contents What to do if YOU Smell GAS Table of Contents Poisoning may lead to death Safety InformationUnpacking Product FeaturesLocal Codes 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 ,Lighting Instructions Manual Control Models For Your Safety Read Before LightingOperating Heater 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 WarningBG30P, FG30P, GG30P, RG30P, GMG30P SpecificationsBG30N, FG30N, GG30N, RG30N, GMG30N 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 Limited Warranty VENT-FREE Residential GAS Heaters Warranty InformationKeep this Warranty
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