Manuals / Thermo Products / Household Appliance / Furnace

Thermo Products OH8FA119DV5B, OH8FA119DV5R Heating Speed Set-ups 2 – Stage OH6FX072DV4

Models: OH8FA119D60B OH8FA119DV5B OH6FX072DV4R OH6FA072DV4N OH6FA072D48N OH8FA119D60R OH8FA119DV5R

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Heating Speed Set-ups ( 2 – Stage )

Heating Speed Set-ups ( 2 – Stage )

OH6FX072DV4

Figure 18-2: ECM 2-stage blower motor speed chart

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Thermo Products OH8FA119DV5B Heating Speed Set-ups 2 – Stage OH6FX072DV4, 2:ECM 2-stageblower motor speed chart

Contents

OH6FA072DV4B OH6FA072D48BOH8FA119D60B OH6FA072D48RCONTENTS Model Number Digit ConfigurationFuel Heat Exchanger IdentifierSERVICE PERSON. See Page I. SAFETY SECTIONχWARNING AND CAUTIONS χCAUTION:DO NOT ATTEMPT TO START THE BURNER WHENPage a. Combustible material A. CODES AND CLEARANCESb.Non-combustiblematerial MODEL NO.1 TYPE OFFROM SIDES OFA. CHIMNEY 1. PROPER CHIMNEY SIZE2. PREVENTION OF CHIMNEY CONDENSING 3. PROPER CHIMNEY HEIGHT 4. PROPER VENT CONNECTOR PIPE/CHIMNEY CONNECTION6. TIGHT JOINTS 7. TIGHT CLEAN-OUTDOORS AND CONNECTIONS8. NO INTERCONNECTED CHIMNEY FLUES B. FLUE PIPE CLEARANCES, SIZING AND TYPEA.Equal the required clearance with no protection ROTATION OF FRONT FLUE ELBOW B. VENTINGC. DRAFT REGULATORS D. DUCT WORK/AIR CONDITIONINGNote: Do not use with Direct Vent application Airflow Requirements and Sizing of Duct Work Page 7.The supply and return air ducts, or flexible joints, should be carefully secured and sealed to the appliance housing to prevent air leakage from, or into, the duct system. For best performance, insulate the outside surfaces of the ducts to reduce heat loss from, or heat gain to, the ducts E. Air Filter Mounted External to Furnace 1.HEATING CFM HEAT OUTPUT OF FURNACE BTUH1.1 X TR TEMPERATURE RISE, F = HEATINGCFM Connect the return air plenum to the filter rack and slide the filter into place. Dimensions for adapting the return air plenum to the filter rack are provided See Fig. 10a & 10b Maximum F. LIMIT POSITION AND LOCATIONFilter Type Air VelocityG. BURNER INSTALLATION H. BURNER SPECIFICATIONS AND APPLICATIONS DO NOT CHANGE POSITION OF THE CHAMBER+ INSULATOR S = SLEEVE OR N = NONE NOZZLE SIZE OIL NOZZLE CAPACITY CHARTEQUIVALENT HEAT EFFECTIVE HEATING2 STAGE FIRING RATES MOUNTING THE 2-STAGERIELLO BURNERCAPACITY FIRINGI. OIL TANK AND PIPING K. ELECTRICAL WIRIING J. OIL FILTERMaximum AssemblyModel 115 VACThermostat Anticipator Setting Preferred method of adjustment L. Blower Motor Speed Selection OH6FA072DV4 Heating Speed Set-upsOH8FA119DV5 Heating Speed Set-upsFurnace Motor Current Draw Amps / Watts vsHeating Speed Set-ups 2 – Stage OH6FX072DV4 Figure 18-2:ECM 2-stageblower motor speed chartFurnace Motor Current Cooling Speed Set-ups OH6F*072DV4Draw Amps / Watts vs External Static Pressure in W.CFurnace Motor Current Cooling Speed Set-ups OH8FA119DV5Draw Amps/Watts vs External Static Pressure in W.COH6FA072D48 OH8FA119D60 Speed vs. color code for PSC Motor Low = RedMed-Low= Blue Med-High= Yellow High = Black TERMINAL DEFINITIONS & FIELD WIRING M. BLOWER CONTROLLER INFORMATION FOR PSC MOTORB. Outputs A. InputsC. Operating Modes Heat Mode DIAGNOSTIC FEATURES PSC TROUBLE SHOOTINGOperating Instructions N. STARTUP PROCEDURESFor Your Safety Read Before Operating i.STOP! Read the safety information aboveTo Turn Off Oil to Appliance 2. Adjustment of Burner CombustionCOMBUSTION HEAD SETTING FOR 2-STAGERIELLO BURNER AIR DAMPER ADJUSTMENT TURN TO THE RIGHT: SIGN +TURN TO THE LEFT: SIGN 2nd STAGE ADJUSTMENT 1st STAGE ADJUSTMENTNotice: Minimum return air temperature is 55F 3. Adjustment Of Heat Input Rate4. Setting Supply Air Temperature Rise 5. Checkout Procedure C. INSPECTION AREAS III. USERS INFORMATION SECTIONχCAUTION:DO NOT ATTEMPT TO MAKE REPAIRS YOURSELF χCAUTION:DO NOT ATTEMPT TO START THE BURNER WHEND. STARTING THE BURNER E. FILTER CLEANING AND LOCATIONIV. INSTALLERS INSTRUCTIONS TO USER A.GENERAL INSPECTION V. DEALER MAINTENANCEB.HEAT EXCHANGER SAFETY DURING SERVICING AND INSPECTIONSERVICE PERSON C. HEAT EXCHANGER CLEANING INSTRUCTIONSVacuum Hose Length OH6 8FT OH8 8FT Figure 24 Heat Exchanger Clean-OutsD. ELECTRICAL SYSTEM Filter maintenance procedureE. SUPPLY/RETURN AIR BLOWER F. SUPPLY/RETURN AIR FILTERG. EXTENDED APPLIANCE SHUTDOWN Filter replacementON STARTUP 2.Remove the furnace front door PERSONNEL, AND NOT BY THE FURNACE OWNER VII. TROUBLESHOOTINGBeckett Burner Riello BurnerDiagnostic Features A. DIAGNOSTICSB. CAD CELL CHECKOUT PROCEDURE Number of flashesPage VIII. Sequence of Operations Flow Chart Page IX. Trouble Shooting Flow Chart Page Page Page Page CUSTOMER HEATINGSYSTEM Replacement Parts for OH6FA072D Appendix – A Replacement PartsReplacement Parts for OH8FA119D OH6FA072D48 PSC Wiring Diagram 71 Appendix – B Wiring DiagramsOH6FA072DV4 ECM Wiring Diagram OH6FX072DV4 ECM 2-StageWiring Diagram OH8FA1119D60 PSC Wiring Diagram 74 OH8FA1119DV5 ECM Wiring Diagram