Thermo Products OHFA199DV5R, OHFA199DV5B operation manual

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3.Check the resistance across the cad cell pins with the cell covered (protected from exposure to ambient light). The resistance should be greater than 20,000 ohms.

4.If cell resistances are different from above, replace the plug-in portion of cell, (Honeywell Part No. 130367).

5.Carefully reinsert the plug-in portion of the cad cell into the receptacle. If the cad cell appears to be functioning correctly, troubleshoot the fan control module and the safety and ignition control (primary control) module, according to the Honeywell instructions covering the devices.

The troubleshooting chart beginning on the following page should help identify the type of malfunction or deviation from normal operation. To use this diagram, just follow the instructions in the boxes. If the answer is yes or the condition is true, go down to the next box. If the answer is no or the condition is false, go to the box on the right. Continue checking and answering questions and conditions in each box until a problem and/or repair is found. After any maintenance or repair, the trouble shooting sequence should be repeated until normal system operation is achieved.

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Contents OH6FA072DV4B OH6FA072DV4ROH6FA072DV4N OH6FX072DV4R Contents = Front = Highboy D = DownflowSafety Section WARNING and CautionsCAUTION do not Attempt to Start the Burner When Page Combustible material Codes and ClearancesNon-combustible material Highboy II. General Instructions Read Before Start of InstallationPrevention of Chimney Condensing ChimneyProper Chimney Height Proper Vent Connector PIPE/CHIMNEY ConnectionFlue Pipe CLEARANCES, Sizing and Type Tight CLEAN-OUT Doors and ConnectionsTight Joints No Interconnected Chimney FluesReduction of Clearances with Specified Forms of Protection Venting Draft Regulators Duct WORK/AIR ConditioningAirflow Requirements and Sizing of Duct Work Page Page Supply air duct sizing Example Examples Air Filter Mounted External to FurnaceA typical filter rack and dimensions for the OH6 furnace Limit Position and Location Maximum Filter Type Air Velocity Model Number Ft/minOH6 OH8 Do not remove this retainer when installing burner Burner InstallationDo not Change Position of the Chamber Burner Specifications and ApplicationsBTU/HR Beckett RielloBTU/HR Heating Capacity Mounting the 2-STAGE Riello BurnerOIL Tank and Piping Electrical Wiriing OIL FilterElectronic Air Cleaner EAC and Humidifier Installation OH6FA072DV5OH8FA119DV5 Fan Control Module Thermostat Anticipator SettingHeat Anticipator Adjustment Scale Preferred method of adjustmentBlower Motor Speed Selection Draw Amps/ / Watts vs Heating Speed Set-upsOH6FA072DV4 Furnace Motor Current1A ECM blower motor speed chart OH6FX072DV4 Heating Speed Set-ups 2 StageCooling blower motor speed chart Draw Amps/Watts vs Cooling Speed Set-upsHigh OH6FA072D48HTG Speed by Input Blower Controller Information for PSC Motor Terminal Definitions & Field WiringOutputs InputsOperating Modes On and OFF Blower Delay Time Switch Settings Diagnostic Features PSC Trouble ShootingStartup Procedures STOP! Read the safety information aboveOperating Instructions To Turn Off Oil to Appliance Adjustment of Burner CombustionPreliminary Adjustment of Burner Air Band and Air Shutter Combustion Head Setting for 2-STAGE Riello BurnerAIR Damper Adjustment Turn to the Right Sign +Turn to the Left Sign 2nd Stage Adjustment 1st Stage AdjustmentAdjustment Of Heat Input Rate Page Checkout Procedure III. Users Information Section Inspection Areas Caution do not Attempt to Make Repairs Yourself Starting the Burner Filter Cleaning and LocationIV. Installers Instructions to User Dealer Maintenance Safety During Servicing and InspectionGeneral Inspection Heat Exchanger OH6 8FT OH8 8FT SUPPLY/RETURN AIR Filter Filter maintenance procedureElectrical System SUPPLY/RETURN AIR BlowerFilter replacement Extended Appliance ShutdownOn Shutdown On Startup VI. HOMEOWNER/USER Information and Routine MaintenanceBeckett Burner Location of oil primary control reset buttonPage Number of flashes Cad Cell Resistance in ohms Model R7184B DiagnosticsDiagnostic Features CAD Cell Checkout ProcedurePage VIII. Sequence of Operations Flow Chart Page IX. Trouble Shooting Flow Chart Page Page Page Page Customer Appendix a Replacement Parts Replacement Parts for OH8FA119D Appendix B Wiring Diagrams OH6FA072DV4 ECM Wiring Diagram OH6FX072DV4 ECM 2-Stage Wiring Diagram OH8FA1119D60 PSC Wiring Diagram OH8FA1119DV5 ECM Wiring Diagram