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boiler control [aquastat] options today

I installed boilers (oil-fired) as summer job prior to 2000, never was involved on the electrical side of it though.
What today is available... i.e. what is the best controller out there?
I basically only know the word "aquastat" and it's a basic thermostat/relay running off a low voltage ac transformer for burner on >=140°F and off <=180°F.
Are their computer controllers now, with fancy computer displays, that i can control from my phone via wifi now and get maximum efficiency/fuel savings... ?

I'm interested in what's available for cast iron oil-fired boilers utilizing a separate indirect water heater ~45gal, having 2 zones hydronic heat with zone valves and a delta-t taco viridian circulator


    HVACNUT Member Posts: 4,943
    edited August 2019
    Hydrolevel, Honeywell, Beckett, to name a few offer digital aquastats that can be programmed for your needs, offer condensate protection, ODR, and other options. But no WiFi control and that's the way it should be.
    Add a Taco ZVC to handle the zone valves.