2
How Your Humidifier Works
Your Skuttle Drum Humidifier uses the same principle of evaporation that
you see in nature: a warm breeze passing over an expanse of water will
evaporate the water and raise the relative humidity (RH), just as it does after
a summer shower.
Inside your humidifier, a polyurethane foam evaporator pad lifts water from
the water pan into the warm air stream. The pad’s multiple holes and con
-
necting strands significantly increase the area from which the water can
evaporate. This ample source of moisture and the warm air in your heating
system are what make the humidifier effective.
It’s important to note that water evaporated from the humidifier leaves behind
all the impurities (calcium, iron, lime, bacteria, etc.) that are originally con-
tained in the water. As a result, these impurities are not dispersed through-
out your home, which keeps your living environment cleaner and your family
safer from harmful contaminants.
How to Operate Your Humidifier
Your humidifier’s output is controlled by a humidistat, which monitors the
relative humidity in your home and activates or deactivates the humidifier
accordingly. It is installed either on the cold air return of your HVAC system
or on an interior wall of your home.
As you can see by the chart below, recommended humidistat settings increase
as the outdoor temperature rises. This is to guard against condensation.
(See “FAQs about IAQ”, page 6.)
Outdoor
Humidity
Temperature
Setting
-20°F
Low
-10°F
Low
0°F
Med
+10°F
Med
+20°F
High
Over 20°F
High
An unusually high frequency or prolonged period of indoor activities (such
as showering, cooking, clothes drying, etc.) may cause indoor humidity to
rise to an excessive level, causing condensation to accumulate on windows.
If this condition lasts for more than a few hours, turn your humidifier off until
normal indoor activity resumes. If the condition persists, you should ventilate
your home to remove excess moisture.
