Heatiator NNXT3933IL, NNXT4236IL NNXT3933I owner manual Install the 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

36	Heatilator • Novus NNXT • 4055-879 • Rev. o • 2/12

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Contents Installation and Operation ModelsCongratulations Homeowner Reference InformationTable of Contents Finishing Limited Lifetime Warranty Limited Lifetime WarrantyWarranty Conditions Listing and Code Approvals Requirements for the Commonwealth of Massachusetts Gas Fireplace Safety Operating InstructionsYour Fireplace Fixed Glass Assembly Remote Controls, Wall Controls and Wall SwitchesFan Kit optional Clear SpaceIPI Battery Tray/Battery Installation Control Module OperationBefore Lighting Fireplace Lighting Instructions IPI Final inspection byFrequently Asked Questions Initial Break-in ProcedureAfter Fireplace is Lit Maintenance and Service Maintenance Tasks-HomeownerMaintenance Tasks-Qualiﬁed Service Technician Getting Started Typical Appliance SystemDesign and Installation Considerations Tools and Supplies NeededInspect Appliance and Components Framing and Clearances Select Appliance LocationConstruct the Appliance Chase Clearances In. to Level of StandoffsMantel and Wall Projections MantelsMantel Legs or Wall Projections Termination Locations Vent Termination Minimum ClearancesMinimum Clearances for Termination Vent Information and Diagrams Approved PipeVent Table Key Use of ElbowsVent Diagrams Top Vent Horizontal TerminationOne Elbow Two 45 Elbows replacing One 90 Elbow Two ElbowsTop Vent Vertical Termination Three ElbowsNo Elbow TionsLower & twist pull out 12 ft 3.66 m min 60 ft 18.29 m max 12 ft 3.66 m min ft 18.29 m max Rear Vent Horizontal Termination One 45 ElbowInstalled Horizontally Rear Vent Vertical Termination Min Ft 1.83 m max 12 ft 3.66 m min Vent Clearances and Framing Pipe Clearances to CombustiblesWall Penetration Framing Combustible Wall PenetrationInstall the Ceiling Firestop Ceiling ﬁrestop Must be used between ﬂoors and atticsInstall Attic Insulation Shield Flat Ceiling InstallationVaulted Ceiling Installation Appliance Preparation Top VentRear Vent It Cannot be changed at a later time BasketSecure and Level the Appliance 11 Proper Positioning and Securing of an ApplianceInstall Vent Pipe Attach Pipe to the Firebox AssemblyAssemble Vent Sections DVP Only 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 Vertical Termination Cap Install Decorative Wall Components SLP onlyHeat Shield Requirements for Horizontal Termination Install Horizontal Termination Cap Failure to maintain overlap may cause overheating and ﬁreShrouds HHT ShroudsField Constructed Shrouds Open Top Shroud may be used with DVP-TV, DVP-TVHW, SLP-TVHWMailbox Style Shroud Dimensions Min. Base Dims Gas Information Fuel ConversionGas Pressure Gas ConnectionWiring Requirements Intelliﬁre Plus Ignition System WiringOptional Accessories Requirements Electrical InformationElectrical Service and Repair RC200 Wiring DiagramJunction Box Installation Wall Switch Installation for Fan OptionalRemote Control Installation & Operations RC200Installation of Remote Control Housing Programming the RC200 to the Control Module Power Outage Finishing Facing Material Do not RemoveAppliance Setup Clean the Appliance Assemble Logs AccessoriesPlace the Rockwool Place the Lava RockReplacing Fixed Glass Assembly Air Shutter SettingInstall Hood Install Control Heat ShieldInstall the Control Heat Shield Remove Screen ProtectorInstall Floor Cover Install the ﬂoor cover as shown in FigureClose the Screen Assembly Hang Screen on Shoulder ScrewsTroubleshooting Intelliﬁre Plus Intermittent Ignition SystemIntelliﬁre Plus Intermittent Pilot Ignition System Appliance Dimension Diagram Reference MaterialsVent Components Diagrams DVP45DVP-TRAPFL 229 mm DVP-TRAP DVP-HRC-SS  B. Vent Components Diagrams SLP Series Vent ComponentsSL-2DVP SLK-SNKD DVP-FBHT Log Set Assembly Service PartsPart number list on following Stocked At DepotNNXT4236I, NNXT4236IL #16 Ignition Control Assembly #15 Valve AssemblyOptional Components Contact Information Do not Discard this Manual