A.O. Smith BTI 120 warranty Horizontal Storage Tank

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MEDIUM TEMPERATURE - ONE HEATER WITH AUXILIARY STORAGE TANK FORCED

CIRCULATION WITH OR WITHOUT BUILDING RECIRCULATION

VERTICAL STORAGE TANK

* PIPE RELIEF VALVE TO OPEN DRAIN.
**WHEN USING AN A.O. SMITH T-140, -200,
-350 OR -400 STORAGE TANK, USE
LOWER 3/4” OPENING FOR TANK
TEMPERATURE CONTROL.
IF BUILDING CIRCULATING LOOP IS USED,
CONNECT TO AN OPENING NEAR THE
BOTTOM OF THE TANK.	HORIZONTAL STORAGE TANK
	HORIZONTAL STORAGE TANK

CAUTION: IF BUILDING COLD WATER SUPPLY HAS A

BACKFLOW PREVENTER, CHECK VALVE OR WATER

METER WITH CHECK VALVE. PROVISIONS FOR

THERMAL EXPANSION OF WATER IN THE HOT WATER

SYSTEM MUST BE PROVIDED.

*PIPE RELIEF VALVE TO OPEN DRAIN

INSTALL IN ACCORDANCE WITH LOCAL CODES.

DANGER

TEMPERATURE SETTING SHOULD NOT EXCEED SAFE

USE TEMPERATURE AT FIXTURES. SEE WATER

TEMPERATURE CONTROL WARNING ON PAGE 25. IF

HIGHER PREHEAT TEMPERATURESARE NECESSARYTO

OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTI-

SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES.

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Contents

Models BTI 120 Thru 400/A Commercial GAS, GLASS-LINED, TANK-TYPE Water HeaterGasand Electrical Characteristics ROUGH-IN-DIMENSIONSFront View TOP View Back View ROUGH-IN-DIMENSIONS Table of Contents ForewordGeneral Safety Information High Limit Switch FeaturesHigh Altitude Installations Electronic Ignition Control Exhaust Inducer Blower AssyCirculating Pump Dishwashing Machine RequirementLeveling ClearancesHard Water AIR RequirementsVenting Multiple Heater ManifoldModel BTI-154 Type B GAS VentModel BTI-120 Model BTI-310 Model BTI-250Model BTI-275 Water Line Connections Water Potable Heating and SpaceGAS Piping System ConnectionsGAS Piping and Dirt LEG Installation GAS Pressure RegulatorGAS Meter Size Natural Gases only Type of GASHeater Wiring Single Unit Wiring Diagram BTI-120 Through 400AInstallation DIAGRAMS-TOP INLET/OUTLET Usage Tube Inlet InstallationGeneral Code RestrictionsVertical Storage Tank and Forced Circulation Horizontal Storage Tank and Forced CirculationPage Installation DIAGRAMS-SIDE INLET/OUTLET Usage Circulating Return Line ConnectionHeater with Mixing Valve and Recirculated Sanitizing Loop TWO PRE-HEATERS with Booster Heater Horizontal Storage Tank Model Dimension a Manifold KitsOperation Sequence of Operation For Your Safety Read Before Operating What to do if YOU Smell GASPreventive Maintenance Water Temperature ControlCheck the Ignitor Assembly Ignitor AssemblyRemote Storage Tank Temperature Control GAS ValvesChecking the Input Venting SystemHOT Water Odor Anode ROD InspectionFlushing DrainingDeliming Solvents Tank Cleanout ProcedureDeliming Using FLO-JUG Method Service Replacement PartsSystem Diagnostics Ignition Module SystemSequence of Operation Flow Chart YESRemedy Operational ChecklistComplaint Cause User Serviceman Service and Repair Expenses Claim ProcedureKeepthiswarrantypostedadjacenttotheheaterforfuturereference Tank