A.O. Smith Four Heaters with or without IID System Technical Documents

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Revised October 1995 (Reviewed June 2000) © A. O. Smith Corp. 1995 Printed in the U.S.A. E 124.1

TYPICAL WIRING DIAGRAM FOR

FOUR BOILER LINEAR-TEMP*

INSTALLATION

HW-300 THRU 670

TYPICAL WIRING DIAGRAM FOR A

FOUR BOILER

LINEAR-TEMP

INSTALLATION WITH OUTDOOR

RESET CONTROLLING. PRIMARY

CIRCULATOR CONTROLLED BY

OTHER MEANS.

A.O. SMITH ELECTRONIC

SEQUENCING PANEL CAN BE

APPLIED TO SEQUENCE 4, 6 OR 8

BOILERS WITH OUTDOOR RESET.

*TRADEMARK, A.O. SMITH CORP.