Desa VsGF28nTF, VsGF28PTF Air For Combustion Ventilation, Providing Adequate Ventilation

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Air For Combustion

and Ventilation

WARNING: This firebox 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.

Today’s 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, fireboxes, 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 7 through 9 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 (6 x 10-11kg 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 9.

If your home does not meet all of the three criteria above, proceed to Determining Fresh-Air Flow for Heater Location, page 8.

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.

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Contents What to do if YOU Smell GAS Thermostatically-controlled Models VSGF28NTF and VSGF28PTFTable of Contents Safety InformationSafety Information Local Codes Product Features Product IdentificationUnpacking Unusually Tight Construction Air For Combustion VentilationProviding Adequate Ventilation Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location Determining if You Have a Confined or Unconfined SpaceVentilation Air From Inside Building InstallationVentilation AIR Ventilation Air From OutdoorsInstalling Hood Check GAS TypeInstallation Clearances Conventional Fireplace InstallationActual Framing Height Built-In Firebox InstallationChecking Gas Connections, Front WidthInstalling Gas Piping to Fireplace Location, Mantel Clearances for Built-In InstallationInstalling Gas Piping to Fireplace Location Installation Items NeededNatural Gas Connecting Fireplace to Gas SupplyAccessories, Propane/LPChecking GAS Connections Test Pressures Equal To or Less Than Psig 3.5 kPaInstalling Logs Pressure Testing Fireplace Gas ConnectionsFor Your Safety Read Before Lighting Operating FireplaceThermostat Models Thermostat Control Operation Lighting InstructionsTo Turn OFF GAS To Appliance Shutting Off FireplaceBlower Operation Manual Lighting ProcedureInspecting Burners Pilot Flame PatternCleaning Maintenance Burner Injector Holder Pilot Air Inlet HoleLogs Wiring DiagramSpecifications Model VSGF28NTATroubleshooting Observed Problem Possible Cause RemedyIng and Maintenance, Maintenance, Stalling Logs, See Checking Gas Connec Service Hints Replacement PartsTechnical Service AccessoriesCleaning KIT GCK Duplex Outlet KIT GA3555Illustrated Parts Breakdown Models VSGF26NTF, VSGF26PTFParts List Models VSGF28PTF and VSGF28NRF Parts List Warranty Information Keep this WarrantyLimited Warranty VENT-FREE GAS Fireplace System
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