homemade controll box for my kaa-2 boiler

homemade controll box for my kaa-2 boiler

PostBy: 1975gt750 On: Tue Jan 08, 2008 1:29 pm

here is the homemade controll box for my kaa-2 boiler that i made do take three thermostats and convert it to one wire to my coal boiler aquastat. now when each zone calls for heat it will start to stoke coal as soon as the thermostat calls for heat. the previous way i had it hooked was i was just using the high and low limits of the aquastat had a 40 minute lag time. this seems to have cut down the lag time to about 10 minutes.
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Last edited by 1975gt750 on Tue Jan 08, 2008 2:07 pm, edited 1 time in total.
1975gt750
 
Stoker Coal Boiler: keystoker kaa-2
Coal Size/Type: rice coal / blaschak
Other Heating: pensotti oil boiler with riello 40 burner
Stove/Furnace Make: keystoker
Stove/Furnace Model: kaa-2

Re: homemade controll box for my kaa-2 boiler

PostBy: europachris On: Tue Jan 08, 2008 1:48 pm

Does the Keystoker aquastat still shut off the stoker at the high limit setting even if a zone thermostat is still calling for heat?

Nice looking setup, BTW!
europachris
 
Stove/Furnace Make: EFM 350/Iron Fireman
Stove/Furnace Model: Custom bituminous burner

Re: homemade controll box for my kaa-2 boiler

PostBy: 1975gt750 On: Tue Jan 08, 2008 2:04 pm

yes it does. as soon as the boiler temps hits 180 it shuts down the stoker until the temp drops below 180 and the demand for heat is there.
1975gt750
 
Stoker Coal Boiler: keystoker kaa-2
Coal Size/Type: rice coal / blaschak
Other Heating: pensotti oil boiler with riello 40 burner
Stove/Furnace Make: keystoker
Stove/Furnace Model: kaa-2

Visit Lehigh Anthracite

Re: homemade controll box for my kaa-2 boiler

PostBy: coaledsweat On: Tue Jan 08, 2008 2:23 pm

They usually will fire the fan and or stoker once the temp drops below the high limit on a call for heat and stop when the call drops. Once the low switch gets hit, it will run to the high switch and stop. Not sure how the Keystoker is, but most controls work in this fashion.
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Re: homemade controll box for my kaa-2 boiler

PostBy: 1975gt750 On: Tue Jan 08, 2008 3:49 pm

keystoker runs the combustion blower 24-7 aquasta just controls the stoker
1975gt750
 
Stoker Coal Boiler: keystoker kaa-2
Coal Size/Type: rice coal / blaschak
Other Heating: pensotti oil boiler with riello 40 burner
Stove/Furnace Make: keystoker
Stove/Furnace Model: kaa-2

Visit Lehigh Anthracite