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A.O. Smith One Heater with or without IID System Technical Documents

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Revised April 1995 (Reviewed June 1999) © A. O. Smith Corp. 1995 Printed in the U.S.A.
E 121.0
TYPICAL WIRING DIAGRAM FOR SINGLE
BOILER
LINEAR-TEMP* INSTALLATION
HW-300 THRU HW-670
DB-720 THRU DB-1810
WITH PROVEN PILOT IGNITION SYSTEM
*Trademark of A. O. Smith Corp.
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