jeff5347 said:
Smokey, that flame is with LG granules. They are soft pellets. i noticed i am not able to even get the flame lazy and high even with the feed rate fully open to dump the most in. Im gonna try the New england pellets again as i now have a better understanding of the unit. Wit htose i got a really high flame i could at least adjust down. With thh LGs i cant get it even were it shgould be. So no you arent going blind the flame is only 2 inches above the firepot..
Also ..what is EVL exhaust valve leak? Elavated valve limit?
Would a OAK do anything for me or m ore of a waste of money?
Jeff,
EVL is equivalent vent length, there are limits for the venting system based upon applying certain numerical values to each kind of vent pipe.
The normal limit for 3" vent for most but not all stoves is an evl of 15 if it exceeds that the venting needs to be 4".
The numbers are:
1 foot of vertical length = an evl of 0.5
Tee = 5
90degree elbow = 5
1 foot of horizontal (we will discuss what horizontal really isn't) = 1
45 degree elbow = 2.5 or 3.0 depending on the manufacturer
If you turn an elbow so it is horizontal its evl doubles.
So if you have an adapter followed by a Tee and 4 feet of vertical followed by a 90 degree elbow followed by 2 feet of horizontal followed by a termination cap your vents evl would be 5+4(0.5)+5+2 = 5+2+5+2 = 14 so 3" is fine unless the stove manufacturer says 12.
Now a couple of things a non vertical pipe has a vertical and horizontal component which increases the evl over what the true vertical evl would be. Now about horizontal runs they best have a 1/4" per foot up bubble going away from the stove. They never should be horizontal and down bubble is a major restriction and problem.
This is pellet stove venting 101.
I'm a firm believer in using an OAK, have a reasonably tight house, what happens in a basement install when the juice goes out, and having no desire to toss any air that I have heated out the flue it wasn't even off the list from the git go.
My comment about the flame was more directed towards color and the possibility that the flue might be seeing more of the heat than it should and thus it is exiting the house instead of being used to provide usable heat.