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Honeywell zone valve not triggering circulatorV8043

Jeph
Jeph Member Posts: 7
in Oil Heating
Is there anyway this end switch ever actually turned on the circulator pump????(see photos)  Lived here 2 years. Never touched this.  Noticing now no heat in this zone unless another zone has triggered the circulator pump. We believed we had working heat in this room. Highest point of the house and my partner comes from Alaska…

Comments

  • HomerJSmith
    HomerJSmith Member Posts: 2,582
    The zone valve doesn't turn on the circulator. The end switch in the zone valve turn on the aquastat relay or the circulator relay control panel depending on your setup. The thermostat turns on the zone valve motor which causes the end switch in the ZV to cause a relay to close in the aquastat or pump control panel which turns on the circulator.
  • Jeph
    Jeph Member Posts: 7
    Correct.  But shouldn’t the wires off the end zone switch not be capped together?  One to a hot and one to a cold?  Shouldn’t it complete a circuit?
  • Jamie Hall
    Jamie Hall Member Posts: 24,390
    I don't know what the green wire with the gaps in the insulation is. I don't want to know. But if I were faced with that I would take all the wiring apart, review what was supposed to go where, and start all over again.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    Intplm.
  • Jeph
    Jeph Member Posts: 7
    yes. Its all coming out. But the argument i am having with the doubter here…is we have had heat in that zone and i am saying no possible way. 
  • neilc
    neilc Member Posts: 2,775
    all of one side of the end switches gets tied together back to a common request for pump or fire
    known to beat dead horses
    Jeph
  • neilc
    neilc Member Posts: 2,775
    maybe that one end switch is bad, or just not being made,
    reach in there and push the little button
    known to beat dead horses
  • Jeph
    Jeph Member Posts: 7
    Yeah pushed the button a bunch of times. I already rewired the switch splitting up the end switch wires that were wire capped together with the common wire and it is working.  Just getting push back not believing that this zone never worked correctly.  Whoever installed this did it wrong and i wasted a lot of time figuring it out. Just trying to confirm that there was no way running both wires from the end switch to the same side could have worked. 
  • neilc
    neilc Member Posts: 2,775
    so it's fixed (?)
    enjoy the new year
    known to beat dead horses
  • Jeph
    Jeph Member Posts: 7
    It is fixed.  I am just getting push back that it ever worked before or not. And i say both end switch wires touching no way. She says we would have noticed it before. 
  • neilc
    neilc Member Posts: 2,775
    not sure we can help you with she
    known to beat dead horses
  • Jeph
    Jeph Member Posts: 7
    In spite of all my efforts explaining electricity and circuits i have conceded that she is right and i must messed it up when i put the new thermostat in three months ago….
  • Dave Carpentier
    Dave Carpentier Member Posts: 620
    Typically, each thermostat opens its matching zone valve which allows flow. Its the end-switches in the zone valves (red wires) that relay out to cause circulation in those open zones.
    So, as long as any working end switch is causing the circulator to flow, all open valves will flow heat.
    You would still get heat with the red wires disconnected or miswired, just not 'on demand'.

    I have the end switches on 2 of my 7 zones disconnected. They open via their respective thermostats, but will only get flow when some other zone opens and it's end switch causes the circ to run.
    30+ yrs in telecom outside plant.
    Currently in building maintenance.
  • Jeph
    Jeph Member Posts: 7
    Why do you have two not connected?Dave Carpentier said:
    Typically, each thermostat opens its matching zone valve which allows flow. Its the end-switches in the zone valves (red wires) that relay out to cause circulation in those open zones. So, as long as any working end switch is causing the circulator to flow, all open valves will flow heat. You would still get heat with the red wires disconnected or miswired, just not 'on demand'. I have the end switches on 2 of my 7 zones disconnected. They open via their respective thermostats, but will only get flow when some other zone opens and it's end switch causes the circ to run.
    Dave Carpentier said:
    Typically, each thermostat opens its matching zone valve which allows flow. Its the end-switches in the zone valves (red wires) that relay out to cause circulation in those open zones. So, as long as any working end switch is causing the circulator to flow, all open valves will flow heat. You would still get heat with the red wires disconnected or miswired, just not 'on demand'. I have the end switches on 2 of my 7 zones disconnected. They open via their respective thermostats, but will only get flow when some other zone opens and it's end switch causes the circ to run.

  • Dave Carpentier
    Dave Carpentier Member Posts: 620
    edited January 2023
    I disconnected the end switches of my 2 smallest zones to create a larger "smallest load".
    Its working well so far (new experiment for this year).
    30+ yrs in telecom outside plant.
    Currently in building maintenance.

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