Outdoor Wood Furnace Info

Outdoor Furnaces - Manufacturers WITH EPA-Certified Models => WoodMaster => Topic started by: sgd48843 on January 22, 2013, 06:03:47 AM

Title: LT90 working hard!
Post by: sgd48843 on January 22, 2013, 06:03:47 AM
Hey everyone. Here in S/E Michigan this morning it's about -4. The temp in the house won't go any higher than 70 deg. Anyone else's OWB having a hard time keeping up?
Title: Re: LT90 working hard!
Post by: swede on January 22, 2013, 07:24:09 AM
-28 here this morning.  Stove is keeping up just fine but taking longer to cycle and down to a 14 hour burn over night.
Title: Re: LT90 working hard!
Post by: Boydz on January 22, 2013, 09:44:54 AM
Whats your setup ? Would be interesting to know the details.

Something like:
How many sqft are you heating
Is the house insulated
Is it super windy ?
What kind os wood are you buring and is it green ?

Bla bla bla :)
Title: Re: LT90 working hard!
Post by: Scott7m on January 22, 2013, 09:52:40 AM
LT90's are fairly small in the owb market.  There max output is 90k btu

we should also know that max btu ratings are something we dont need to concern ourselves with to much. 

you can heat huge well insulated homes on 50k btu an hour, even in the coldest climates.  But the question is how many btu's can my stove produce over a 8, 10, 12, 14 hour period.  Then you'll start getting into the real numbers.

for example a boiler may be able to produce a max btu rating of 200k, but over 8 hours maybe only 80k, over 10 hours, only 60k, over 12 hours, maybe only 40k btu an hour. 

with that being said, grossly over sizing a stove isnt good, properly sizing is more important, id rather have a customer have to tend the stove 3 times rather than 2 per day on a couple of the coldest days of the year vs over sizing to much and having creosote issues all the time, and a host of other problems due to the stove idling all the time