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Vs8187a valve replacement

Pete67
Pete67 Member Posts: 1
in Gas Heating
I have an old International Heater furnace originally wired with a B60 valve. That valve was replaced with a vs8187a. It's not easy to see in the pictures, but the high limit switch is wired into the 2 middle terminals. I've seen circuits with a jumper there, but not a limit switch. The terminal block itself is loose and I'm pretty sure there is a broken connection underneath. 

The recommended replacement valves I've seem all seem to have 3 terminals. It's clear where to connect the powerpile and thermostat but where should the high limit switch go? Perhaps in series with the powerpile?

Comments

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,477
    High limit would go in series with thermostat. Power pile goes directly to the valve.
    Pete67
  • tim smith
    tim smith Member Posts: 2,807
    why do you think you need a new valve?? 95% of the time its m/v loss through connections, limit circuit, thermostat circuit. Usually not valve. Also if we were replacing it we would install a 100% shutoff, ie, move pilot line from where it is tied in to gas line before valve and tie into pilot tap on new valve. Then gives 100% shut off. Go through with a small piece of 150 grit sand paper, clean every terminal, connector, screw (surface that touches wire). Unless the valve was leaking gas through when it should not. Good chance you will not be replacing valve.
    Tim

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