Boiler Expansion Vessel Replacement

If you have a combi boiler you will have an expansion vessel.

Boiler expansion vessel replacement. This vessel contains air and water from the central heating system and its purpose is to maintain the right level of pressure in the system. So if you need to replace this part of your boiler make sure you call a heating engineer. Repressurising the expansion vessel. Pumping up the expansion vessel in a combi boiler.

If the diaphragm in a vessel internal to the boiler fails provided it hasn t rusted through the vessel may be left in place and a replacement vessel fitted externally. This video shows you step by step on how to change an expansion vessel on a worcester boiler. Pumping up a gas combi boiler expansion vessel. First we switch off the boiler from the mains and shut the flow.

Depending on where it is situated complex parts of your boiler may have to be taken out in order to get to the vessel. Worcester bosch expansion vessels also sometimes called expansion tanks or pressure vessels are a component fitted internally to worcester bosch combi type and sealed system boilers and it s function is to compensate for the expansion of hot water as water will expand when heated producing a rise in pressure within the sealed or closed system. Expansion vessels also known as expansion tanks can be found in most domestic pressurised heating systems. Steam boilers are simpler systems that lack several components found in hot water boiler systems such as the circulating pump expansion tank and regulators for water pressure and temperature.