Desa CLD3924NT, CLD3018N AIR for Combustion and Ventilation, Providing Adequate Ventilation

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CGS2718N, CGS3124N, CLD3018N,

CLD3924NT, and CCL3930NT(A)

UNVENTED NATURAL GAS LOG HEATER

AIR FOR COMBUSTION AND VENTILATION

WARNING: This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ven- tilation air. Read the following in- structions to insure proper fresh air for this and other fuel-burning appliances in your home.

Today’s homes are built more energy effi- cient than ever. New materials, increased insulation, and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months, home owners want their homes as airtight as possible.

While it is good to make your home energy efficient, your home needs to breathe. Fresh air must enter your home. All fuel-burning appliances need fresh air for proper com- bustion and ventilation.

Exhaust fans, fireplaces, clothes dryers, and fuel burning appliances draw air from the house to operate. You must provide ad- equate fresh air for these appliances. This will insure proper venting of vented fuel- burning appliances.

PROVIDING ADEQUATE VENTILATION

The following are excerpts from National Fuel Gas Code. NFPA 54/ANS Z223.1, Sec- tion 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 win- dows 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 de- fined as construction where:

a.walls and ceilings exposed to the outside atmosphere have a con- tinuous water vapor retarder with a rating of one perm (6x10-11kg per pa-sec-m2) or less with open- ings 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, be- tween sole plates and floors, be- tween wall-ceiling joints, be- tween wall panels, at penetra- tions for plumbing, electrical, and gas lines, and at other openings.

If your home meets all of the three criteria above, you must provide ad- ditional fresh air. See Ventilation Air From Outdoors, page 6.

If your home does not meet all of the three criteria above, proceed to De- termining Fresh-Air Flow For Heater Location on page 5.

Confined Space and Unconfined Space

The National Fuel Gas Code (ANS Z223.1, 1992 Section 5.3) 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 in- stalled*, through openings not furnished with doors, are considered a part of the unconfined space.

This heater shall not be installed in a con- fined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air.

*Adjoining rooms are communicating only if there are doorless passageways or ventila- tion grills between them.

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Contents Winchester Oak Model Shown What to do if YOU Smell GASPatent Pending Safety Information Unvented Natural GAS LOG HeaterProduct Features Product IdentificationLocal Codes UnpackingAIR for Combustion and Ventilation Providing Adequate VentilationUnusually Tight Construction Confined Space and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From InsideBuilding Ventilation Air From OutdoorsCheck GAS Type InstallationMinimum Wall and Ceiling Clearances see Figure If Not Using Mantel If Using MantelMinimum Noncombustible Material Clearances Floor Clearances Mantel ClearancesDetermining Minimum Mantel Clearance Installing Damper Clamp Accessory for Vented Operation Installing Heater Base AssemblyInstallation Items Needed Chimney Minimum Permanent Height ft Flue Opening sq. insConnecting to GAS Supply Attaching Flexible Gas Hose to Heater Gas RegulatorPressure Testing gas Supply Piping system Pressure Testing Heater Gas ConnectionsChecking GAS Connections Test Pressures In Excess Of 1/2 PsigInstalling Logs on Models CGS2718N and CGS3124N Installing Back LogInstalling Logs on Models CLD3018N and CLD3924NT Damage or personal injuryInstalling Logs on Model CCL3930NTA Front Log #1 Grate Fingers Grate BaseOperating Heater For Your Safety Read Before LightingLighting Instructions Manual Lighting Procedure Variable Control OperationTo Turn OFF GAS To Appliance Shutting Off HeaterInspecting Burners Thermostat Control OperationPilot Flame Pattern Burner Primary AIR HolesCleaning and Maintenance Cleaning Burner Injector Holder and Pilot AIR Inlet HoleMain Burner ODS/PILOT and BurnerTroubleshooting Observed Problem Possible Cause RemedyMaintenance, Top Gas leak. See Warning statement atOptional POSI- Tioning of THER- Mostat Sensing Bulb For Masonry and Factory- built Metal FireplaceSpecifications Technical ServiceService Hints Replacement PartsAccessories Parts CentralManual Shutoff Fireplace HoodIllustrated Parts Breakdown Parts List CGS2718N CGS3124NUnvented Natural GAS LOG Heater CLD3018N CLD3924NT KEY CLD3924NT Part Number Description QTY CCL3930NTA CCL3930NT CCL3930NTA CCL3930NT CCL3930NTAWarranty Information
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