Quick ? om EVL

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jeff5347

New Member
Dec 13, 2011
59
Central MA
Ok so i was checking this morning to see what my EVL is and this is what i have:\

BTW my piping is 3" diam now. Listed is how it is routed from stove to end.

1-cleanout T +5'
51" V =4.25"x.5= 2.125'
1 90*= 5'
24" H= 2'
1-45*= 3'

This is were im not sure if i count it. At termination outside the house i have a 45* tube like this
This is not my pic but mine is pretty much the same.


With out the 45 counted im at 14.125 EVL. With it counted im at 17.125. Im gonna assume its counted as it is part of the system. If it is considered and im at 17.125 and im so close to 15.. would i notice any difference in performance changing all to 4". It wont happen this year as Madame Defarge is not happy with money spent on stove upgrades.. (ducts, venting, inline boost fans, ect)..plus i know it will be a pretty penny to change all to 4"
 

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24" H+=2' is the straight piping? If it is then it should be a 1 on the EVL scale.
 
Hoverfly said:
24" H+=2' is the straight piping? If it is then it should be a 1 on the EVL scale.

24 inches on horizontal is 2 feet x 1 per foot = 2 for the EVL

The termination is not counted nor is the stove adapter.
 
jeff you are just under the limit for 3" pipe with most stoves.

Hey while you are at it serve Madame Defarge some cheese and ask her if she'd like some whine to go with it (bear now exits the building to scan the horizon for a mushroom cloud and a very bright flash).
 
Ok so im under the 15 limit. If by chance i convinced her next year to go forward on 4"... what will it do for the stove?

Smokey,
Do you guys want me to post here anymore? If i do that you wont see a mushroom cloud... the whole world wll expode. hahaha. And id probably be half way to the moon rom a boot print on my a$$
 
jeff5347 said:
Ok so im under the 15 limit. If by chance i convinced her next year to go forward on 4"... what will it do for the stove?

Smokey,
Do you guys want me to post here anymore? If i do that you wont see a mushroom cloud... the whole world wll expode. hahaha. And id probably be half way to the moon rom a boot print on my a$$

I hear ya on the boot print.

The 4" is going to make it easier on the combustion blower and allow a little more time between cleanings before the lazy flame syndrome hits.

A for posting on here I understand that there is wi-fi on the moon ;-).
 
Smokey, about the cleaning s of the pipes. They put sheep metal sdrews to hold it all together and a heat resistant caulking so no fumes would get thru the vents and the slip ons.... this im assuming why its there. So when i go to clean this do i just disconnect from the back of the stove and unscrew all the pipes and get a brush to clean the inside. Also how often is this necessary... once ayear...?
 
jeff5347 said:
Smokey, about the cleaning s of the pipes. They put sheep metal sdrews to hold it all together and a heat resistant caulking so no fumes would get thru the vents and the slip ons.... this im assuming why its there. So when i go to clean this do i just disconnect from the back of the stove and unscrew all the pipes and get a brush to clean the inside. Also how often is this necessary... once ayear...?

Well I've never taken my venting apart except at the t-cap a couple of times.

I remove the termination cap outside, run a brush into and down the flue. This puts the mess into the tee and the area between the tee and combustion blower which I then remove and insert a vacuum hose.

Brush off the combustion blower impeller and remove the mess between the impeller and blade.

Then I brush from the combustion blower cavity back to the ash traps on the stove, a bit of brushing on the heat exchanger followed by a bit of thumping of the fire box, then the baffles come off and the vacuum hose gets a work out.

Reinstall the combustion blower, button everything back up and do a bit more thumping, attach the leaf blower to the venting and watch the show. Clean the termination cap and put it back on the venting.

This I sometimes modify, but I've had it playing with t-caps and other than the termination nothing gets unscrewed or twisted off. That way there is no danger of busting a seal inside the house, etc ...

This can be done anywhere from once a ton or perhaps every ton and a half, it depends upon the weather and how long I want to have the stove shutdown.

I've also been known to just attach the leaf blower every half ton, my stove is quite simple and easy to clean, replacing parts on it is another matter. I have plenty of band aids and neo.
 
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