Instruction/ maintenance manual of the product BTR 151 THRU 201/A A.O. Smith
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1 MODELS BTR 151 THRU 201/A COMMERCIAL GAS, GLASS-LINED, TANK-TYPE WATER HEATER • INSTALLATION • OPERATION • MAINTENANCE • LIMITED WARRANTY PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE. Printed in U.
2 FOREWORD These designs comply with ANSI Z21.10.3 as a Booster type water heater . Detailed installation diagrams are found in this manual. These diagrams will serve to provide the installer with a reference for the materials and methods of piping necessary .
3 GENERAL SAFETY INFORMA TION PRECAUTIONS DO NOT USE THIS APPLIANCE IF ANY P ART HAS BEEN UNDER W A TER. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water .
4 OPERA TION OF THESE F ANS CAN PRODUCE A NEGA TIVE DRAFT IN THE AREA OF THE W A TER HEA TER PREVENTING THE PRODUCTS OF COMBUSTION FROM EXHAUSTING THROUGH THE CHIMNEY OR VENT PIPE.
5 possibility of changing the orientation by accidentally overtightening the inlet supply . Improper orientation of the Eliminator may cause temperature buildup issues or spells of colder than usual water temperatures. HIGH LIMIT SWITCH The digital thermostat (see Figure 3) contains the high limit (energy cutoff) sensor .
6 INST ALLA TION INSTRUCTIONS REQUIRED ABILITY INST ALLA TION OR SERVICE OF THIS W A TER HEA TER REQUIRES ABILITY EQUIV ALENT TO THA T OF A LICENSED TRADESMAN IN THE FIELD INVOL VED. PLUMBING , AIR SUPPL Y , VENTING , GAS SUPPL Y AND ELECTRICAL WORK A RE REQUIRED.
7 CARBONING OR SOOTING OF THE COMBUSTION CHAMBER, BURNERS AND FLUE TUBES AND CREA TES A RISK OF ASPHYXIA TION. Where an exhaust fan is supplied in the same room with a heater , sufficient openings for air must be provided in the walls. UNDERSIZED OPENINGS WILL CAUSE AIR TO BE DRA WN INTO THE ROOM THROUGH THE CHIMNEY , CAUSING POOR COMBUSTION.
8 FIGURE 7 • Where a separate vent connection is not available and the vent pipe from the heater must be connected to a common vent with an oil burning furnace, the vent pipe should enter the smaller common vent or chimney at a point above the large vent pipe.
9 GAS PIPING Contact your local gas service company to ensure that adequate gas service is available and to review applicable installation codes for your area. Size the main gas line in accordance with T able 2. The figures shown are for straight lengths of pipe at 0.
10 Do not subject the combination gas valve to inlet gas pressures of more than 14.0" W .C. - natural gas. A service regulator is necessary if higher gas pressures are encountered.
11 INST ALLA TION DIAGRAMS GENERAL The type, size and location of the relief valves must be in accordance with local codes. The locations of the relief valves shown in the installation diagrams are typical. The heater has a factory installed high temperature limit switch and temperature and pressure relief valve.
12 VERTICAL ST ORAGE T ANK AND FORCED CIRCULA TION DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE A T FIXTURES. SEE W A TER TEMPERATURE CONTROL WARNING ON P AGE 20. IF HIGHER PREHEA T TEMPERA TURES ARE NECESSAR Y TO OBT AIN ADEQUATE BOOSTER OUTPUT , ADD AN ANTI-SCALD V AL VE FOR HOT W A TER SUPPLIED TO FIXTURES.
13 DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERA TURE A T FIXTURES. SEE W A TER TEMPERA TURE CONTROL W ARNING ON P AGE 20. IF HIGHER PREHEA T TEMPERA TURES ARE NECESSARY T O OBTAIN ADEQUA TE BOOSTER OUTPUT , ADD AN ANTI-SCALD V AL VE FOR HOT W A TER SUPPLIED TO FIXTURES.
14 INST ALLA TION DIAGRAMS-SIDE INLET/OUTLET USAGE DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERA TURE A T FIXTURES. SEE W A TER TEMPERA TURE CONTROL W ARNING ON PAGE 20. IF HIGHER PREHEA T TEMPERA TURES ARE NECESSARY TO OBT AIN ADEQUA TE BOOSTER OUTPUT , ADD AN ANTI-SCALD V AL VE FOR HOT W A TER SUPPLIED TO FIXTURES.
15 ONE OR TWO TEMPERATURE - ONE HEATERS,HIGH TEMPERATURE STORAGE WITH OR WITHOUT RECIRCULATION HEATER WITH OR WITHOUT MIXING VALVE HEATER WITH MIXING VALVE AND RECIRCULATED SANITIZING LOOP NOTE 1: TOGGLE SWITCH CONTROLS 180°F (82°C) W A TER CIRCULATION.
16 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 DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERA TURE A T FIXTURES.
17 MEDIUM TEMPERATURE - ONE HEATER WITH AUXILIARY STORAGE TANK FORCED CIRCULATION WITH OR WITHOUT BUILDING RECIRCULATION VERTICAL STORAGE TANK HORIZONTAL STORAGE TANK DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERA TURE A T FIXTURES. SEE W A TER TEMPERA TURE CONTROL W ARNING ON P AGE 20.
18 OPERA TION IMPORT ANT A qualified person must perform the initial firing of the heater . At this time the user should not hesitate to ask the individual any questions which they may have in regard to the operation and maintenance of the unit. An Operational Checklist is included at the rear of this manual.
19 A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner . Do not try to light the burner by hand. B . BEFORE OPERA TING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor .
20 set for 120° to 180°F water temperature, but 120°F is the recommended starting point. It is suggested the dial be placed on the lowest setting which produces an acceptable hot water supply . This will always give the most energy efficient operation.
21 NOTE: 1. Remove main burners from unit. 2. Check that burner venturi and ports are free of foreign debris. 3. Clean burners with bristle brush and/or vacuum cleaner - DO NOT distort burner ports or pilot location. 4. Reinstall burners in unit. Make sure front and rear of burners are installed correctly in burner support brackets.
22 RELIEF V AL VE At least once a year , the temperature and pressure relief valve should be checked to ensure that it is in operating condition. Lift the lever at the top of the valve several times until the valve seats properly and operates freely .
23 FIGURE 14 DELIMING SOL VENTS A. O. Smith recommends the use of UN•LIME for deliming. UN•LIME is a patented food grade acid which is safe to handle and does not create the harmful fumes which are associated with other products. UN•LIME may be obtained from your dealer , distributor or the A.
24 the appliance. The indicator codes on the ignition module are as follows: 1 flash System lockout (retries or cycles exceeded) 2 flashes Pressure switch stuck close 3 flashes Pressure switch stuck o.
25 SEQUENCE OF OPERA TION FLOW CHART Description of this flow chart can be found in the “SEQUENCE OF OPERA TION” section found on page 18. Switch power on to unit.
26 OPERA TIONAL CHECKLIST This checklist in conjunction with “TROUBLESHOOTING” and the “SEQUENCE OF OPERA TION” should be used as an on-the-job troubleshooting guide to identify the cause of incorrect system operation and suggest a remedy for its correction.
27 Model BTR Limited Warranty A. O. Smith Corporation, the warrantor , extends the following LIMITED WARRANTY to the owner of this water heater . 1. THE T ANK If the glass-lined tank in this water hea.
28 A.O. SMITH WATER PRODUCTS COMPANY 5621 W. 115TH STREET • ALSIP, ILLINOIS 60803 PHONE: 1-800-433-2545 • FAX: 1-800-433-2515 www.aosmithwaterheaters.
An important point after buying a device A.O. Smith BTR 151 THRU 201/A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought A.O. Smith BTR 151 THRU 201/A yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data A.O. Smith BTR 151 THRU 201/A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, A.O. Smith BTR 151 THRU 201/A you will learn all the available features of the product, as well as information on its operation. The information that you get A.O. Smith BTR 151 THRU 201/A will certainly help you make a decision on the purchase.
If you already are a holder of A.O. Smith BTR 151 THRU 201/A, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime A.O. Smith BTR 151 THRU 201/A.
However, one of the most important roles played by the user manual is to help in solving problems with A.O. Smith BTR 151 THRU 201/A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device A.O. Smith BTR 151 THRU 201/A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
