Manuals / Lochinvar / Household Appliance / Water Heater

Lochinvar 500 service manual Revision A ECO #C06290 initial release, CFA-I-SRev A 09/10

Models: 90 500

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Revision A (ECO #C06290) initial release.

CFA-I-S Rev A

09/10

Page 68

Image 68

Lochinvar 500 service manual Revision A ECO #C06290 initial release, CFA-I-SRev A 09/10

Contents

Installation & Service Manual Models: 90,000 - 500,000 Btu/hrCFA-I-SRev A Save this manual for future referenceHazard definitions DANGERNOTICE ContentsWarranty – Installation & Service ManualPlease read before proceeding Checking equipment –Please read before proceeding Codes –Installation & Service Manual Other Specifications RatingsCopper-fin I=B=R Rating Installation & Service ManualCopper-finSpecifications Installation & Service ManualRatings NotesThe Copper-fin- How it works Installation & Service Manual The Copper-fin- How it works6 7 8 13 12The Copper-fin- How it works... continued Installation & Service Manual7 23 6 12 8 141Determine unit location Location of unitInstallation & Service Manual NOTICE1Determine boiler location Installation & Service ManualFigure 1-3_CombustionAir Direct from Outside Figure 1-4_CombustionAir Through DuctsInstallation & Service Manual 1Determine boiler location1Determine boiler location continued TABLE - 1B MINIMUM RECOMMENDED COMBUSTIONAIR SUPPLY TO EQUIPMENT ROOM Installation & Service Manual2Venting A Conventional Negative Draft Venting SystemTABLE - 2A VENT PIPE SIZES Installation & Service ManualInstallation & Service Manual 2Venting continuedVertical Vent Termination Clearances Installation & Service Manual2Venting Figure 2-2_VentTermination from Peaked Roof 10 orMasonry Chimney Installation TABLE - 7B VENT MATERIALSInput MaterialAutomatic Vent Damper Installation & Service Manual2Venting DANGER3Gas connections Gas SupplyGas Pressure Test Gas ConnectionGas Piping TABLE - 3EInstallation & Service Manual Install Piping to ControlGas Manifold Pressure Adjustment Procedure 3Gas connections continuedFigure 3-3_ManifoldPressure Adjustment Figure 3-2_WrenchChecking Gas Supply Pressure Installation & Service Manual3Gas connections Figure 3-4_GasSupply PressureCombination Gas Valves Installation & Service Manual3Gas connections continued Figure 3-5_F1Gas Valve, standing pilotWater Flow Switch if equipped 4Hydronic pipingRelief Valve Installation & Service ManualTypical Heating Boiler Installations 4Hydronic piping continuedLow Water Cutoff if equipped TABLE - 4A MINIMUM REQUIRED FLOWTABLE - 4B SYSTEM TEMPERATURE RISE CHART Piping of the Boiler SystemBased on Boiler Output in Btu/hr Installation & Service ManualTABLE - 4C HEAT EXCHANGER PRESSURE DROP CHART Circulator Pump SpecificationsWater Connections Heating Boilers Only Circulator Pump RequirementsPrimary/Secondary Boiler Piping Installation & Service Manual4Hydronic piping NOTICELow Temperature Bypass Requirements Three Way ValvesBoiler Flow Rates 4Hydronic piping continuedPrimary / Secondary Piping Installation & Service Manual4Hydronic piping NOTICEInstallation & Service Manual 4Hydronic piping continuedPrimary / Secondary Piping NOTICEInstallation & Service Manual TEMPERATURE LOOP TEMPERATURE LOOP TEMPERATURESYSTEM SUPPLY SENSOR WHEN USED TEMPERATURE / PRESSURE GAUGE TYPICALTABLE - 5A TERMINAL STRIP WIRING Boiler Operating Temperature ControlPower Venter Connection to Terminal Strip 5Electrical connectionsTemperature Adjustment Pump Wiring for a Heating BoilerOperating Temperature Control TABLE - 5BLocating Temperature Control Temperature Control Settings5Electrical connections continued TABLE - 5C MAXIMUM SET POINT DETERMINATIONInstallation & Service Manual Temperature Control SensorsInlet Water Temperature Sensor Multi-PurposeTemperature SensorOutdoor Air Reset Option Installation & Service ManualFigure 5-5_Installationof Remote Sensors Figure 5-6_OptionalOutdoor Air Reset ControlAdditional Temperature Controls Installation & Service ManualFigure 5-7_OutdoorAir Control Example Chart Outdoor Air Shutdown Enable/Disable SwitchInstallation & Service Manual Manual Reset High Water Temperature Limit ControlFigure 5-8_BlockedVent Switch Location 5Electrical connections continuedFOR YOUR SAFETY READ BEFORE OPERATING Pre-startChecklist6Start-up Initial Start-upLighting Instructions Installation & Service ManualFigure 6-2_PilotLocation Figure 6-3_LightingWand6Start-up TO TURN OFF GAS TO APPLIANCEInstallation & Service Manual Operating Instructions FOR YOUR SAFETY READ BEFORE OPERATINGInstallation & Service Manual WHAT TO DO IF YOU SMELL GASIntermittent Pilot Spark Ignition System F9/M9 Freeze ProtectionTo Turn Off Gas to Appliance Ignition and Control TimingsWater Treatment Installation & Service ManualTABLE - 7A REQUIRED TEMPERATURE RISE Required Temperature Rise7Domestic water heaters Water Velocity Control7Domestic water heaters continued TABLE - 7BWater Chemistry Softened Water SystemsInstallation & Service Manual 7Domestic water heatersFigure 7-1_Singlewater heater_single tank NOTICE7Domestic water heaters continued Figure 7-2 Singlewater heater multiple tankNOTICE COLD WATER SUPPLYInstallation & Service Manual 7Domestic water heatersFigure 7-3_Multiplewater heater_single tank NOTICERemote Sensor Installation Thermostat SettingsMinimum Pump Performance Heat Exchanger7Domestic water heaters Figure 7-5_DangerWarningWater Flow Switch if equipped Pressure Only Relief ValveThermal Expansion Cathodic Protection8Maintenance and annual startup Service technicianOwner maintenance see the following pages for instructions8Maintenance continued Address reported problemsInspect appliance area Inspect appliance interior8Maintenance Check Expansion TankCheck Relief Valve Installation & Service ManualCheck All Wiring Check Control SettingsCombustion Air Adjustment Perform Start-upand ChecksInspect and Clean Burner Heat Exchanger / Burner AccessInspection and Cleaning Procedure 8Maintenance8 Maintenance continued Pilot Flame Adjustment ProcedureClear Area Inspection of Heat Exchanger WaterwaysReview with owner Gas Train and Controls8Maintenance Installation & Service Manual9Troubleshooting StepStep3 StepTroubleshooting Guide 90,000 - 270,000 Btu/hr Models - Water Heaters F1Step Step 9Troubleshooting10 Diagrams Schematic Diagram - F1 UnitWiring Diagram - F1 Unit 90,000 - 270,000 Btu/hr ModelsSchematic Diagram - F9 Unit Wiring Diagram - F9 Unit315,000 - 399,999 Btu/hr Models 10 DiagramsSchematic Diagram - M9 Unit Wiring Diagram - M9 UnitInstallation & Service Manual 10 Diagrams continuedSchematic Diagram - F9/M9 Unit Wiring Diagram - F9/M9 Unit 500,000 Btu/hr Models500,000 Btu/hr Models 10 DiagramsPage Revision A ECO #C06290 initial release CFA-I-SRev A 09/10