water use in humidity control system

[Roger Wheelock]

Hello List,

What we see is that the back cover provides a moisture barrier to a 
significant degree.  This keeps water vapor from the humidifier in the piano 
cavity.  With an open back to the piano, water vapor can move into the room 
as the soundboard has significant porosity.  So addition of a back cover can 
lead to reduced water addition.

The higher wattage rod tends to shorten the cycle of the humidistat.  The 
inside of the piano may become a bit warmer, but I don't think this has a 
strong effect on the humidifier as the heat rises above and away from the 
humidistat.

Roger
Dampp-Chaser Corp.

----- Original Message ----- 
From: <tuner at helmsmusic.net>
To: <pianotech at ptg.org>
Sent: Tuesday, August 26, 2008 9:33 PM
Subject: water use in humidity control system


> Were either the full cover or the back cover added at the same time the
> wattage was increased? That would explain it. Other than that, the only
> thing I can think of is related to the humidistat cycling back & forth
> between the humidifier & dehumidifier (at least, that is my understanding
> of how the system works). Maybe it's this: since you have a higher wattage
> dehumidifier, it doesn't stay on for as long a period before the stat
> cycles back to the humidifier; and conversely, the humidifier also is on
> for a shorter period, thereby using less water? Admittedly, this is a
> total stab in the dark, but like I said, it's the only other thing I can
> think of! This would be a good question for Roger Wheelock at Dampp-Chaser
> :)
>
> -- 
> Scott A. Helms, RPT
> Helms Music Enterprises
> www.helmsmusic.net
>
>
>
>
>