Jotul F500 V3 Oslo conundrum

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JamesGuido

Member
Jan 5, 2021
55
Raymond, Wisconsin
in december, we replaced our near 30 yr old vermont castings encore defiant with a jotul f500 v3 oslo stove.
we really like the jotul so far, and i don't see a reason why that'd change anytime soon.

however, i am stumped on one function of this new stove...
the primary air control lever on this stove can be completely in the closed position (to the far left side) yet the fire still burns perfectly.
during start-up, i can leave it at the closed position and it'll fire up fine.

the video shows how nice the fire burns with it "shut down".


the temp on stove top is approx 400ºF, on the flue 20" above at the same time is about 375ºF
doesn't seem like this is normal... like this shouldn't happen.
seems like there may be an air leak somewhere...
the ash door is completely closed, haven't emptied the ashes in three weeks (burn everyday, all weekend long).
the side and front doors are closed completely.

in 2 hours, i can burn approximately 35 to 40 pounds of dry oak in this closed position...
am i missing something... ??
 
Last edited:

kennyp2339

Minister of Fire
Feb 16, 2014
6,124
07462
New 2020 complaint stoves have larger static air openings to make sure all fuel gases are burnt as cleanly as possible. If you have a higher then recommended draft (.05inwc) then you'll see the side effects greater, best thing to do first is to test your draft with a manometer.
 

Ctwoodtick

Minister of Fire
Jun 5, 2015
1,580
Southeast CT
Fwiw, your video looks like my 2013 Jotul rockland on low.
 

Bad LP

Minister of Fire
Nov 28, 2014
1,800
Northern Maine
My insert will not starve the fire of air. I run it ‘closed’ all the time.
Strange? Yes. I know that for a chimney fire you close off the air supply. In my case I’ll have to create some steam should that happen.
 

Sailrmike

Feeling the Heat
Sep 20, 2017
289
06371
in december, we replaced our near 30 yr old vermont castings encore defiant with a jotul f500 v3 oslo stove.
we really like the jotul so far, and i don't see a reason why that'd change anytime soon.

however, i am stumped on one function of this new stove...
the primary air control lever on this stove can be completely in the closed position (to the far left side) yet the fire still burns perfectly.
during start-up, i can leave it at the closed position and it'll fire up fine.

the video shows how nice the fire burns with it "shut down".


the temp on stove top is approx 400ºF, on the flue 20" above at the same time is about 375ºF
doesn't seem like this is normal... like this shouldn't happen.
seems like there may be an air leak somewhere...
the ash door is completely closed, haven't emptied the ashes in three weeks (burn everyday, all weekend long).
the side and front doors are closed completely.

in 2 hours, i can burn approximately 35 to 40 pounds of dry oak in this closed position...
am i missing something... ??


I had a similar experience, once even a small load catches, there's no slowing it down. Too much air allowed in the stove: ash house unregulated ports (2), dog house, airwash, secondary.
 

CSJ_PA

New Member
Nov 16, 2021
4
19350

I had a similar experience, once even a small load catches, there's no slowing it down. Too much air allowed in the stove: ash house unregulated ports (2), dog house, airwash, secondary.
What did you guys end up doing? I am running a newly installed Jotul F500 Oslo V3 and have the same issues. I am pushing 28 ft flues and am thinking a butterfly flue damper is my best bet. (checked for leaks, can't find any)
 

CSJ_PA

New Member
Nov 16, 2021
4
19350
in december, we replaced our near 30 yr old vermont castings encore defiant with a jotul f500 v3 oslo stove.
we really like the jotul so far, and i don't see a reason why that'd change anytime soon.

however, i am stumped on one function of this new stove...
the primary air control lever on this stove can be completely in the closed position (to the far left side) yet the fire still burns perfectly.
during start-up, i can leave it at the closed position and it'll fire up fine.

the video shows how nice the fire burns with it "shut down".


the temp on stove top is approx 400ºF, on the flue 20" above at the same time is about 375ºF
doesn't seem like this is normal... like this shouldn't happen.
seems like there may be an air leak somewhere...
the ash door is completely closed, haven't emptied the ashes in three weeks (burn everyday, all weekend long).
the side and front doors are closed completely.

in 2 hours, i can burn approximately 35 to 40 pounds of dry oak in this closed position...
am i missing something... ??
Same here. What did you guys end up doing? I am running a newly installed Jotul F500 Oslo V3 and have the same issues. I am pushing 28 ft flues and am thinking a butterfly flue damper is my best bet. (checked for leaks, can't find any)
 

JamesGuido

Member
Jan 5, 2021
55
Raymond, Wisconsin
actually, we did nothing and it seems to have settled in quite nicely... the only thing i started doing since i posted this back in feb2021, i never emptied the ash pan. now, when i want to "kill" the fire, i move the air control lever to the left and it's noticeably dying down.
however, i haven't found the need to do so, but in case i need to leave suddenly and i have a nice fire / heat going, knowing it works is good.

musta been just like a breaking in period and or the full insulated ashpan.
i have since read about other Jøtul F500 v3 stoves with possible air intake with the ash pan.
 
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