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In a closed central heating system water cannot be compressed so any increase in the volume, created by an increase in temperature, needs to be accomodated. This is done with the use of an expansion vessel, when the water in the system is cold the pre-charge pressure of the system forces a diaphram in the expansion vessel against the tank towards the inlet. As the temperature increases the expanding water volume pushes against the diaphragm creating additional volume for the water to enter the expansion vessel. As the temperature decreases the pre-charge pressure forces the water from the expansion vessel back into the central heating system. This maintains a constant pressure within the central heating system and helps to reduce energy and water consumption.
The new for 2013 Worcester Greenstar CDi Compact combi boilers are the smallest and most efficient boilers that Worcester Bosch have ever produced. They are suited to properties that demand high outputs from a boiler that can fit within a standard kitchen cupboard.
The Worcester Greenstar 36CDi Compact LPG combi boiler condense in both heating and hot water modes, resulting in greater efficiency and fuel savings.
5 year boiler guarantee until 30th June 2013 (terms and conditions apply).
10 year guarantee on primary heat exchanger.
Central heating output: 24kW
Domestic hot water flow rate: 14.7 litres per minute at 35 degree temperature rise (provided adequate mains water pressure is available)
SEDBUK Effieciency: 90.5% A
Siemens Wireless Room Thermostat