Desa CDR3924NT Mantel Clearances, Floor Clearances, Determining Minimum Mantel Clearance

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INSTALLATION

Continued

MANTEL CLEARANCES

In addition to meeting noncombustible material clearances, you must also meet required clearances between fireplace opening and mantel shelf. If you do not meet the clearances listed below, you will need a hood.

Determining Minimum Mantel Clearance

If you meet minimum clearance between mantel

10"

8"

6"

2 1/2"

Minimum Non-

 

 

(A)

 

Combustible

 

Material

12"

 

 

 

 

 

 

 

Mantel Shelf

18"

 

20"

22"

 

 

 

 

 

Underside of

Mantel Shelf

All minimum distances are in inches

Log Set

24" All Models

Top of Fireplace

Opening

shelf and top of fireplace opening, a hood is not required (see Figure 6).

Determining Minimum Mantel Clearance When Using a Hood

If minimum clearances in Figure 6 are not met, you must have a hood. When using a hood there are still certain minimum mantel clearances required.

Minimum Non-

Distances to

Combustible

Underside of

Material Height

Mantel

Figure 6 - Minimum Mantel Clearances

Without Using Hood

Follow minimum clearances shown in Figure 7 when using hood.

NOTICE: Surface temperatures of adjacent walls and mantels become hot during operation. Walls and mantels above the firebox may become hot to the touch. If installed properly,

12"

10"

8"

6"

2 1/2"

Minimum

Noncombustible

Material8"

Min.

Mantel Shelf

Underside

of Mantel

Shelf

All minimum distances are in inches

12"

15"

18"

20"

these temperatures meet the requirement of the national product standard. Follow all minimum clearances shown in this manual.

Hood (GA6050, GA6052 or GA6053)

Distances

Underside of

Mantel

Top of

Fireplace

Opening

NOTICE: If your installation does not meet the minimum clear- ances shown, you must do one of the following:

operate the logs only with the flue damper open

raise the mantel to an accept- able height

remove the mantel

FLOOR CLEARANCES

A.If installing appliance on the floor level, you must maintain the minimum distance of 14" to combustibles (see Figure 8).

B.If combustible materials are less than 14" to the fireplace, you must install appliance at least 5" above the combustible flooring (see Figure 9).

Figure 7 - Minimum Mantel Clearances

When Using Hood

Combustible

14" Material

Min.

Noncombustible Material

Figure 8 - Minimum Fireplace Clearances

If Installed at Floor Level

Hearth

Combustible Material

5"

Min.

Figure 9 - Minimum Fireplace Clearances

Above Combustible Flooring

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Contents What to do if YOU Smell GAS Thermostat Models CDR3924NT and CDR3924PTTable of Contents Safety Information Local Codes Product Features Product IdentificationUnusually Tight Construction AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Confined and Unconfined SpaceVentilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors Installation Check GAS TypeRear Installation and Clearances for VENT-FREE OperationLog WidthFloor Clearances Determining Minimum Mantel Clearance When Using a HoodMantel Clearances Determining Minimum Mantel ClearanceInstalling Heater Base Assembly Installation Items NeededConnecting to GAS Supply External Regulator With Vent Pointing DownNatural From Gas Checking GAS ConnectionsPropane/LP From Test Pressures In Excess Of 1/2 Psig 3.5 kPaInstalling Logs Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaAttaching Grate to Base Assembly Adding Lava RockOperating Heater For Your Safety Read Before LightingLighting Instructions To Turn OFF GAS To Appliance Manual Lighting ProcedureThermostat Control Operation Pilot Flame Pattern Technical ServiceInspecting Burners Burner Flame PatternsBurner Injector Holders and Pilot AIR Inlet Holes Cleaning MaintenanceLogs Troubleshooting Observed Problem Possible Cause RemedyMaintenance, Cold Minute Air in gas line Operate burners until air is Gas leak. See Warning Optional Positioning Thermostat Sensing Bulb For Masonry and FACTORY- Built Metal FireplaceService Hints SpecificationsReplacement Parts AccessoriesIllustrated Parts Breakdown Models CDR3924PT and CDR3924NTParts List Keep this Warranty Warranty InformationLimited Warranty Comfort Glow VENT-FREE GAS LOG Heaters