Thermostatic Controls - ? Change Honeywell Chronotherm IV cycle time to 1?

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Dave4242
10-28-09, 02:07 PM
We have a large system with a buffer tank that supplies 3 hydroair zones. Our Chronotherm IV thermostats are set currently to 3 cycles per hour.
But the ones that are in rooms that get very little sunlight seem to cycle more. The next lowest setting is 1. Would you recommend that?
Oh, BTW, it is natural gas.


Jay11J
10-29-09, 12:27 AM
You can try to move it down to 1, and see how it works out for you.

Dave4242
10-29-09, 09:04 AM
You can try to move it down to 1, and see how it works out for you.

What would be the downside....that the room woukd cool off between cycles?


Jay11J
10-29-09, 09:55 AM
I don't think you are going to have any major downfall, the room may get a little warmer, then may feel cooler before it comes on.. But give it a try and see for yourself.

Dave4242
10-30-09, 02:37 PM
Thanks Jay. It seems like it's working fine in our attic space at 1 cph. From your explanation, it seems like in the milder weather, it just lets the equipment run longer but less times per hour.
But what confuses me is say the scenario where we have the temp set at 68. When the temp reaches 68, the tstat shuts off the heat. Then I would assume the temp would have to drop a certain amt (don't know what the differential is on these Chronotherm IV's is). So wouldn't the heat come back on at the same time whether cph is set at 1 or 6?
Or is it that once you get into the steady state of 68 deg, it is how often the heat comes on to keep that temp?
Thanks again.

Jay11J
10-30-09, 05:07 PM
Honeywell dont "swing" in temps, they keep it steady as they can, and the CPH is based on 50% load, the colder it gets, the longer the system is going to run..

Pretty hard to expline on how it works, just set your temp and enjoy the comfort.