keystoker ka6 install question

keystoker ka6 install question

PostBy: kevin.m.l On: Fri May 16, 2014 1:04 pm

In the diagram supplied with my new boiler it shows the circulator on the return side, and the expansion tank off the top of the boiler all by itself. The directions specifically state "do NOT connect the tank to any other part of the heating system." So after reading thread after thread and most of the book modern hydronics, I am leaning towards ignoring the directions and putting the circulator on the supply side with tank on inlet side of circulator. Anyone have suggestions, comments or experience hooking up a ka6? (Specifically with why expansion tank is supposed to be isolated from system. )
kevin.m.l
 
Stoker Coal Boiler: keystoker ka-6

Re: keystoker ka6 install question

PostBy: Rob R. On: Fri May 16, 2014 1:40 pm

Welcome.

kevin.m.l wrote:I am leaning towards ignoring the directions and putting the circulator on the supply side with tank on inlet side of circulator.


That is perfectly fine (and preferred, depending on who you ask). :)
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: keystoker ka6 install question

PostBy: gaw On: Fri May 16, 2014 1:51 pm

I installed my own KA6 as per their instructions. It was also pretty much like the old oil burner was installed. Their system is “old school” but it works. I even re-used my old expansion tank which is just a plain old tank, no bladder; it just traps air at the top. I have had absolutely no problem with the heating system. No circulation or pressure problems.

My experience shows that their old fashioned way works but I am sure a more modern approach could be used and I am pretty sure there are many here who have done just that.
gaw
 
Stoker Coal Boiler: Keystoker KA-6
Coal Size/Type: Rice from Schuylkill County


Re: keystoker ka6 install question

PostBy: plumber On: Sat May 17, 2014 9:02 am

Keystoker needs to bring their literature into modern times. Bringing it up to the 1970's would be a huge upgrade! They're referring to using a air cushion expansion tank.
Pipe it accordingly to accepted modern practices and you'll be fine.
plumber
 
Stoker Coal Boiler: EFM 350

Re: keystoker ka6 install question

PostBy: StokerDon On: Sun May 18, 2014 10:21 am

kevin.m.l wrote:In the diagram supplied with my new boiler it shows the circulator on the return side, and the expansion tank off the top of the boiler all by itself. The directions specifically state "do NOT connect the tank to any other part of the heating system." So after reading thread after thread and most of the book modern hydronics, I am leaning towards ignoring the directions and putting the circulator on the supply side with tank on inlet side of circulator. Anyone have suggestions, comments or experience hooking up a ka6? (Specifically with why expansion tank is supposed to be isolated from system. )


Yes I would also ditch the Keystoker instructions relating to pump placement and expansion tank.

Make sure you have at least 18" of strait pipe before the air scoop. Plumb the expansion tank and the boiler fill supply into the bottom of the air scoop. an air bleed goes on top of the air scoop.

The Pump (or pumps) need to have at least a 12" strait vertical run before and after the pump. don't forget the check valve after the pump.

Like this,

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Pump away
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Pump away
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This will give you a "pump away" system. Place air bleeds at the top of each run. I would run a boiler bypass as in the Keystoker instructions.

I used a large floor mouted expansion tank. This helps to avoid PRV blowoffs in case of a temp overshoot.

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Expansion tank
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Don't forget the shuttoffs and unions like I did!

This type of settup alows all the air to bleed out of the system and with the bypass keeps the boiler at a nice even temp.

-Don
StokerDon
 
Stoker Coal Boiler: Yellow Flame "Competion Series" 3 grate boiler
Hot Air Coal Stoker Stove: Alaska Stoker1? can't figure out these dern Alaska names!!! It's a big old black one.
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood

Re: keystoker ka6 install question

PostBy: oilman On: Wed May 28, 2014 6:53 pm

I install at least 1 or 2 Keystoker boilers a month. Like the other guys said, use the info in the books you got.
We do them like Stoker Don suggested, pumping away, floor mount expansion tank etc. We don't use air scoops however we use Spirovents for air elimination. Like Don mentioned, you must have at least 18" of runway before a scoop for it to work. We rarely have that so we don't use them.
However, make sure you put the 1" by-pass in like they tell you in the instructions.
oilman
 

Re: keystoker ka6 install question

PostBy: tikigeorge On: Wed May 28, 2014 8:32 pm

My boiler was installed as the info from Keystoker. Five years now and no problems.
tikigeorge
 
Stoker Coal Boiler: Keystoker KA-6
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA-6