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Wiring zone valve in Crown Boiler AWR series

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videoshim
videoshim Member Posts: 3
in Gas Heating
Hello everyone. I purchased a new gas boiler(Crown AWR series) and replaced my old one recently. I am very happy with its efficiency. However, I need help finding a solution to wiring it to my old zone valve. I only have one circulator and 3 zone valves which are Honeywell v8043s. Now I open all zones manually and use one thermostat temporarily. But I want to wire it to 3 zone valves and three thermostats. Thank you.

Seong

Comments

  • Ironman
    Ironman Member Posts: 7,807
    Get a Taco ZVC4 zone control panel and follow the wiring instructions.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
    Alan (California Radiant) Forbesmattmia2
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 11,453
    The instructions that come with the Honeywell zone valves (also available on line) is easy to follow, OR you could get a Zone Valve control panel like the Taco ZVC-403 (or ZVC-404 if you plan to add a zone in the future) to make for easy trouble shooting in the future.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    TNewm22mattmia2
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 11,453
    edited December 2022
    This is the diagram to use a Zone Control



    This is the diagram to wire without the zone control


    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    TNewm22
  • TNewm22
    TNewm22 Member Posts: 4

    @EdTheHeaterMan for the diagram you provided above, is the System Circulator wired into the Crown AWR Honeywell Control Board in lieu of the ZVC?

    That is how I wired my new Crown AWR Boiler and often times the pump will run for 2 to 3 seconds as the Zone Valve is closing, causing a loud “whoosh” noise to occur. I’m wondering if it’s safer to move the System Circulator 120V Wiring to the ZVC panel?

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 11,453

    YES. to get rid of the woosh, this wiring diagram will do that for you in most cases.

    Screenshot 2025-11-12 at 7.59.48 PM.png

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    TNewm22
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 11,453

    @TNewm22 Connecting the circulator to the ZVC will stop the circulator at the same time as the zone valve call for heat is finished. With the circulator wired to the ARW boiler control there will be a one to three second delay on the circulator shutting off due to the zone valve end switch and the electronics in the ARW microprocessor control. this could cause the Woosh. However, if there is a second zone operating when the zone that is experiencing the Woosh thermostat is satisfied, you may still get that noise.

    The only way to see if that will solve the problem is to try it.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    TNewm22
  • hot_rod
    hot_rod Member Posts: 26,254

    This boiler ? Did it come with a circulator ?

    What brand and model?

    IMG_1405.jpeg
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • TNewm22
    TNewm22 Member Posts: 4
    https://forum.heatinghelp.com/discussion/comment/1872104#Comment_1872104

    thank you Ed, I’ll give it a try!!

  • TNewm22
    TNewm22 Member Posts: 4
    https://forum.heatinghelp.com/discussion/comment/1872109#Comment_1872109

    yes, correct. Crown Aruba AWR 105BL Propane Gas with a Taco 007e ECM circulator.

    I have the Pump on the supply side (pump away from expansion tank) and three (3) taco sentry 3/4” zone valves wired into the new Taco ZVC 403-5

  • hot_rod
    hot_rod Member Posts: 26,254

    I think over the course of a week or so that pump “learns “ you systems hydraulics and adjusts based on zone valves opening and closing. That should minimize the noise through the zone valves

    IMG_1270.jpeg

    That particular ZV closes quickly, that adds to whoosh potential. I’ve heard they increased the close off time a bit in newer models.

    It is a ball valve type ZV. A ball stops flow by shearing it off so to speak, so there is a bit of noise to that type of closure.

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    HVACNUTAlan (California Radiant) Forbes
  • TNewm22
    TNewm22 Member Posts: 4
    https://forum.heatinghelp.com/discussion/comment/1872130#Comment_1872130

    I’ve been reading now that the Taco Sentry can be noisy. I removed older style 571s for the simplicity of the ball valve design, just didn’t anticipate the increase in noise!

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