adding fire bricks

adding fire bricks

PostBy: wrenchnhand On: Wed Dec 05, 2012 7:07 pm

I have a harmon sf160 boiler. thinking of adding an extra row of fire bricks. would it help with heat distribution or waste of time? would like to make fire box deeper. I already am running it roughly 4inchs higher than fire factory fire brick now. any ideas if it would help?
wrenchnhand
 
Hand Fed Coal Boiler: hand fed wood/coal boiler
Stove/Furnace Make: harmon
Stove/Furnace Model: sf160

Re: adding fire bricks

PostBy: Jaeger On: Sat Dec 08, 2012 6:16 pm

Not sure if I'd add another full set of vertical firebrick. It might bring your heat too close to the air tubes in top of the boiler.

Not to mention you might have trouble filling it without it running out the door.

I have though of adding a horizontal row on top of the existing firebrick to raise my level be 4", but I'm getting more than 12 hrs between fills. I'd caution trying to get it too deep in the firebox.

Jaeger
Jaeger
 
Stove/Furnace Make: Harman
Stove/Furnace Model: Trident Boiler model SF360

Re: adding fire bricks

PostBy: wrenchnhand On: Sat Dec 08, 2012 8:57 pm

i am only hitting 12 to 14hr burns using mammoth nut. that seems to be the best that i have burned in the last three yrs. was just wondering, the only tubes are dhw and those are being used to heat concrete pad in shop. there is an inch between those and main water tank. thank you for the reply.
wrenchnhand
 
Hand Fed Coal Boiler: hand fed wood/coal boiler
Stove/Furnace Make: harmon
Stove/Furnace Model: sf160

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Re: adding fire bricks

PostBy: Jaeger On: Sun Dec 09, 2012 9:45 pm

That's a good burn time!

With these warm temps we've been having (40's) I'm going 14hrs +/-. Still might get too hot near the top for the stove.

What do you have you thermostat set on? I run mine at 160 deg and it seems to be the sweet spot.

Good luck!

Jaeger
Jaeger
 
Stove/Furnace Make: Harman
Stove/Furnace Model: Trident Boiler model SF360

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