Boiler Expansion Vessel Replacement

So if you need to replace this part of your boiler make sure you call a heating engineer.

Boiler expansion vessel replacement.

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. This video shows you step by step on how to change an expansion vessel on a worcester 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. Pumping up the expansion vessel in a combi boiler.

Depending on where it is situated complex parts of your boiler may have to be taken out in order to get to the vessel. Repressurising the expansion vessel. In some cases the boiler needs to be taken off the wall in order to fit a new expansion tank and this involves disconnecting the flue. 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.

If you have a combi boiler you will have an expansion vessel. An expansion tank is not found in steam boiler systems which create heat by circulating hot vapor rather than hot water through the pipes and radiators. Some internal expansion vessels can be very difficult to replace though improved designs on newer boilers now generally make it easier. First we switch off the boiler from the mains and shut the flow.