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PC600 Post Purge Timer Plug-In Card

The solid-state Taco Post Purge Plug-In Card maintains power to the circulator once the priority zone is satisfied, but does not fire the boiler. The circulator purges excess heat into the priority zone, minimizing stand-by loss during warm weather months and optimizing boiler operation when used with a boiler reset control. Power can be maintained to the circulator from 20 seconds to 7 minutes using an adjustable potentiometer. Using the extra set of dry contacts provided on the card to emulate aquastat closure, you can use the Taco PC600 with boilers that have an integrated reset control.