Post in 'The Pellet Mill - Pellet and Multifuel Stoves' started by lbcynya, Sep 30, 2012.
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I've had my Harman XXV since beginning of January 2013 & still struggle to get the stove to work efficiently. I clean the glass & within 15 to 20 minutes of starting a fire on auto my glass is sooted up. After a hour or two it has about a 1/3 of the glass sooted up. I try to go by the 1" ash rule but with same results. I smell the stove outside sometimes & it has a different smell than my other stove ( Cumberland 3700). My best fires are at 2 1/2 of the feedrate & 70 on room temp auto. Any suggestions on what I'm doing wrong? If I run on 4 like manual says I get hot coals being pushed into the ashpan.
There is something wrong. I don't think it's the way that you are running it? What kind of pellets, and have you tried different ones? Are all of the holes in the burn pot clear? Have you done a dollar bill test on the door seal? Check for blockage in the exhaust path/venting?
I've tried 3 different type of pellets with the same results. The stove is only 2 weeks old but I did clean the firepot holes a few days ago & they were all clean. Haven't did the dollar bill between the door yet as we've been running it but the door is hard to shut (Very tight) so I don't think the door gasket is bad yet. Appreciate the suggestions!
Accentra FS, my settings :
- feed rate 3 / temp rate 3-3/4 (20°C ~ 68°F) / maximum distribution fan,
- coming home after a week > 'stove temp + auto' during 4 hours for a quick and efficient heating,
- snowy weather > 'room temp + auto' is the best mode, but gives a +/- 2.5°F room temp. (66 to 71°),
- cold weather (night & day < 32°F) > 'room temp + manual' gives the best heating with few pellet (and few temp. variations),
- extreamly cold weather > 'stove temp + auto'...
'Room temp + auto' or 'room temp + manual' 7/24 needs ~33 pounds a day, for us, more with 'stove temp + auto'.
I noticed ESP cleaning (I took down ES probe and rubbed it with 000 steel wool) needs to turn up a bit the temp setting.
PS : After cleaning, select 'stove temp + auto' and the stove will light on even if room temp is too hight.
Great info, I have the Harman Hydroflex 60 boiler, anyone with any additional tips on it?
Can you start another thread with pictures of your entire setup. This will get you access to the pro's for advice. Sounds like an intake/exhaust issue to me.
Good post on Harman's "new feature" to allow shutdown of the stove in the event of a power loss - with the right battery backup:
This is for post November 2010 stoves with the "E" series board. If you have an older stove, you'd need to buy an newer board or see if Harman would consider upgrading it...
Cleaning tip - During your periodic cleaning, turn the knob to "test" while you clean the firebox to evacuate the ash out the chimney vs. into your room.
Thank you more than you know! I have been suffering with soot all over my house every time I clean the stove... I could not be more excited about this tip!
General question: What settings should be used for maximum heat output? Stove temp set to highest? Or room temp in recovery? What about feed rate? I know raising it can be wasteful, but will it produce the maximum output?
For example: let's say I've just finished cleaning my stove, but my house temp has dropped 10 degrees since I initiated shutdown. What setting will regain those 10 degrees the fastest?
I've actually found an even better way... Just open the door and turn the stove on (switch to manual) the combustion blower will run but not the distribution blower which doesn't need to run anyway. Shut it off, close the door, lid, etc. and turn it back on for normal operation.
If you have your feed rate set to an optimal level, as noted in the beginning of the thread, with a good pellet you'll reach ESP temps in the low to mid 400's range (think 500 is max) which should get things up to temp quickly. With Somersets, I can get to 445 with a feed rate of 2.5... If you want to push it you can turn up the feed rate and check for spilling pellets or smoke (incomplete combustion) which means you are "spinning your wheels". Remember, the ESP is in the exhaust, so it's measuring waste heat not just stove temperature.
In stove temp mode, you'd need to set the temp knob to 7 in order to allow for max ESP temp.
In room temp mode, the stove will always allow max ESP temp until the heat request is satisfied. Quality of pellet and feed rate will determine how close to max temp the ESP will see.
My XXV ran like that before I put in an OAK. Do you have an out side air kit?
I'd like to add that I was told by Harman that in the case of a pellet furnace at least, if the wall controller does not agree with a digital thermometer you have near the wall controller, do not slip the dial on the wall controller to get them to agree. You can use the "temp knob" that you would use in manual to trim the wall controller running in automatic.
The temp knob has a "normal" setting that you run at in automatic. If that "normal" setting is off from the digital reading, you will see that the temp dial is labeled 1-2-3 normal 4-5-6. The 3 numbers below normal are -1 degree increments and the 3 number above are +1 degree increments from the wall controllers dial setting. So you can trim the temp setting by +/- 3 degrees.
I found that once the edit capability expires, you can still click on edit and then click on "more options". When it opens, you can once again edit whatever is showing.
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