An Overview of UFH and thermostats
All Underfloor Heating (UFH) systems have at least one central thermostat which controls the overall room temperature. This is often a wall mounted manual device, although modern systems can also be controlled via an App designed for smartphones. This thermostat allows the client to set the room temperature they require, and it simply switches the system on and off when the air temperature reaches the set levels.
However, the temperature of the water in the UFH system pipework below the floor is controlled by a different thermostat, usually on the pipework manifold, which is pre-set by the engineer when the system is installed. Whenever the room thermostat is calling for heat, and the system is switched on and running, the water flows through the pipework at that pre-set temperature and continues to do so until the room thermostat cuts out and the system switches off.
If the manifold thermostat is pre-set too high, the floor will overheat whenever the system is running, and damage will be caused. This will occur irrespective of the room temperature setting. Hence keeping the room thermostat on a low temperature will not solve the problem as the water temperature in the pipes will still be too hot.
Conversely, if the manifold thermostat is pre-set correctly, raising the setting on the room thermostat will simply cause the system to switch on, and while it may stay on for a long period, this will not in any way increase the underlying running temperature of the water in the pipework.
UFH and Woodpecker Floors
For Woodpecker engineered wood floors, we recommend a maximum temperature of 27°C at the underside of the wood floor, and the system needs to be designed and set up to keep within this parameter. This applies to electric UFH systems as well and it is always advisable for the client to confirm with the UFH supplier that the system can be controlled within these limits.