Desa LMFP33NR installation manual Ventilation AIR, Ventilation Air From Inside Building

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6

AIR FOR COMBUSTION AND VENTILATION

Determining Fresh-Air Flow for Heater Location (Cont.) Ventilation Air

AIR FOR COMBUSTION AND VENTILATION

Continued

The space in the example on page 5 is a confined space because the actual Btu/Hr used is more than the maximum 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 adjoining room. If the

extra space provides an unconfined space, remove door to adjoining

room or add ventilation grills between rooms. See Ventilation Air From

Ventilation

Grills

Into Adjoining

12"

Ventilation Grills Into Adjoining Room,

Inside Building.

Room,

Or

Option 2

Option 1

Remove

B.

Vent room directly to the outdoors. See Ventilation Air From Outdoors.

C.

Install a lower Btu/Hr heater, 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 operated is smaller than that defined as an uncon- fined space or if the building is of unusually tight construction, provide adequate combustion and ven- tilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 Sec- tion 5.3 or applicable local codes.

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined 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 3). You can also remove door into adjoining room (see option 3, Figure 3). 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.

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.

Door into Adjoining Room, Option 3

12"

Figure 3 - Ventilation Air from Inside Building

Ventilated

Outlet Attic

Air

Outlet

 

Air

To Attic

 

To

Crawl

Space

Inlet

Air

Inlet Air

 

Ventilated

 

 

Crawl Space

 

 

Figure 4 - Ventilation Air from Outdoors

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASTable of Contents Safety InformationLog Base Assembly Product IdentificationUnpacking Product FeaturesLocal Codes AIR for Combustion and VentilationUnusually Tight Construction Providing Adequate VentilationDetermining FRESH-AIR Flow for Heater Location Confined and Unconfined SpaceVentilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Check GAS Type InstallationInstalling Hood Electrical HookupInstallation Clearances Included with Mantel AccessoryAssembling and Attaching Optional Brass Trim Conventional Fireplace Installation Installing Cabinet MantelBUILT-IN Fireplace Installation Actual Framing Height 32 3 Front Width DepthSupport Bracket Firebox Wrapper Shield Power Screws Cord Installing GAS Piping to Fireplace Location Mantel Clearances for Built-In InstallationInstallation Items Needed Connecting Fireplace to GAS Supply Gas ConnectionPressure Testing gas Supply Piping system Checking GAS ConnectionsPressure Testing Fireplace Gas Connections Check all other internal joints for leaksInstalling Logs Installing Logs 1Installing Battery into Remote For Your Safety Read Before LightingInstalling Batteries in Receiver Operating HeaterShutting Off Heater Manual Lighting ProcedureTo Turn OFF GAS To Appliance Shutting Off Burners Only pilot stays litHAND-HELD Remote Operation Burner Primary AIR Holes Inspecting BurnersPilot Flame Pattern Main BurnerCleaning Maintenance Cleaning Burner Injector Holder and Pilot AIR Inlet HoleLogs Troubleshooting Observed Problem Possible Cause RemedyMaintenance, Gas leak. See Warning statement Technical Service Wiring DiagramSpecifications Service HintsIllustrated Parts Breakdown Models LMFP33PRParts List KEY Part Number LMFP33PR LMFP33NR Description QTYFirebox LMFP33PR LMFP33NR Firebox LMFP33PR and LMFP33NR KEY Part Number Description QTYEquipment Shutoff Valve GA5010 AccessoriesBlower Accessory GA3750A GA3700TA Series Information VideoOwners Registration Form Postage Required 111604-01A Warranty Information