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Tekmar 279, where to locate indoor temperature sensors?

rhodebump
rhodebump Member Posts: 149
edited November 2022 in Thermostats and Controls
I just installed a Tekmar 279 but I am unsure where to install the indoor temperature sensor. Do I install it in the coldest room? Hottest room? The room which is most consistent?

The building is out of balance (always has been). Some rooms are 60 degrees, and others are 80 degrees. It's a two-pipe system.


Thank you for your time.

Comments

  • neilc
    neilc Member Posts: 2,084
    you need to back up and work out the balance problem,
    where ever you put that sensor, somewhere else will be unhappy,
    or put it in a location that is middle of the road, comfort wise,

    but you need to fix the balance,
    traps are failed and leaking by, and shutting off others(?),
    or failed closed and not passing air(?),
    main vents are failed and mains not venting?
    boiler is running away on pressure and vents are wrecked or jambed shut(?),

    let's start at the boiler,
    pressure?
    Ptrol is set to ?
    pigtail is serviced?
    water is clean or dirty in the sightglass?
    water line is stable or bouncy when boiling?
    pictures?
    known to beat dead horses
  • Jamie Hall
    Jamie Hall Member Posts: 20,416
    There is nowhere you can put sensors which will solve your balance problem. @neilc has some suggestions as to where to start.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • rhodebump
    rhodebump Member Posts: 149
    Thanks for the ideas.

    I have attached pictures of pressure settings of the boiler, below

    Water is clean in sight glass
    Water is stable, not bouncy when boiling.

    Water level looks pretty good (not high or low in sight glass) when boiling.

    I have tons of venting that I have added.
    I have replaced 30+ steam traps.





    Boiler controls:





  • Jamie Hall
    Jamie Hall Member Posts: 20,416
    Two pipe system? Then you can -- and should -- even out your balance by partly closing the valves on the radiators which give too much heat. That's one of the advantages of two pipe -- and it's what those valves are for.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • neilc
    neilc Member Posts: 2,084
    TRVs?
    known to beat dead horses
  • rhodebump
    rhodebump Member Posts: 149
    Yes, I have put in some TRV's too. Incidentally, I put them on the ground floor where there is a daycare. They still turn on air conditioning in the winter (yes, I pay all the utilities) Sort of comical.

    I am definitely ready to start closing some valves now to balance out the system.