LsFarm wrote:Manual dampers ARE unsafe. The cheap little tension or friction springs loose tension with heat and age, the 'perfect setting' on the manual damper slips in the middle of the night... or a lump of creosote or fly ash falls on the damper and does the same...
If you have a manual damper and a warm front comes through at 3AM, you need to get up in the middle of the night to open the damper or the reduced draft will allow you to have the CO 'rolling out of every crack in the stove and baro'.
So what part of the above did you chose to not read prompting your comment: 'Greg has sited the MPD as "unsafe", but hasn't indicated what, in his opinion, makes them unsafe. " I think I clearly stated why the manual damper can be unsafe.
Then you posted manuals from wood stoves. From stoves that are at best marginal for burning coal. Vogelzang, isn't that the manufacturer that makes the cheap potbelly stoves sold at HarborFreight? 'Little Cod' What is that?? and from the wood institute. [so what?]
I'm sure if I dig deep enough that I can find documentation to support just about any viewpoint. Elvis has been documented to be alive !! Just search and you can find hours of proof.
Ending with a quote from a previous message:
"I'm glad for you that the manual damper you installed has apparently made your stove work better. But each and every chimney, chimney type, inside or outside, stove, new design or old design stove, quality of house, house location, elevation, prevailing wind, etc, etc makes each chimney and solid fuel appliance a unique situation. A properly set up barometric damper eliminates a handfull of these variables and makes the burning experience much more consistant and reliable."
Stay within the guidelines of the forum, don't post potentially dangerous information. Err on the side of safety: manually closing off the draft to a coal stove has the potential to be unsafe. A great deal of experience and expertice is needed to use a manual damper safely. This is the entire focus of my comments: I fear that a new coal burning member will try to use a manual damper and create a safety issue for them and their family.
I have spent hours exchanging PMs with new members helping them to learn how to burn coal. I have helped people that have never used a solid fuel stove of any kind or fuel. I fear that someone will get CO poisoning from the improper use of a manual damper.
Properly used by an experienced stove/furnace/boiler opperator, a manual damper CAN help fix issues with an instalation that has way too much draft. But experience and expertice are critical for the safe use of the manual damper.