This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment AF wrote: Most of the pianos in this country are over 80 years old=20 Really? Says who? I know some days it seems that way, but I don't = think that is true at all. and have acclimatized to a RH of 65%.=20 Really? Says who? Where do you get such data from? Most environments = do not have fluctuating relative humidity levels? Ideally, the installation of a climate control system should maintain = that 65% to avoid any damage.=20 Why would a slightly drier environment cause any damage? All the wood = in that piano grew for 100 to several hundred years at something like = 50% MC (what is the moisture content of green wood?). Somebody dried it = out after they cut the darn thing down - didn't do much damage then - = why would a small change in MC damage it now? IMHO, hesitating to create = a stable 42% RH (or there abouts) environment for an old piano is = nonsense. The Dampp Chaser literature that I have does not state whether you can = set it to maintain existing conditions, and am therefore very reluctant = to recommend the system for old instruments; new ones, fine. New piano, old piano, same difference, IMHO. Terry Farrell ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/7b/e5/94/63/attachment.htm ---------------------- multipart/alternative attachment--
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