A.O. Smith BTH 120-250(A) Installation & Operating Instructions Manual

20, 20 WARNING UNDER NO CIRCUMSTANCES SHOULD THE INPUT EXCEED THE RATE SHOWN ON THE HEATER RATING PLATE. OVERFIRING COULD RESULT IN DAMAGE OR SOOTING OF THE HEATER. CATHODIC PROTECTION CAUTION HYDROGEN GAS CAN BE PRODUCED IN A HOT WATER SYSTEM SERVED BY THIS HEATER THAT HAS NOT BEEN USED …

6, 6 less than 100 square inches (645 cm²). If the confined space is within a building of tight construction, air for combustion and ventilation must be obtained from outdoors. When directly communicating with the outdoors through vertical ducts, two permanent openings, located in the above manner,…

18, 18 ADJUSTMENT PROCEDURE INITIAL START-UP A minimum gas supply pressure of 5.0" (1.25 kPa) W.C. (4.5" or 1.12 kPa) on BTH 150 and 199) for natural gas (11.0" or 2.74 kPa W.C. for L.P. Gas) is required before making any adjustment to the gas control pressure regulator Attempts to adj…

1, A.O. Smith BTH 120-250(A) 1 A DIVISION OF A.O. SMITH CORPORATION Mc BEE, SOUTH CAROLINA PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE. PRINTED IN U.S.A. 1104 PART NO. 196145-001 CYCLONE XHE ® Model BTH 120-250(A) SERIES 970 AND 973 COMMERCIAL GAS WATER HEATER GAS-FIRED POWE…

31, 31 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 corr…

5, 5 • Do not cover the temperature & pressure relief valve. • Do not cover the instruction manual. Keep it on the side of the water heater or nearby for future reference. • Do obtain new labels from A.O. Smith for placement on the blanket directly over the existing labels. LOCATING THE HE…