The piping used in a radiant floor system has to be able to withstand the pressure of the hydronic fluid. The pipes should also be resistant to corrosion and have the flexibility required for infloor installation. They should also be easy to work with and have a good finish that can hide any cuts made during installation. Stainless steel is a great option for radiant floor systems as it offers superior corrosion resistance and excellent strength. It can also withstand high temperatures and is highly durable, making it the perfect choice for infloor heating.
The pipe temperature has a direct effect on the hot water flow rate and heat output. The size of the tube and its spacing are also important factors. Smaller tubes with wider spacing produce fewer BTUs per square foot than larger ones that are spaced closer together. The chart below provides a good starting point for determining the right sizing.
Choosing the Right Tubing
To maximize performance, the PEX piping should have a smooth inside surface that minimizes turbulence and resistance. It should also be compatible with the type of hydronic control system chosen for the system. Typically, these include a boiler, a thermostat and a circulator pump.
Another key factor is ensuring that the pipes are properly installed in the concrete slab. This includes using PEX fastener ties, bend guides and pex-manifold adapters. The concrete slab must also be well insulated. If the concrete isn’t insulated, it will increase response time and require more energy to reach the desired floor temperature. In addition, the conductive transfer of heat to the concrete will be reduced. floor heating pipe
