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Water Heater
A.O. Smith
SERIES 100, SERIES 101
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A.O. SMITH WATER PRODUCTS COMPANY
500 TENNESSEE WALTZ PARKWAY
ASHLAND CITY, TN 37015
PHONE: 1-800-433-2545 FAX: 1-800-433-2515
www.aosmithwaterheaters.com / email:
part
s@hotwater
.com
Contents
Main
CYCLONE Xi Model BTH 120-250(A)
SERIES 100 AND 101
COMMERCIAL GAS WATER HEATER
GAS-FIRED POWER BURNER FOR DOMESTIC HOT WATER
INSTALLATION OPERA TION SERVICE MAINTENANCE LIMITED W ARRANTY
FOREWORD
CYCLONE Xi BTH 120 - 250A ROUGH-IN-DIMENSIONS
DANGER
FEATURES
WATER TEMPERATURE CONTROL
TABLE OF CONTENTS
HIGH LIMIT SWITCH (E.C.O.)
DISHWASHING MACHINE REQUIREMENT
INSTALLATION INSTRUCTIONS
REQUIRED ABILITY
INSULATION BLANKETS
WARNING
LOCATING THE HEATER WARNING
WARNING
CLEARANCES
CHEMICAL VAPOR CORROSION
WARNING
VENTING WARNING
WARNING
VENT PIPE TERMINATION
INSTALLATION REQUIREMENTS FOR THE COMMONWEAL TH OF MASSACHUSETTS
Page
Page
WARNING
DIRECT VENTING
WARNING
DIRECT VENT TERMINAL INSTALLATION
INSTALLATION SEQUENCE
CAUTION
FOR ALL MODELS
VERTICAL VENT TERMINAL INSTALLATION
INSTALLATION SEQUENCE
VENT PIPE PREPARATION
INSTALLATION OF VENT SYSTEM WARNING
LOW GAS PRESSURE SWITCH
ON/OFF SWITCH
CAUTION
GAS PIPING
CAUTION
CONTROLS AND SWITCHES
BLOWER PROVER SWITCH
BLOCKED OUTLET PROVER SWITCH
WARNING
CONNECTION OF GAS PIPE
PURGING
CAUTION
GAS METER SIZE - CITY GASES ONLY
SYSTEM CONNECTIONS
THERMOMETERS (Not Supplied)
RELIEF VALVE
WARNING
WATER LINE CONNECTIONS
HEATER WIRING
Page
3. Adjusting the Operating Set Point
2. Operating States
4. Changing the Display Units
5. Fault and Warning Conditions
6. Access to the Current Fault or Warning
7. Viewing the Fault History
8. Viewing Information About the Heater
PRIOR TO START UP
ADJUSTMENT PROCEDURE
INITIAL START-UP - 199 AND 250 MODELS
OPERATING INSTRUCTIONS
ADJUSTMENT PROCEDURE
INITIAL START-UP - 120 AND 150 MODELS
CATHODIC PROTECTION
PRECAUTIONS
GENERAL INFORMATION
POWER BURNER
HIGH LIMIT
HIGH ALTITUDE INSTALLATIONS WARNING
MAINTENANCE
Page
Page
Page
POWERED ANODE SYSTEM
FLUSHING
DRAINING
SEDIMENT REMOVAL
LIME SCALE REMOVAL
DRAIN VALVE AND ACCESS P ANELS
RELIEF VALVE
CAUTION
CIRCULATING PUMP
VENT SYSTEM
INSTALLATION DIAGRAMS
ONE TEMPERATURE - ONE HEATER VERTICAL STORAGE T ANK FORCED CIRCULA TION
*
TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE
DANGER
TWO TEMPERATURE - TWO HEATERS HIGH TEMPERATURE
TWO TEMPERATURE - THREE HEATERS (TWO PRE-HEA TERS/ONE BOOSTER HEATER)
DANGER
TWO TEMPERATURE - TWO HEATERS (ONE PRE-HEATER/ONE BOOSTER HEA TER)
DANGER
TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE WITH RECIRCULATION OF SANITIZING LOOP
MANIFOLD KITS
CHECKLIST AND SERVICE INFORMATION
WARNING
BURNER OPERATIONAL PROBLEMS
NOT ENOUGH OR NO HOT WATER
WATER IS TOO HOT
MOTOR WILL NOT RUN
MOTOR RUNS, PREPURGE TIME ELAPSES BUT MAIN FLAME NOT ESTABLISHED.
MOTOR RUNS, BURNER LIGHTS MOMENTARILY , THEN LOCKS OUT
CAUTION
GAS FAILS TO SHUT OFF
Model BTH Limited Warranty