Honeywell R8335A Replacement

brownbag

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

Steamhead

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

brownbag

Yes, three circulator pumps and three Honeywell zone valves.

STEVEusaPA

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!

brownbag

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

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.