Desa VDCFTNB Ventilation AIR, Ventilation Air From Inside Building, Ventilation Air From Outdoors

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AIR FOR COMBUSTION

AND VENTILATION

Continued

Example:

 

30,000

Gas water heater

 

 

_________ Btu/Hr

Vent-free fireplace

+

10,000

 

_________ Btu/Hr

Total

=

40,000

 

_________ Btu/Hr

4.Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.

_________ Btu/Hr (maximum the space can support)

_________ Btu/Hr (actual amount of Btu/Hr used)

Example: 35,840 Btu/Hr (maximum the space can support)

40,000 Btu/Hr (actual amount of Btu/Hr used)

The space in the above example is a confined space because the actual Btu/Hr used is more than the maxi- mum Btu/Hr the space can support. You must provide additional fresh air. Your options are as follows:

A.Rework worksheet, adding the space of an adjoin- ing room. If the extra space provides an unconfined space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air From Inside Building.

B.Vent room directly to the outdoors. See Ventila- tion Air From Outdoors.

C.Install a lower Btu/Hr fireplace, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an un- confined space. You will need no additional fresh air ventilation.

WARNING: If the area in which the fireplace may be oper- ated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1/NFPA54 Section 5.3 or applicable local codes.

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining un- confined space. When ventilating to an adjoining unconfined space, you must provide two perma- nent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 4). You can also remove door into adjoining room (see option 3, Figure 4). Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

 

 

12"

Ventilation

 

Ventilation Grills

Grills

 

Into Adjoining

Or

Into Adjoining Room,

Room,

Option 2

Remove

Option 1

 

Door into

 

 

 

 

Adjoining

 

 

Room,

 

 

Option

 

 

3

 

12"

Figure 4 - Ventilation Air from Inside

Building

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces. Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

IMPORTANT: Do not provide openings for inlet or outlet air into attic if attic has a thermostat- controlled power vent. Heated air entering the attic will activate the power vent.

 

Outlet

Ventilated

 

Attic

 

Air

 

 

Outlet

 

 

Air

 

To Attic

 

 

 

 

To

 

 

Crawl

Inlet

 

Space

 

 

Air

 

 

 

Inlet Air

Ventilated

 

Crawl Space

 

 

Figure 5 - Ventilation Air from Outdoors

8

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Contents Shown with Optional Cabinet Mantel/Hearth Base Accessory What to do if YOU Smell GASTable of Contents Safety Information Safety Information Product Features Product IdentificationLocal Codes UnpackingHood Assembly Sheet Metal Screws Hood Louver Firebox TopTools Required Phillips screwdriver Shoulder Screw ScreenDetermining FRESH-AIR Flow for Fireplace Location AIR for Combustion VentilationProviding Adequate Ventilation Ventilation Air From Outdoors Ventilation AIRVentilation Air From Inside Building Installation Check GAS TypeInstallation Items Fireplace ClearancesMinimum Clearance to Combustible Materials TopBUILT-IN Fireplace Installation Actual Framing HeightFront Width DepthOptional Mantel Installation Mantel ShelfSide of Firebox Top Louver Bottom LouverInstalling Optional Blower Accessory GA3450TA Installing Blower Accessory Switch Power CordPlate Remote Wire Blower Harness Bracket Lower Louver Door SwitchBlower Bracket For Built-In InstallationExtension Cord Connecting to GAS Supply Checking GAS Connections Connecting Equipment Shutoff Valve to Heater ControlInstallation Items Needed Pressure Testing Fireplace Gas Connections Equipment Shutoff Valve Propane/LP Supply TankEquipment Open Shutoff Valve Closed Gas Regulator or Gas Control Valve EquipmentOptional Wireless HAND-HELD Remote Control Accessories Installing ReceiverReceiver Volt Terminal Battery Wires Battery Clip Installing 9-Volt Battery in Hand-Held Remote Control UnitControl Valve To Wall Thermostat or Switch Or Switch Feed wires through rectangular slotsInstall the base onto the wall with the pro- vided screws Remove jumper wire from control valve see ,Installing LOG SET and Screen For Your Safety Read Before LightingOperating Fireplace Lighting InstructionsManual Lighting Procedure To Turn OFF GAS To ApplianceThermostat Control Operation Shutting Off FireplaceOperating Blower REMOTE-READY Models For Your Safety Read Before LightingAUTO/OFF/ON Switch Pilot Burner Ignitor Electrode Piezo Flame Control Ignitor Adjustment Knob ButtonPilot Ignitor Burner Electrode Manual Mode Optional HAND-HELD Remote OperationThermostat Series Model HRC200 ON/OFF Series Model HRC100Optional GWMS2 Wall Mounted Switch Optional GWMT1 Wall Mounted ThermostatCleaning Maintenance Inspecting BurnersLOG SET CabinetAir Passageways ExteriorTroubleshooting Observed Problem Possible Cause RemedyBurner orifice is clogged Clean burner see Cleaning Burner orifice is cloggedMote-Ready Models Only Models OnlyWhen heated, vapors from Mote-Ready Models Only Power is lowSlight smoke or odor during Nance,Gas leak. See Warning Remote-Ready Models SpecificationsThermostat Models Illustrated Parts Breakdown Firebox Models VDCParts List Thermostat Models Vdcftpb and Vdcftnb Thermostat Models REMOTE-READY Models Vdcfrnb and Vdcfrpb KEY Part Numbers Vdcfrpb Vdcfrnb Description QTY Accessories Equipment Shutoff Valve GA5010Perimeter Trim KIT GA6095 THERMOSTAT-CONTROLLED Blower KIT GA3450TFor all models. Creates the sound of a real burn- ing fire Receiver and HAND-HELD Remote Control KIT HRC100 SeriesInformation Video Replacement Parts Service HintsTechnical Service Parts Under Warranty116526-01A Limited Warranty VENT-FREE Compact Classic Hearth Warranty InformationKeep this Warranty