controlling water temp for in floor heat loop

hot_rod

product works on pex at high temperatures. No need to install any mix system. Easier to install if you have a lot of subfloor nails protruding, also.

hot rod

Larry Lewis

small in floor loop attached to conventional hot water system

Have a customer that has a conventional hot water system and boiler-gas fired- on coldest demand water temp averages about 160F with cast iron radiators. We are adding heat to kitchen under floor in joist pockets with finished tile above. What are the choices to control the water temp on this loop, so it does not get to hot, but can work in tandem with existing system with 1 thermostat, running the whole house?

jp_2

simplest method

taco I series mixing valve.

OR:

install whole house outdoor reset and use a ball valve to balance(use as mixing valve) the water temp in that area that will alway be proportional to the rad water temps