Adjusting A Mixing Valve On Radiant Floor Heating

Radiant floor heating systems are very susceptible to heaitng problems due to water temperature.

Adjusting a mixing valve on radiant floor heating.

Mixing valves and controls for in floor radiant heating a solid control apparatus is the cornerstone of a well designed in floor radiant heating system. Overheating temperature swings underheating wood flooring shrikage carpet fiber break dow etc. The schematic below illustrates this approach. The chief function of a control system is to modulate and limit water temperatures to maximize efficiency and to insure against over heated floors.

Adding a basement radiant floor heating system to a water heater is a very popular option for many homes. It is important that a boiler s high temperature limits do not exceed the maximum temperature rating of the system components. A mixing valve is pre installed in this type of manifold. The much cooler radiant floor zones receive tempered water from the mix port of the mixing valve.

The baseboard or cast iron radiator zones for example receive super hot water straight from the heat source. Thermostatic mixing valves are for controlling water temperatures in pex radiant floor heat solar hot water heating and other hydronic applications. To ensure accuracy in adjusting the temperature setting make sure that the hot water supply temperature to the mixing valve is at least 5c 10f hotter than the desired temperature of the mixed water. Therefore addition of a mixing contol to a radiant floor system will signigicantly protect your investment.