Taco zone valves and honeywell thermostat not compatable?

Jfonto

I just got a new Burnham Alpine boiler, with a Taco four zone controller and Taco zone valves. The installer left the old thermostats(honeywell, round, old, mercury) and now I think they are not appropriate for this system; the amperage(.05) is way to low for the lowest anticipator setting and the rooms are getting way too warm.

I like the Honeywell round digital. I don't need a programmable. But the manual says it can't be used with taco zone valves.

Is this always true? Can I get around this? Why?

P.S. This site and the  forum members are, by far, the best source of heating knowledge on the web. I've really feal like i've found a treasure. 

Jfonto

This post in controls also

This post in controls also.

Thanks

Joe Mattiello

Taco 570 series

I posted a technical document released many years ago explaining how this valve works.  there is no compatibility issue with Honeywell thermostats. if you have an anticipator on the thermostat, it should be set to .9 which is the amp load on the 570 series valve.

Jim Hankinson

Taco/Honeywell compatibility

It's been my understanding that the heat anticipator is set to the current draw of whatever control it's wired to, in this case the zone control which has a rating of 0.18a. If you increase the heat anticipator setting to 0.9 you'll over heat quite a bit more than you are presently experiencing. You would set it at 0.9 only if the t'stat were wired directly to the zone valve.

bill_105

.18 ?

Where did that come from? And besides, what do these guys from taco know anyway?

All those boxes are is a either a 40 or 80 VA trans with some terminals.

Watch out for them Rum balls!

Jfonto

Taco Honeywell

The Zone valve circuit is separated from the thermostat by a relay, so the valve doesn't draw through thermostat; I've come to realize. But is that the problem, the current draw through the thermostat from the valves.