Central Boiler FORGE 3500 Outdoor Coal Boiler

Post Reply
 
User avatar
Lightning
Site Moderator
Posts: 14659
Joined: Wed. Nov. 16, 2011 9:51 am
Location: Olean, NY
Stoker Coal Boiler: Modified AA 130
Coal Size/Type: Pea Size - Anthracite

Post by Lightning » Thu. Dec. 06, 2018 3:05 pm

Qtown1835 wrote:
Thu. Dec. 06, 2018 2:53 pm
Maybe throw a 85kbtu modine in the garage just for good measure and would make for a good dump zone.
It does need somewhere to send heat. It's a huge boiler with hardly any heat load on it.


 
franco b
Site Moderator
Posts: 11416
Joined: Wed. Nov. 05, 2008 5:11 pm
Location: Kent CT
Hand Fed Coal Stove: V ermont Castings 2310, Franco Belge 262
Baseburners & Antiques: Glenwood Modern Oak 114
Coal Size/Type: nut and pea

Post by franco b » Thu. Dec. 06, 2018 4:01 pm

How hard would it be to decrease the size of the fire bed?

Perhaps also increase the water temp to 200?

 
User avatar
Lightning
Site Moderator
Posts: 14659
Joined: Wed. Nov. 16, 2011 9:51 am
Location: Olean, NY
Stoker Coal Boiler: Modified AA 130
Coal Size/Type: Pea Size - Anthracite

Post by Lightning » Thu. Dec. 06, 2018 5:45 pm

franco b wrote:
Thu. Dec. 06, 2018 4:01 pm
How hard would it be to decrease the size of the fire bed?

Perhaps also increase the water temp to 200?
Those are both thoughts that have crossed my mind Richard. I guess it would just take a plate of steel, cut to the right dimensions and then sealed in place with fiberglass. Seems easy enough.

The controller will not let the boiler go over 200 degrees, otherwise it seals the combustion air completely until it cools down. If cool down takes too long, the fire will suffocate. The high limit is currently at 185 but occasionally the pulses will over shoot it up to 200. It just depends on how frisky the fire is feeling.

Can you imagine a Peterbuilt tractor pulling a garden wagon in first gear? :what:

 
User avatar
Lightning
Site Moderator
Posts: 14659
Joined: Wed. Nov. 16, 2011 9:51 am
Location: Olean, NY
Stoker Coal Boiler: Modified AA 130
Coal Size/Type: Pea Size - Anthracite

Post by Lightning » Thu. Dec. 06, 2018 9:07 pm

Case in point of this "friskyness" I speak of. Keep in mind the heat load is constant and steady. Now look at this graph between midnight and 6am. The water temp didn't wanna fall compared to the right side of the graph where you see steady slopes of water temp, then it firing to bring it back up. Between midnight and 6am it was really thinkin hard about over shooting just from the pulses. Notice how short the combustion blower ran to bring it up to high limit just prior. You can just tell the fire was chompin at the bit to produce heat. He tends the boiler around 6am and 6pm which is quite pronounced in the graph also. How cool is that? I love this thing haha. Can I get one of these controllers for my AA next year?

Attachments

Screenshot_20181206-205509.jpg
.JPG | 163.1KB | Screenshot_20181206-205509.jpg

 
User avatar
lsayre
Member
Posts: 21781
Joined: Wed. Nov. 23, 2005 9:17 pm
Location: Ohio
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Lehigh Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW), ComfortMax 75

Post by lsayre » Fri. Dec. 07, 2018 4:23 am

Lightning wrote:
Thu. Dec. 06, 2018 9:07 pm
Can I get one of these controllers for my AA next year?
My first thought is that since the AA/AHS design sips coal at idle, and this control will not let it idle, expect to burn more coal than you should. You are putting the cart ahead of the horse. You only need to fix a problem when you definitively conclude that you have a problem.

 
User avatar
Lightning
Site Moderator
Posts: 14659
Joined: Wed. Nov. 16, 2011 9:51 am
Location: Olean, NY
Stoker Coal Boiler: Modified AA 130
Coal Size/Type: Pea Size - Anthracite

Post by Lightning » Fri. Dec. 07, 2018 10:31 am

I know lol. It was just a whim. So the boiler over shot last night and flat lined the fire. He had to throw wood in to rekindle it.

Attachments

Screenshot_20181207-102848.jpg
.JPG | 184KB | Screenshot_20181207-102848.jpg

 
User avatar
Lightning
Site Moderator
Posts: 14659
Joined: Wed. Nov. 16, 2011 9:51 am
Location: Olean, NY
Stoker Coal Boiler: Modified AA 130
Coal Size/Type: Pea Size - Anthracite

Post by Lightning » Fri. Dec. 07, 2018 10:35 am

This might be an unorthodox solution, but what about just setting a modine in the house somewhere for now? He might be able to use it later to heat a garage or something.


 
Olllotj
Member
Posts: 558
Joined: Thu. Sep. 04, 2014 10:01 am
Location: Western NY 14141
Stoker Coal Boiler: Keystoker KB-8
Coal Size/Type: Buckwheat
Other Heating: Utica Propane Hot Water

Post by Olllotj » Fri. Dec. 07, 2018 10:50 am

Why a Modine? (unless he already owns it) It will be crazy loud in a living space and it's no easier to plumb than a radiator.

I think he should start saving for a fairly large size plumbing project.

 
CapeCoaler
Member
Posts: 6515
Joined: Sun. Feb. 10, 2008 3:48 pm
Location: Cape Cod, MA
Stoker Coal Boiler: want AA130
Hand Fed Coal Stove: DS Machine BS#4, Harman MKII, Hitzer 503,...
Coal Size/Type: Pea/Nut/Stove

Post by CapeCoaler » Fri. Dec. 07, 2018 11:26 am

Couple of cast iron radiators...
Get some radiant mass in an uninsulated block house...

 
User avatar
Lightning
Site Moderator
Posts: 14659
Joined: Wed. Nov. 16, 2011 9:51 am
Location: Olean, NY
Stoker Coal Boiler: Modified AA 130
Coal Size/Type: Pea Size - Anthracite

Post by Lightning » Fri. Dec. 07, 2018 11:32 am

Okay, thanks fellas.

 
User avatar
McGiever
Member
Posts: 10130
Joined: Sun. May. 02, 2010 11:26 pm
Location: Junction of PA-OH-WV
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hand Fed Coal Boiler: BUCKET A DAY water heater
Hand Fed Coal Stove: Warm Morning 414A
Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
Other Heating: Ground Source Heat Pump and some Solar

Post by McGiever » Fri. Dec. 07, 2018 11:41 am

Does the house stay warm?

It overshot, because it needs more rads???? Help me understand this...did he open all the windows as the temps rose?
If he wants a dump zone use his baseboards till better comes.

Details are fragmented and not clear enough to give good advice from afar.
Even then, whom is able to execute advice given...

Let's not forget this a 350K solid fuel boiler w/ tiny load and even tinier rads...

 
User avatar
Lightning
Site Moderator
Posts: 14659
Joined: Wed. Nov. 16, 2011 9:51 am
Location: Olean, NY
Stoker Coal Boiler: Modified AA 130
Coal Size/Type: Pea Size - Anthracite

Post by Lightning » Fri. Dec. 07, 2018 12:53 pm

I've explained it all partner. One loop, out the boiler, thru the house, back into the boiler. 90 ft of baseboard on constant circulation. No primary, secondary loop, no dump zone, that's it... The house isn't warm enough and the boiler is hardly idling. The loop isn't enough heat load to do much of anything.

 
User avatar
Rob R.
Site Moderator
Posts: 17981
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. » Fri. Dec. 07, 2018 1:11 pm

I hope he has some funds available to fix this, b/c it is not going to be cheap. I really wish he had stopped by this forum and asked a few questions before buying this huge & expensive boiler that is not needed. A much smaller stoker boiler setup in a shed would heat that house easily, and there would have been enough money leftover to split the baseboard loop in the house (90' is too long for 3/4"), and add some radiation where needed.

Since it seems he is stuck with the Central boiler for this winter, I would focus on some piping changes in the house.

 
franco b
Site Moderator
Posts: 11416
Joined: Wed. Nov. 05, 2008 5:11 pm
Location: Kent CT
Hand Fed Coal Stove: V ermont Castings 2310, Franco Belge 262
Baseburners & Antiques: Glenwood Modern Oak 114
Coal Size/Type: nut and pea

Post by franco b » Fri. Dec. 07, 2018 1:26 pm

What would it take to lessen the heat loss of the house? Long term that seems necessary anyway. Pictures outside and some inside might help to judge costs.

 
User avatar
lsayre
Member
Posts: 21781
Joined: Wed. Nov. 23, 2005 9:17 pm
Location: Ohio
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Lehigh Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW), ComfortMax 75

Post by lsayre » Fri. Dec. 07, 2018 1:44 pm

As I understand it, the boilers flow through the homes HWB's never stops, whether or not the home needs the heat, and this is the reason why the windows are left open when it's warm outside. The T-Stat is set to its highest setting in order to call for heat 100% of the time so the loop always circulates and thereby doesn't ever freeze anywhere. Is this correct?


Post Reply

Return to “Hand Fired Coal Boilers Using Anthracite”