Hearth and Home Technologies CD4236MR, CD4842MR, CD4842MIR, CD4842MLR Will not ignite. If the pilot

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B. 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

 

 

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

 

 

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.

 

 

 

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

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Contents Models CD4236MR CD4842MR Installation and OperationDirect Vent Gas Appliance What to do if you smell gasHomeowner Reference Information CongratulationsInstaller Guide Table of ContentsUser Guide Troubleshooting Appliance SetupReference Materials Limited Lifetime Warranty Gas Appliance Fireplace Limited Lifetime WarrantyListing and Code Approvals Requirements for the Commonwealth of Massachusetts Operating Instructions Gas Fireplace SafetyYour Fireplace Remote Controls, Wall Controls and Wall Switches Fixed Glass AssemblyFan Kit optional Clear SpaceLighting Instructions IPI For Your Safety Read Before LightingStanding LightingPilot After Fireplace is Lit Frequently Asked QuestionsMaintenance Tasks-Homeowner Maintenance and ServiceRemote Control Doors, Surrounds, FrontsMaintenance Tasks-Qualified Service Technician Typical Appliance System Getting StartedTools and Supplies Needed Design and Installation ConsiderationsInspect Appliance and Components Select Appliance Location Framing and ClearancesModel # Clearances Construct the Appliance ChaseMantels Mantel and Wall ProjectionsMantel Legs or Wall Projections Vent Termination Minimum Clearances Termination LocationsMinimum Clearances for Termination Approved Pipe Vent Information and DiagramsVent Table Key Use of ElbowsTop Vent Horizontal Termination Vent DiagramsOne Elbow Two Elbows Two 45 Elbows replacing One 90 ElbowThree Elbows Installed VerticallyNo Elbow Top Vent Vertical Termination12 ft 3.66 m min 60 ft 18.29 m max One 45 Elbow Rear Vent Horizontal TerminationTwo Elbows Rear Vent Vertical Termination Min Ft 1.83 m max 12 ft 3.66 m min 60 ft 18.29 m max 17 Flat Baffle Install Vertical Termination BafflePipe Clearances to Combustibles Vent Clearances and FramingWall Penetration Framing Combustible Wall PenetrationInstalling Ceiling Firestop Install the Ceiling FirestopFlat Ceiling Installation Install Attic Insulation ShieldVaulted Ceiling Installation Convert from Top Vent to Rear Vent Appliance PreparationOuter Collar, Remove Four Screws 11 Place Outer Collar on Rear of Appliance 16 Cover Plate-Replace 20 Proper Positioning, Leveling And Securing Of An Secure and Level the ApplianceAttach Pipe to the Firebox Assembly Install Vent PipeAssemble Pipe Sections DVP Only Assemble Pipe SectionsAssemble Slip Sections Assemble Vent Sections SLP OnlyDisassemble Vent Sections Secure the Vent SectionsInstall Decorative Ceiling Components SLP only Assemble and Install Storm Collar Install Metal Roof FlashingSLP-FS Install RF4-8Install Decorative Wall Components SLP only Install Vertical Termination CapHeat Shield Requirements for Horizontal Termination Interior Install Horizontal Termination CapFuel Conversion Gas InformationGas Pressure Gas ConnectionStanding Pilot Ignition System Wiring Wiring RequirementsIntellifire Ignition System Wiring Optional Accessories RequirementsWSK-MLT-HTL Electrical Service and RepairWall Switch Installation for Fan Optional Junction Box InstallationFacing Material FinishingCombustible Appliance Setup Removing Fixed Glass Assembly Install the Log AssemblyReplacing Fixed Glass Assembly Install Clean Face Components Install TrimInstall Hood Install Top Latch CoverInstall Bottom Latch Cover Air Shutter SettingInstall Firescreen Assembly Standing Pilot Ignition System TroubleshootingSymptom Possible Cause Corrective Action Intellifire Ignition System Will not ignite. If the pilot Reference Materials Appliance Dimension DiagramDVP Vent Components Vent Components DiagramsBEK DVP-BEK2 DVP-TVHW DVP-TRAP DVP-HRC-SS Effective Adapter SL-2DVP#22 Log/Grate Assembly ServiceParts CD4842M Series Parts CD4842M Series ServiceOptional Components Model # Description Contact Information