Hearth and Home Technologies CFX-Crescent owner manual Venting with eight 8 90 Elbows

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Total H (Horizontal run) = 50 feet maximum.

Total V (Vertical run) = 46 feet maximum.

Any combination in between would be applicable.

COMBUSTION

AIR DUCT

40FT

MAXIMUM

COMBUSTION

AIR DUCT

18 FT

MAXIMUM

40 FT

MAXIMUM

Figure 8. Venting with eight (8) 90° Elbows

Unit could have up to eight elbows off the top, with a maximum of 50 feet hori- zontal before any vertical, however, a vertical run of 46 feet maximum could be introduced at any point of the horizontal run and even right off the top of the unit.

16	Heat & Glo • CFX-CRESCENT • 705-900 Rev. P • 12/07

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Contents Installation and Operation Model CFX-CrescentSafety and Warning Information Table of Contents Section Installing the FireplaceApprovals and Codes Getting StartedLog Set Assembly CFX-CrescentService Parts List CFX-Crescent At DepotPre 002182991 Valve Assembly Post 002182991 Valve AssemblyInstallation Codes High Altitude InstallationsApprovals and Codes CodesInstallation of Carbon Monoxide Detectors Requirements for the Commonwealth of MassachusettsGetting Started Diagram of the CFX-CRESCENT Installing the Fireplace Locating the fireplaceClearance Requirements 66 5/8 33 1/4 47 1/8 19 5/8 35 1/2Framing Dimensions Step Framing FireplaceVent System Approvals Identifying Vent ComponentsSL-45D SL-90D 17-24 11 3/4 Straight UP Venting with eight 8 90 Elbows Attach the First Vent Component to the Starting Collars Attaching the First Vent Component to the Starting CollarsAdding Venting Components Install Support Brackets Continue Adding Vent ComponentsInstalling Support Brackets 4. Install Firestops 10 Hole and Vent Pipe 9 Hole & New Framing Members Attic Firestop Vent Termination Trapezoid Termination Cap Vent Termination Minimum Clearances This also pertains to vertical vent systems installed Minimum Height from Roof to Lowest Discharge Opening Step Gas Control System Step Positioning Leveling, Securing FireplaceIntermittent Pilot Ignition IPI System Step Gas Supply Line Gas Supply LineStep Gas Pressure Requirements Wiring Fireplace Intermittent Pilot Ignition IPI WiringPressure Natural Gas Propane Appliance RequirementsOptional Accessories Wall SwitchWSK-MLT Hearth Extensions Sealant MaterialInstalling the Trim Removing Glass DoorSave the log instructions with this manual Positioning the LogsPlacing the Ember Material and Lava Rock Step Before Lighting Fireplace After Installation Double-check for faulty componentsDouble-check for gas leaks Double-check vent terminationsFireplace Maintenance Maintaining and Servicing Your FireplaceBurner Flame Patterns Contact Information