Having my P43 installed this week. Looking through the manual and saw the section on low draft voltage adjustment. Is this draft test mandatory?
Harman Draft Test??
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I wouldn't say it's mandatory but definately recommended.your installer should have a magnahelic gauge like the one in the pic and can adjust the stove to the harman recommended draft. I will say that when I spoke to my local harman dealer they Said they never use this and adjust by eye. These can be had for cheap money on eBay
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Mt Bob
Minister of Fire
Adjust by eye!
If draft too low,stove will burn dirty.If draft too high,will waste much heat up/out the pipe(but glass will stay amazingly clean).I recommend having it checked.
If draft too low,stove will burn dirty.If draft too high,will waste much heat up/out the pipe(but glass will stay amazingly clean).I recommend having it checked.I was surprised to hear that from the dealer too. Having said that, I've probably bought and sold at lest 10 harman a in the past 2 yrs and all were still set to 0 on the low draft so when they were installed my guess is that they were never dialed inAdjust by eye!
Mt Bob
Minister of Fire
Shows how in manual,except if yours shows using a plug,is easier to put a t fitting inline with the vacuum switch.
alternativeheat
Minister of Fire
One thing about setting the draft is that not all pellets burn the same. In my case is that overall I had a blow torch three forks of white tipped flame with most pellets that I burned ( i attributed that to slight over drafting with my 23 ft 4" vertical rise liner). I just marked where the draft screw was set and turned it down a 1/4 turn till the tips started burning more like a flame than a blow torch.The pellets settled down a little too. If you go too far it will begin to soot up the fire brick ( the p61 has fire brick), so just turn it back up a bit. It's not rocket science, it's just a little screw but the key is to definitely mark the starting point so you can get back there if need be..
I'm burning Fireside Ultra right now, that screw could go up just a touch with these. It's perfect where it is at with LG pellets.
Adjusted my P61A by eye, data collection, and heat output. Took about 24 hours to get it perfect. It's basically almost off. My existing wood stove chimney has a ton of up-draft when warm.
From what I have seen, most are set way too high. Excessive pellet consumption, less stove heat into the room (more up the pipe), and a much more ashy stove interior from excessive flying embers.
From what I have seen, most are set way too high. Excessive pellet consumption, less stove heat into the room (more up the pipe), and a much more ashy stove interior from excessive flying embers.
I have one of the Harman diognostic tool(DDM)which gives digital readout. They're not cheap. I was fortunate enough to see one for sale on Craigslist and only paid $50 for it
Pete Zahria
Minister of Fire
I just saw your post and googled your subject line for my xxv...I found a pretty good response that comes from Harman and I had no idea what the
"screw" was for on the pane.
Thanks! Do a quick search for your stove. This is what I found...
https://www.manualslib.com/manual/621185/Harman-Xxv.html?page=20
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