75% r.h.

[Farrell]

That's an idea. It would also provide for longer cycling times during periods of moderate humidity - rather than being hit with the blast furnace each and every time. It would also provide for a bit of insurance - in case the humidistat ever locked into the "on" position (I hope there is no history of that ever happening?). As far as abuse - Bob Mair, CEO of Dampp-Chaser Corp., "....Dampp-Chaser Humidistats are rated at 200 watts max for the Dehumidifier side...." So I would suppose we are OK in that area.

I'm surprised no one has asked yet, but to be fair and clear here, my Boston grand piano is THE most stable piano I have ever serviced. It is also THE only piano I service that has what I feel is a proper DC installation. I just tuned it a couple days ago (after about six months) and found that it had drifted the most I had ever observed. It was about 2 cents flat in bass, real close in tenor and part of treble, and 2 to 4 cents flat in treble and high treble. Usually when I tune it, it is within 2 cents everywhere.

So I'm not so much complaining, as I am trying to understand, and trying to be able to provide something for my clients that I feel is the reasonably closest to perfection. Case in point, my son's piano teacher has a Yamaha G5. Pitch seems to drift a bit (usually goes flat - have posted on that before). I'm having the darndest time deciding whether to recommend a good room dehumidifier or a DC system. In this particular case, the room dehumidifier may just be the ticket, as I have observed my shop dehumidifier to work very reliably, and the piano is in her music studio, which is a separate 500 square-foot concrete block mother-in-law-type structure.

Terry Farrell
  
----- Original Message ----- 
From: "Ron Nossaman" <RNossaman@cox.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Wednesday, December 04, 2002 11:39 PM
Subject: Re: 75% r.h.


> 
> >It's been a couple years, and I honestly don't remember exactly how I had 
> >it set up. I likely had three rods, one 4' along the rear of the keybed, 
> >and two along the framing under the soundboard. The humidistat is located 
> >along the straight side, about six inches aft of the keybed.
> >
> >Since I added the additional rods, during high humidity times, the system 
> >is energized about 50% to 75% of the time (estimate). So, it seems to me 
> >it is sized just about right.
> >
> >Terry Farrell
> 
> 
> But then you could put in two humidistats with 120 watts of heater bars 
> apiece, and let the expected trigger threshold differences between the two 
> provide a cycle buffer, providing all the dehumidification you'd ever need 
> without abusing the wattage capacity of either humidistat.
> 
> Just a thought.
> 
> Would two humidistats coexist like this, do you suppose?
> 
> Ron N
> 
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