A.O. Smith VB/VW- 750, VB/VW- 1000 instruction manual

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Contents Models Safe INSTALLATION, USE and Service General Safety GAS and Electrical Characteristics Dimension and capacity dataCapacity and Flow data Recovery CapacitiesIntroduction ContentsHigh Altitude Installations PrecautionsField Installed Components Grounding InstructionsControl Components ON/OFF Switch Water Temperature Limit ControlsTemperature Probes Circulating PumpLocation Required AbilityPanels and Covers VB HOT Water Heating BOILERS, are shipped with a 50 psiChemical Vapor Corrosion Installtion ClearancesLeveling Air Requirements Breathing Hazard Carbon Monoxide GasOutdoor Air Through One Opening Outdoor Air Through Two OpeningsOutdoorAir Through Two HorizontalDucts Outdoor Air Through Two Vertical DuctsAir From Other Indoor Spaces Power Vent Termination Clearances Sidewall Power VentDirect Vent Termination Clearances Sidewall Direct VentVenting System Using AL 29-4C Special Installation ConsiderationsConnecting Vent to Boiler Horizontal Installtion Requirements Vertical Installation RequirementsVenting Supports Vertical Termination BELOW. Keep Clear of ALL Obstructions Direct Vent Installation RequirementsDirect Vent Horizontal Direct Vent Using TWT with Vertical Intake General System installationHot Water Heating Hydronic Equipment Internal Contaminants Remote Probe Installation ProcedureHard Water Conditions Thermal Expansion Closed SystemGas Supply Line Sizing Gas ConnectionsTypical PRIMARY, Secondary Piping ONE VF Model VW HOT Water Supply Boiler with Vertical Tank ONE VF Model VW HOT Water Supply Boiler with Horizontal Tank Wiring Suggested Pipe Size For Multiple Gas Appliances Propane Gas Suggested Pipe Size For Multiple Gas Appliances Natural GasConnection Diagram Wiring DiagramPage VB/VW-500, 750 & 1000 Schematic Diagram Filling Hot Water Supply Boiler Installation Filling and Purging of Heating Boiler InstallationOperation Purging Gas LineRisk of Scalds Water Temperature RegulationMCB/FCB Dipswitches MCB Ten Position DipswitchMCB Three position Dipswitch Lighting & Operation Instructions for Models VB/VW 500, 750 Setting of the Test Mode AdjustmentHigh Fire Setting Natural GAS PropaneInputs to MCB Operating Sequence Temperature Setpoints System Control AlgorithmUIM Operating Procedures Description of FCB control states OperatingSetpointAdjustmentProcedureHighLimitDifferentialSetpointAdjustment Procedure UIM LED’s Fault Messages and Troubleshooting GuideFault Displayed Description Red LED Lockout Troubleshooting Ignition SystemTroubleshooting Gas Valve Preventative maintenanceMain Burner Relief Valve Burner Maintenance Combustion Air Filter Blower CompartmentHeatExchangerPreventativeMaintenance Venting MaintenanceTube Cleaning Procedure Mechanical Removal of Deposits Replacement PartsPage Page Page Limited Warranty Tennessee Waltz Parkway, Ashland City, TN Phone