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taco esp zone valves

ScottMP
ScottMP Member Posts: 5,883
in THE MAIN WALL
and I am surprised at the noise level ?

Scott

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Comments

  • sven_2
    sven_2 Member Posts: 5
    taco esp zone vavle

    anyone else having problem with these valves.i have two on a system . one works fine all the time the other one i've hAd to change the head twice already and will have to again. it is working fine when you turn the tstat up and down ,but when you let the tstat sit over night it will not come back on..... there is 28volts there when i goout to check it but it still won't come on.... so i ran new tstat wire changed tstat, transformer and two heads already.. i've call taco and they said they aren't having any problems with them,,,,,, please if anyone has any ideas please help
  • Josh_10
    Josh_10 Member Posts: 787


    We have over 200 installed now. Initially I thought it was the greatest thing since sliced bread but we are not having about a 5% failure rate. It hurts!!
  • Derheatmeister
    Derheatmeister Member Posts: 1,579


    I worked on some a couple years ago when they were new. I do not like them very much since we had a bad batch of them(About 25 bad ones)....I think they corrected the Problems since..

    Maybe your 28V is "Spiking" to higher Voltage? and Causing Problems? Check/Monitor you incoming Voltage!or install a surge protector.
  • Joe Mattiello
    Joe Mattiello Member Posts: 718


    Apparently, the voltage is too high causing havoc with the valve actuator electronic board. The valve is designed to operate at approximately 24 volts, and 28 volts is much higher then normal. Perhaps you’re located close to the electric company step-down transformer located on the telephone pole? Anyway, Taco has engineered a more robust actuator to work under extreme conditions. Please call me direct if you have any questions or concerns.

    Joe Mattiello
    Technical Support Engineer
    Tel. 401-942-8000 X 484
    Fax. 401-942-2360
    1160 Cranston St
    Cranston, RI 02920
    joemat@taco-hvac.com
    Joe Mattiello
    N. E. Regional Manger, Commercial Products
    Taco Comfort Solutions
  • bert
    bert Member Posts: 50
    esp valves

    Back in 02, they had a list of power stealing stats that could give intermittent problems. Enough trickle voltage would falsely energize the head and it would not open when a real call for heat came. Solution then was to install a resistor across R & W of those stats, and I believe it came with the ESP valves. Some Honeywell stats also required a second resistor as well. Same issue has been showing up just recently with some of their zoning circ's and certian stats as well, like the T87N.
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