Replacement of fireplace insert

[Breidan]

Hello,
How do I separate the connecting pipes from the fireplace cassette? Can a sleeve be lifted to expose it so that the cassette can be pulled out from the fireplace? How tightly can it be attached?

 

[Tomasmexitegel]

Hello,
How do I separate connecting pipes from the stove cassette? Can you lift a sleeve to expose so that the cassette can be pulled out from the fireplace? How tightly can it be fixed?

There probably isn't just one model. I think you'll get better answers with good photos.

 

[Breidan]

Hi,
I think I forgot to upload a picture. Here it is.