Hearth and Home Technologies CD4842MLR Install the Ceiling Firestop, Installing Ceiling Firestop

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C. Install the Ceiling Firestop

A ceiling ﬁrestop MUST be used between ﬂoors and attics.

•DVP pipe only - Frame an opening 10 in. by 10 in. (254 mm by 254 mm) whenever the vent penetrates a ceiling/ﬂoor (see Figure 8.3).

•SLP pipe only - Frame opening 9 in. x 9 in. (229 mm x 229 mm) whenever the vent penetrates a ceiling/floor (see Figure 8.3).

•Frame the area with the same sized lumber as used in ceiling/ﬂoor joist.

•The ceiling ﬁrestop may be installed above or below the ceiling joists when installed with a attic insulation shield. It must be under joists between ﬂoors that are not insulated. Refer to Figure 8.4.

•Secure with three fasteners on each side.

WARNING! Risk of Fire! DO NOT pack insu- lation around the vent. Insulation must be kept back from the pipe to prevent overheating.

	ATTIC ABOVE
	A
	A
PIPE	A
DVP	10 in. (254 mm)
SLP	9 in. (229 mm)
Figure 8.3 Installing Ceiling Firestop

Install attic insula- tion shields before or after installation of vent system.

3 fasteners per side


Ceiling			firestop	Ceiling		firestop

installed below ceiling.				installed above ceiling.
Figure 8.4 Installing the Attic Shield

34	Heatilator • Caliber Mesh CD Series-SIT Valve • 4040-849 Rev J • 06/08

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Contents Direct Vent Gas Appliance Installation and OperationModels CD4236MR CD4842MR What to do if you smell gasCongratulations Homeowner Reference InformationInstaller Guide Table of ContentsUser Guide Troubleshooting Appliance SetupReference Materials Gas Appliance Fireplace Limited Lifetime Warranty Limited Lifetime WarrantyListing and Code Approvals Requirements for the Commonwealth of Massachusetts Operating Instructions Gas Fireplace SafetyYour Fireplace Fan Kit optional Fixed Glass AssemblyRemote Controls, Wall Controls and Wall Switches Clear SpaceFor Your Safety Read Before Lighting Lighting Instructions IPIStanding LightingPilot Frequently Asked Questions After Fireplace is LitRemote Control Maintenance and ServiceMaintenance Tasks-Homeowner Doors, Surrounds, FrontsMaintenance Tasks-Qualiﬁed Service Technician Getting Started Typical Appliance SystemTools and Supplies Needed Design and Installation ConsiderationsInspect Appliance and Components Select Appliance Location Framing and ClearancesModel # Construct the Appliance Chase ClearancesMantels Mantel and Wall ProjectionsMantel Legs or Wall Projections Termination Locations Vent Termination Minimum ClearancesMinimum Clearances for Termination Vent Table Key Vent Information and DiagramsApproved Pipe Use of ElbowsTop Vent Horizontal Termination Vent DiagramsOne Elbow Two 45 Elbows replacing One 90 Elbow Two ElbowsInstalled Vertically Three ElbowsTop Vent Vertical Termination No Elbow12 ft 3.66 m min 60 ft 18.29 m max Rear Vent Horizontal Termination One 45 ElbowTwo Elbows Rear Vent Vertical Termination Min Ft 1.83 m max 12 ft 3.66 m min 60 ft 18.29 m max Install Vertical Termination Bafﬂe 17 Flat BafﬂeWall Penetration Framing Vent Clearances and FramingPipe Clearances to Combustibles Combustible Wall PenetrationInstall the Ceiling Firestop Installing Ceiling FirestopFlat Ceiling Installation Install Attic Insulation ShieldVaulted Ceiling Installation Appliance Preparation Convert from Top Vent to Rear VentOuter Collar, Remove Four Screws 11 Place Outer Collar on Rear of Appliance 16 Cover Plate-Replace Secure and Level the Appliance 20 Proper Positioning, Leveling And Securing Of AnAssemble Pipe Sections DVP Only Install Vent PipeAttach Pipe to the Firebox Assembly Assemble Pipe SectionsAssemble Vent Sections SLP Only Assemble Slip SectionsSecure the Vent Sections Disassemble Vent SectionsInstall Decorative Ceiling Components SLP only Install Metal Roof Flashing Assemble and Install Storm CollarInstall RF4-8 SLP-FSInstall Decorative Wall Components SLP only Install Vertical Termination CapHeat Shield Requirements for Horizontal Termination Install Horizontal Termination Cap InteriorGas Pressure Gas InformationFuel Conversion Gas ConnectionIntelliﬁre Ignition System Wiring Wiring RequirementsStanding Pilot Ignition System Wiring Optional Accessories RequirementsElectrical Service and Repair WSK-MLT-HTLJunction Box Installation Wall Switch Installation for Fan OptionalFacing Material FinishingCombustible Appliance Setup Removing Fixed Glass Assembly Install the Log AssemblyReplacing Fixed Glass Assembly Install Hood Install TrimInstall Clean Face Components Install Top Latch CoverInstall Bottom Latch Cover Air Shutter SettingInstall Firescreen Assembly Troubleshooting Standing Pilot Ignition SystemSymptom Possible Cause Corrective Action Intelliﬁre Ignition System Will not ignite. If the pilot Appliance Dimension Diagram Reference MaterialsVent Components Diagrams DVP Vent ComponentsBEK DVP-BEK2 DVP-TVHW DVP-TRAP DVP-HRC-SS Effective SL-2DVP Adapter#22 Log/Grate Assembly ServiceParts CD4842M Series Parts Service CD4842M SeriesOptional Components Model # Description Contact Information