Manuals / Lochinvar / Household Appliance / Water Heater

Lochinvar 500 7Domestic water heaters, Installation & Service Manual, Notice, Cold Water, Supply

Models: 90 500

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7Domestic water heaters

Figure 7-1_Single water heater_single tank

		BALL VALVE
		(TYPICAL)
	COLD WATER	FLOW CHECK
	COLD WATER	VALVE (TYPICAL)
	SUPPLY	VALVE (TYPICAL)
	SUPPLY
	MIXING VALVE
	THERMOMETER	EXPANSION
	THERMOMETER	TANK
		TANK
	HOT WATER
	SUPPLY
	UNION
	(TYPICAL)
	TEMPERATURE

&PRESSURE RELIEF VALVE (TYPICAL)

STORAGE
TANK	DRAIN

Installation & Service Manual

BUILDING

RETURN

FLOW

SWITCH

WATER

HEATER

WATER HEATER

CIRCULATOR

Y-STRAINER [RECOMMENDED]

NOTICE

Please note that these illustrations are meant to show system piping concept only, the installer is responsible for all equipment and detailing required by local codes.

Page 48

Image 48

Lochinvar 500 7Domestic water heaters, Installation & Service Manual, 1_Singlewater heater_single tank, Notice, Cold Water

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 –Codes – Installation & Service ManualPlease read before proceeding 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_LightingWandTO TURN OFF GAS TO APPLIANCE Installation & Service Manual6Start-up 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

Figure 7-1_Single water heater_single tank

COLD WATER

SUPPLY

HOT WATER

STORAGE

TANK

BUILDING

WATER