Desa VDCFTNB installation manual AIR for Combustion Ventilation, Providing Adequate Ventilation

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AIR FOR COMBUSTION

AND VENTILATION

Continued

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 6 through 8 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 criteria, you must provide additional fresh air. See Ventilation Air From Outdoors, page 8.

If your home does not meet all of the three criteria above, proceed to Determining Fresh-Air Flow For Fireplace Location, column 2.

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 FIREPLACE 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 fireplace plus any adjoining rooms with doorless pas- sageways or ventilation grills between the rooms.

1.Determine the volume of the space (length x width x height).

Length x Width x Height =__________cu. ft. (volume of space)

Example: Space size 16 ft. (length) x 14 ft. (width) x 8 ft. (ceiling height) = 1792 cu. ft. (volume of space)

If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space.

2.Multiply the space volume by 20 to determine the maximum Btu/Hr the space can support.

__________ (volume of space) x 20 = (Maxi- mum Btu/Hr the space can support)

Example: 1792 cu. ft. (volume of space) x 20 = 35,840 (maximum Btu/Hr the space can support)

3.Add the Btu/Hr of all fuel burning appliances in the space.

Vent-free fireplace

___________ Btu/Hr

Gas water heater*

___________ Btu/Hr

Gas furnace

___________ Btu/Hr

Vented gas heater

___________ Btu/Hr

Gas fireplace logs

___________ Btu/Hr

Other gas appliances* +___________

Btu/Hr

Total

=___________

Btu/Hr

*Do not include direct-vent gas appliances. Di- rect-vent draws combustion air from the outdoors and vents to the outdoors.

116526-01A

www.desatech.com

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Contents What to do if YOU Smell GAS Shown with Optional Cabinet Mantel/Hearth Base AccessoryTable of Contents Safety Information Safety Information Unpacking Product FeaturesProduct Identification Local CodesShoulder Screw Screen Hood AssemblySheet Metal Screws Hood Louver Firebox Top Tools Required Phillips screwdriverProviding Adequate Ventilation AIR for Combustion VentilationDetermining FRESH-AIR Flow for Fireplace Location Ventilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors Check GAS Type InstallationTop Installation ItemsFireplace Clearances Minimum Clearance to Combustible MaterialsDepth BUILT-IN Fireplace InstallationActual Framing Height Front WidthTop Louver Bottom Louver Optional Mantel InstallationMantel Shelf Side of FireboxInstalling Optional Blower Accessory GA3450TA Switch Installing Blower AccessorySwitch Power Cord Plate Remote Wire Blower Harness Bracket Lower Louver DoorExtension Cord For Built-In InstallationBlower Bracket Connecting to GAS Supply Installation Items Needed Connecting Equipment Shutoff Valve to Heater ControlChecking GAS Connections Gas Regulator or Gas Control Valve Equipment Pressure Testing Fireplace Gas ConnectionsEquipment Shutoff Valve Propane/LP Supply Tank Equipment Open Shutoff Valve ClosedInstalling 9-Volt Battery in Hand-Held Remote Control Unit Optional Wireless HAND-HELD Remote Control AccessoriesInstalling Receiver Receiver Volt Terminal Battery Wires Battery ClipRemove jumper wire from control valve see , Control Valve To Wall Thermostat or Switch Or SwitchFeed wires through rectangular slots Install the base onto the wall with the pro- vided screwsLighting Instructions Installing LOG SET and ScreenFor Your Safety Read Before Lighting Operating FireplaceShutting Off Fireplace Manual Lighting ProcedureTo Turn OFF GAS To Appliance Thermostat Control OperationAUTO/OFF/ON Switch REMOTE-READY Models For Your Safety Read Before LightingOperating Blower Pilot Ignitor Burner Electrode Piezo Flame Control Ignitor Adjustment Knob ButtonPilot Burner Ignitor Electrode ON/OFF Series Model HRC100 Manual ModeOptional HAND-HELD Remote Operation Thermostat Series Model HRC200Optional GWMT1 Wall Mounted Thermostat Optional GWMS2 Wall Mounted SwitchInspecting Burners Cleaning MaintenanceExterior LOG SETCabinet Air PassagewaysObserved Problem Possible Cause Remedy TroubleshootingModels Only Burner orifice is clogged Clean burner see CleaningBurner orifice is clogged Mote-Ready Models OnlyNance, When heated, vapors fromMote-Ready Models Only Power is low Slight smoke or odor duringGas leak. See Warning Thermostat Models SpecificationsRemote-Ready Models Firebox Models VDC Illustrated Parts BreakdownParts List Thermostat Models Vdcftpb and Vdcftnb Thermostat Models REMOTE-READY Models Vdcfrnb and Vdcfrpb KEY Part Numbers Vdcfrpb Vdcfrnb Description QTY THERMOSTAT-CONTROLLED Blower KIT GA3450T AccessoriesEquipment Shutoff Valve GA5010 Perimeter Trim KIT GA6095Information Video Receiver and HAND-HELD Remote Control KIT HRC100 SeriesFor all models. Creates the sound of a real burn- ing fire Parts Under Warranty Replacement PartsService Hints Technical Service116526-01A Keep this Warranty Warranty InformationLimited Warranty VENT-FREE Compact Classic Hearth