Desa EFS10RNA, CGCF10NR Determining FRESH-AIR Flow for Fireplace Location, Ventilation AIR

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AIR FOR COMBUSTION

AND VENTILATION

Continued

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. (vol- ume of space)

If additional ventilation to adjoining room is sup- plied 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.

Example:

Gas water heater

 

30,000

Btu/Hr

Vent-free fireplace

+

10,000

Btu/Hr

Total

=

40,000

Btu/Hr

4.Compare the maximum Btu/Hr the space can sup- port 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 example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support. You must provide ad- ditional fresh air. Your options are as follows:

A.Rework worksheet, adding the space of an adjoin- ing room. If the extra space provides an uncon- fined 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 unconfined space. You will need no additional fresh air ventilation.

WARNING: If the area in which the heater 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/NFPA 54 Section

5.3or applicable local codes.

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining uncon- fined space. When ventilating to an adjoining un- confined space, you must provide two permanent 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, page 9). You can also remove door into adjoining room (see option 3, Fig- ure 4, page 9). Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Com- bustion and Ventilation for required size of ventila- tion grills or ducts.

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent open- ings: 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.

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112462-01C

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Contents What to do if YOU Smell GAS Table of Contents Safety Information Local Codes Product Features Optional Remote Control AccessoriesProduct Identification UnpackingAssembly Assembling FireplaceShoulder Screw Screen Hood Tabs Louver Baffle Sheet Metal Screws Firebox TopConfined and Unconfined Space AIR for Combustion VentilationProviding Adequate Ventilation Determining FRESH-AIR Flow for Fireplace Location Ventilation AIRDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside BuildingInstallation Ventilation Air from Inside BuildingFireplace Clearances Installation ItemsCheck GAS Type Example BUILT-IN Fireplace InstallationMinimum Clearance to Combustible Materials Flanges Mantel Clearances for Built-In InstallationIf you have not assembled firebox, follow in- structions on Optional Mantel Installation Installing Optional Blower Accessory GA3450T Installing Blower AccessoryAssembling Trim Trim shipped with mantel Removing Upper LouverPower Cord Snap Bushing Wire HarnessScrew Wiring Routing Hole Baffle For Built-In Installation Extension CordConnecting to GAS Supply Attaching Wood Base to Solid FloorIncluded DoorPropane/LP Connecting Fireplace to GAS Supply Installation Items NeededChecking GAS Connections Test Pressures In Excess Of 1/2 Psig 3.5 kPaTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Equipment Shutoff ValveClosed Equipment Gas Regulator orInstalling 9-Volt Battery in Hand-Held Remote Control Unit Optional Wireless HAND-HELD Remote Control AccessoriesInstalling Receiver Terminal W Terminal R R Control Valve Jumper Wire One terminal of 25 ft. wireFeed wires through rectangular slots Shoulder Screw Log Screen Installing LOG SET and ScreenOperating Fireplace Lighting Instructions Electronic Ignitor Button Control KnobThermocouple Ignitor Electrode Pilot Burner Ignitor ThermocoupleManual Lighting Procedure REMOTE-READY Models For Your Safety Read Before LightingTo Turn OFF GAS To Appliance Thermostat Control OperationPilot Burner Ignitor Electrode Control Knob Electronic IgnitorPilot Ignitor Burner Electrode Optional HAND-HELD Remote Operation ON/OFF Series Model GhrcbGWMT1 Wall Mounted Thermostat Optional GWMS2 Wall Mounted Switch OptionalThermostat Series Model Ghrctb Inspecting Burners Pilot Flame PatternBurner Flame Pattern Pilot Burner ThermocoupleCleaning Maintenance Burner Injector Holder and Pilot AIR Inlet HoleLOG SET CabinetObserved Problem Possible Cause Remedy TroubleshootiingTroubleshooting Bris. If found, clean burner Residues from manufacturTial operation Hours of operationGas leak. See Warning Specifications Wiring DiagramReplacement Parts Service HintsInstall Battery According To This Illustration Illustrated Parts BreakdownParts List THERMOSTAT-CONTROLLED Models935 Parts Available not Shown Accessories WALL-MOUNT ON/OFF Switch GWMS2 Receiver and HAND-HELD Thermostat Remote Control KIT GhrctbReceiver and HAND-HELD Remote Control KIT Ghrcb Corner Mantel with Full Hearth Base112462-01C 112462-01C Limited Warranty VENT-FREE Compact Classic Hearth Fireplace Warranty InformationKeep this Warranty