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lennox furnace problem

Posted by iceman on February 4th, 2003 02:02 PM
In reply to Lennox G26 won't stay lit..... by Gary T on January 23rd, 2003 08:21 PM [Go to top of thread]

buddy buddy relax....calm down...where is the water coming from..??...simple...when propane or gas burns...water vapour is produced as a by product. on the old mid eff...furnaces...all of the steam....(vapor) goes up the chimney...a Hi eff furnace like your g26 condenses the flue gas vapour back to water(liquid)...and the heat that was in the steam goes into house and not might have noticed a "plastic" chimney vent and not steel like the old ones...lower exhaust temperature therefore more of your heating $$$'s go into house...the blockage in the drain line coming out of what is known as the flue collar is caused by either algae growing in the 1/2 inch black tube or from debris washing down the vent(notice the venting all slopes back to the furnace as some the the exhaust vapour condenses in the vent and needs to drain out the line in question)....on the left hand side of the furnace the rubber boot (collar) is attatched to the venting...disconnect the 1/2 inch tube by pulling down(carefull water coud run out if big blockage) and follow to the right of the what looks like a hockey puck..remove from connection and blow thru the line and rinse in hot water till clean...install is the reverse...note...while doing this you might knock the pressure tubing off of the ventor motor(looks like a stack of records with a motor attatched...the 1/4 tubing connects to the nipple on the 11 o clock position on the assembly front)....this happens on alot of high eff units...not just lennox....I know this because I I service all makes but am a Lennox specialist

this is just a a proffesional service tech for safety

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