Hearth and Home Technologies CNXT4842ILT, CNXT4842IH, CNXT4842ILH Will not ignite. If the pilot

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A. Intelliﬁre Ignition System (continued)

Symptom	Possible Cause	Corrective Action
4. Pilot lights but continues	A. A shorted or loose connection	Verify all connections to wiring diagram in manual. Verify
to spark, and main burner	in ﬂame sensing rod.	connections underneath pilot assembly are tight. Verify connections
will not ignite. (If the pilot		are not grounding out to metal chassis, pilot burner, pilot enclosure
continues to spark after		or screen if present, or any other metal object.
the pilot ﬂame has been lit,
ﬂame rectiﬁcation has not
ﬂame rectiﬁcation has not	B. Poor ﬂame rectiﬁcation or	With ﬁxed glass assembly in place, verify that ﬂame is engulﬁng
occurred.)	contaminated ﬂame sensing	ﬂame sensing rod on left side of pilot hood. Flame sensing rod
	contaminated ﬂame sensing
	rod.	should glow shortly after ignition. Verify correct pilot oriﬁce is
		installed and gas inlet is set to pressure speciﬁcations.

	C. Module is not grounded.	Verify module is securely grounded to metal chassis of appliance.
		Verify that wire harness is ﬁrmly connected to the module.

	D. Damaged pilot assembly or	Verify that ceramic insulator around the ﬂame sensing rod is not
	contaminated ﬂame sensing	cracked, damaged, or loose. Verify connection from ﬂame sensing
	rod.	rod to white sensor wire. Clean ﬂame sensing rod with emery cloth
		to remove any contaminants that may have accumulated on ﬂame
		sensing rod. Verify continuity with a multimeter with ohms set at
		lowest range. Replace pilot if any damage is detected.

	E. Module.	Turn ON/OFF rocker switch or wall switch to OFF position. Remove
		ignitor wire “I” from module. Place ON/OFF rocker switch or wall
		switch in ON position. If there is no spark at “I” terminal module
		must be replaced. If there is a spark at “I” terminal, module is ﬁne.

64	Heatilator • Caliber CNXT Series • 4047-132 Rev U • 11/08

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Contents Installation and Operation ModelsDirect Vent Gas Appliance What to do if you smell gasCongratulations Homeowner Reference InformationInstaller Guide Table of ContentsUser Guide Appliance Setup TroubleshootingFinishing Reference MaterialsWarranty Hearth & Home Technologies Limited Warranty CONDITIONS, Exclusions & Limitation of LiabilityWarranty Listing and Code Approvals Requirements for the Commonwealth of Massachusetts Operating Instructions Gas Fireplace SafetyYour Fireplace Fixed Glass Assembly Remote Controls, Wall Controls and Wall SwitchesFan Kit optional Clear SpaceLighting Instructions IPI Frequently Asked Questions After Fireplace is LitMaintenance and Service Maintenance Tasks-HomeownerMaintenance Tasks-Qualiﬁed Service Technician Getting Started Typical Appliance SystemDesign and Installation Considerations Tools and Supplies NeededInspect Appliance and Components Any such action may cause a ﬁre hazardSelecting Appliance Location Framing and ClearancesModel # Clearances Constructing the Appliance ChaseRough Opening Model Width Height Depth Mantels Mantel and Wall ProjectionsMantel Legs or Wall Projections Termination Locations Vent Termination Minimum ClearancesMinimum Clearances for Termination Vent Information and Diagrams Approved PipeVent Table Key Use of ElbowsTop Vent Horizontal Termination Vent DiagramsOne Elbow Two Elbows Two 45 Elbows replacing One 90 ElbowMin Max +H 2 max +H 2+H 3 max Installed 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 Installing Vertical Termination Bafﬂe 17 Flat BafﬂeReplace the glass refer to .H Start the appliance Vent Clearances and Framing Pipe Clearances to CombustiblesWall Penetration Framing 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 Securing and Leveling the Appliance 20 Proper Positioning, Leveling And Securing Of AnInstalling Vent Pipe Attach Pipe to the Firebox AssemblyAssemble Pipe Sections DVP Only Assemble Pipe Sections DVP OnlyAssemble Vent Sections SLP Only Adding Venting ComponentsAssemble Slip Sections Secure the Vent SectionsInstall Decorative Ceiling Components SLP only Disassemble Vent SectionsInstall Metal Roof Flashing CaulkAssemble and Install Storm Collar 17 Assembling the Storm CollarInstall RF4-8 SLP-FSInstalling Decorative Wall Components SLP only Installing Vertical Termination CapHeat Shield Requirements for Horizontal Termination Install Horizontal Termination Cap InteriorGas Information Fuel ConversionGas Pressure Gas ConnectionWiring Requirements Intelliﬁre Ignition System WiringElectrical Service and Repair Junction Box Installation Electrical InformationPrecautions WSK-MLT Multifunction Wall SwitchDetermine Location Wiring the Wall Switch Intelliﬁre IPI Wiring DiagramInstall the Flame Solenoid Hook up the Temperature Sensor Switch for FanInstall the Remote Cover Plate Install the Cover PlateWall Switch Button Operation Setting Flame Height/Manifold PressureWSK-MLT Operating Instructions Service Parts List Finishing Facing MaterialAppliance Setup Log Assembly Place the RockwoolInstall Trim and/or Surrounds Install HoodAir Shutter Setting Removing Fixed Glass AssemblySymptom Possible Cause Corrective Action TroubleshootingIntelliﬁre Ignition System Will not ignite. If the pilot Appliance Dimension Diagram Reference MaterialsVent Components Diagrams DVP Vent ComponentsBEK DVP-BEK2 DVP-TVHW DVP-TRAP Horizontal Termination CapDVP-HRC-SS Effective SL-2DVP AdapterService PartsService Parts StockedIPI Valve Assembly CNXT4842 Series Log/Grate Assembly Valve Assembly Optional Components Model DescriptionContact Information