Desa CDV37N/P, CDV41N/P Installation for Vertical Termination, Flat Ceiling Installation

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CDV37N/P(A,B) AND CDV41N/P(A,B)

DIRECT-VENT FIREPLACE (NATURAL/PROPANE/LP)

VENTING INSTALLATION

Continued

INSTALLATION FOR VERTICAL TERMINATION

1.Determine the route your vertical vent- ing will take. If ceiling joists, roof rafters, or other framing will obstruct the venting system, consider an offset (see Figure 21) to avoid cutting loadbearing members. Note: Pay spe- cial attention to these installation in- structions for required clearances (air space) to combustibles when passing through ceilings, walls, roofs, enclo- sures, attic rafters, etc. Do not pack air spaces with insulation. Also note maxi- mum vertical rise of the venting sys- tem and any maximum horizontal off- set limitations. Offsets must fall within the parameters shown in Figure 8 on page 6.

2.Set the fireplace in desired location. Drop a plumb line down from the ceil- ing to the position of the fireplace exit flue. Mark the center point where the vent will penetrate the ceiling. Drill a small locating hole at this point.

Drop a plumb line from the inside of the roof to the locating hole in the ceil- ing. Mark the center point where the vent will penetrate the roof. Drill a small locating hole at this point.

Roof

Flashing

Wall Strap

45° Elbow

Ceiling Firestop

Figure 21 - Offset with Wall Strap and 45°

Elbows

Flat Ceiling Installation

1.Cut a 10" square hole in the ceiling us- ing the locating hole as a center point. The opening should be framed to 10"x10" (254mm x 254mm) inside di- mensions, as shown in Figure 12 on page 9 using framing lumber the same size as the ceiling joists. If the area above the ceiling is an insulated ceil- ing or a room, nail firestop from the top side. This prevents loose insulation from falling into the required clearance space. Otherwise, install firestop below the framed hole. The firestop should be installed with no less than three nails per side (see Figure 22).

2.Assemble the desired lengths of pipe and elbows necessary to reach from the fireplace flue up through the firestop. All connections must be sealed with high temperature silicone sealant as specified in the second warning state- ment on page 7. Be sure all pipe and elbow connections are fully twist- locked (see Figure 11, page 9).

3.Cut a hole in the roof using the locating hole as a center point. (Cover any ex- posed open vent pipes before cutting hole in roof.) The 10"x10" hole must be measured on the horizontal; actual length may be larger depending on the pitch of the roof. There must be a 1" clearance from the vent pipe to combus- tible materials. Frame the opening as shown in Figure 12 on page 9.

If area above is a room, install firestop above framed hole.

If area above is not a room, install firestop below framed hole.

Figure 22 - Installing Firestop

4.Connect a section of pipe and extend up through the hole.

Note: If an offset is needed to avoid obstructions, you must support the vent pipe every 3 feet. Use wall straps for

this purpose (see Figure 21). Whenever possible, use 45° elbows instead of 90° elbows. The 45° elbow offers less re- striction to the flow of the flue gases and intake air.

5.Place the flashing over the pipe section(s) extending through the roof. Secure the base of the flashing to the roof and framing with roofing nails. Be sure roofing material overlaps the top edge of the flashing as shown in Figure 21. There must be a 1" clearance from the vent pipe to combustible materials.

6.Continue to add pipe sections until the height of the vent cap meets the mini- mum building code requirements de- scribed in Figure 8 on page 6. Note: You must increase vent height for steep roof pitches. Nearby trees, adjoining rooflines, steep pitched roofs, and other similar fac- tors may cause poor draft or down-draft- ing in high winds. Increasing the vent height may solve this problem.

7.Twist-lock the vent cap onto the last section of vent pipe and seal outer pipe connection with high temperature sili- cone sealant as specified in the second warning statement on page 7.

Note: If the vent pipe passes through any occupied areas above the first floor, including storage spaces and closets, you must enclose pipe. You may frame and sheetrock the enclo- surewithstandardconstructionmaterial.Make sure and meet the minimum allowable clear- ances to combustibles. Do not fill any of the required air spaces with insulation.

Cathedral Ceiling Installation

1.Remove shingles or other roof cover- ing as necessary to cut the rectangular hole for the support box. Mark the out- line of the cathedral ceiling support box on the roof sheathing using the locat- ing hole as a center point.

2.Cut the hole 1/8" larger than the sup- port box outline (see Figure 23, page 13).

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Contents For Your Safety For Your Safety What to do if YOU Smell GASCDV37N/PA,B and CDV41N/PA,B Safety Information DIRECT-VENT Fireplace NATURAL/PROPANE/LPProduct Features Product IdentificationLocal Codes Glossary TermsPRE-INSTALLATION Preparation ClearancesLocation and Space Requirements Framing and FinishingPRE-INSTALLATION Preparation General Venting Location of Vent TerminationGeneral Venting Venting Installation Installation PrecautionsInstallation Planning Installing Vent System in a ChaseInstallation for Horizontal Termination Snorkel TerminationVent Pipe Connections Horizontal Termination Configurations Horizontal VentingVenting with Two 90 Elbows Installation for Vertical Termination Flat Ceiling InstallationCathedral Ceiling Installation Vertical Termination Configurations Venting with One 90 ElbowVertical Venting High Altitude Installation Parts Lists for Venting Kits and ComponentsComfort Glow Rigid Venting Comfort Glow Flexible VentingFireplace Installation Installing Optional Blower AccessoryInstalling GA3750/CDA3620T Blowers Check GAS TypePlug in blower power cord Installing GAS Piping to Fireplace Location Installation Items NeededConnecting Fireplace to GAS Supply Pressure Testing Gas Supply Piping SystemChecking GAS Connections Pressure Testing Fireplace Gas Connections Close manual shutoff valve see Fig- ureWireless HAND-HELD Remote Control Installing Battery into ReceiverInstalling 9-Volt Battery in Hand- Held Remote Control Unit REMOVING/REPLACING Glass DoorInstalling Optional Brick Liner CD8037A/ CD8041 Attaching Magnetic Decorative Brass StripsInstalling LOGS, Lava Rock and Glowing Embers Replace glass door. See Removing/Re- placing Glass Door,For Your Safety Read Before Lighting Manual Lighting ProcedureOperating Fireplace Lighting InstructionsOperating Optional Blower Accessory Pilot AssemblyInspecting Burners HAND-HELD Remote OperationCleaning and Maintenance Glass DoorPilot and Burners LogsTroubleshooting Observed Problem Possible CauseObserved Problem Possible Cause Remedy Gas leak. See Warning statement Replacement Parts Wiring DiagramService Hints Technical ServiceSpecifications AccessoriesTHERMOSTATICALLY- Controlled Blower KIT CDA3620T Manual Blower KIT GA3750Illustrated Parts Breakdown CDV41NA,BParts List DIRECT-VENT Fireplace CDV37NA,B CDV41NA,BCDV37PA,B CDV41PA,B DIRECT-VENT Fireplace CDV37PA,B CDV41PA,B Warranty Information