Manuals / Lochinvar / Household Appliance / Water Heater

Lochinvar 065, 495, 000 - 2 service manual CB-CWE-i&s-06 CP-5M-1/09

Models: 000 - 2 065 495

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Revision 4 (CB-CW(E)-i&s-04) reflects changes made to the O.A. section.

Revision 5 (CB-CW(E)-i&s-05) reflects changes made to text on Page 21 and the LBLs on pages 47-51.

Revision 6 (ECO #C02870) reflects the addition of a mixing valve to FIG. 41 (page 37) and edits made to the scald warnings.

CB-CW(E)-i&s-06

CP-5M-1/09

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Image 52

Lochinvar 065, 495, 000 - 2 service manual CB-CWE-i&s-06 CP-5M-1/09

Contents

HYDRONIC HEATING BOILERS and DOMESTIC WATER HEATERS495,000 - 2,065,000 Btu/hr MODELS Save this manual for future referenceTable of Contents Table of ContentsSAFETY INFORMATION WarrantyGENERAL PRODUCT INFORMATION Special Instructions3.Boilers and water heaters are heat producing appliances. To avoid damage or injury, do not store materials against the appliance or the vent-airintake system. Use proper care to avoid unnecessary contact especially children with the appliance and vent-airintake components. Follow all clearances from combustibles contained in this manual Front View Rear View PRODUCT IDENTIFICATIONFigure 1 - Front and Rear View INSTALLATION LOCATING UNITClearances from Combustible Construction Base for Combustible FloorsOutdoor Boiler Installation FREEZE PROTECTIONHydronic System Antifreeze Shut-Downand DrainingInstalling Combustion Air Filter COMBUSTION AND VENTILATION AIRCombustion Air Filter INSTALLATIONCombustion Air Options 2. Outside Combustion Air, Using DuctsOne Opening Figure 7 - Outside Combustion Air - Two OpeningsINSTALLATION VENTING General InformationExhaust Fans Venting SupportTABLE-A Flue Pipe Sizes Parapet WallVent System Options TABLE - B Flue Pipe SizesTABLE-C Barometric Damper LocationNegative Draft 1.Conventional Negative Draft VentingFlue Outlet Piping 2. Outdoor Installation Venting INSTALLATIONVertical Vent Termination Clearances and Location Inspection of a Masonry ChimneyTABLE - D Outdoor Vent KitsOutdoor Vent/Air Inlet Location The Outdoor Vent KitCONNECTING TO GAS SUPPLY Gas Pressure TestGas Piping TABLE - E Inlet PressureConnecting Gas Piping to Unit Gas Train and ControlsTABLE-F TABLE-FCombination Gas Valves Checking Gas Supply PressureTABLE - H INSTALLATIONGas Manifold Pressure Adjustment CONNECTING TO WATER SUPPLY Inlet and Outlet ConnectionsTABLE - NET MANIFOLD PRESSURE Regulator Pressure Less Front Chamber PressureCONNECTING TO ELECTRICAL SUPPLY Water Flow SwitchLow Water Cutoff Relief ValveTerminal Strip Connection Options TABLE - J Nominal AMP Draw DataAMP Draw Data INSTALLATIONWater Connections Heating Boilers Only BOILER SYSTEM PIPINGGeneral Plumbing Rules Heat Exchanger Pressure Drop Chart Circulator Pump SpecificationsPump Installation and Maintenance Primary/Secondary Boiler PipingLow Temperature Return Water Systems Radiant Floor and Snow Melt Heating SystemsTable - K LTV Valve Kits 495,000 - 745,000VAL3048Installation with a Chilled Water System System Temperature Risased on Btu/hr InputTABLE - L INSTALLATIONTemperature/Pressure Gauge Boiler Flow RateBoiler Bypass Requirements Filling the SystemFOR YOUR SAFETY READ BEFORE OPERATING OPERATIONWATER TREATMENT Lighting InstructionsLocating Temperature Control SETTING TEMPERATURE CONTROLTo Turn Off Gas To Appliance Temperature Control Settings TABLE - MTABLE-L Maximum Set Point Determination SetpointOutdoor Air Reset Option High-FireOffsetShutdown Outdoor Air Max O.A. MaxTemperature Control Sensors Placement of SensorsBoiler Application Water Heater ApplicationTABLE - N Remote Wire Connection HOT SURFACE IGNITION SYSTEMHot Surface Igniter and Ignition Control Module Remote Mounting of SensorHot Surface Ignition Control Module Ignition and Control TimingsDiagnostic Status Indication OPERATIONTABLE - O Status LED Diagnostic Codes OPERATION AND DIAGNOSTIC LIGHTSTABLE - P Status LED Diagnostic Codes Required Temperature Rise TABLE - Q Temperature Rise ChartDOMESTIC WATER HEATERS Water Velocity ControlTABLE - R Pipe Sizing Chart ABLE-P Pipe Sizing ChartWater Chemistry Circulating PumpPotable Hot Water Temperature Control Settings Domestic Water TemperaturesDOMESTIC WATER Minimum Pump PerformanceHigh Water Temperature Limit Control Location of Cold Water Supply Piping ConnectionsOptional Relief Valve Thermal ExpansionCLEANING AND MAINTENANCE Flue Gas Passageways Cleaning ProceduresBurner Removal and Cleaning Appliance AreaHeat Exchanger Cleaning Fan CleaningCombustion Air Fan Adjustment Adjusting Differential Air PressureFigure 43 - Air Pressure Switch CLEANING AND MAINTENANCE CONTINUEDFigure 44 - Adjusting Air Shutter Servicing Hot Surface Igniter and Ignition Module Figure 47 - Adjusting Air ShutterIgnition System Checkout SEQUENCE OF OPERATIONCLEANING AND MAINTENANCE CONTINUED Power Supply ON/OFF Rocker SwitchManual Reset High-LimitThermostat Safety Device TerminalsIgnition Module Electronic Temperature ControllerHeat Transfer Process Gas Valves, Burner SCHEMATIC DIAGRAM DISCONNECT POWER BEFORE SERVICING THE UNITMODELS 495,000 - 745,000 BTU/HRHI-LIMITS- PWR SW MAIN UNIT - GAS VALVES - BLOWER PRESSURE SWITCH OPERATOROPTIONAL I/O RESET CN7 OPERATORWIRING DIAGRAM SCHEMATIC ANDMODELS 985,000 2,065,000 BTU/HRCONTROL BOX CONNECTIONS WIRING DIAGRAMCONNECTION DIAGRAM A WIRING BOXCB-CWE-i&s-06 CP-5M-1/09