Would a AA-130 be overkill . . . ?

Would a AA-130 be overkill . . . ?

PostBy: EnergyAllStars On: Sun Jul 27, 2008 10:02 am

I've got a 1500 square foot house in central MA. . . . very well insulated and tight as far as building limits are concerned. I'm a phone call away from purchasing a coal fired boiler (steam system). My question is this, would an AA-130 be overkill in my house. I highly doubt it will ever see it's full potential in BTUs by the time we reach our desired temp on the thermostat. Some advice would be greatly appreciated!
EnergyAllStars
 
Stove/Furnace Make: SOON. . . Axeman-Anderson
Stove/Furnace Model: AA-130

Re: Would a AA-130 be overkill . . . ?

PostBy: U235a4 On: Sun Jul 27, 2008 1:14 pm

net output of a AA130 is (113,000BTU water) and (97,500BTU steam).... just a FYI on your figuring
U235a4
 
Stove/Furnace Make: 1958 Axeman-Anderson
Stove/Furnace Model: 260M

Re: Would a AA-130 be overkill . . . ?

PostBy: coaledsweat On: Sun Jul 27, 2008 9:04 pm

I think it is a great choice. :)
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

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Re: Would a AA-130 be overkill . . . ?

PostBy: Yanche On: Sun Jul 27, 2008 10:09 pm

Why not do a heat loss calculation on your house? The best is ACCA manual J, 8th edition. Put "Manual J" in the search field and you will find lots of previous threads about it.
Yanche
 
Stoker Coal Boiler: Alternate Heating Systems S-130
Coal Size/Type: Anthracite Pea

Re: Would a AA-130 be overkill . . . ?

PostBy: Freddy On: Mon Jul 28, 2008 5:53 am

It might be, but it will be for me too. I'll be using the AA130 this winter in a similar sounding place. The worst that can happen, I hope, is that it burns a few % less efficient. But, that will still be more efficiently than most coal boilers.
Freddy
 
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined

Re: Would a AA-130 be overkill . . . ?

PostBy: Complete Heat On: Tue Jul 29, 2008 12:12 am

If you are in Mass you have very few options. The unit has to be ASME coded. That leaves A-A, EFM and AHS. The EFM is 214k btu. Definite overkill. The AHS and A-A are both rated at 130k BTU (the smallest ASME coded boilers available), and of the two, A-A is a better unit.

Mike
Complete Heat
 
Stove/Furnace Make: Axeman-Anderson
Stove/Furnace Model: AA-130/FHA

Re: Would a AA-130 be overkill . . . ?

PostBy: 1termite On: Tue Jul 29, 2008 7:59 am

the efm at 214k btu is at the top end which you would not run at. my 520 replaced a 150k btu oil unit and works great. my house is new and a 350 would of worked great but could not find. if anything i would over power than under. you never know what you my add on, my brother added a pool heater.
1termite
 
Stove/Furnace Make: efm
Stove/Furnace Model: df520

Re: Would a AA-130 be overkill . . . ?

PostBy: Yanche On: Tue Jul 29, 2008 10:26 am

Complete Heat wrote: The AHS and A-A are both rated at 130k BTU (the smallest ASME coded boilers available), and of the two, A-A is a better unit.

Mike
That's fighting words! :-) Care to make a list of what's better on the A-A Anthratube vs. the AHS Coalgun?
Yanche
 
Stoker Coal Boiler: Alternate Heating Systems S-130
Coal Size/Type: Anthracite Pea

Re: Would a AA-130 be overkill . . . ?

PostBy: LsFarm On: Tue Jul 29, 2008 4:06 pm

I thought that comment would raise some hackles ! :lol:

Greg L
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Re: Would a AA-130 be overkill . . . ?

PostBy: Freddy On: Tue Jul 29, 2008 7:01 pm

Yanche wrote:Care to make a list of what's better on the A-A Anthratube vs. the AHS Coalgun


Yaaaaa.... to get the AHS ASME approved it is an extra $2,000. To get auger feed on the AHS is another extra $1,500. The AHS is a homely blue box, the Axeman Anderson is a wonderful mechanical creature with exposed gears & arms & sprockets & levers, it's the coolest looking machine man has ever made!

OK, OK, skip the price difference and the visual appeal and, and, well..... the Axeman is more efficient. Over a ten year period the Axeman will use 7 to 8 pounds less coal to heat the same place. It will, I know in my gut it will. I'm going to prove it too. Just as soon as my AA wears out I'm going to buy a EFM as I want to try one of them. As soon as that wears out I'll buy an AHS and complete the study. After the AHS goes to it's grave I will write a report. Look for it right here in about 160 years. ;) I might be wrong.... actually my gut says the AHS is a tiny bit more efficient. I only think that because the design is a bit newer than the AA. I'd think they did something to make it better. It's possible that the AHS will be the one to use 7 pounds less coal. :)
Freddy
 
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined

Re: Would a AA-130 be overkill . . . ?

PostBy: LsFarm On: Tue Jul 29, 2008 8:13 pm

EnergyallStars.. I don't think you will find a smaller steam rated coal boiler. It may be more than needed,, but if it is the smallest available, there is not much selection...

What is the BTU rating of your current steam boiler?? Is your system a one pipe or two pipe design??

Greg L
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Re: Would a AA-130 be overkill . . . ?

PostBy: EnergyAllStars On: Wed Jul 30, 2008 4:10 pm

I have a single pipe system, . . . . the old "inactive" oil fired boiler is rated @ 144 BTUs. Never used it to heat the whole house since I've owned it for the past 5 years. The upstairs was converted into an apartment and had electric baseboard heat . . . .As of this spring, I took over the whole house converting it back to a single family and ripped out all the mickey mouse/landlord style/income property upgrades (basically I completely gutted it down to the studs to make sure it was done right this time). I'm in the process of re-running all of the steam pipes, valves and radiators back to the 2nd floor.

Now that you put things into perspective, it makes perfectly good sense!
EnergyAllStars
 
Stove/Furnace Make: SOON. . . Axeman-Anderson
Stove/Furnace Model: AA-130

Re: Would a AA-130 be overkill . . . ?

PostBy: LsFarm On: Thu Jul 31, 2008 5:03 am

An AA 130 should work perfect in that application.

Greg L.
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Visit Lehigh Anthracite