A.O. Smith 1500 Operation & User’s Manual

1, 1 WARNING: If the information in this manual is not followed exactly, a re or explosion may result causing property damage, personal injury or loss of life. — Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other applian…

18, 18 The software revision level of the MCB. • Current Error Screen: Displays the last error that the system has detected plus a time stamp of when the error occurred. (The time stamp is based on the elapsed hours value at the time the error occurred. It is displayed in ho…

4, 4 GENERAL SAFETY Breathing Hazard - Carbon Monoxide Gas Special consideration must be taken with installation above 4500 feet. Please contact an A. O. Smith qualified service agent to obtain the proper setup and instructions before lighting. Failure to implement the proper setup w…

24, A.O. Smith 1500 24 500 Tennessee Waltz Parkway, Ashland City, TN 37015 Technical Support: 800-527-1953 • Parts: 800-433-2545 • Fax: 800-644-9306 www.hotwater.com …

7, 7 FIGURE 1 - SCHEMATIC DIAGRAM HOT 120VAC ON/OFF SWITCH 20 AMPFUSE (PDB – F2) PUMP RELAYCONTACTS CIRCULATINGPUMP (VW UNITSONLY) NEUTRAL 120VAC RTN 10 AMPFUSE (PDB – F6) K8 (MCB-II) PUMP RELAYCOIL R IGNITER K11 (MCB-II) GAS VALVE K5 (MCB-II)K4 (MCB-II)K6 (MCB-II) 15 AMPFUSE (PDB �…

23, 23 LIMITED WARRANTY A. O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this boiler: 1. If within TEN years after initial installation of the boiler, a heat exchanger or gas burner should prove upon examination by the warrantor to be def…