Hello - new to the forum, so apologies if this has already been discussed - or if I have posted in the wrong section! I am about to buy a Jotul 118 - but there appears to be two pipes coming out of the left hand side of the reburn unit? I havent seen any other Jotul 118 pics with these pipes - and wondering if anyone knew what they were (maybe they were added at some point and have been cut into the side). many thanks - and appreciate any help.