Honeywell - ST9103A

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Contents

Honeywell ST9103A Electronic Fan Timer INSTALLATION INSTRUCTIONS APPLICATION The ST9103A Electronic Fan Timer integrates control of all burner and circulator fan operations in an oil furnace This control is the central wiring point for most of the electrical components in the furnace The basic purposes of the ST9103A are to monitor the thermostat for heat cool and fan demands and run the oil burner primary control and up to a two speed circulating fan as required The ST9103A also monitors a limit switch string which energizes the circulating fan whenever the limit switch opens Electronic air cleaner and humidifier convenience terminal connections may be provided as an option A means for operating continuous indoor air circulation is also available as a ...