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

Wiring diagram of a circulator and aquastat

aldaci
aldaci Member Posts: 3
edited July 2021 in THE MAIN WALL
I am trying to put together an indirect storage tank. Not sure how to wire the circulator and the aquastat. The indirect tank is connected to a Weil Mclain oil fired steam boiler. Any help out there on wiring?

Comments

  • aldaci
    aldaci Member Posts: 3
    edited July 2021
    I need some  help with the wiring of an aquastat and cicrculator for an indirect storage tank. Anybody our there can help? Thank you
  • mattmia2
    mattmia2 Member Posts: 10,919
    Need more information? what kind of boiler? how is it piped? most mod con boilers and some conventional boilers have the controls built in.
  • aldaci
    aldaci Member Posts: 3
    It is a steam oil fired boiler. 
  • aldaci
    aldaci Member Posts: 3
    Weil mclean

  • Ctoilman
    Ctoilman Member Posts: 105
    too generic of question....where do u get hot water now, tankless off boiler?
  • Erin Holohan Haskell
    Erin Holohan Haskell Member, Moderator, Administrator Posts: 2,354
    This was a double post, so we've merged the discussions into one here. Thanks!

    President
    HeatingHelp.com

    mattmia2
  • HomerJSmith
    HomerJSmith Member Posts: 2,635
    edited July 2021
    You have a steam boiler with a tankless built in water heater and you want to pipe the tankless heater in the boiler to the storage tank? Is it an indirect with a heat exchanger in it or just a storage tank to give you more capacity? I kinda don't quite know what your intentions are.

    To use a circulator to move water and have it governed by an aquastat, you will need a 24 V transformer, a relay and a 110 volt connection to the transformer and relay. I will give you a verbal explanation.

    You need 110 V connection to the primary side of the transformer. The secondary 24 V, one lead is connected to the aquastat terminal and from the aquastat's other terminal a lead goes to the coil terminal or wire on the relay and a lead goes from the other coil terminal or wire to the other lead on the transformer. That's the low voltage circuit. When the points in the aquastat close power will go to the relay coil, closing the points that carry 110 V to the circulator.

    The circulator--You need 110 V to the circulator. One lead from the 110 V, usually the black wire is connected to the point in a SPST relay and a lead from the other point on the relay goes to the pump wire. The other lead from the 110 V usually the white wire is connected to the other lead in the pump.

    When the relay points close, 110 V goes from the voltage source thru the points in the relay to the pump. That the high voltage circuit.

    Be sure and have a ground wire from the the 110 V grounding to the pump. That's the grounding circuit.

    You could use a simple Fan Center that has a transformer and relay on it.



    https://www.supplyhouse.com/White-Rodgers-90-113-Fan-Control-Center-120-VAC-Primary-24-VAC-Secondary-SPDT-Relay


  • mattmia2
    mattmia2 Member Posts: 10,919
    Isn't there a combination control with the aquastat, circulator relay, and control transformer all in one control that is commonly used for hot water boilers but will work for this as well?
  • HomerJSmith
    HomerJSmith Member Posts: 2,635
    What you want is a line voltage aquastat? Having the aquastat turning on or off the circulator? You can try the following:

    https://media.statesupply.com/filemanager/0/2/02022015-honeywell_l4006_7_8-l6006_7_8-aquastat-relays_installation.pdf

Categories