Coal Boiler to Oil Boiler Do Want the Circulator to Run Cons
Does't running the circultaor all the time make the water in teh coal boiler cool off faster then if it just sat there? I understand that when there is a call for heat it needs to run but even when there is not? I am not concerned about the electric bill just the caol useage.
- stoker-man
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- Location: Lehigh Valley, PA
- Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
- Coal Size/Type: Anthracite/Chestnut
- Other Heating: Hearthstone wood stove
I would say Yes, kind of like stirring coffee. It takes several hours to drop 10 degrees though, dependent, of course, upon the temperature of the air going through the boiler and up the chimney.
Hey could you burn wood until Dec/Jan and ship me your Kaa2? Ill ship you mine when it comes in. You would do that for a fellow form member, right ?AdkCoal wrote:I have the exact setup in my house that you are describing, only right now I have a wood boiler in the system instead of a coal boiler. I run the circulator between the two boilers continuously and have had good luck with it. The impact on my electric bill is not all that significant. I am replacing the Wood Boiler with a Keystoker unit which I orderd in April and was delieverd in June. Been busy with other projects and am now just installing the Keystoker. Any one want to buy a used wood boiler.
The circulator that moves the water between the two boilers is located near my oil burner and my house has 2 zones. How would I wire this so the circulator that moves the water between the two boilers comes on when either of the zones calls for heat?
- stoker-man
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- Posts: 2071
- Joined: Mon. Nov. 19, 2007 9:33 pm
- Location: Lehigh Valley, PA
- Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
- Coal Size/Type: Anthracite/Chestnut
- Other Heating: Hearthstone wood stove
The L6006C is a strap-on aquastat.
The 4006 is well mounted. You may want to check because I believe they come in a strap mounted version also. I have a dedicated circulator pump to keep the oil unit up to temp. Mainly because my DHW coil is in the oil unit.
I was originally concerned about running the circulator between my KAA-2 and my oil burner on a continuous basis. Since I have to run the pipes between the two boilers the full length of my house I have discovered that the exposed pipes dump heat into the house on a continuous basis. Not alot of heat but just enough to keep the house nice and warm at a steady pace. I have not purchased my data collection items yet so I am not sure how often the zone ciculators are actually calling for heat.
My two units are about 30 feet apart. My basement jumped to 82 degrees when I started running my system. I had to insulate all of the interconnect pipe between the boilers to get the heat loss under control. Now my basement/garage stays a nice 60 degrees.
- coalkirk
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- Joined: Wed. May. 17, 2006 8:12 pm
- Location: Forest Hill MD
- Stoker Coal Boiler: 1981 EFM DF520 retired
- Hand Fed Coal Stove: Jotul 507 on standby
- Coal Size/Type: Lehigh anthracite/rice coal
My coal and oil boiler are about 50' apart. I run the circulator between them constantly. There is a nice warm section of the floor down the center of my family room and through the kitchen from the 1 1/4" pipes below carrying the water. I don't consider it heat loss as it's all going in the house.AdkCoal wrote:I was originally concerned about running the circulator between my KAA-2 and my oil burner on a continuous basis. Since I have to run the pipes between the two boilers the full length of my house I have discovered that the exposed pipes dump heat into the house on a continuous basis. Not alot of heat but just enough to keep the house nice and warm at a steady pace.