Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit

Wiring tstat with boiler

Paul_67 Member Posts: 3
I have a split level home with hot water heat set up for three zones (basement, living, upper) and the person before me appears to have all three thermostats wired together. This of course means that the bedrooms get warm and the living and basement are sometimes 5 degrees cooler. Really sucks when so cold out as it is right now. Do you have any wiring diagrams on what to do for a setup like I have. Right now all 3 thermostats splice together, go into boxes to control the pumps, then go to boxes and one wire comes out and goes to the boiler to turn on. I would like to have the three zones back again. Help!


  • brucewo1b
    brucewo1b Member Posts: 638
    Paul the easiest thing to do

    is get a Taco SR503EXP Circulator control, diagram in the box and on the cover, straightens out the multibox mess and wires.

  • carol_3
    carol_3 Member Posts: 397

    I second the suggestion. This box will make it so easy.
  • Paul_67
    Paul_67 Member Posts: 3

    Thanks. It does look like that is the way to go. Now I just have to wait until it is not 10 degrees below zero to do it.

    Thanks again.
This discussion has been closed.