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Viessmann Dekamatik-HK1 replacement options

DekamatikHK1 Member, Email Confirmation Posts: 1
I am a homeowner with two Viessmann Dekamatik-HK1 controls (4-way mixing valves), Burnham V-7 series (oil) boiler, Beckett AFG burner, and 5 zones of baseboard and one radiant floor loop. I think the Dekamatik's may need replacing in the near future as they are closing in on 20 years old. What would be a current/updated control solution to replace the Dekamatik-HK1?