Trying to find a simple, cost effective plan for each glycol solenoid valve and temp controller on my tanks, and the way they talk to each other, and how they are powered. I know there are a lot of posts here about that, but I'm trying to nail down exactly which parts, and how they interface. Seems like a Johnson controls A419 or the (A421ABC-02C as they now call it), plugged in to 120AC, using a 120AC SS solenoid wired to the controller for power and activation signal (or will solenoid have independent power?) and the supplied Johnson sensor stuck into the tank thermowell with a dab of thermal paste on the end. Am I on the right track? Does the Johnson only work with 120V solenoids, or will it also work with 24VDC solenoids powered from a transformer?
Thanks!
Thanks!
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