Desa 30, R, V, T Minimum Noncombustible Material Clearances, If Not Using Mantel

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INSTALLATION

Installation and Clearances for Vent-Free Operation (Cont.)

INSTALLATION

Continued

Carefully follow the instructions below. This will ensure safe installation into a masonry, UL127-listed manufactured fireplace, or listed vent-free firebox.

Minimum Clearances For Side Combustible Material, Side Wall, and Ceiling

A.Clearances from the side of the fireplace cabinet to any combus- tible material and wall should follow diagram in Figure 4.

Example: The face of a mantel, bookshelf, etc. is made of combustible material and protrudes 3 1/2" from the wall. This combustible material must be 4" from the side of the fireplace cabinet (see Figure 4).

Note: When installing your gas logs into a manufactured firebox, follow firebox manufacturer’s instructions for minimum clearances to combustible materials.

B.Clearances from the top of the fireplace opening to the ceiling should not be less than 42 inches.

Example

*

*Minimum 16 inches from Side Wall

Figure 4 - Minimum Clearance for Combustible to Wall

NOTICE: Manual control heaters may be used as a vented product. If so, you must always run heater with chimney flue damper open. If running heater with damper open, noncombustible material above fire- place opening is not needed. Go to Installing Damper Clamp Accessory for Vented Operation, page 10.

noncombustible material behind it. Noncombustible material must extend at least 8" up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory (24" and 30" Models Only). See Figure 5 for minimum clearances.

If Using Mantel

You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have noncombustible material behind it. Noncombustible material must extend at least 8 inches up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory (24" and 30" Models Only). Even if noncombustible material is more than 12", you may need the hood accessory to deflect heat away from your mantel shelf. See Figure 5 and Figures 6 and 7, page 9, for minimum clearances.

IMPORTANT: If you cannot meet these minimum clearances, you must operate heater with chimney flue damper open. Go to Install- ing Damper Clamp Accessory for Vented Operation, page 10.

Noncombustible

Requirements for

Material Distance (A)

Safe Installation

 

 

12" or more

Noncombustible material OK.

Between 8" and 12"

24" or 30" Models: Install fireplace

 

hood accessory (GA6050, GA6052, or

 

GA6053 see Accessories, page 36).

 

18" Model: Noncombustible

 

material OK.

Less than 8"

Noncombustible material must be

 

extended to at least 8". See Between

 

8" and 12", above. If you cannot

 

extend material, you must operate

 

heater with flue damper open.

 

 

Heat Resistant

Material

(A)

Minimum Noncombustible Material Clearances

If Not Using Mantel

Note: If using a mantel proceed to If Using Mantel. If not using a mantel, follow the information on this page.

You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have

Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace

For..com

110882-01C

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASTable of Contents Safety InformationProduct Identification Product IdentificationOptional Remote Control Accessories Product FeaturesLocal Codes UnpackingDetermining if You Have a Confined or Unconfined Space Determining FRESH-AIR Flow for Heater LocationConfined and Unconfined Space Ventilation Air From Outdoors Ventilation AIRVentilation Air From Inside Building Check GAS Type InstallationInstallation and Clearances for VENT-FREE Operation If Not Using Mantel Minimum Noncombustible Material ClearancesDetermining Minimum Mantel Clearance When Using a Hood Mantel ClearancesFloor Clearances Determining Minimum Mantel ClearanceInstalling Damper Clamp Accessory for Vented Operation Installing Heater Base AssemblyInstallation Items Needed Area of Various Standard Round FluesAttaching Base to Fireplace Floor Remote-Ready Models Only Connecting to GAS Supply External Regulator With Vent Pointing DownPressure Testing gas Supply Piping system Checking GAS ConnectionsInstalling Logs Pressure Testing Heater Gas ConnectionsInstalling Front Log #1 Operating Heater Lighting InstructionsManual Lighting Procedure To Turn OFF GAS To ApplianceThermostat Control Operation Shutting Off HeaterREMOTE-READY Models For Your Safety Read Before Lighting Variable Control OperationControl Knob and Ignitor Button Location Optional HAND-HELD Remote Operation Pilot Propane/LP Pilot NaturalManual Mode Auto Thermostatic ModeSafety Features ON/OFF Series Model GhrcbFront Burner Flame Pattern Inspecting BurnersPilot Flame Pattern Cleaning Maintenance Cleaning Burner Injector Holder and Pilot AIR Inlet HoleLogs Main BurnerTroubleshooting Observed Problem Possible Cause RemedyRefer to Air for Combustion and Venti Gas leak. See Warning statement Thermostat-Controlled Models Only Optional Positioning of Thermostat Sensing BulbFor Masonry and FACTORY-BUILT Metal Fireplace Specifications Remote-ReadyWiring Diagram Replacement Parts Service HintsTechnical Service Parts Under WarrantyIllustrated Parts Breakdown Parts List Variable MANUALLY-CONTROLLED Split OAK ModelsTHERMOSTAT-CONTROLLED Models NVS18NT, NVS18PT THERMOSTAT-CONTROLLED Models Items 4 REMOTE-READY Variable Control Accessories Owners Registration Form Postage Required 110882-01C Warranty Information
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