Desa EFS33NR, EFS33NRA, EFS33PR, EFS33PRA, VSGF33NR, VSGF33NRA, VSGF33PR, VSGF33PRA

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AIR FOR COMBUSTION AND VENTILATION

Providing Adequate Ventilation Determining Fresh-Air Flow for Heater Location

5

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 following ventilation classifications:

1.Unusually Tight Construction

2.Unconfined Space

3.Confined Space

The information on pages 4 through 6 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 outside 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 win- dows 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 6.

If your home does not meet all of the three criteria above, proceed to Determining Fresh-Air Flow For Heater Loca- tion, 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 communicating 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 passageways 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 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)

If additional ventilation to adjoining room is supplied with grills or open- ings, 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 = (Maximum Btu/Hr the space

can support)

Example: 3,168 cu. ft. (volume of space) x 20 = 63,360 (maximum Btu/Hr the space can support)

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

Vent-free heater

 

_____________ 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. Direct-vent draws com- bustion air from the outdoors and vents to the outdoors.

Example:

 

 

 

Gas water heater

 

40,000

Btu/Hr

Vent-free heater

+

33,000

Btu/Hr

Total

=

73,000

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: 63,360 Btu/Hr (maximum the space can support) 73,000 Btu/Hr (actual amount of Btu/Hr used)

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107172-01J

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Contents What to do if YOU Smell GAS OWNER’S Operation and Installation ManualSafety Information Table of ContentsProduct Identification Log Base Assembly VSGF33NRA ShownLocal Codes Product FeaturesUnpacking AIR for Combustion and VentilationDetermining FRESH-AIR Flow for Heater Location Providing Adequate VentilationUnusually Tight Construction Confined and Unconfined SpaceVentilation Air From Outdoors Ventilation AIRVentilation Air From Inside Building Installing Hood InstallationCheck GAS Type Electrical HookupConventional Fireplace Installation Installation ClearancesIncluded with Mantel Accessory Assembling and Attaching Optional Brass TrimPlacing Hearth Base Accessory Against Wall Mantel Clearances for Built-In Installation BUILT-IN Fireplace InstallationInstallation Items Needed Installing GAS Piping to Fireplace LocationGas Connection Connecting Fireplace to GAS SupplyChecking GAS Connections Pressure Testing gas Supply Piping systemPressure Testing Fireplace Gas Connections Place front log on top of the grate. Make sure the notches Installing Fireplace Screen Lighting Instructions For Your Safety Read Before LightingOperating Fireplace To Turn OFF GAS To Appliance Manual Lighting ProcedureOptional HAND-HELD Remote Operation ON/OFF Series Models Ghrcb and CghrcbPilot Flame Pattern Inspecting BurnersOptional Blower Operation Cleaning Burner Injector Holder and Pilot AIR Inlet Hole Cleaning MaintenanceMain Burner Front Burner Flame PatternSpecifications Wiring DiagramLogs Models EFS33NR, EFS33NRA, VSGF33NR, and VSGF33NRAObserved Problem Possible Cause Remedy TroubleshootingMaintenance, For more Visit www Com Illustrated Parts Breakdown Not a field replaceable part Parts ListModels EFS33NR, EFS33NRA, VSGF33NR, VSGF33NRA KEY Part Number Description QTY Accessories Corner Hearth Base Cabinet Mantel and Full Hearth BaseHardwood Hearth Base Laminate Trim for Hearth or MantelTechnical Service Replacement PartsService Hints Owners Registration Form Tape 107172-01J Warranty Information