A.O. Smith BTR 151 THRU 201/A instruction

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

Contents

Andnotifyownertokeepforfuturereference PlacetheseinstructionsadjacenttoheaterDivision of A. O. Smith Corporation Recovery Rating Capacities GPH AT Temperature Rise Shown ROUGH-IN-DIMENSIONSForeword Heater Performance Data Table of Contents High Altitude Installations FeaturesExtended NON-USE Periods Insulation Blankets Exhaust Inducer Blower Assembly High Limit SwitchElectronic Ignition Control Circulating Pump Uncrating Required AbilityLocating the Heater Leveling To the Heater and Risk of Fire or Explosion Unconfinedspace VentingConfinedspace Water Line Connections Multiple Heater ManifoldWater Potable Heating Space Heating Relief Valve Purging GAS PipingGAS Pressure Regulator Length Nominal Iron Pipe Sizes Inches Feet Single Unit Wiring Diagram Heater Wiring General Installation Diagrams Horizontal Storage Tank and Forced Circulation Vertical Storage Tank and Forced CirculationPage Circulating Return Line Connection Installation DIAGRAMS-SIDE INLET/OUTLET Usage Heater with Mixing Valve and Recirculated Sanitizing Loop TWO PRE-HEATERS with Booster Heater Horizontal Storage Tank Sequence of Operation Operation What to do if YOU Smell GAS For Your Safety Read Before Operating Water Temperature Control Preventive MaintenanceCheck the Ignitor Assembly Ignitor Assembly GAS Valves Remote Storage Tank Temperature ControlChecking the Input Venting System Anode ROD Inspection HOT Water OdorFlushing Draining Deliming Using FLO-JUG Method Tank Cleanout ProcedureDeliming Solvents Replacement Parts ServiceSystem Diagnostics Ignition Module System YES Sequence of Operation Flow Chart Complaint Cause User Serviceman Operational ChecklistRemedy Claimprocedure ServiceandrepairexpensesKeepthiswarrantypostedadjacenttotheheaterforfuturereference Tank Smith Water Products Company