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duel furnace control

I'm thinking of replacing a Williamson Oilsaver 224,000 B.T.U. output with 2-125,000 Thermopride low boys. The unit now has 2-5 ton coils side by side. I'm looking for a control that will alternate furnaces on call for heat so its not just one unit running until the outside "T" calls for both to run.  ( I know they have a control for boiler's. )


  • will smith_4
    will smith_4 Member Posts: 259
    Lead lag control

    How about using a Honeywell T775? You could use it for lead lag, and set up an outdoor air sensor for reset control.
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