No sweat Dave. We all read posts like the recent one on Petroff non-removable keyslips on uprights and then ask well, how the heck can you get the action out if the keyslip is permanent? I do it also. Anyway, cost? Geez, not wanting to sound snippy or anything, but you can do that as easily as I. Most likely even more easily because my wife pays the bills and I would need to search endlessly to find our electric rate. But in all honesty, it only runs about 80% of the time during the highest humidity we encounter - not every day. I can't imagine it is a large cost either way. IMHO, I would favor a bottom cover (with fewer rods) because I think the additional environmental isolation would help maintain a more constant temp./RH than just the rods. I guess what I'm trying to say is that I would weight what I though was best for the piano over the cost. Did I mention my really, really nice Boston GP-178 is for sale? Terry Farrell ----- Original Message ----- From: "David Skolnik" <davidskolnik@optonline.net> To: "Pianotech" <pianotech@ptg.org> Sent: Tuesday, June 22, 2004 9:14 AM Subject: Re: Dampp-Chaser recommendations > Terry > On behalf of my brain, I'd like to apologize. I don't know what it was > thinking. Not until I read "five little rods", did I realize that I, er, > it was visualizing 190 watts coming from one single bar, or at least > concentrated at one point. And, earlier, with regard to my concerns about > mildew, you indicated that you are only running the dehumidifier on your > piano. I'll try to be more careful. One more thing...could you work out > the math on what the cost would be of running 190 watts for 80% of the day > (19.20hrs) for X number of humid days of the year? How would that compare > to installing a cover? > > David Skolnik > > > > At 07:09 AM 6/22/2004 -0400, you wrote: > >If the room is at 75 degrees F and 75% RH you need to get the piano > >environment to 92 degrees to get 45% RH - not a whole lot of heat. Your > >concern is legitimate though because I believe there is some sort of delay > >for the H2 humidistat to click on and off. It's been a couple years since I > >ran my little temp/RH trials on my piano, but I don't recall it ever > >reaching 100 degrees under the soundboard, and I do remember that will less > >wattage the unit never turned off during periods of high humidity. Even with > >five little rods under there, it's not as if it is like a blast furnace > >going off. Maybe I have too much air movement. If I were to re-install a > >system on my piano, I would thoroughly explore a bottom cover before simply > >adding wattage. Bottom covers were not available when I did my installation. > > > >Why don't I put a bottom cover on it now? I will. That task is #2,573 on my > >To-Do list. > > > >Oh, and my piano is for sale (great piano)! > > > >Terry Farrell > > > >----- Original Message ----- > >From: "V T" <pianovt@yahoo.com> > >To: <pianotech@ptg.org> > >Sent: Tuesday, June 22, 2004 2:23 AM > >Subject: Dampp-Chaser recommendations > > > > > > > Hi David, > > > > > > Yes, 190 Watts seems like quite a bit of power for > > > this application; it seems that he has a somewhat > > > severe environment around the piano. > > > > > > When the heater rods are hooked up to the humidistat, > > > they will cycle on and off. Having 190 Watts (instead > > > of say 60) will make the air heat up more quickly. As > > > long as the humidistat manages to shut off, the > > > "average" temperature will not differ by a huge > > > amount when you compare the 190W and the 60W system. > > > > > > The problem with excessive power is that the > > > soundboard could be shocked from cold to warm in a > > > relatively short amount of time, and that the peak > > > temperature before things stabilize can be much higher > > > with the 190W system. My preference would be to change > > > the temperature more gradually, and that would be > > > better accomplished with less power. > > > > > > Basically, I would say that one wants the least amount > > > of power that will shut off the humidistat when the > > > humidity is at the top of its expected range. This > > > will prevent very sudden changes in temperature > > > and excessive transient temperature peaks. > > > > > > Vladan > > > > > > > > > Andrew- > > > > > > My original question regarding excess heat was in > > > response to Terry > > > Farrell"s comment: > > > > > > >I own a Boston GP-178, which is located in my home. I > > > have about five rods > > > >on it totaling about 190 Watts. > > > > > > I wondered if, at some point, the elevated temperature > > > itself (even with > > > sufficient humidity) can have some negative effect on > > > the soundboard. It > > > seems there has to be SOME limit, yes? no? > > > > > > David Skolnik > > > > > > > > > > > > > > > > > > __________________________________ > > > Do you Yahoo!? > > > New and Improved Yahoo! Mail - 100MB free storage! > > > http://promotions.yahoo.com/new_mail > > > _______________________________________________ > > > pianotech list info: https://www.moypiano.com/resources/#archives > > > > > > > > >_______________________________________________ > >pianotech list info: https://www.moypiano.com/resources/#archives > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives
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