circulater wiring

archibald tuttle

If you wanted to accomplish this, you would need an extra relay so that the steam calling themostat could call a relay that would start the boiler and pull an independent end switch (usually the xx terminals on a lot of relays or I think numbers 5 and 6 on a Taco 501 that are marked Common and NO) in parallel with the thermostat for the baseboard. Then the circulator would run either whenever there was a call for steam or when there was no call for steam but temperature was still not made in the baseboard area thermostat.

I'm going to presuppose that your mind works like mine, which is to say that my suspicion is - especially once the boiler is steaming -- I'm using more fuel than I need to keep steam up and I might as well take some extra heat off the boiler and bank it by pumpimg it to my hydronic zone and then that zone will be less likely to make an independent call for heat and run the boiler for additional time.

I haven't done it yet, so this is the pot call the kettle black, but I have several systems where this is a problem and not all of them have hydronic loops, and I think that possibly the better way to go is to get a vaporstat and get better control over pressure in the system instead of coming up with a way to siphon away what seems like excess heat because the boiler never makes the standard pressure control and just runs constantly until the steam thermostat is satisfied.

I have babysat residential steam boilers avocationally and vocationally for 30 years and I had never seen one trip the standard pressure control, even set at its lowest setting (unless the system fill had been left on and it was tripped by water pressure from a system full of water. Then just to make a liar out of me, I happened to catch an old gas conversion boiler doing it the other day. Guess I finally got a system tight enough to hold a little pressure. But this is the exception that proves the rule. To cut boiler run time and send the heat where it is currently being called for (that might be a bit of an overstatement, two thermostats in how big a house and both on the 1st floor) I think a vaporstat is the way to go so now I'm asking for the names and numbers. MAnufacturers, most affordable suppliers of vaporstats anyone????.

Gary_23

circulater wiring

Was wondering if someone could help me on wiring of a circulater. I have a IN6 burnham boiler. Its heats up the old part of house with steam. We added a extension and ran baseboard heating. We piped it the way Dan layed it out in his book.The new space works off its own themerstat. When the room calls for heat it turns the boiler on and circulater on. Then the boier is turn on and off with agastat so not to make steam. I have another thermastat for the steam part, both thermastats are on the same 1st floor. But in different parts of house. I would like to have the circulater go on when the boiler calls for steam.Can i wire both thermastats to the arco switching relay. Its a DPST model AR821. Right now their is only the thermastat wires from the new room on it. can i piggy back off those two wires with the two wires from the other thermastat in the old part of house. Or can i some how make circulater run contiueously ,or will it burn its self out. Thanks. Sorry for the long explanation,just tring to be exact on my pexplanation.

Big Ed_3

Sounds like a Correct setup Now

Why would you want to supply heat to the room only when there is a call for steam ? If this is a apartment you are best served with a remote thermostat and room sensor .