Danger | A.O. Smith BTN 120 THRU 400/A Series specification

TWO TEMPERATURE - TWO PRE-HEATERS WITH MIXING VALVE OR BOOSTER

HEATER WITH OR WITHOUT BUILING RECIRCULATION

TWO PRE-HEATERS WITH MIXING VALVE

DANGER

TEMPERATURE SETTING SHOULD NOT

EXCEED SAFE USE TEMPERATURE AT

FIXTURES. SEE WATER TEMPERATURE

CONTROL WARNING ON PAGE 25. IF HIGHER

PREHEAT TEMPERATURES ARE NECESSARY

TO OBTAIN ADEQUATE BOOSTER OUTPUT,

ADD AN ANTI-SCALD VALVE FOR HOT WATER

SUPPLIED TO FIXTURES.

TWO PRE-HEATERS WITH BOOSTER HEATER

Page 17

Image 17

A.O. Smith BTN 120 THRU 400/A Series warranty Two Temperature - Two Pre-Heaters With Mixing Valve Or Booster, Danger

Contents

COMMERCIAL GAS, GLASS-LINED, TANK-TYPE WATER HEATER INSTALLATION OPERATION MAINTENANCE LIMITED WARRANTYMODELS BTN 120 THRU 400/A Series TABLE 1. ROUGH-IN-DIMENSIONS ROUGH-IN-DIMENSIONSTABLE 3. GASAND ELECTRICAL CHARACTERISTICS FRONT VIEW FOREWORD TABLE OF CONTENTS PRECAUTIONS GENERAL SAFETY INFORMATIONGROUNDING INSTRUCTIONS CHEMICAL VAPOR CORROSION HIGH ALTITUDE INSTALLATIONS FEATURESHIGH LIMIT SWITCH ELECTRONIC IGNITION CONTROL DISHWASHING MACHINE REQUIREMENT CIRCULATING PUMPUNCRATING LOCATING THE HEATER CLEARANCES LEVELINGHARD WATER AIR REQUIREMENTS MULTIPLE HEATER MANIFOLD VENTINGUNCONFINED SPACE CONFINED SPACE TYPE B GAS VENT Multiple Gas Fired Tank-Type Heaters TABLE 6. TECHNICAL DATA VENTING TABLE 6. TECHNICAL DATA VENTING Continued WATER POTABLE HEATING AND SPACE HEATING See pages WATER LINE CONNECTIONSTHERMOMETERS Not Supplied RELIEF VALVE GENERAL INSTALLATION DIAGRAMS-TOP INLET/OUTLET USAGECODE RESTRICTIONS DANGER HORIZONTAL STORAGE TANK AND FORCED CIRCULATION VERTICAL STORAGE TANK AND FORCED CIRCULATIONTEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE CONTROL WITH RECIRCULATION OF SANITIZING LOOP TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE STORAGE WITH OR WITHOUT BUILDING RECIRCULATION INSTALLATION DIAGRAMS-SIDE INLET/OUTLET USAGETWO TEMPERATURE - TWO HEATERS, ONE PRE-HEATER/ONE - BOOSTER HEATER STORAGE WITH OR WITHOUT RECIRCULATION ONE OR TWO TEMPERATURE - ONE HEATERS,HIGH TEMPERATUREHEATER WITH OR WITHOUT MIXING VALVE HEATER WITH MIXING VALVE AND RECIRCULATED SANITIZING LOOP HEATER WITH OR WITHOUT BUILING RECIRCULATION TWO TEMPERATURE - TWO PRE-HEATERS WITH MIXING VALVE OR BOOSTERTWO PRE-HEATERS WITH MIXING VALVE TWO PRE-HEATERS WITH BOOSTER HEATER CIRCULATION WITH OR WITHOUT BUILDING RECIRCULATION MEDIUM TEMPERATURE - ONE HEATER WITH AUXILIARY STORAGE TANK FORCEDVERTICAL STORAGE TANK HORIZONTAL STORAGE TANK TWO UNIT MANIFOLD KIT MANIFOLD KITSTHREE UNIT MANIFOLD KIT FOUR UNIT MANIFOLD KIT FIGURE 9 - SINGLE UNIT WIRING DIAGRAM BTN-120 THROUGH 400A HEATER WIRING GAS PRESSURE REGULATOR GAS PIPINGTABLE 7 - GAS SUPPLY LINE SIZES IN INCHES MAXIMUM CAPACITY OF PIPE IN CUBIC FEET PER HOUR MANIFOLD GAS PRESSURE IN INCHES OF WATER COLUMN ALL MODELS OPERATIONAPPROXIMATE TIME REQUIRED TO CONSUME 1 CU. FT. OF GAS AT FULL CAPACITY SEQUENCE OF OPERATION OPERATING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE OPERATINGLIGHTING AND OPERATION INSTRUCTIONS CHECK THE IGNITOR ASSEMBLY PREVENTIVE MAINTENANCEIGNITOR ASSEMBLY WATER TEMPERATURE CONTROL GAS VALVES MAIN BURNERCHECKING THE INPUT FIGURE 11, IGNITOR REMOTE STORAGE TANK TEMPERATURE CONTROL VENTING SYSTEMHOT WATER ODOR ANODE ROD INSPECTION TANK CLEANOUT PROCEDURE RECOMMENDED PROCEDURE FORDELIMING SOLVENTS DELIMING USING FLO-JUG METHOD SYSTEM DIAGNOSTICS SERVICEIGNITION MODULE SYSTEM ELECTRICAL SERVICING REPLACEMENT PARTS REPLACEMENT PARTS, SERVICE HANDBOOKS AND TRAINING AIDSSEQUENCE OF OPERATION FLOW CHART SERVICEMAN OPERATIONAL CHECKLISTREMEDY COMPLAINT 4. SERVICEANDREPAIREXPENSES Model BTN Limited Warranty6. CLAIMPROCEDURE KEEPTHISWARRANTYPOSTEDADJACENTTOTHEHEATERFORFUTUREREFERENCE

A.O. Smith BTN 120 THRU 400/A Series warranty Heater With Or Without Builing Recirculation, Danger

Models: BTN 120 THRU 400/A Series

TWO TEMPERATURE - TWO PRE-HEATERS WITH MIXING VALVE OR BOOSTER

HEATER WITH OR WITHOUT BUILING RECIRCULATION

TWO PRE-HEATERS WITH MIXING VALVE

TWO PRE-HEATERS WITH BOOSTER HEATER