Harman - Feed adjuster settings for different grade pellets?

Hello

The test parameters below done yesterday was using the very best Cubex wood pellets with feed adjuster at 4 and the temp setting at 70 using room temp mode set to medium.and the new black room probe at 5 feet from the floor per the Harman DVD using the latest circuit board with the newest algorythms in the chip set.

Now if I drop down to Green Supreme wood pellets that are more ashy and give less heat, what would be a better feed adjuster setting? Would it be slightly above 4 with the other controls the same?
Does anyone have any settings for different grade pellets that they like?

Also see pics here >> http://firewoodhoardersclub.com/for...tall-finally-right-location-right-stove.1204/

Test for yesterday and last night.
Well Success at last with the right settings!
The right stove in the right location with the right settings and the best wood pellets for New England climate!

The temps outside yesterday afternoon warmed up to almost 60, so Harmy 1 automatically ramped down and turned off completely! Then it came on last night as the temps dipped to near freezing during the early morning. When I awoke, the Bedrooms down the hall were 68 Degs F, the Living Room and kitchen were 69 Degs F and the Basement was 75 Degs F. Now the door to the garage was closed and the garage is 60 Degs F. If I will be working there, I can turn on Harmy 2 and it will ramp up quickly with the new circuit board to bring the garage up to room temp.
Pellet usage was approx 1 bag of pellets since yesterday morning, not bad. It was full of Cubex that gave more heat and definately alot less ash than the Green Supremes to scrape from the burn pot!

Also think of the advantage of two vacuum cleanouts as double distilling! They keep the chimney clean!

The ductwork fan was completely off, but the basement doorway fan to the upstairs came on soon after Harmy 1 to bring the heat up.

Harmy 1 basement stove settings shown as follows:
Feed Adj = 4
Mode = Room Temp = medium room fan speed
Temp Dial = 68 Degs

See pic below, click to Enlarge.

 

My P-61 manual recommends setting it at 4 and leaving it there. That is what I do. Lower than that and you risk limiting the amount of pellets that can be fed if it really calls for a lot of heat. Greater than that won't affect anything until you get to the uppers limits of the stoves capacity.

 

I know Harman changed the algorithms in their chipset in newer circuit boards. The old Harman philosophy was "set the feed rate to 3" The older circuit boards like my old P61 board made the stove run hotter, that is why there still is a recommended lower feed rate of 3 on the old control panel door stickers. The new circuit boards have been toned down for better heat control and their feed rate setting should normally be 4.

So this is why the newer manual states to set the feed rate even higher for more ashy pellets that give off lower heat.

From the Harman P61a manual page 16 version 3-90-05822R24_03/13
Feed Adjuster Knob
For most premium grade pellet fuels the Feed Adjuster
Knob should be set at 4. If higher ash fuels are used
the setting should be increased to 5 or 6. Also higher
settings are required if you would like to get the
maximum heat output from the stove. At the maximum
burn rate (with the temperature dial on 7/90° and the
feed adjuster at 6) there should be 1" or more of ash
on the front of the burn pot. If there is less than 1" of
ash, turn the feed adjuster knob down to a lower setting.

See Feed Setting #3 in pic below

 

You may be right. Atleast I have a baseline with the Cubex and now I can go from there.

 

If you were burning Standard grade or Industrial or whatever they're called, you may have to change it. But I haven't seen any. I haven't seen any pellets ashy enough to make that much difference to have to change it.

 

Same here. I use to play around with the feed rate, but now It just stays right around 4.

 

yes, 4 is a good setting, thanks very much for your comments.

Got these comments from some other people

2 to 2.5 for Turmans or Okies on a P38

4.25 for Vermonts on a PB105

I had
4.0 for Cubex on my P61a-2

So for Green Supremes I am trying 4.5 to 5.0 for a feed rate.

Thanks People!

 

You all are just silly

Eric.

 

This is the key statement right here. Changing the feed rate for different pellets doesn't affect the way the stove operates. If you set the feed rate at 2, then turn your heat setting to 4, you probably won't feed enough pellets to satisfy the heat requirement no matter what kind of pellets your burning because you limited the amount of pellets that can be fed.

 

theoretically, you could set it on 6 and the stove will only feed what it needs to. It is all based on exhaust temp.

 

That is correct and the stove will adjust to the different brand of pellets.

 

I would not worry about the feed rate setting unless you are seeing unburnt pellets in your ash pan. Relax and have a beer.

Eric

 

That's good advice

 

The relax and have a beer part?

 

Someone say beer???

 

OK I'll have another