Harman XXV air supply

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bclmread

New Member
Jan 11, 2008
64
NH
Have a new XXV and am pretty happy with it.

Where does the combustion air flow from? From the auger hole?

Understanding the air flow will help me get the best performance from the stove...I know where the combustion air exits the burn area...there is a small square hole behind the ash pan...

I have an outside air supply kit attached to my stove...

Thanks!
 
bclmread,

When the combustion fan is on it draws air through the outside air kit, then distributes the air into the burn pot (small holes) beneath pellets. Then as you stated, the air exits down by the ash pan.
 
bclmread,

Also, if you take of the two wing nuts below the burn pot you'll see how the air is distributed to the burn pot.
 
Porter said:
bclmread,

When the combustion fan is on it draws air through the outside air kit, then distributes the air into the burn pot (small holes) beneath pellets. Then as you stated, the air exits down by the ash pan.

And there are 2 holes at 10 and 2 (clocks perpsective), just below the flame guide that direct air over the fire. These are often overlooked. The back of the burn pot is milled out to allow air passages to these locations. They must stay clean or you flame will only favor the clean side.

No air goes through the auger tube, unless you open your hopper lid.

PS - Read my sig for almost everything you need to know to get the most out of your stove. :)
 
I have taken the wing nuts off (and related plate) to clean in where the starter wire is...

I will have to look for the 10 & 2 holes...I have not noticed them during my previous cleaning...are they noticeable from the outside? Will definitely need a flashlight in there...
 
bclmread said:
I have taken the wing nuts off (and related plate) to clean in where the starter wire is...

I will have to look for the 10 & 2 holes...I have not noticed them during my previous cleaning...are they noticeable from the outside? Will definitely need a flashlight in there...

You will after you take the flame guide off.

3 tips for cleaning a Harman (especially the xxv):

1. Turn the feed rate knob to "test mode" to prevent soot and ash from getting in your house or all over you
2. Buy a headband flash light to do cleanings. A bit dark inside the xxv, a 20 dollar "head light" from WalMart or wherever does wonders!!!
3. Buy a mechanics pry bar (14" or so) to chisel the carbon build up at the sides and bottom of pot. Harman tool is worthless for this,
but the prybar makes quick work of it.
 
LOL...I have thought a headband flashlight would be helpful...I have one somewhere.

I didn't know I was to take the flameguard off...is that the upper shield above the flames?
 
bclmread said:
LOL...I have thought a headband flashlight would be helpful...I have one somewhere.

I didn't know I was to take the flameguard off...is that the upper shield above the flames?

Yes, you can take the flame guide off when you do a quick weekly cleaning. Fly ash tends to build up behind it. Literally rests on the burn pot, so removal is a second.
 
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