KA-2 Boiler Question

KA-2 Boiler Question

PostBy: Kungur On: Tue Dec 18, 2012 6:47 pm

We were gone for 2 weeks and before we left I shut the boiler down and just used the porpane furnace set @ 52F. YEsterday when we got home I fired up the boiler but it seems like it is taking quite a long time to bring the house back up to a nice warm temp. Also the water temp is only getting to about 140F. I know it takes a while to ramp up and maybe the house really cooled down but it seems longer than normal. I did give the toker mechanism 1 turn CCW the afternoon and just a while ago I added 1 more timer pin.
Thoughts?
Thanks!
Kungur
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: K-2

Re: KA-2 Boiler Question

PostBy: LsFarm On: Tue Dec 18, 2012 7:56 pm

If the grate is fully covered with burning coal, with only an inch or so 1" of ash at the end, then your stoker is supplying full BTU's available.

It does take a while for a cold house to fully warm up. many hours in most cases.

Greg
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Re: KA-2 Boiler Question

PostBy: Rob R. On: Tue Dec 18, 2012 9:08 pm

Greg said it all. If you have a stoker full of fire you will have to wait it out. 52 is a huge setback, and it will take a while to get things back to being comfortable...especially if the K2 is closely sized to the homes heat loss.

How about firing the propane unit to help get things "back in the warm zone"?
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

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Re: KA-2 Boiler Question

PostBy: whistlenut On: Tue Dec 18, 2012 10:25 pm

Good things happen to those who wait. Remember with any solid fuel, time is your friend, if you have enough of it!
It AIN'T rocket science that your home will require a good deal of time to come up to temp, however as you know, the inverse is true when warm. I'd guess you are using nearly all the BTU's available to restore 'normal' to your home.

I recall a new boiler install two weeks ago where it took 12 hrs to warm every corner of the house. The house was at 33 degrees. No heat at all this season. The copper thieves had been there ahead of us. What a PITA!!!
A day to reconstruct, then light off the boiler. KA-6....Went home at 9 pm, back at 08:00, and the house was up to 68 degrees everywhere, even the second floor
(with no baseboard replaced yet). Burned 70 lbs of coal overnight...not bad in a 3250 sq ft house.
The boiler was on the timer when we got there in the AM, anyway. Superstor went from 50 degrees to 120 in 10 minutes. (40 Gallon).

I think you are picking up what we a re putting down....close to perfect, but slow and steady wins the race EVERY TIME!!! :idea: :!: :shock: :roll:
whistlenut
 
Stoker Coal Boiler: AA130's,260's, AHS130&260's,EFM900,GJ&VanWert
Hand Fed Coal Boiler: Franks Boiler,Itasca415,NYer130,Van Wert
Hot Air Coal Stoker Furnace: Yellow Flame
Hot Air Coal Stoker Stove: Alaska-4,Keystoker-2,
Hand Fed Coal Stove: Alaska,Gibraltor,Keystone,Vc Vigilant 2
Hand Fed Coal Furnace: Van Wert, NYer's, Ford,Jensen.
Coal Size/Type: Rice,Buck,Pea,Nut&Stove
Other Heating: Oil HWBB

Re: KA-2 Boiler Question

PostBy: stovepipemike On: Wed Dec 19, 2012 9:14 am

Not only that,just remember that the boiler has got to go from 52 deg ambient to some desireable heat transfer temperature,,,,,,,and that all has to happen before it begins to heat the house. Mike
stovepipemike
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KAA-2

Re: KA-2 Boiler Question

PostBy: Kungur On: Wed Dec 19, 2012 9:15 am

Thanks for your replies. The house is warmed up. But I think I may be tring to run the KA-2 with too small of a bed of coals. I am going to gradually increase it.
Kungur
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: K-2

Re: KA-2 Boiler Question

PostBy: whistlenut On: Wed Dec 19, 2012 10:12 am

Don't be a 'Coal Scrooge', however we do have only about 400 years of supply in NEPA........Live LARGE; screw in that feed screw...crank the air...let her 'run free'. ....all 76K of it!
whistlenut
 
Stoker Coal Boiler: AA130's,260's, AHS130&260's,EFM900,GJ&VanWert
Hand Fed Coal Boiler: Franks Boiler,Itasca415,NYer130,Van Wert
Hot Air Coal Stoker Furnace: Yellow Flame
Hot Air Coal Stoker Stove: Alaska-4,Keystoker-2,
Hand Fed Coal Stove: Alaska,Gibraltor,Keystone,Vc Vigilant 2
Hand Fed Coal Furnace: Van Wert, NYer's, Ford,Jensen.
Coal Size/Type: Rice,Buck,Pea,Nut&Stove
Other Heating: Oil HWBB

Re: KA-2 Boiler Question

PostBy: steamup On: Wed Dec 19, 2012 5:15 pm

With my K-6, from cold start, it takes about 1 hour just to get the boiler up to temperature before it has enough heat to send out.

Don't forget when stepping up from night setback, you are heating not only the air in the house, but the entire mass of the house and contents inside that insulation envelope.

It will take time. On a higher efficient house, the mass of the house compared to the heating system size is much greater than with a less efficient house. Say if you have a house that takes 100,000 btuh calculated load and it has the 15% pickup figured in, that is approx. 15,000 btuh to help ramp up. If you have a house that only takes 50,000 btuh and you have the 15% figured in, that is only approx. 7500 btuh to ramp up.

A small boiler like the K-2 will take a while to "git-r-done".
steamup
 
Stoker Coal Boiler: Axeman-Anderson AA-130, Keystoker K-6
Hand Fed Coal Boiler: HS Tarm 502 Wood/Coal/Oil
Coal Size/Type: pea, buck, rice

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