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aquastat

  1. HVAC
    Hello everyone, I'm new to this website, but I do almost everything "DIY" so I was hoping to get anyone's opinion on the follow scenario... I've switched my 1100sq' ranch over from a FHA furnace to all hydronic using a Buderus G115 (also oil fired). I have 4 main zones: 1-main living area...
  2. HVAC
    I have a Unico Series M air handler with a hydronic heating coil, 24V control circuit with Therm-O-Disc time-delay relay (no control board). When the thermostat Fan switch is turned from Auto to On, I see 24 volts move from the blue to the green terminal (measured from yellow as Common) and the...
  3. HVAC
    I'm having trouble lowering the temperature on my Honeywell L4103A 1019 Aquastat. I've gotten some help on other forums, including the plumbers forum on DIY, but someone there suggested I try here. I've found this documentation on the aquastat, but as you can see from the picture of mine, it's...
  4. HVAC
    This is my first post so please bear with me, I have read others post's and seen a lot of information missing so I will give as much as I can to see if someone knows the answer. I have a Carlin EZ-1 Burner and a Thermotron II Boiler my hot water runs through my heater as well and I believe I...
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