controls on radiant

superdave

What is the best floor temp range on radiant when using floor sensor on quick tracks and joist tracks. I have installed two zones of joist track and five zones of quick tracks. All with floor sensor and room t-stat. Four zones of quick tracks have tile or stone floor. One zone of quick track with wood finish. Two zones of joist track with 2" of wood flooring.

hot_rod

depends on the sensor location

generally you do not want the surface temperature much over 80- 83 F. A surface temperature above that range becomes un-comfortable to walk on. The radiant design should be able to heat the space on a design day without exceeding that floor surface temperature.



In some cases high load spaces may need supplemental heat to meet the load on design days. In a residential application 25- 27 btu/ sq. ft is a reasonable expectation.



If the sensor is located below the wood subfloor and wood flooring, that may need to be adjusted higher than a sensor in a bare concrete slab, for example.



The floor sensor can be used to provide a temperature limit or to maintain a minimum floor temperature for a bath floor in the summer perhaps.



You may need to play around for a bit to get them dialed in to your comfort expectations. That is an ideal setup having both air and floor sensing.



hr

superdave

temps

Thanks, I have my flow sensors set to run a min. temp. of 76F and a max. temp of 82F. What is your thoughts.

hot_rod

try it

and see if it provides enough heat. You may need to bump it up a bit as the weather cools, and the heat load increases.



hr

superdave

OK

What about the min. temp. at 76F do think the pumps & zone valves be open to much with no rest like on a day like to 50F out door temp. Should I drop temp to have a longer down time I am just trying to keep the floor in a good comfort temp.