A.O. Smith BTN 120 THRU 400/A Series warranty Water Line Connections, THERMOMETERS Not Supplied

Contents COMMERCIAL GAS, GLASS-LINED, TANK-TYPE WATER HEATER INSTALLATION OPERATION MAINTENANCE LIMITED WARRANTYMODELS BTN 120 THRU 400/A Series FRONT VIEW ROUGH-IN-DIMENSIONSTABLE 1. ROUGH-IN-DIMENSIONS TABLE 3. GASAND ELECTRICAL CHARACTERISTICSFOREWORD TABLE OF CONTENTSCHEMICAL VAPOR CORROSION GENERAL SAFETY INFORMATIONPRECAUTIONS GROUNDING INSTRUCTIONSELECTRONIC IGNITION CONTROL FEATURESHIGH ALTITUDE INSTALLATIONS HIGH LIMIT SWITCHLOCATING THE HEATER CIRCULATING PUMPDISHWASHING MACHINE REQUIREMENT UNCRATINGAIR REQUIREMENTS LEVELINGCLEARANCES HARD WATERCONFINED SPACE VENTINGMULTIPLE HEATER MANIFOLD UNCONFINED SPACETYPE B GAS VENT Multiple Gas Fired Tank-Type Heaters TABLE 6. TECHNICAL DATA VENTINGTABLE 6. TECHNICAL DATA VENTING Continued RELIEF VALVE WATER LINE CONNECTIONSWATER POTABLE HEATING AND SPACE HEATING See pages THERMOMETERS Not SuppliedDANGER INSTALLATION DIAGRAMS-TOP INLET/OUTLET USAGEGENERAL CODE RESTRICTIONSTEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE CONTROL VERTICAL STORAGE TANK AND FORCED CIRCULATIONHORIZONTAL STORAGE TANK AND FORCED CIRCULATION TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USEWITH RECIRCULATION OF SANITIZING LOOP TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE STORAGEWITH OR WITHOUT BUILDING RECIRCULATION INSTALLATION DIAGRAMS-SIDE INLET/OUTLET USAGETWO TEMPERATURE - TWO HEATERS, ONE PRE-HEATER/ONE - BOOSTER HEATER HEATER WITH MIXING VALVE AND RECIRCULATED SANITIZING LOOP ONE OR TWO TEMPERATURE - ONE HEATERS,HIGH TEMPERATURESTORAGE WITH OR WITHOUT RECIRCULATION HEATER WITH OR WITHOUT MIXING VALVETWO PRE-HEATERS WITH BOOSTER HEATER TWO TEMPERATURE - TWO PRE-HEATERS WITH MIXING VALVE OR BOOSTERHEATER WITH OR WITHOUT BUILING RECIRCULATION TWO PRE-HEATERS WITH MIXING VALVEHORIZONTAL STORAGE TANK MEDIUM TEMPERATURE - ONE HEATER WITH AUXILIARY STORAGE TANK FORCEDCIRCULATION WITH OR WITHOUT BUILDING RECIRCULATION VERTICAL STORAGE TANKFOUR UNIT MANIFOLD KIT MANIFOLD KITSTWO UNIT MANIFOLD KIT THREE UNIT MANIFOLD KITFIGURE 9 - SINGLE UNIT WIRING DIAGRAM BTN-120 THROUGH 400A HEATER WIRINGCUBIC FEET PER HOUR GAS PIPINGGAS PRESSURE REGULATOR TABLE 7 - GAS SUPPLY LINE SIZES IN INCHES MAXIMUM CAPACITY OF PIPE IN1 CU. FT. OF GAS AT FULL CAPACITY OPERATIONMANIFOLD GAS PRESSURE IN INCHES OF WATER COLUMN ALL MODELS APPROXIMATE TIME REQUIRED TO CONSUMESEQUENCE OF OPERATION OPERATING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE OPERATINGLIGHTING AND OPERATION INSTRUCTIONS WATER TEMPERATURE CONTROL PREVENTIVE MAINTENANCECHECK THE IGNITOR ASSEMBLY IGNITOR ASSEMBLYFIGURE 11, IGNITOR MAIN BURNERGAS VALVES CHECKING THE INPUTANODE ROD INSPECTION VENTING SYSTEMREMOTE STORAGE TANK TEMPERATURE CONTROL HOT WATER ODORDELIMING USING FLO-JUG METHOD RECOMMENDED PROCEDURE FORTANK CLEANOUT PROCEDURE DELIMING SOLVENTSELECTRICAL SERVICING SERVICESYSTEM DIAGNOSTICS IGNITION MODULE SYSTEMREPLACEMENT PARTS REPLACEMENT PARTS, SERVICE HANDBOOKS AND TRAINING AIDSSEQUENCE OF OPERATION FLOW CHART COMPLAINT OPERATIONAL CHECKLISTSERVICEMAN REMEDYKEEPTHISWARRANTYPOSTEDADJACENTTOTHEHEATERFORFUTUREREFERENCE Model BTN Limited Warranty4. SERVICEANDREPAIREXPENSES 6. CLAIMPROCEDURE