Barbara, I think I would still include the rods, even if standby wattage is high. The system is designed to work with the rods and tank or rods alone. I would guess that DC would probably discourage the installation, even in this instance with no rods (suppose the Disklavier is unplugged for some time). Even if the wattage is high, the rods would just sit idle more of the time. No harm done. And yes, Don, I would never dispute the efficacy of a cover. WI, USA climate is similar to yours, though generally not quite as extreme. RH ranges easily from 10% or 15% to high 90%'s. The difference here between no system and system without a cover of any kind is enough to stabilize to the point of not having to deal with pitch corrections in most situations. I've installed covers as well, and the improvement is measurable, but I'd not give it a ten-fold increase rating. In my situation, it often is the difference between 6 month tunings with pitch corrections and annual tunings without correcting pitch. It pays for itself very quickly. Different strokes. William R. Monroe On Thu, Apr 15, 2010 at 1:43 PM, Barbara Richmond <piano57 at comcast.net>wrote: > Hi Don, > > Actually, I had wondered about the option of a humidifier & humidistat > only. In this case, I believe lack of humidity is the bigger problem. > > Barbara Richmond, RPT > near Peoria, Illinois > > > > ----- Original Message ----- > From: "Don" <pianotuna at accesscomm.ca> > To: pianotech at ptg.org > Sent: Thursday, April 15, 2010 7:36:25 AM GMT -06:00 US/Canada Central > Subject: Re: [pianotech] Disklavier DC installation > > Hi William, > > I should have mentioned our humidity here goes from 4% to 84%. Outdoor > temperatures are from +44 to -40 C. No undercover, no control. Back covers > for uprights help as well. Improvement over no cover on an upright is a > factor of 4 (1 cent per year on a good piano), and improvement on a grand > is a factor of 10 (4 cents per year on a good piano). > > The idea of humidity control is to allow the client to save money that can > be spent on regulation and other maintenance. > > What is the wattage on the diskclavier? Could a case be made for a bottom > cover and humidifier only? > > At 11:53 PM 4/14/2010 -0500, you wrote: > >Barbara, > > > >Regarding Don's assessment, I dream and in fact install many DC units > >on grands sans the undercover and the improvements are remarkable. I > >believe the undercover adds more, but it's not fair to suggest that no > >undercover means the system is ineffective. > > > >William R. Monroe > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100415/8cf10378/attachment.htm>
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