K6 ? new to this . hook up and general coal boiler ?

Re: K6 ? new to this . hook up and general coal boiler ?

PostBy: LsFarm On: Wed Jul 09, 2008 6:57 pm

Sting, what you describe depends on the volume of the cold or cool water in the loops. What you describe definitely can happen,, but most of the time the water in the baseboards is not cold, but cool.. so the thermal shock is minimal if any at all. You have to look at the relative volumes of water.. older cast iron radiators hold a lot of water,, but baseboards don't..

It also depends on whether you have circulators controlling the zones, or have zone valves.. zone valves shut off the zone almost completely, a circulator will allow some gravity circulation and keep the zones warmer.

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

Re: K6 ? new to this . hook up and general coal boiler ?

PostBy: JOE.G On: Wed Jul 09, 2008 7:13 pm

I have Zone Vavles and old cast iron radiators sting what are you suggesting, I thought you are suppose to turn the oil boiler 20 to 30 deg cooler then the coal boiler. And I thought by doing that the oil boiler should not kick on, how else could you set it up so the oil boiler would kick on if need be.
JOE.G
 

Re: K6 ? new to this . hook up and general coal boiler ?

PostBy: LsFarm On: Wed Jul 09, 2008 7:27 pm

Joe, with your setup, what sting says can happen,, a zone valve opens,, a large quantity of cold water comes into the coal boiler, it can't make heat fast enough, so the water temp drops enough that the other boiler sees a 20-30* drop in water temp and fires up.

There are ways to change the setup using primary/secondary plumbing,, BUT your series setup is the simple way, and depending on your number of radiators, volumes of water etc, you may or may not see the temp drop or not..

Send my your email via PM,, I'll send you some articles on primary/secondary loops,, maybe you can figure out a way to make it work for you.

Greg L

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

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Re: K6 ? new to this . hook up and general coal boiler ?

PostBy: Sting On: Wed Jul 09, 2008 10:18 pm

or control two boilers correctly


http://www.tekmarcontrols.com/prod/261.shtml
This link is broken, either the page no longer exists or there is some other issue like a typo.


Above is only ONE control possible and not necessarily the correct one for this application. But a multi boiler control will operate the stand-by boiler at correct operating temperature - correlated to the outdoor temperatures and load requirements (not 20 or 30 degrees cold or at possible disastrous condensing temperatures) and will delay (by operator preset) the intervention of the stand by boiler, if it becomes necessary to boost the energy production in hi demand, or replace failed coal boiler operation, in the appliance loop. -- series or parallel installations.....

Image
Sting
 
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG

Re: K6 ? new to this . hook up and general coal boiler ?

PostBy: FingerLakesStoker On: Fri Jul 11, 2008 10:39 am

As far as the series connection goes between the boilers, I am looking at 55 gallons of water in the KA-6 and 27 gallons in the propane boiler which is what I am planning to use as the back up. I am on baseboard heat so that does limit the volume of water in the system. My system has 4 zones controlled by a zone controller unit. I have an indirect water heater on one of the zones and it is set for priority on the zone controller.

Mike - FLS
FingerLakesStoker
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA-6 Direct Vent

Re: K6 ? new to this . hook up and general coal boiler ?

PostBy: Sting On: Fri Jul 11, 2008 11:34 am

Does your zone controller have boiler control to signal a call for hi fire when called to produce DHW?
Sting
 
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG

Re: K6 ? new to this . hook up and general coal boiler ?

PostBy: JOE.G On: Sat Jul 12, 2008 11:03 am

LSFARM I am thinking about hooking it up parral to my current setup, Hooking it up in Series is going to be my second choice at this point I believe.
Which do you like better and why?

Sting how much does one of them controls run?
JOE.G
 

Re: K6 ? new to this . hook up and general coal boiler ?

PostBy: Sting On: Sun Jul 13, 2008 12:01 am

Sting
 
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG

Re: K6 ? new to this . hook up and general coal boiler ?

PostBy: JOE.G On: Mon Jul 21, 2008 7:56 pm

LSFARM, How does the KA 6 do in heat recovery? I have the old hot water raditaors About 12 of them on the system, plus a indirect hot water tank.

Also if I set the hi lo on my coal boiler to 180/160 what should I set the oil boiler to? 160/140 would that be hot enough to hea the house? I know that would only be a temporay setting but if I go away it may be a few days.
JOE.G
 

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