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Old 02-18-2013, 02:13 AM   #1
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Default PID controlled 3-Way valve Wiring Help

Hello all,
I am going to use this: valve for a HERMS bypass loop and plan on controlling it with an Auber SYL-1512A PID in on-off mode. The idea is that by incorporating a bypass loop I can contol the HLT temperature separate from the mash temperature. Anyhow, I have a 24V transformer for my gas valve, so would I be better off stepping down to 12VDC from that or just get a separate 120VAC to 12VDC transformer? I am leaning toward the later, but what I am confused about is if I will need some kind of relay? My wiring knowledge is basic, so any diagrams would be great! I also plan on using an RTD sensor at the outlet of the HERMS coil. Any help would be appreciated.

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Old 02-18-2013, 03:53 AM   #2
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The PID can drive a solenoid valve directly but you will need a 12 VDC power source. Easiest is to have separate power supply for that, although stepping down from 24 VDC to 12 VDC is also very straightforward.
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