Altecnic Robokit Extra Sealed System Kit 18L

Altecnic Robokit Extra Sealed System Kit 18L. Sealed Systems are the most commonly used form of central heating used in Europe, and most of the other parts of the world. Ease of installation makes it particularly attractive to the installer, alleviating the need to fit, feed and vent tanks in a central heating system. A closed or sealed heating system must include an expansion vessel and other ancillary components ( sealed system kit) to accommodate expansion of the water. In a closed heating system water cannot be compressed so any increase in volume, created by an increase in temperature, has to be accommodated by an expansion vessel. When water is cold, the pre-charge pressure forces the diaphragm against the tank towards the inlet. As the temperature increases, the expanded water volume pushes against the diaphragm creating additional volume for the water to enter.When the temperature decreases, the pre-charge pressure forces the water from the tank and back into the main heating system. This maintains a constant pressure within the heating system helping to reduce energy consumption. The Robokit Extra consists of an expansion vessel with a sealed system kit which contains: Expansion vessel, wall mounting bracket, safety relief valve complete with pressure gauge, filling loop. NOTE: The expansion vessel must be sized to suit the volume change of water within the heating system.