How to identify a baseheater

How to identify a baseheater

PostBy: Den034071 On: Tue Apr 10, 2012 12:59 pm

Can you guys help me how to identify a Base Heater. Previous forum pictures have not helped me. Anyone have a closeup picture of lever-gadgets that puts stove to base heating mode. Is there a lever on top or bottom of back pipe? Can you take top off back pipe? What should you see? Or do you take back pipe off stove and see what? I go to auctions and seen some stoves but was lost as to what they were. I'd love to get one and do a restoration. I have a 900 sq ft ranch (with bedrooms closed) what stove with a nice amount of MICA windows would you recommend? We like looking at the fire. I have better than average windows & insulation. Please reply, Den034071
Den034071
 
Hand Fed Coal Stove: Hitzer, 3095

Re: How to identify a baseheater

PostBy: LsFarm On: Tue Apr 10, 2012 4:23 pm

A base heater usually has a pair of openings or doorways in the back wall of the firebox, just above the firepot. There will be a door that is controled by an outside lever that closes off one doorway, this makes all the fire's hot exhaust gasses have to travel through the other doorway.

On the back of the stove will be a box-like chamber that the two doorways open into.. the doorway with the door, when the door is OPEN will exhaust directly to the exhaust port on the back of the stove. This means the hot exhaust gasses bypass the rear box, and go directly to the flue/chimney.
The other doorway, which does NOT have a door to close it off, opens to a passageway that goes down the back of the stove, through the base of the stove, under the ashpan compartment, then back up the other passageway in the rear box, then out the exhaust to the flue/chimney.

So the easiest way to see if a stove is a baseburner is to see if there is a box on the back of the stove, with an exhaust on the back of the box.
Then check to see if under the floor of the ashpan compartment there is another compartment, usually a few inched deep, and usually there is a small
cleanout door somewhere in this base compartment..

A quick note: if the stove has the narrow, tapered 'waist' and you can see the tapered round 'funnel' shape of the firebox, and the exhaust comes out of the top of the stove,, it is NOT a baseburner..

Greg L
IMG_1412.JPG
(130.97 KiB) Viewed 20 times
View: New PagePopup • Select:BBCode
The opening on the right has a door [now open in the pic], the lever to control the door is on the right outside rear corner of the stove.
[nepathumb]34530[/nepathumb]

IMG_1396.JPG
(145.08 KiB) Viewed 21 times
View: New PagePopup • Select:BBCode
You can see the lever that closes the baseburner bypass door just past the mica window doors. it is the upper lever, the bottom lever is a push-pull knob to control a draft bypass opening below the firepot's top rim.
[nepathumb]34531[/nepathumb]
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Re: How to identify a baseheater

PostBy: Den034071 On: Tue Apr 10, 2012 9:08 pm

LS Farm thank you
Den034071
 
Hand Fed Coal Stove: Hitzer, 3095

Visit Hitzer Stoves

Re: How to identify a baseheater

PostBy: BigBarney On: Thu Apr 12, 2012 11:02 am

You did a fine job of explaining how these stoves work,but I still have a

question on the difference of a base heater and a base burner. I thought

that a base burner directed the smoke and unburned gases below the ash

pan and completed the burn in the lower chamber,usually used with

bituminous coal to burn the volatile gases.

Is what you describe a base heater where the hot gases can remain in

contact with more heat exchange surface to extract the most heat

possible from the fuel? And not a base burner ?

Are these two type referred to as the same in a lot posted information?



Thank You, BigBarney
BigBarney
 

Re: How to identify a baseheater

PostBy: nortcan On: Thu Apr 12, 2012 1:58 pm

Hi, the term base burner/heater is mainly to desing the long path for the gasses before exiting the stove as said by L.S. so the heat is send in the house instead of to directly in the chimney.
Heater reffer to a stove having some device like a plate to cover a part of the grate and an upper air inlet port. The base heater were supposed to burn wood more efficiency than the other models. But burning wood cleanly needs much more than that, just take a look at the new EPA wood stoves.
nortcan
 
Stove/Furnace Make: Stuart,Peterson/ Grander
Stove/Furnace Model: Sunnyside/ Golden Bride

Re: How to identify a baseheater

PostBy: SteveZee On: Thu Apr 12, 2012 3:59 pm

Barney,

A baseheater has a double bottom under the ash pit. The exhaust is diredted by a valve and chamber, circulates through this and heats that bottom before exiting. (longer flame path) as Greg and Pierre have both stated.

A Base burner is a simpler version of the same thing. They have a "floating" or isolated firepot (from the surounding walls) with a slotted ring on top. Instead of the valve and passage to redirect the gasses, it uses a Pipe damper in the collar between the back pipe and stove body. When this is closed, it forces the rising gases down through the slots in that ring above the firepot and down around the ash pit (double walled) then up and out the back pipe. It does the same thing with less parts and doesn't have the chamber and valve in back. It looks instead, like a cylinder stove with indirect back pipe except that the damper is in the coller between the stove and back pipe versus in the divided back pipe itself. Hope that explains it for you.
SteveZee
 
Hand Fed Coal Stove: Glenwood Modern Oak 116 & Glenwood 208 C Range

Re: How to identify a baseheater

PostBy: LsFarm On: Fri Apr 13, 2012 2:22 am

Here are a few links to Baseburner/base heater threads here on the forum

Art Garland BaseBurner "Double Heater"

Barney: here is a thread showing a really good bituminous burner, it has the 'hot blast' heated air ring for extra heated air over the fire to burn the
volitiles from Bituminous coal.:
I thought I would share. Hot Blast #153 Restoration


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: How to identify a baseheater

PostBy: PC 12-47E On: Fri Apr 13, 2012 6:28 am

Tis is the fire pot in a Fuller & Warren Base Burner from circa 1910. The Stove model is a "Art Stewart # 14."

If the stove is in Base Burner mode the burned coal gas exits down through the cast iron grill at the top of the fire pot ( see picture ). The the hot burned coal gas then travels down and around the suspended fire pot to a chamber that surrounds the ash pan. Then the the exhaust travels up the back pipe and out the flue.

Eddie
Attachments
DSC00558.JPG
(140.08 KiB) Viewed 14 times
View: New PagePopup • Select:BBCode
[nepathumb]34579[/nepathumb]
PC 12-47E
 
Hand Fed Coal Stove: Estate Heatrola, Jotul 507

Re: How to identify a baseheater

PostBy: Coalfire On: Fri Apr 13, 2012 7:59 am

So a base burner is simpler and more efficient?


Eric
Coalfire
 
Hand Fed Coal Stove: DS Machine 96K btu Circulator
Coal Size/Type: Nut

Re: How to identify a baseheater

PostBy: franco b On: Fri Apr 13, 2012 8:49 am

It is more efficient because the flue gas descending around the suspended fire pot helps to keep the combustion chamber hotter, and by utilizing the area below the fire pot as additional heat exchange area the flue temperature is lower.
franco b
 
Hand Fed Coal Stove: V ermont Castings 2310, Franco Belge 262
Baseburners & Antiques: Glenwood Modern Oak 114
Coal Size/Type: nut and pea

Re: How to identify a baseheater

PostBy: SteveZee On: Fri Apr 13, 2012 11:40 am

They are both pretty efficient Coalfire but as Franco stated the burner does it with less parts and in a simpler manner probably most efficient of all, but is exclusively an anthracite burner.
The Base Heaters are usually bigger stoves and are generally dual fuel capable (wood or coal). They were the top of the line in their day because they were fancier most times and had more parts, bells and whistles.
SteveZee
 
Hand Fed Coal Stove: Glenwood Modern Oak 116 & Glenwood 208 C Range

Visit Hitzer Stoves