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A.O. Smith BTI-80 - page 1
1 PRINTED IN U.S.A. 0803 MODELS BTI-80 AND 100 PLACE THESE INSTRUCTIONS ADJACENT TO HEA TER AND NOTIFY OWNER T O KEEP FOR FUTURE REFERENCE. COMMERCIAL GAS W A TER HEA TER Glass-Lined T ank-type W ater Heater P ART NO.195086-000 • INST ALLA TION • OPERA TION • SERVICE • MAINTENANCE • LIMITED W ARRANTY Thank you for buying this energy effic ...
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A.O. Smith BTI-80 - page 2
2 FOREWORD The design of models BTI-80 and 100 comply with the latest version of ANSI Z21.10.3/CSA 4.3 as automatic storage or automatic circulating tank type water heaters. Installation diagrams are found in this manual. These diagrams will serve to provide the installer with a reference for the materials and method of piping necessary . It is hig ...
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A.O. Smith BTI-80 - page 3
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 . IF THE UNIT IS EXPOSED TO THE FOLLOWING , DO NOT OPERA TE HEA TER UNTIL ALL C ...
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A.O. Smith BTI-80 - page 4
4 heater meets or exceeds the ASHRAE/IES 90.1b-1999 standards with respect to insulation and standby loss requirement making an insulation blanket unnecessary . WARNING Should you choose to apply an insulation blanket to this heater , you should follow these instructions. Failure to follow these instructions can result in fire, asphyxiation , serio ...
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A.O. Smith BTI-80 - page 5
5 (45.7 CM) OR MORE ABOVE THE FLOOR. THIS MA Y REDUCE THE RISK IF LOCA TION IN SUCH AN AREA CANNOT BE A VOIDED. DO NOT INST ALL THIS WA TER HEA TER DIRECTL Y ON A CARPETED FLOOR. A FIRE HAZARD MA Y RESUL T . Instead the water heater must be placed on a metal or wood panel extending beyond the full width and depth by at least 3 inches (7.6 CM) in an ...
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A.O. Smith BTI-80 - page 6
6 CAUTION: IF BUILDING COLD WA TER SUPPL Y HAS A BACK-FLOW PREVENTER, CHECK V AL VE OR W A TER METER WITH CHECK V AL VE, PROVISIONS FOR THERMAL EXP ANSION OF WA TER IN THE HOT WA TER SYSTEM MUST BE PROVIDED. FIGURE 3 CIRCULA TING RETURN LINE CONNECTIONS TEMPERED W A TER LOOP , IF USED, CONNECT TO POINT "A". STORED TEMPERA TURE W A TER LOO ...
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A.O. Smith BTI-80 - page 7
7 THERMOMETERS (Not Supplied) Thermometers should be obtained and field installed as shown in Figure 3. Thermometers are installed in the system as a means of detecting the temperature of the outlet water supply . COMBINA TION W A TER (POT ABLE) HEA TING AND SP ACE HEA TING 1 . All piping components connected to this unit for space heating applicat ...
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A.O. Smith BTI-80 - page 8
8 WIRING DIAGRAM AND SCHEMA TIC - FIGURE 4 HEA TER WIRING All electrical work must be installed in the United S tates in accordance with the latest version of the National Electrical Code ANSI/NFP A No. 70, in Canada, with the latest version of Canadian Electrical Code CSA C22.1, must conform to all local code authority having jurisdic tion. AN ELE ...
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A.O. Smith BTI-80 - page 9
9 TABLE 4 - GAS SUPPLY LINE SIZES (IN INCHES)* MAXIMUM CAPACITY OF PIPE IN CUBIC FEET PER HOUR LENGTH NORMAL IRON PIPE SIZES (INCHES) IN INPUT IN THOUSANDS BTU/HR FEET 1/2" 3/4" 1" 1 1/4" 1 1/2" 2" 2 1/2" 3" 4" 10 175 360 680 1400 2100 3960 6300 1 1000 23000 20 120 250 485 950 1460 2750 4360 7700 15800 3 ...
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A.O. Smith BTI-80 - page 10
10 4 . This appliance is equipped with a device which automatically lights the burner . DO NOT TR Y T O LIGHT THE BURNER BY HAND. 5. W ait five (5) minutes to clear out any gas. If you then smell gas, STOP! Follow "B" in the safety information above on this label. If you don't smell gas, go to next step. 6. Turn on all electrical pow ...
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A.O. Smith BTI-80 - page 11
11 SETTING THE W A TER HEA TER TEMPERA TURE A T 120°F (49°C) (APPROX. " " MARK ON F ACE OF THE TEMPERA TURE ADJUSTING DIAL) WILL REDUCE THE RISK OF SCALDS. Some states require settings at specific lower temperatures. T emperature Time to Produce 2nd & 3rd Setting Degree Burns on Adult Skin 180°F (82°C) Nearly instantaneous 170°F ...
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A.O. Smith BTI-80 - page 12
12 1. Provide complete combustion of gas. 2 . Cause rapid ignition and carryover of flame across entire burner . 3. Give reasonably quiet operation during ignition, burning and extinction. 4 . Cause no excessive lifting of flames from burner ports. If preceding burner characteristics are not evident, check for accumulation of lint or other foreign ...
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A.O. Smith BTI-80 - page 13
13 BLOWER MAINTENANCE For safety and satisfactory operation it is recommended that the blower be checked once a year by a competent service person. 1. MOTOR - The motor is factory oiled and sealed and requires no further maintenance. 2. WHEEL - Wheel must be clean of soot, ash or any other coating which inhibits either rotation or air flow . Remove ...
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A.O. Smith BTI-80 - page 14
14 T ANK CLEANOUT PROCEDURE The following practices will ensure longer life and enable the unit to operate at its designed efficiency: 1. Once a month the heater should be flushed. Open the drain valve and allow two gallons of water to drain from the heater . Inlet water valve should remain open to maintain pressure in tank. 2 . A cleanout opening ...
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A.O. Smith BTI-80 - page 15
15 8. When deliming has been completed, the heater should be flushed for 3 to 5 minutes with fresh water . • Remove the deliming equipment, install the drain valve, open the cold water inlet line and allow water to flow through heater and out drain valve. Don’t forget to plug vent and cap opening in Flo-Jug. 9. When flushing is completed: • F ...
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A.O. Smith BTI-80 - page 16
16 A hydrogen sulfide (rotten egg) odor may result if water contains high sulfate and/or minerals. Chlorinating the water supply should minimize the problem. (See EXTENDED NON-USE PERIODS). NOTE: Anode must remain installed (except for inspection) to avoid shortening tank life. See LIMITED W ARRANTY . Replace as necessary . SERVICE AND REP AIR The ...
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A.O. Smith BTI-80 - page 17
17 TROUBLESHOOTING For your safety , water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMA TION section first. W ARNING: DO NOT BY -P ASS ANY CONTROLS TO MAKE HEA TER OPERA TE. OPERA TE ONL Y AS WIRED FROM F ACTOR Y . NOT ENOUGH OR NO HOT W A TER YELLOW FLAME CONDENSA TION W A TER LEAKS LEA ...
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A.O. Smith BTI-80 - page 18
18 TROUBLESHOOTING Please check guidelines below . For your safety , water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMA TION section first. W ARNING: DO NOT BY -P ASS ANY CONTROLS T O MAKE HEA TER OPERA TE. OPERA TE ONL Y AS WIRED FROM F ACTORY . W A TER HEA TER CONTROL B C D E F B C D E ...
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A.O. Smith BTI-80 - page 19
19 Model BTI Limited W arranty 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 heater shall prove upon examination by the warrantor to have leaked due to natural corros ion from potable water therein, during the first THREE years af ...
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A.O. Smith BTI-80 - page 20
20 5621 W . 1 15TH STREET , ALSIP , IL 60803 PHONE: 1-800-433-2545 F AX: 1-800-433-2515 w w w .hotwater .com E-mail: p art s@hotwater .com REPLACEMENT P ARTS ...
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