A.O. Smith SERIES 100 - Manuals

5 LOCATING THE HEATER WARNING THERE IS A RISK IN USING FUEL BURNING APPLIANCES SUCH AS GASWATER HEATERS IN ROOMS, GARAGES OR OTHER AREAS WHEREGASOLINE, OTHER FLAMMABLE LIQUIDS OR ENGINE DRIVEN EQUIPMENTOR VEHICLES ARE STORED, OPERATED OR REPAIRED. FLAMMABLEVAPORS ARE HEAVY AND TRAVEL ALONG THE FLOOR...

10 IMPORTANT The vent system must terminate so that proper clearances are maintainedas cited in local codes or the current editions of the National Fuel Gas Code,ANSI Z223.1/NFPA 54 or the Natural Gas and Propane Installation Code, CAN/CSA-B149.1. Do not terminate the exhaust vent terminal over publ...

13 LOW GAS PRESSURE SWITCH (SEE FIGURE 12) The Low Gas Switch (LGS) is a single-pole, normally open pressure switchthat will close its contacts when a rising pressure of 5.0 in. (1.25Kpa) W.C.is encountered. The contacts will open when the pressure falls below thefixed set point of 4.8"WC (1.18K...

15 DISCONNECT THE APPLIANCE AND ITS MANUAL GAS SHUTOFF VALVEFROM THE GAS SUPPLY PIPING SYSTEM DURING ANY SUPPLY PRESSURETESTING EXCEEDING 1/2 PSIG (3.45Kpa). GAS SUPPLY LINE MUST BECAPPED WHEN DISCONNECTED FROM THE HEATER. FOR TEST PRESSURESOF 1/2 PSIG (3.45Kpa) OR LESS, THE APPLIANCE NEED NOT BEDIS...

16 CONDITIONER MUST BE INSTALLED IF THE ABOVE CONDITIONS EXIST.MALFUNCTIONS CAUSED BY A POOR ELECTRICAL SUPPLY ARE NOTCOVERED UNDER YOUR WARRANTY. The controller is wired to the heater as shown in Figure 15. The modeland rating plate provides the electrical information needed to size thecomplete hea...

17 USING THE ELECTRONIC CONTROLLER 1. Overview Interaction with the water heater controller is done through an up, a down, and three operation buttons. These buttons are illustrated to theright. Operation of the three lower buttons is defined immediately above them on the screen. The [UP] and [DN] b...

18 3. Adjusting the Operating Set Point The Operating Set Point of this water heater determines the regulated temperature for the water in the tank. This parameter is adjusted in theTemperature menu. Items in this menu allow you to monitor differenttemperature readings in the tank along with adjusti...

19 4. Changing the Display Units The display interface to the heater has the option of selecting betweendegrees Fahrenheit and degrees Celsius for temperature displays. Thiscan be found in the “Display Settings” menu. Also in this menu, you mayadjust how the backlight operates and the contrast of th...

20 ACTION: To get to the current fault information screen, press Menu. DISPLAY: ACTION: Press the DOWN button to highlight "current Fault" and press Select. DISPLAY: ACTION: Press the DOWN button for more information. DISPLAY: 7. Viewing the Fault History The controller for this water heater...

21 5. Check the vent system seams and joints and ensure that there is no discharge of flue products into the room. 6. Check the input rate. For appliance installation locations with elevations above 6500 feet(1982 meters) refer to HIGH ALTITUDE INSTALLATIONS section of thismanual. a. Attach a pressu...

22 WARNING UNDER NO CIRCUMSTANCES SHOULD THE INPUT EXCEED THE RATESHOWN ON THE HEATER RATING PLATE. OVER FIRING COULD RESULT INDAMAGE OR SOOTING OF THE HEATER. CATHODIC PROTECTION CAUTION HYDROGEN GAS CAN BE PRODUCED IN A HOT WATER SYSTEM SERVEDBY THIS HEATER THAT HAS NOT BEEN USED FOR A LONG PERIOD...

23 FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. BTH 120 MODELS ONLY.

25 OPERATING INSTRUCTIONS TURN OFF GAS TO APPLIANCE FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. BTH 199/250 MODELS ONLY. OPERATING INSTRUCTIONS TURN OFF GAS TO...

28 ONE TEMPERATURE - ONE HEATER HORIZONTAL STORAGE TANK FORCED CIRCULATION WITH OR WITHOUT BUILDING RECIRCULATION DANGER TEMPERATURE SETTING SHOULD NOT EXCEEDSAFE TEMPERATURE AT FIXTURES. SEE WATERTEMPERATURE CONTROL WARNING ON PAGE 4.I F H I G H E R P R E H E AT T E M P E R AT U R E S A R ENECESSAR...

29 * PIPE RELIEF VALVE TO OPEN DRAIN. N O T E : I F T E M P E R E D WAT E R I S RECIRCULATED, RETURN LINE SHOULD BECONNECTED AT POINT “A”. INSTALL IN ACCORDANCE WITH LOCALCODES. TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE WITH OR WITHOUT BUILDING RECIRCULATION DANGER TEMPERATURE SETTING SHOULD NOT...

30 TWO TEMPERATURE - TWO HEATERS HIGH TEMPERATURE WITH OR WITHOUT BUILDING RECIRCULATION TWO TEMPERATURE - THREE HEATERS (TWO PRE-HEATERS/ONE BOOSTER HEATER) WITH OR WITHOUT BUILDING RECIRCULATION MUST BE IDENTICAL HEATERS F O R M U LT I P L E H E AT E R I N S TA L L AT I O N S E E M A N I F O L D K...

33 MANIFOLD KITS Precision cut type “L” all copper A.O. Smith manifold kits assure water flow balance of all units. Without this balance, the full waterheating and storage potential of the system cannot be achieved. Plus, the units with the higher water flow may have a shortened life. Dimensions sho...

34 CHECKLIST AND SERVICE INFORMATION IMPORTANT The installer may be able to observe and correct certain problems whichmight arise when the unit is put into operation or when it is re-fired after aprolonged shutdown. HOWEVER, it is recommended that only qualifiedservicemen, using appropriate test equ...

36 Model BTH Limited Warranty A. O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this water heater. 1. THE TANK If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable ...

40 A.O. SMITH WATER PRODUCTS COMPANY 500 TENNESSEE WALTZ PARKWAY ASHLAND CITY, TN 37015 PHONE: 1-800-433-2545 FAX: 1-800-433-2515 w w w.aosmithwaterheaters.com / email: [email protected]