Desa VP16TA, VN18A, VP16A, VP26A AIR for Combustion Ventilation, Providing Adequate Ventilation

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AIR FOR COMBUSTION

AND VENTILATION

WARNING: This heater shall notbeinstalledinaconfinedspace or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. Read the following instructionstoinsureproperfresh 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 (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 these three cri- teria, 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.

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.

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Confined or Unconfined Space

Use this work sheet to determine if you have a confined or unconfined space.

Space: Includes the room in which you will install heater plus any adjoining rooms with doorless pas- sageways or ventilation grills between the rooms.

113052-01D

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Contents Model VN30A Shown VN30A, VN30TA, VP16ITA, VP22ITATable of Contents Safety Information Unpacking Product FeaturesLocal Codes Determining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationProviding Adequate Ventilation Ventilation Air From Inside Building Ventilation AIRInstallation Items InstallationCheck GAS Type Locating HeaterThermostat Sensing Bulb Installing Heater to WallThermostat Models Only Mounting BracketMarking Screw Locations Methods For Attaching Mounting Bracket To Wall5 Plaque Heaters Plaque HeaterPlacing Heater On Mounting Bracket Installing Bottom Mounting ScrewsMounting Base Feet to Floor Where required by local code Connecting to GAS SupplyMounting Heater to Floor Mounting Base Feet to HeaterPropane/LP Checking GAS ConnectionsNatural Gas Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Test Pressures In Excess Of 1/2 Psig 3.5 kPaLighting Instructions NON-THERMOSTAT Models For Your Safety Read Before LightingOperating Heater Thermostat Models For Your Safety Read Before Lighting Manual Lighting ProcedureTo Select Heating Level To Turn OFF GAS To ApplianceIgnitor Button Control Knob If pilot does not lightTurn thermostat control knob counter Shutting Off Heater Thermostat OperationPlaque Burner Flame Pattern Inspecting HeaterPilot Flame Pattern ODS/PILOT and Burner Cleaning MaintenanceBurner Pilot AIR Inlet CabinetObserved Problem Possible Cause Remedy TroubleshootingODS/pilot lights but flame Gas leak. See Warning When heated, vapors fromSpecifications Illustrated Parts Breakdown Parts List Cabinet Body Models VP16ITA and VP22ITA KEY Part Number VP16ITA VP22ITA Description QTY Burner Assembly Models VP16A and VN18A Illustrated Parts Breakdown and Parts ListODS/Pilot Burner Assembly VP26A, VN30A Burner Assembly Models VP26A and VN30ABurner Assembly VP22ITA Burner Assembly VP16ITA Burner Assembly Models VP16ITA and VP22ITABurner Assembly Models VP16TA, VN18TA, VP26TA and VN30TA Service Publications Service Hints Replacement PartsTechnical Service Parts Under WarrantyParts Central AccessoriesFAN Kits GA3250T Equipment Shutoff Valve GA5010113052-01D 113052-01D Limited Warranty Vanguard VENT-FREE Infrared GAS Heaters Warranty InformationKeep this Warranty
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