A.O. Smith 500A, 300A warranty Installation Diagrams, U T I O N if Building

Page 30

INSTALLATION DIAGRAMS

ONE TEMPERATURE - ONE HEATER VERTICAL STORAGE TANK FORCED CIRCULATION

WITH OR WITHOUT BUILDING RECIRCULATION

C A U T I O N : IF BUILDING

COLD WATER SUPPLY HAS

A BACK-FLOW PREVENTER,

CHECK VALVE OR WATER

METER WITH CHECK VALVE

PROVISIONS FOR THERMAL

EXPANSION OF WATER IN THE

HOT WATER SYSTEM MUST

BE PROVIDED

NOTE: CONNECT RETURN

LINE FROM HOT WATER

CIRCULATING LOOP (IF USED)

TO COLD WATER INLET LINE.

* PIPE TO OPEN DRAIN

INSTALL IN ACCORDANCE

WITH LOCAL CODES

ONE TEMPERATURE - ONE HEATER HORIZONTAL STORAGE TANK

FORCED CIRCULATION WITH OR WITHOUT BUILDING RECIRCULATION

DANGER

TEMPERATURE SETTING SHOULD NOT EXCEED

SAFE TEMPERATURE AT FIXTURES. SEE WATER

TEMPERATURE CONTROL WARNING ON PAGE

3.IF HIGHER PREHEAT TEMPERATURES ARE

NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES.

*PIPE TO OPEN DRAIN

INSTALL IN ACCORDANCE

WITH LOCAL CODES

30

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Contents Cyclone Xi Model BTH 300A, 400A, 500A ROUGH-IN-DIMENSIONS ForewordTable of Contents FeaturesQuick Installation Tips Horizontal Sidewall Venting Vertical Rooftop VentingWater Temperature Setpoint Adjustment Procedure High Limit Switch E.C.ODishwashing Machine Requirement Required Ability Installation InstructionsCirculating Pump Insulation BlanketsAIR Requirements ClearancesHard Water Unconfined SpaceInstallation of Carbon Monoxide Detectors VentingCanadian Direct Vent US Horizontal Vent Direct Vent Terminal Installation Vent Pipe TerminationDirect Venting Installation Sequence Vertical Vent Terminal InstallationInstallation of Vent System Vent Length TableControls and Switches GAS Piping HOT Surface IgniterConnection of GAS Pipe System Connections Heater Wiring Water Potable Heating and Space HeatingBTH 300 Wiring Diagram BTH 400 and 500 Wiring Diagram Sequence of Operation OperationElectronic Control OverviewAdjusting the Operating Set Point Fault and Warning Conditions Changing the Display UnitsExample of a Warning Example of a Fault Advanced Diagnostics Information Access to the Current Fault or WarningViewing the Fault History Viewing Information About the HeaterOperating Instructions Prior to Start UP Required AbilityOperating Instructions Maintenance General InformationSediment Removal FlushingDraining Lime Scale RemovalPowered Anode System Drain Valve and Access PanelsVent System Installation Diagrams U T I O N if BuildingPage Must be Identical Heaters Pipe Relief Valve to Open Drain Page Multiple Unit Installations Troubleshooting Motor will not RUN Motor RUNS, Burner Lights Momentarily Then Locks OUTReplacement Parts Noisy Burner OperationGAS Fails to Shut OFF Model BTH Limited Warranty