I have found such combustion analyzer movie on youtube:
http://www.youtube.com/watch?v=UqQgiqPmz78&
feature=related I have a question. Shall it be enough for home DIY periodic maintenance ? I pay $200..$300 each time I call service but this device is for $200 on Ebay. What do you think? This is manual: http://www.elkom.com.tw/files/lmbd3_eng_03.pdf I simply don't want to spend money for contractors. I know how to replace nozzles, adjust pressures, clean..... Please advice