On Mon, 24 Nov 2014 19:28:33 -0800 (PST), Hongyi Kang
wrote:


Thanks Edward, one of the websites Nate posted earlier:
http://home.fuse.net/clymer/water/rh.html=20

actually had the conversion between different temperature's RH. And I just=
finished the salt calibration of my hygrometer, it's actually measuring 70=
% instead of 75%, so I guess it is 5% off. The temperature of the air comi=
ng out of the hot register was between 95 and 102. Based on these, I think=
my humidifier is probably working fine, just not enough yet for my wife's =
problem. I'll ask the service tech and see if they could rewire the unit s=
o that it can run while the blower is on. Thanks!

That' a very good idea. I had a room AC when I lived in a very small
room and the AC was right next to my bed, and the fan ran all night even
if the air had cooled off and the compressor wasn't running. I hated
the noise.

I took off the cover, and just had to rearrange three slip-on
connectors. I didnt' have to cut or solder anything, and when the
compressor went off, the fan did too. Furnaces and humidifiers are
more spread out so it probably won't be that easy, but it can certainly
be done.

Actually you only need one wire with two ends.

There is probably a neutral wire from the humidifier to a common neutral
somewhere . You can leave that alone. All you need is a hot
wire that runs from the hot wire where the blower gets its power and
goes straight to the humidifier, where the hot wire from the furnace
control unit already connects to the humidifier. So the power
doesn't have to go through the furnace control unit.

You ought to put a switch on the wire, for when your wife is fully
recovered, or for when you trade houses with someone from New Zealand.