Underfloor water heating system
The underfloor heating system can be done in almost any type of property and can be easily installed both in the existing and new central heating systems.
About the underfloor heating system
It is about heating a house with a water-based system by placing a series of hot water pipes in your flooring, basically turning the floor into a huge radiator. The pipe system which is feeding the system is connected to the existing heating system via a distributor. The distributor represents the central part of the water heating system and works on the water flow from the boiler. Instead of the high temperature water required in conventional heating systems, the water can be used at low temperatures due to the fact that the heating surface is much larger and, unlike a conventional heat source, does not have to dispense as much heat per square meter to heat a given room at a desired temperature.
The underfloor heating distributor
The hot water supplied by the boiler goes through a valve and in the distributor, which in its turn draws the water from the floor heating pipes. The cold water in the pipe system is then mixed with hot water in the boiler and goes through a heating pump and a temperature sensor that controls the hot water flow from the boiler that is sent to the distributor. If it detects that the water passing through the temperature sensor is warmer than the temperature set by the sensor, the zone valve will close.
Underfloor heating pipes
Almost the all modern pipes for underfloor heating systems are made of reticulated polyethylene which is poured into tubes. These poly-pipes are mainly used in building pipe systems, heating systems, domestic water pipe systems and insulation against electric (high voltage) cables.
Underfloor heating fitting. The wet underfloor heating systems
The wet underfloor heating systems that are installed on the blind floor with screed are the oldest form of modern floor heating systems. The pipes can be buried in a thick slab of concrete or in a thin layer of concrete or other materials installed above a blind floor.
The dry floor heating systems
In so-called “dry” floors, the heating pipes pass through an underfloor air space. For this type of system, reflexive insulation must be installed under the pipes to direct the heat upwards. The heating pipes can also be installed above the floor, between two layers of the blind floor. In this case, the pipes are attached to aluminum diffuses which distribute the warm of water to the floor for a more uniform heating of the floor.
The insulation for the underfloor heating system
The insulation should be considered as an integral part of your underfloor heating system. If the blind floor on which you attach your system does not have insulation underneath, you will need to place the insulation directly under the heating system to ensure manageable heating times and minimize the operating costs. The better the insulation of the floor is the better the efficiency and the heat produced by the underfloor heating system is, which means higher energy efficiency.
Installing the underfloor heating system. The wire model
To get the best results with a floor heating system, you need to ensure uniform temperatures across the floor surface. When the feed and return pipes are located next to each other, the floor is heated evenly. The water passes through the pipes and releases its heat. The cooled water returns to the distributor.
This technology offers the most economical floor heating system and is the preferred flooring installation.. The curl model
The feed and return pipes are not located next to each other and therefore do not allow the floor to be uniformly warmed. However, it may be the preferred warm floor heating when it is installed in rooms with cooler exterior walls or large windows. When you are using this arrangement, the first part of the feed pipes (the first meters of the pipe) must be placed along the coldest wall.
The distance between the heating pipes
When you are planning the disposing for your underfloor heating system, it is recommended to use 10 mm spaces between the main heating pipes and 150 mm spaces for the ambient heating. Obviously, if you change the measurement, you will affect the thermic output in that area.
If the recommended distance between the pipe centers is 100 mm or 150 mm, the recommended distance between the pipe and the wall is 100 mm.
The underfloor heating systems and the flooring surface
The underfloor heating systems can be used for almost any floor finishing, but different floor finishes have different heat resistance levels.
The floor, stone, marble and sandstone floor finishes have a low thermal resistance and allow a rapid thermal movement. Typically, these types of finishes are excellent thermal energy transmitters and will provide optimum efficiency in a floor heating system.
The carpet, wood and laminate floors have a higher thermal resistance and will slow the thermal movement. Therefore, these types of finishes require a reflexive foil or diffusion plates, usually made of aluminum or steel, and placed under the heating pipes to ensure adequate heat dissipation.
The thermostats and zone control for the underfloor heating (individual room temperature settings for each room)
Usually, each of the distributors operates via a single temperature control unit which controls the water flow from the boiler to the underfloor heating system and adjusts it to a uniform temperature. If you prefer to individually control the temperature in each area, you need electronic thermal acting to operate and control each room individually.
Each thermal acting device is installed on the fluid shut-off valve and connected to a control unit that is operated by a wireless thermostat, which allows you to set different temperatures for each zone.