Application Note

Fluke. Keeping your world
up and running
.
Fluke Corp
or
ation
PO Box 9090, Everett, WA USA 98206
Fluke Europe B.V.
P
O Box 1
1
86, 5602 BD
Eindhoven, The Netherlands
For more information call:
In the U
.S
.A. [phone] or
Fax [phone]
In Europe/M-East/Africa (31 40) 2 675 200 or
Fax [phone]
In Canada (800)-36-FLUKE or
Fax [phone]
From other c
ountries [phone] or
Fax [phone]
Web access: http://www.fluke.com/
©2005 Fluke Corporation
. All rights reser
ved.
Printed in U.S.A. 8/2005 2524516 A-EN-N Rev B
Options 1, 2, and 3 are imple-
mented
. Since the equipment is
not oversized, you think it will
result in the desired effect.
Option 4 makes you nervous, so
you decide if further improve-
ment is needed later, you can
try it then. You don’t want to
bring up options 5 and 6 due to
the inevitable cost discussion.
So now it’s time for
your presentation to the
homeowner...
“The high humidity you have
been experiencing indoors is a
result of lower outdoor temper-
atures that result in less operat-
ing time. Less operating time
means less moisture removal.
Running the fan continuously
allows moisture remaining on
the evaporator and in the drain
pan to be re-absorbed into the
air stream and keeps the
humidity above comfort levels.”
3 Fluke Corporation Investigating residential humidity complaints
“I strongly recommend a
thermostat ‘F
an Auto’ setting for
overall comfort. I was able to
make an adjustment to the
condensate pan for better
drainage, which will help. And
I’ve adjusted your thermostat for
better moisture control. For
increased comfort at night
when there is no solar heat
gain, I recommend a thermostat
setting 1 to 2 degrees lower
than during the daytime.”
“There are additional things
that can be done, but I don’t
think the expense of these
modifications would be cost
effective for you at this time. I
believe the low cost changes I
have made for you will result in
the humidity levels you are
seeking. If time should prove
me wrong, then we can
address the other options at
that time, but again, I believe
you are going to be happy with
the adjustments I have made.”
*WB stands for wet bulb temperature, DP for
dew point, and RH for relative humidity.