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Oil mist in blast tube? Time for LRFB?
Have a Peerless WBV-04 currently setup with a Delevan .85gph 80* nozzle, per the energey star specs on their site. However about once a month there is hard soot building up on the nozzle and electrodes and shutting down the system. Draft is .03" and it is running well otherwise. When the system has shut down I have seen a small amount of oil mist in the lad tube, not much but enough so it looks as though it may have sucked some back. Most literature says for this firing the low rate baffle should be used, but is not indicated by Peerless. Any ideas on what it might be or other areas to check. More than likely will just upgrade to their specific 1.10 hago B nozzle, but the oil consumption of the delevan is excellent and meeting all the heating needs, so I would like to keep the original size. thank you for any assistance.
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