Radiant heating is a technology for heating indoor and outdoor areas. Radiant heating consists of "radiant energy" being emitted from a heat source. Radiant heating heats a building through radiant heat, rather than other conventional methods including convection heating.
A type of radiant heating system where the building floor contains channels or tubes through which hot fluids such as air or water are circulated. The whole floor is evenly heated. Thus, the room heats from the bottom up.
Radiant Floor Manifold
The main hot water feed will enter the bottom manifold (note the red-handled valve), pass out into the red PEX loops, return to the top manifold, and flow back to the heat exchanger via the exit at the top left (note the blue-handled valve). The interesting thing here is that the individual loop valves (which are controlled by the zone thermostats) are located on the cold-water return manifold, i.e. the exit of the loop, not the entrance.
Radiant Floor - Master
This is the first loop completed in the master bedroom. Here we had to figure out the best method to complete the radiant floor loops. Note the spaces that will have to be filled in later before the finished floor can be installed. Methods were modified to maximize efficiency while minimizing wood filler cuts.