Our company bought one a couple years ago and I just started to mess with it. I'm just looking for some info on what I'm looking at and what's good or bad as far as readings. I couldn't find anything on the manual for it that helped. Any pointers or links pls, I really want to know wtf and do the best job I can.
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Go here to download a combustion guide from TruTech.
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Thanks
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o2 between 6%-9%
co under 100ppm and stable
flue temp on induced draft furnaces 302*-402* (80% furnaces)
90% furnaces flue temp under 135*
do not adjust gas pressure if you can not control draft.
once you learn how to control draft you may adjust gas pressure.
attend Jim Davis' class. He is the man!
ive had co rise up to 600-800ppm on startup. as it runs it should stabilize under 100.
co should stay stable
example; after running 5 mins co is 12ppm. at 6mins it is now 13ppm. at 8mins its at 16ppm.
this is an example of rising CO which is very very dangerous. you will see this mostly on exhaust pipes with draft diverters. this is a sign that it is not venting correctly.
if you take Jim Davis' class you will learn a lot about these problems and you will learn how to correct them
it is normal for CO to spike on startup
time to watch the debate. hopefully i have helped and will be back tomorrow.
http://www.nationalcomfortinstitute....ontraining.cfm
The most valuable training I have ever taken, bar none.
If your CO is above 100 you have a problem
if you have a unstable CO you have a serious problem.
If you start to overfire a furnace your CO will go over 100, O2 goes under 6%, or you will exceed the delta t or flue temps.
If you cannot control draft then you shouldn't adjust gas pressure.
I guess it's something I have to study to wrap my head around. There's hardly any training in our area too far north, and know one else I talk to seems to know much, plus I don't know many techs anyways. I have been doing service for going on 3 years mixed with installs with little help. Thanks for some direction anyways, it's probably better than learning from some "good enuf" tech.
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