I am buying a Jensen indoor boiler and running it with "simpleist pressureized system" design. Do I need to keep return temp up or does it matter with this type of boiler?
does a conventional wood boiler with water jacket require boiler protection?
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Nofossil
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Your manufacturer has the final word, but as I understand it almost any boiler would benefit from return temperature protection. With a large storage tank, you could be supplying really cold water for a long time. Besides the potential for corrosion, cold inlet water will almost certainly give you relatively cold outlet temperature as well. With the bottom of storage at some cold temperature (say 100) you'd be much better off getting a small amount of water back to storage at 180 as opposed to a large amount at 120.
Proper inlet protection will give you usable outlet temps very quickly.
Proper inlet protection will give you usable outlet temps very quickly.
webbie
Seasoned Moderator
NF has it right. The boiler steel will not last as long if the return temp is much below 130-140.
However, these boilers were probably overbuilt in the first place....I sold them back in the 80's, and never heard of one wearing out.
However, these boilers were probably overbuilt in the first place....I sold them back in the 80's, and never heard of one wearing out.
Can you tell me anything about them, BTU's eficientcy ect? I am picking it up next week, I have not found much about the boiler although the furnace version is more plentifull. It is cheap and it will get me through till I get a gasser.
Thanks.
Thanks.
webbie
Seasoned Moderator
It's just a regular old boiler.......you can probably get parts and a manual from Preston Trading Post.
Gabe Stein (stoveguy13 here, I think) works there.
As far as BTU's, I think you have to go by the cubic feet of the firebox.
They made two sizes - the 24 and the 30 (inch wood).
Boilers like this are often rated strangely, but I would suppose the smaller one would be about 75,000 BTU total max (into the water and air) and the 30 might be 95,000.
Gabe Stein (stoveguy13 here, I think) works there.
As far as BTU's, I think you have to go by the cubic feet of the firebox.
They made two sizes - the 24 and the 30 (inch wood).
Boilers like this are often rated strangely, but I would suppose the smaller one would be about 75,000 BTU total max (into the water and air) and the 30 might be 95,000.
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