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24V to visionPRO for constant backlight

I'm considering running yet another fresh run of wire to my t-stat so I can have the constant backlight feature.  My understanding is all it wants is 24V AC which I expect I can pull from the transformer that came with my WM EG-45 boiler by replacing my two wire run with a 3 wire run.  I have a spool of 18AWG X4 handy so I might just use that.







My concern is that maybe this actually needs filtered DC and I missed a detail? 
Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment

Comments

  • ChasMan
    ChasMan Member Posts: 459
    Nope

    Just 24 VAC for vision pro. I have a prestige that is lit up 24 x 7 running off my air handler xformer which is rusty and humms.
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