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Author Topic: Boiler/Jacket stove, without water connections?  (Read 3022 times)
charlieb
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« on: August 17, 2010, 11:43:10 PM »

Does anyone know if it's safe/sensible to use a stove with wraparound boiler without any water in the boiler (ie as a room heater only).    I'm sure I've read somewhere that you can fill the boilers with sand...?     I'm looking at getting a stove now for heating a big space, but might want to connect to hot water/rads at some point in the future.  Charnwood CW50B  and Hunter Heralds are two I'm looking at.   Thank,
Charlie
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Baz
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« Reply #1 on: August 18, 2010, 12:09:44 AM »

It is possible that the boiler will be damaged by overheating as it would be designed to never go above 100c with water in it.
Better to talk to the mfr about a non boiler model that can take a sensible retrofit boiler later. Some will offer a crude tank rather than a decent wrap around as the boiler addition which is likely to be inefficient.
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Stuart
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« Reply #2 on: August 18, 2010, 12:30:47 AM »

Running a boiler stove dry will buckle it as the inner part and outer part will heat at different rates, and will be different thicknesses.
As Baz says you can retro fit a boiler to some.
It depends on how much heat you want to end up in the water or in the room, a retro fit will never give you as much as a purpose built boiler.

if its just a temporary solution you could build one?  Grin
http://www.navitron.org.uk/forum/index.php/topic,9125.0.html

the hunter Herald 8 and 14 have a wrap round or clip in boiler option maybe give them a ring?

I have a wrap round Herald 8 and can confirm most of the heat goes into the water, probably no good if your wanting to heat a big room?

Stuart
« Last Edit: August 18, 2010, 12:50:56 AM by Stuart » Logged

8kw woodburner, Big piles of wood, 20 tube solar panel, custom tanks, back up gas boiler, North walls internally insulated
1968 landy that runs on anything and a currently wild meadow garden.

Nr. Tow Law
tony.
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« Reply #3 on: August 18, 2010, 06:26:35 PM »

do you not fill the water boiler with sand if you have no water connected?

tony
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Baz
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« Reply #4 on: August 18, 2010, 06:28:47 PM »

This is sometimes done IF you never want to use it as a biler again.
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charlieb
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« Reply #5 on: August 23, 2010, 07:51:25 PM »

Thanks for the advice guys. There are some cheap good-brand boiler stoves about on ebay, but it sounds like I'll be better to get a non-boiler one for now (two other fireplaces to move it to when/if I do finally plumb one in).
C
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