Maintenance on My AA 260

 
lzaharis
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Posts: 2365
Joined: Sun. Mar. 25, 2007 8:41 pm
Location: Ithaca, New York
Stoker Coal Boiler: Keystoker KAA-4-1 dual fuel boiler
Hand Fed Coal Boiler: former switzer CWW100-sold
Coal Size/Type: rice
Other Heating: kerosene for dual fuel Keystoker/unused

Post by lzaharis » Sun. Dec. 04, 2016 12:51 am

Hello Rick,

I hope the Domestic Hot Water Coil exchange surgery went well.
Did they ship a new gasket with the correct Domestic Hot Water Coil?
I guess I have been lucky with mine as I have no drips at all as the coil
was installed in their factory after the shell was welded together
I have been averaging about 60 Pounds of rice coal every 18 hours
or so in the KAA-4-1.

The timer motor in the Intermatic 30 minute timer died a slow death and I replaced the timer motor last week which explains a lot about how the boiler was running and having so many outfires.
I have 2 minutes/8 pins at 0 time and 9 pins at 15 minutes on the timer, the ash band is 1 inch wide, The burning coals are 3-4 inches long and the flame is perfect for the hold fire and the heat call fires.
The new Honeywell controls being the L8214L1011 Horizontal Triple Aquastat is managing the KAA-4-1 temperatures of 120 low 150 high with a 10 degree differential very well with 14-20 P.S.I.G.
The stoker pusher plate is backed off to 9 threads and separate B+G BullDog RB-122-E Dog Low Water Cut Off is working properly and protecting the boiler.

SO I have a Happy warm cat, Happy warm dog, Happy Spousal Unit walking on warm floors.
I hope to change the baseboard and install radiators; StokerDon has had me drooling and thinking about cast iron radiators for a while for even more thermal mass, more water using the square European copper pipe to eliminate the copper pipe under the doors and the concrete someday.

Happy Holidays to you and your family Rick

 
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Rick 386
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Posts: 2508
Joined: Mon. Jan. 28, 2008 4:26 pm
Location: Royersford, Pa
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work
Contact:

Post by Rick 386 » Mon. Dec. 05, 2016 9:49 pm

Leon and follow coal burners,

I did the coil switch but still had an increasing pressure problem. So I figured it must be the manual fill valve. So this past weekend I replaced it. Still waiting to see if that fixed the issue.

But other family issues has put this on the back burner so to speak.

Rick

 
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Rick 386
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Posts: 2508
Joined: Mon. Jan. 28, 2008 4:26 pm
Location: Royersford, Pa
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work
Contact:

Post by Rick 386 » Sun. May. 07, 2017 10:52 pm

So the AA 260 has been performing great through the heating season.

Now that we are getting into the DHW only season, what are the settings that I should be using on the 8124c aquastat ??


The old system only used 2- L4006 aquastats. I'm not so sure where I need to set this using the differential. Right now we seem to be getting a lot of unburned coal in the ashes.




Rick


 
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coaledsweat
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Posts: 13763
Joined: Fri. Oct. 27, 2006 2:05 pm
Location: Guilford, Connecticut
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Post by coaledsweat » Sun. May. 07, 2017 11:15 pm

I would avoid going under 160° for the high end. You want to keep O2 out of the water.

 
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hotblast1357
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Posts: 5657
Joined: Mon. Mar. 10, 2014 10:06 pm
Location: Peasleeville NY
Stoker Coal Boiler: 1984 Eshland S260 coal gun
Coal Size/Type: Lehigh anthracite pea
Other Heating: air source heat pump, oil furnace

Post by hotblast1357 » Mon. May. 08, 2017 5:16 am

If there are no leaks and he is not adding fresh water how does the o2 form?

 
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Rob R.
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Joined: Fri. Dec. 28, 2007 4:26 pm
Location: Chazy, NY
Stoker Coal Boiler: EFM 520
Hand Fed Coal Stove: Chubby Jr

Post by Rob R. » Mon. May. 08, 2017 6:02 am

Rick, I would start with whatever Axeman has in the manual. I think it is 165/190 with a 10 degree differential. A timer would probably help with the unburned coal also.


 
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coaledsweat
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Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Post by coaledsweat » Mon. May. 08, 2017 6:40 am

hotblast1357 wrote:If there are no leaks and he is not adding fresh water how does the o2 form?
It doesn't form, it is drawn in. Good luck stopping it with a piece of pipe, oxygen will diffuse through metals seeking equalibrium. The O2 barrier on PEX does not stop it, it just slows it down.

 
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Rick 386
Member
Posts: 2508
Joined: Mon. Jan. 28, 2008 4:26 pm
Location: Royersford, Pa
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work
Contact:

Post by Rick 386 » Wed. May. 10, 2017 7:52 am

Thanks CS and Rob.


Just got slammed at work and haven't been able to post a reply to your suggestions.




Rick

 
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Rob R.
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Joined: Fri. Dec. 28, 2007 4:26 pm
Location: Chazy, NY
Stoker Coal Boiler: EFM 520
Hand Fed Coal Stove: Chubby Jr

Post by Rob R. » Sun. Nov. 19, 2017 4:05 pm

The summer has come and gone. Hope you are ready for another heating season.

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