Sadly it requires two procedures that I can’t carry out, the pump pressure needs to be set with a pressure gauge and the airflow adjusted to produce a clean burn. Tested with a gas analyser at the flue.
I have found a local chap who seems willing to to come along and check and adjust the installation at a fair price so I’m happy with that. Found him through a pal in my car club! Comes recommended. We’ll see…
