A.O. Smith BTR 151 THRU 201/A warranty Placetheseinstructionsadjacenttoheater

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MODELS BTR 151 THRU 201/A

COMMERCIAL GAS, GLASS-LINED, TANK-TYPE WATER HEATER

• INSTALLATION • OPERATION • MAINTENANCE • LIMITED WARRANTY

Thank you for buying this energy efficient water heater from A.O. Smith Water Products Company. We appreciate your confidence in our products.

CAUTION

TEXT IN BLACK BOLD TYPE OR UNDERLINED CONTAINS

INFORMATION RELATIVE TO YOUR SAFETY. PLEASE READ

THOROUGHLY BEFORE INSTALLING AND USING THIS

APPLIANCE.

	A DIVISION OF A. O. SMITH CORPORATION
	McBEE, SOUTH CAROLINA, USA
	www.aosmithwaterheaters.com
	PLACETHESEINSTRUCTIONSADJACENTTOHEATER
	ANDNOTIFYOWNERTOKEEPFORFUTUREREFERENCE.
Printed in U.S.A. 1004	PART NO. 196308-001

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Contents Andnotifyownertokeepforfuturereference PlacetheseinstructionsadjacenttoheaterDivision of A. O. Smith Corporation Recovery Rating Capacities GPH AT Temperature Rise Shown ROUGH-IN-DIMENSIONSForeword Heater Performance DataTable of Contents High Altitude Installations FeaturesExtended NON-USE Periods Insulation BlanketsExhaust Inducer Blower Assembly High Limit SwitchElectronic Ignition Control Circulating PumpUncrating Required AbilityLocating the Heater LevelingTo the Heater and Risk of Fire or Explosion Unconfinedspace VentingConfinedspace Water Line Connections Multiple Heater ManifoldWater Potable Heating Space Heating Relief ValvePurging GAS PipingGAS Pressure Regulator Length Nominal Iron Pipe Sizes Inches FeetSingle Unit Wiring Diagram Heater WiringGeneral Installation DiagramsHorizontal Storage Tank and Forced Circulation Vertical Storage Tank and Forced CirculationPage Circulating Return Line Connection Installation DIAGRAMS-SIDE INLET/OUTLET UsageHeater with Mixing Valve and Recirculated Sanitizing Loop TWO PRE-HEATERS with Booster Heater Horizontal Storage Tank Sequence of Operation OperationWhat to do if YOU Smell GAS For Your Safety Read Before OperatingWater Temperature Control Preventive MaintenanceCheck the Ignitor Assembly Ignitor AssemblyGAS Valves Remote Storage Tank Temperature ControlChecking the Input Venting SystemAnode ROD Inspection HOT Water OdorFlushing DrainingDeliming Using FLO-JUG Method Tank Cleanout ProcedureDeliming Solvents Replacement Parts ServiceSystem Diagnostics Ignition Module SystemYES Sequence of Operation Flow ChartComplaint Cause User Serviceman Operational ChecklistRemedy Claimprocedure ServiceandrepairexpensesKeepthiswarrantypostedadjacenttotheheaterforfuturereference TankSmith Water Products Company