Help me folks… this is one of the first Biasi boilers (Italy) I have seen during an inspection… not sure if I am seeing things right here…
the supply air to the burner appears to be drawn in from the exhaust vent? Is this correct? I could not imagine so but… hey been wrong before… sorry but I did not seem to get a good photo of the supply air feed at the burner.
Please correct me if my thoughts this is an incorrect set up are wrong!!!
I believe that it is a double wall exhaust vent, where the cold intake air is in the outside air space and the hot air exhaust is vented outside on the interior center of the pipe. Rinnai space heaters are vented this way also.
thanks guys… I had read about the double wall vent… but never seen them so was taken back by the set up… I told the buyer it may be such a set up but would look into it more… thanks for the education…