American Water Heater Commercial Ultra Low NOx Gas water Heater manuale d’uso

1 PRINTED IN U.S.A. 1212 P ART NO. 325370-000 MODELS BBCN375T754NV PLACE THESE INSTRUCTIONS ADJACENT TO HEA TER AND NOTIFY OWNER T O KEEP FOR FUTURE REFERENCE. COMMERCIAL UL TRA LOW NOx GAS W A TER HEA TER Glass-Lined T ank-type W ater Heater • INST ALLA TION • OPERA TION • SERVICE • MAINTENANCE • LIMITED W ARRANTY CAUTION TEXT PRINTED OR[...]

2 FOREWORD The design of model BBCN375T754NV complies with the current edition 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 hi[...]

3 GENERAL SAFETY INFORMA TION PRECAUTIONS DO NOT USE THIS W A TER HEA TER IF ANY P ART HAS BEEN UNDER W A TER. Immediately call a qualied 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 T O THE FOLLOWING, DO NOT OPERA TE HEA TER UNTI[...]

4 INSULA TION BLANKETS Insul ation bl ankets available t o the gene ral publi c for exte rnal use on gas wa ter heater s are not requ ired for us e on your water he ater . The p urpos e of an insulat ion blan k et is to re duce th e standby hea t los s encou ntered wit h storage t ank water heate rs. Y our water heate r meets or exce eds the c urre[...]

5 installed in a carpeted alcove or closet, the entire oor shall be covered by the panel. Also, see the drain requirements. THI S HE A T ER SHA LL BE LOCA TE D OR PROTECTED SO IT IS NOT SU BJECT TO PHYSIC AL DAM AGE BY A MOVIN G VEHIC LE. WA RN IN G FLAMMABLE ITEMS , PRESS URIZED C ONT A INERS O R ANY OTHER P O T ENTIA L FIRE H A ZA RDO US ARTI [...]

6 CAUTION: IF BUILDING COLD W A TER SUPPL Y HAS A BACK-FLOW PREVENTER, CHECK V AL VE OR WA TER METER WITH CHECK V AL VE, PROVISIONS FOR THERMAL EXP ANSION OF W A TER IN THE HOT W A 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 WA TER L[...]

7 THERMOMETERS (Not Supplied) The rmom eters sho uld be obt ained an d fie ld insta lled as sho wn 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 . A ll pipin g comp onent s conne cted to th is unit fo r space h[...]

8 FIGURE 4. WIRING DIAGRAM AND SCHEMA TIC HEA TER WIRING All electrical work must be installed in the United States in accordance with the current edition of the National Electrical Code ANSI/NFP A No. 70, in Canada, with the current edition of Canadian Electrical Code CSA C22.1, must conform to all local code authority having jurisdiction. AN ELEC[...]

9 T ABLE 4. GAS SUPPL Y LINE SIZES (IN INCHES)* MAXIMUM CAP ACITY OF PIPE IN CUBIC FEET PER HOUR BEFORE PLACING THE HEATER IN OPERATION, CHECK FOR GAS LEAKAGE. Use soap and water solution or other material acceptable for the purpose in locating the leaks. DO NOT USE MA TCHES, CANDLES, FLAME OR OTHER SOURCES OF IGNITION FOR THIS PURPOSE. FIGURE 5. G[...]

10 5. W ait ve (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. T urn on all electrical power to the appliance. 7. Set thermostat to desired setting by rst pressing the COOLER and HOTTER buttons together and holdi[...]

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 or Provinces require settings at specic lower temperatures. Figure 6 shows the approximate water temperatures produced at various thermostat settings. Short repeated h[...]

12 1. Provide complete combustion of gas. 2. Cause rapid ignition and carryover of ame across entire burner. 3. Give reasonably quiet operation during ignition, burning and extinction. 4. Cause no excessive lifting of ames from burner ports. If preceding burner characteristics are not evident, check for accumulation of lint or other foreign m[...]

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 ow . Remov[...]

14 T ANK CLEANOUT PROCEDURE The following practices will ensure longer life and enable the unit to operate at its designed efciency: 1. Once a month the heater should be ushed. 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[...]

15 cold water inlet line and allow water to ow through heater and out drain valve. Don’t forget to plug vent and cap opening in Flo-Jug. 9. When ushing is completed: • Fill heater being certain to expel air from tank through a nearby hot water faucet or , if removed, the relief valve opening. • The heater relief valve can be washed in U[...]

16 NOT E: Ano de must remai n install ed ( exce pt for inspe ctio n ) to avoid sh or tening ta nk life. See LI MITED WAR R ANT Y . Re place as necessary . SERVICE AND REP AIR The wate r heater req uires no sp ecial c are oth er than th e norma l mainte nance as n oted above. If you are h a vin g a proble m with your water he ater , befo re call ing[...]

17 TROUBLESHOOTING For your safety , water heater service should be performed only by a qualied service technician. Read the GENERAL SAFETY INFORMA TION section rst . PROBLEM POSSILBE MALFUNCTION SER VICE T O BE PERFORMED NOT ENOUGH OR NO HOT W A TER 1) Blower will not run. A) "ON/OFF" control switch turned off. Turn switch to the o[...]

18 TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Please check guidelines below . For your safety , water heater service should be performed only by a qualied service technician. Read the GENERAL SAFETY INFORMA TION section rst. INTELLI-VENT TROUBLESHOOTING CHART - USER CONTROL PROBLEM SOLUTION Inadequate or no earth ground 1. Ensure the wall ou[...]

19 TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Please check guidelines below . For your safety , water heater service should be performed only by a qualied service technician. Read the GENERAL SAFETY INFORMA TION section rst. INTELLI-VENT TROUBLESHOOTING CHART - USER CONTROL PROBLE MS OLUTION Ignition/flame failure. 6 The water heater has re[...]

20 TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Please check guidelines below . For your safety , water heater service should be performed only by a qualied service technician. Read the GENERAL SAFETY INFORMA TION section rst. INTELLI-VENT TROUBLESHOOTING CHART - USER CONTROL PROBLE MS OLUTION 15 # LED ST AT US B C D E F 1. Turn off power to t[...]

21 NOTES[...]

22 NOTES[...]

23 Limited W arranty American W ater Heater Company , 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 corrosion from potable wa- ter therein, during the rst THREE years a[...]

24 P .O. Box 1597, Johnson City , TN 37605 Phone: 800-456-9805 • Fax: 800-999-5210 www .americanwaterheater .com Copyright © 2012 American Water Heater Company . All rights reserved. ww w. a mericanwaterheate r. co m American Wa ter Heater Johnson Cit y, TN 37605[...]