Adjusting A Mixing Valve On Radiant Floor Heating

It is important that a boiler s high temperature limits do not exceed the maximum temperature rating of the system components.

Adjusting a mixing valve on radiant floor heating.

Mixing valves come in three packages. Overheating temperature swings underheating wood flooring shrikage carpet fiber break dow etc. The much cooler radiant floor zones receive tempered water from the mix port of the mixing valve. The chief function of a control system is to modulate and limit water temperatures to maximize efficiency and to insure against over heated floors.

The baseboard or cast iron radiator zones for example receive super hot water straight from the heat source. Adding a basement radiant floor heating system to a water heater is a very popular option for many homes. This will protect against component temperature failure should dirt sediment or other mechanical failure cause a mixing valve to become inoperable. 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.

Therefore addition of a mixing contol to a radiant floor system will signigicantly protect your investment. Thermostatic mixing valves are for controlling water temperatures in pex radiant floor heat solar hot water heating and other hydronic applications. The schematic below illustrates this approach. 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.