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Taco 3 wire zone valves

Leah_smith
Leah_smith Member Posts: 1
in Gas Heating
I want to know what the lever does on an older style, 3 wire Taco zone valve. I've seen boilers where all the valves are in the open position 24/7 no call for heat, and other boilers where they all appear to be closed 24/7, yet there is scalding water going through the pipes. Is the lever supposed to move up and down? What is the point? I never see it move and it doesn't seem to make a difference. I know how they work and how to test them. 

Comments

  • SteveSan
    SteveSan Member Posts: 263
    They lever should always be in the up position. It is only there as a manual switch that will allow you to open the valve incase there is an issue with the valve. By pushing the level down it will open the valve to allow water to flow to the zone.

    If you have any questions, please give Taco Technical Services a call during normal business hours Mon-Fri 8am-5pm EST 401-942-8000

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