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Do thermostats have to be matched to the zone valves. My contractor changed the thermostat from a round Honeywell Mercury type to a new digital model 3000. With both thermostats old and new the thermostat cycled quite a lot and is turning on and off in short intervals like it is trying to get a very small temperature gain less than .5 degrees I estimate. Because the boiler is controlled by the thermostat I am getting these short boiler runs which has me concerned.
Is it possible to get a new thermostat with adjustment to increase the temp difference so it stays on longer and cycles less .Any advice is appreciated.
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EcoSteam ES-20 Advanced Boiler Control
Boiler pictures updated 2/21/15
https://www.facebook.com/media/set/?set=a.10202744301871904.1073741828.1330391881&type=1&l=c34ad6ee78
The manual also does not discuss Cohen.
EcoSteam ES-20 Advanced Boiler Control
Boiler pictures updated 2/21/15
https://www.facebook.com/media/set/?set=a.10202744301871904.1073741828.1330391881&type=1&l=c34ad6ee78
https://www.forwardthinking.honeywell.com/related_links/thermostats/pro_3000/install/69_1846.pdf
EcoSteam ES-20 Advanced Boiler Control
Boiler pictures updated 2/21/15
https://www.facebook.com/media/set/?set=a.10202744301871904.1073741828.1330391881&type=1&l=c34ad6ee78
From the descriptions I find of that thermostat, it very much looks as though it is meant for heat pumps and forced hot air systems of various kinds -- so it may not be usable.
What was the matter with the old reliable round Honeywell, that you had to replace it?
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.
Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
Thanks for the reply. I think I need a thermostat that the cph can be set to eliminate the short burner running.
There are other upgrades than the thermostat to help your heating system become more efficient. Controlling the cycles per hour is a way, but it may greatly affect your comfort meaning that it can get cold in your home before the thermostat can even think of turning on the system because the number of cycles has already been reached.
Consider Outdoor Reset control and/ or variable speed circulators that affect the boiler directly to add the economy of operation WITHOUT sacrificing comfort.
Dave H.
[email protected] yahoo.com
(207)229-7717