Vista Flame VF 55-FS; Identical units one burns great, the other not so much; why?

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NHmeanie

New Member
Feb 5, 2019
1
Salisbury, New Hampshire
Hi,

We have two identical VF-55-FS, one upstairs and one in the basement. We have been using them as our primary heating source (in NH) since December 2013. We use between 4 and 5 tons of pellets every year.

I am seeing a huge difference between how the two burn. The upstairs stove is burning much cleaner than the downstairs stove. Pellet ash in the downstairs stove is black and the inside of that stove appears blackened and glazed while the upstairs stove ash is grey in color and dusts off instead of the scraping that I need to do on the downstairs stove.

Another indication of how differently both burn is how easy it is to clean the exhaust tubes on the upstairs stove and what a nightmare it is to clean (get the scraper to move) the downstairs exhaust tubes.

FWIW both do an adequate job of heating our house (~3000 sq, ft, half upstairs and half downstairs). I clean both stoves before each heating season as well as the chimney pipes. I usually do at least 3 or 4 fairly thorough cleanings during the winter. In between those cleanings I will do what I say is a light clean (brushing down the insides, scraping out the burn pot and emptying the ash tray/bucket.

Bottom line is that though both are running OK, the inside of the downstairs unit looks completely different to the inside of the upstairs stove.

FWIW obviously the basement stove has a much longer chimney than the chimney for the one upstairs.

I want to "tune" the one in the basement to burn as clean as the one upstairs.

I can provide pictures if anyone thinks that would be helpful.

Thanks for any pointers!!!

Matt
 
What are the configuration of the 2 exhaust vents?
 
Sounds like one stove is breathing better than the other
Its seems to me that every time I read a story like this it is the basement stove that is having problems.

I agree, the one in the basement is starving for air.
 
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Are you able to set the draft(s) to get similar flames on the two stoves?

Do you have outside air going to either stove?

Are you storing pellets for both stoves in the same place?

Just some Qs...
- Jeff
 
Sure sounds like Air to me. I had my stove do the black mess and had to clean my chimney and replaced the wire cloth preventing birds in spring seeing it as "great nesting place". Gotta remember to put it back in.