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Honeywell R8335A Replacement

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brownbag
brownbag Member Posts: 3
in Thermostats and Controls
Does anyone have a recommendation to replace a Honewell R8335A multizone hydronic relay panel. I have three zones, each with a circulator pump and Honeywell zone valve. Thanks

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  • Steamhead
    Steamhead Member Posts: 16,835
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    A zone valve and a circulator on each zone? For a total of three zone valves and three circulators?
    All Steamed Up, Inc.
    Towson, MD, USA
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  • brownbag
    brownbag Member Posts: 3
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    Yes, three circulator pumps and three Honeywell zone valves.
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,506
    edited June 2016
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    Steamhead said:

    A zone valve and a circulator on each zone? For a total of three zone valves and three circulators?

    Flow checks...the hard way..?
    Is there a typo in your description ( R8335A?)
    What problem are you having with the panel/system?

    I have a customer with relay, a contactor, zone valve and circulator for each zone....aka yikes!

    steve
  • brownbag
    brownbag Member Posts: 3
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    No flow checks. There was one that was decaying and a plumber replaced it a zone valve (the third on the system).

    No typo. Honeywell R8335A Multizone Hydronic Relay Panel. Hot water zone keeps shutting off. I have had to re-solder the circuit board multiple times in last several years. I would like to replace the relay panel.
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,506
    edited June 2016
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    I just looked up the pdf. So where/how are the zone valves connected? This zone controller is basically the Taco 503, but you add the transformer.
    I guess you are using the transformer for the thermostats AND the zone valves, and the end switches are wired to the panel. What's the rating on the transformer?
    I suspect this is why you are doing some re-soldering.
    do you actually need the zone valves.
    steve

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