Best way to design input to low and high temp emitters

i have BB throught my house, with my kitchen has staple up radiant. My radiant zone has a mixing valve i can manually adjust from 120 up to 160. It's on it's own loop/zone. Temp probe mounted at floor level turns on the zone valve for radiant floor.

Just looked at it. Honeywell AM series. It goes from 100 to 145. This time of yr it's turned down to to about 110/120 in the winter i will turn it up to about 140. The staple up is below 2 layers of plywood and a ceramic tile floor

flyingcow said:

Just looked at it. Honeywell AM series. It goes from 100 to 145. This time of yr it's turned down to to about 110/120 in the winter i will turn it up to about 140. The staple up is below 2 layers of plywood and a ceramic tile floor

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A thermostatic valve is a good option for fixed temperature mixer, simple, reliable. It cannot be used as a weather responsive valve, if that is ever an option, for that you need amotorized valve.

Consider also a Caleffi 521 Mixcal it has a good flow rate with a larger body than other brands and is adjustable from 85- 150F. The optional gauge accessory makes it nice to dial in temperatures.

Typically 30- 40,000 BTU/ hr thru a 3/4 or 1" thermostatic valve is possible.

This link shows how to size and design mixing systems.

http://www.caleffi.us/en_US/caleffi/Details/Magazines/pdf/idronics_7_us.pdf


hr

I used the Watts 1170-US-M2, that is the 1/2" number, I use the 3/4 naturally. Just pop out the plastic check valves. As Bob said though, Caleffi makes nothing bad..... at least I havn't found anything bad yet, you get what you pay for.

TS

My radinat floor was put in when i just had oil heat. Now I would like to swap it out with a thermostatic valve, would keep the floor at steadier temp