zone valve

  1. Pippen S.

    "New" 111 year old house with boiler control issues..

    Hi All! I've gotten a crash course over the last 2 months of owning an old Victorian style home in Rhode Island, seems like everything is going wrong with this heating system. So a quick description of the heating system: there are a total of 6 zones coming off of a Slant Fin S-120 DP. 4...
  2. CheesecakeLover

    Anything special about zone valve transformers? Can I use a general purpose transformer?

    Hi all, I currently have a single 24 V transformer powering 2 Taco zone valves. The transformer is marked as "40 VA", which means it has a current rating of 1.66 Amperes. The problem is that I believe my Tacos have the older 0.9 A power heads; not the modern 0.3 A heads. If that's true, that...
  3. modernhistorian

    Help requested to find Honeywell powerhead or substitute

    I own a condo in a commercial building that uses chilled or heated water (depending on season) in the HVAC. The controlling valves in my two systems are Honeywell: 120 VAC, two position zone valves with aquastats, and both have failed. I was able to locate one powerhead,part number 40003916-045...
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