"Aneroid" controller for dampers on hand fired boilers

"Aneroid" controller for dampers on hand fired boilers

PostBy: dave brode On: Sat Dec 07, 2013 2:41 pm

All,

I am not sure that's the right term, but it's a device that expands with higher temps. Such a device can be used to control the doors on the ash box and at the flue on back of the boiler on mostly hand fired units. My old "Red Square" boiler had one, the device had a cast iron body, and screwed into a water port. What I'm calling the aneroid was made of brass. When it expanded, the linkage would move and open/close the doors as needed. A weight was used on the linkage for adjustment. It worked very well.

Painter's boiler looks to have one. Page 12 and 13. Pictures Of Your Boiler

I have been asked where such a device could be bought. Anyone know if these are sold for less than an arm/leg? Like a dummy, I gave the one away from my rotted up from running it at too low a temp red square. I wish that I would have kept it for a conversation piece, if nothing else.

Totally non related, but during the "we must deal with emissions" mid/late 70s, some carburetors used such a device. It was used as an altitude compensating device of a sort.

Dave
dave brode
 
Stoker Coal Boiler: Keystoker KAA-2
Hand Fed Coal Boiler: used to have a 5 section Red Square
Coal Size/Type: rice anthracite

Re: "Aneroid" controller for dampers on hand fired boilers

PostBy: WNY On: Sat Dec 07, 2013 3:46 pm

Like a bimetallic spring thing?

Anything related to this thread?
Sampson Control and Bi-Metallic Air Intake Damper question
WNY
 
Hot Air Coal Stoker Stove: Keystoker 90K, Leisure Line Hyfire I
Coal Size/Type: Rice
Stove/Furnace Make: Keystoker, LL & CoalTrol
Stove/Furnace Model: 90K, Hyfire I, VF3000 Soon

Re: "Aneroid" controller for dampers on hand fired boilers

PostBy: dave brode On: Sat Dec 07, 2013 4:40 pm

WNY,

no, the device that my old boiler had used a brass "vessel" that contained air. It would contract when cooler, expand when hotter, and this movements caused the linkage to operate.

Painter's may have a bimetallic spring, but I suspect not.

Something like this aneroid in a barometer.

http://content.answcdn.com/main/content ... aneroi.jpg

Dave
dave brode
 
Stoker Coal Boiler: Keystoker KAA-2
Hand Fed Coal Boiler: used to have a 5 section Red Square
Coal Size/Type: rice anthracite


Re: "Aneroid" controller for dampers on hand fired boilers

PostBy: Rob R. On: Sat Dec 07, 2013 4:47 pm

Dave, are you talking about a thermostatic draft control? I bought one from EFM for use on an older hand-fed boiler, worked very well.

Here is a picture of it installed on an EFM hand-fed.

View: New PagePopup
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: "Aneroid" controller for dampers on hand fired boilers

PostBy: WNY On: Sat Dec 07, 2013 4:49 pm

Got it! I knew the concept was similar. :)
WNY
 
Hot Air Coal Stoker Stove: Keystoker 90K, Leisure Line Hyfire I
Coal Size/Type: Rice
Stove/Furnace Make: Keystoker, LL & CoalTrol
Stove/Furnace Model: 90K, Hyfire I, VF3000 Soon

Re: "Aneroid" controller for dampers on hand fired boilers

PostBy: dave brode On: Sat Dec 07, 2013 5:03 pm

Rob R. wrote:Dave, are you talking about a thermostatic draft control? I bought one from EFM for use on an older hand-fed boiler, worked very well.

Here is a picture of it installed on an EFM hand-fed.


I didn't know what to call it. Looks to serve the same function. This device rotates, I take it, and pulls the door up. How much rotating force does it have?

Mine fit into a port on top, linkage sat on it, stuck out in front and in back. Chains ran down to the doors on the ash box and flue. When one opened, the other would close. Worked slick.

Thanks.
Dave
dave brode
 
Stoker Coal Boiler: Keystoker KAA-2
Hand Fed Coal Boiler: used to have a 5 section Red Square
Coal Size/Type: rice anthracite

Re: "Aneroid" controller for dampers on hand fired boilers

PostBy: Rob R. On: Sat Dec 07, 2013 5:04 pm

Ok, now I know what you are talking about...unfortunately I have no idea what it is called.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: "Aneroid" controller for dampers on hand fired boilers

PostBy: waldo lemieux On: Sat Dec 07, 2013 9:01 pm

http://theboilerman.biz/calorstat_dampe ... ontrol.htm

Here is a link to a wax filled boiler firebox damper control. The wax expands and contracts inside a hydraulic cylinder to raise and lower a draft arm. The one on my old boiler was an Ammark and worked well but it appears that they dont make them anymore . They work with no ecectricity :D

Waldo
waldo lemieux
 
Stove/Furnace Make: efm
Stove/Furnace Model: s-20

Re: "Aneroid" controller for dampers on hand fired boilers

PostBy: lsayre On: Sat Dec 07, 2013 9:26 pm

I wondered if thermal expansion wax had any application in HVAC, and there it is!
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Anthracite Pea
Other Heating: Resistance Boiler (if I ever get it fixed)

Re: "Aneroid" controller for dampers on hand fired boilers

PostBy: lsayre On: Sat Dec 07, 2013 10:01 pm

Rob R. wrote:Dave, are you talking about a thermostatic draft control? I bought one from EFM for use on an older hand-fed boiler, worked very well.

Here is a picture of it installed on an EFM hand-fed.

View: New PagePopup


Rob, is that a Samson Control? Do they work via thermal expansion wax?
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Anthracite Pea
Other Heating: Resistance Boiler (if I ever get it fixed)

Re: "Aneroid" controller for dampers on hand fired boilers

PostBy: Rob R. On: Sat Dec 07, 2013 11:09 pm

lsayre wrote:
Rob R. wrote:Dave, are you talking about a thermostatic draft control? I bought one from EFM for use on an older hand-fed boiler, worked very well.

Here is a picture of it installed on an EFM hand-fed.

View: New PagePopup


Rob, is that a Samson Control? Do they work via thermal expansion wax?


Yes.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy