Stoves can be easily self-installed but you need building control approval (which is easily done). You may wish to have your stove installed by a Hetas registered installer in which case you do not need building control approval. more information on stove installation.
The Pot hanger attaches inside the top of the liner and has a larger flange at the top that rests on the top of the chimney pot. This lets you install a chimney liner without removing the chimney pot. A top insert is needed if using a pot hanger.
