Manuals / Lochinvar / Household Appliance / Water Heater

Lochinvar 90, 500 service manual

Models: 90 500

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Contents

Save this manual for future reference Installation & Service ManualModels: 90,000 - 500,000 Btu/hr CFA-I-SRev AContents Hazard definitionsDANGER NOTICEChecking equipment – Warranty –Installation & Service Manual Please read before proceedingInstallation & Service Manual Codes –Please read before proceeding Installation & Service Manual Other SpecificationsRatings Copper-fin I=B=R RatingNotes Copper-finSpecificationsInstallation & Service Manual RatingsThe Copper-fin- How it works 13 12 Installation & Service ManualThe Copper-fin- How it works 6 7 86 12 8 14 The Copper-fin- How it works... continuedInstallation & Service Manual 7 23NOTICE 1Determine unit locationLocation of unit Installation & Service ManualFigure 1-4_CombustionAir Through Ducts 1Determine boiler locationInstallation & Service Manual Figure 1-3_CombustionAir Direct from Outside1Determine boiler location Installation & Service ManualInstallation & Service Manual 1Determine boiler location continuedTABLE - 1B MINIMUM RECOMMENDED COMBUSTION AIR SUPPLY TO EQUIPMENT ROOMInstallation & Service Manual 2VentingA Conventional Negative Draft Venting System TABLE - 2A VENT PIPE SIZES2Venting continued Installation & Service ManualFigure 2-2_VentTermination from Peaked Roof 10 or Vertical Vent Termination ClearancesInstallation & Service Manual 2VentingMaterial Masonry Chimney InstallationTABLE - 7B VENT MATERIALS InputDANGER Automatic Vent DamperInstallation & Service Manual 2VentingGas Connection 3Gas connectionsGas Supply Gas Pressure TestInstall Piping to Control Gas PipingTABLE - 3E Installation & Service ManualFigure 3-2_Wrench Gas Manifold Pressure Adjustment Procedure3Gas connections continued Figure 3-3_ManifoldPressure AdjustmentFigure 3-4_GasSupply Pressure Checking Gas Supply PressureInstallation & Service Manual 3Gas connectionsFigure 3-5_F1Gas Valve, standing pilot Combination Gas ValvesInstallation & Service Manual 3Gas connections continuedInstallation & Service Manual Water Flow Switch if equipped4Hydronic piping Relief ValveTABLE - 4A MINIMUM REQUIRED FLOW Typical Heating Boiler Installations4Hydronic piping continued Low Water Cutoff if equippedInstallation & Service Manual TABLE - 4B SYSTEM TEMPERATURE RISE CHARTPiping of the Boiler System Based on Boiler Output in Btu/hrCirculator Pump Requirements TABLE - 4C HEAT EXCHANGER PRESSURE DROP CHARTCirculator Pump Specifications Water Connections Heating Boilers OnlyNOTICE Primary/Secondary Boiler PipingInstallation & Service Manual 4Hydronic piping4Hydronic piping continued Low Temperature Bypass RequirementsThree Way Valves Boiler Flow RatesNOTICE Primary / Secondary PipingInstallation & Service Manual 4Hydronic pipingNOTICE Installation & Service Manual4Hydronic piping continued Primary / Secondary PipingTEMPERATURE / PRESSURE GAUGE TYPICAL Installation & Service ManualTEMPERATURE LOOP TEMPERATURE LOOP TEMPERATURE SYSTEM SUPPLY SENSOR WHEN USED5Electrical connections TABLE - 5A TERMINAL STRIP WIRINGBoiler Operating Temperature Control Power Venter Connection to Terminal StripTABLE - 5B Temperature AdjustmentPump Wiring for a Heating Boiler Operating Temperature ControlTABLE - 5C MAXIMUM SET POINT DETERMINATION Locating Temperature ControlTemperature Control Settings 5Electrical connections continuedMulti-PurposeTemperature Sensor Installation & Service ManualTemperature Control Sensors Inlet Water Temperature SensorFigure 5-6_OptionalOutdoor Air Reset Control Outdoor Air Reset OptionInstallation & Service Manual Figure 5-5_Installationof Remote SensorsOutdoor Air Shutdown Enable/Disable Switch Additional Temperature ControlsInstallation & Service Manual Figure 5-7_OutdoorAir Control Example Chart5Electrical connections continued Installation & Service ManualManual Reset High Water Temperature Limit Control Figure 5-8_BlockedVent Switch LocationInitial Start-up FOR YOUR SAFETY READ BEFORE OPERATINGPre-startChecklist 6Start-upFigure 6-3_LightingWand Lighting InstructionsInstallation & Service Manual Figure 6-2_PilotLocationInstallation & Service Manual TO TURN OFF GAS TO APPLIANCE6Start-up WHAT TO DO IF YOU SMELL GAS Operating InstructionsFOR YOUR SAFETY READ BEFORE OPERATING Installation & Service ManualIgnition and Control Timings Intermittent Pilot Spark Ignition System F9/M9Freeze Protection To Turn Off Gas to ApplianceInstallation & Service Manual Water TreatmentWater Velocity Control TABLE - 7A REQUIRED TEMPERATURE RISERequired Temperature Rise 7Domestic water heatersSoftened Water Systems 7Domestic water heaters continuedTABLE - 7B Water ChemistryNOTICE Installation & Service Manual7Domestic water heaters Figure 7-1_Singlewater heater_single tankCOLD WATER SUPPLY 7Domestic water heaters continuedFigure 7-2 Singlewater heater multiple tank NOTICENOTICE Installation & Service Manual7Domestic water heaters Figure 7-3_Multiplewater heater_single tankHeat Exchanger Remote Sensor InstallationThermostat Settings Minimum Pump PerformanceFigure 7-5_DangerWarning 7Domestic water heatersCathodic Protection Water Flow Switch if equippedPressure Only Relief Valve Thermal Expansionsee the following pages for instructions 8Maintenance and annual startupService technician Owner maintenanceInspect appliance interior 8Maintenance continuedAddress reported problems Inspect appliance areaInstallation & Service Manual 8MaintenanceCheck Expansion Tank Check Relief ValvePerform Start-upand Checks Check All WiringCheck Control Settings Combustion Air Adjustment8Maintenance Inspect and Clean BurnerHeat Exchanger / Burner Access Inspection and Cleaning ProcedureInspection of Heat Exchanger Waterways 8 Maintenance continuedPilot Flame Adjustment Procedure Clear AreaInstallation & Service Manual Review with ownerGas Train and Controls 8MaintenanceStep 9TroubleshootingStep Step39Troubleshooting Troubleshooting Guide90,000 - 270,000 Btu/hr Models - Water Heaters F1 Step Step90,000 - 270,000 Btu/hr Models 10 DiagramsSchematic Diagram - F1 Unit Wiring Diagram - F1 Unit10 Diagrams Schematic Diagram - F9 UnitWiring Diagram - F9 Unit 315,000 - 399,999 Btu/hr Models10 Diagrams continued Schematic Diagram - M9 UnitWiring Diagram - M9 Unit Installation & Service Manual10 Diagrams Schematic Diagram - F9/M9 UnitWiring Diagram - F9/M9 Unit 500,000 Btu/hr Models 500,000 Btu/hr ModelsPage CFA-I-SRev A 09/10 Revision A ECO #C06290 initial release