Question about Surdiac damper/thermostat

Question about Surdiac damper/thermostat

PostBy: ramblerboy2 On: Fri Oct 12, 2012 7:12 pm

I did a search but can't find the answer. My MCK508 Surdiac stove damper does not fully close. When at it's lowest setting the damper stays open slightly. When I turn the knob up to higher settings the damper opens wider. Nothing looks bent. Is this normal? I'm hoping to get this stove fired up for the first time this winter, and if the damper needs to close fully I would like to fix it before I try to use the stove.
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Damper when thermostat is set to 0
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ramblerboy2
 
Hand Fed Coal Stove: Surdiac MCK 508
Other Heating: Embassy Ambassador BMS natural gas boiler

Re: Question about Surdiac damper/thermostat

PostBy: SMITTY On: Fri Oct 12, 2012 7:22 pm

I don't know anything about these units ... but just a guess that it's probably not designed to shut completely, due to the possible risk of CO escaping with no air coming in and a hot fire burning.

Like I said though - just a guess.
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler

Re: Question about Surdiac damper/thermostat

PostBy: Bud63 On: Fri Oct 12, 2012 7:30 pm

For information and parts for a Surdiac coal stove try myersfurniturepa.com and click on the Surdiac coal stove accessories link.
Bud63
 
Hand Fed Coal Stove: Surdiac 715
Coal Size/Type: Pea

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Re: Question about Surdiac damper/thermostat

PostBy: SteveZee On: Sat Oct 13, 2012 8:54 am

I would agree with what Smitty said about that being a fail safe to not cut off completely and put out the fire?

Also is it adjustable as in could you adjust it to close fully if you wanted too? Not saying to do this, just asking if that's possible. If it's not, then they did it for a reason as in having a minimum setting to maintain a fire. Looking at the pix, it seems like you could adjust it to close completely. If the stove is very air tight, then they left that slightly open to maintain a minimum fire without choking it out.
SteveZee
 
Hand Fed Coal Stove: Glenwood Modern Oak 116 & Glenwood 208 C Range

Re: Question about Surdiac damper/thermostat

PostBy: franco b On: Sat Oct 13, 2012 9:06 am

With a little heat in the stove I believe it will close right up.
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: Question about Surdiac damper/thermostat

PostBy: ramblerboy2 On: Sat Oct 13, 2012 9:58 am

Thanks folks. I had wondered if maybe some heat would make it close the rest of the way. I don't think it can be adjusted any further closed than it is now, the screw is fully extended. I appreciate your help with this, I'd worried I could end up with an overfired stove if the damper failed to close more completely.
ramblerboy2
 
Hand Fed Coal Stove: Surdiac MCK 508
Other Heating: Embassy Ambassador BMS natural gas boiler

Re: Question about Surdiac damper/thermostat

PostBy: SteveZee On: Sat Oct 13, 2012 12:16 pm

franco b wrote:With a little heat in the stove I believe it will close right up.


Good call Richard, That makes sense.
SteveZee
 
Hand Fed Coal Stove: Glenwood Modern Oak 116 & Glenwood 208 C Range

Re: Question about Surdiac damper/thermostat

PostBy: just peter On: Sat Oct 13, 2012 1:27 pm

Hello my friends om the other side of the big pond.

The small gap is suposed to be.
According the manual of my new Efel Bastogne :D , should it be 5mm. (0.2")open when the stove is cold.
For adjusting bend it till its ok.

with regards Peter.
just peter
 
Hand Fed Coal Stove: Weso 225 C3, unknown Altan
Coal Size/Type: bituminous coal,
Stove/Furnace Make: unknown, Weso
Stove/Furnace Model: Altan, 225C tile stove

Re: Question about Surdiac damper/thermostat

PostBy: ramblerboy2 On: Sat Oct 13, 2012 10:41 pm

I had thought to dip the bulb into hot water to see if it made the damper close more just to check on this. I'll give it a measure tomorrow.

I'm still amazed I found this stove, unused since purchase in 1979 or 1980. The couple who owned it had a larger Surdiac in their living room, and bought this little one to install in their walk-out basement. Then they never installed it. The stove just sat in the (thankfully dry) basement with a heavy horse blanket over it for over thirty years.

Looking forward to getting this hooked up soon.

Thanks for the help!
Josh
ramblerboy2
 
Hand Fed Coal Stove: Surdiac MCK 508
Other Heating: Embassy Ambassador BMS natural gas boiler

Re: Question about Surdiac damper/thermostat

PostBy: freetown fred On: Sat Oct 13, 2012 10:44 pm

Keep us posted Josh. :)
freetown fred
 
Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut/Stove mix

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