MANUAL MODE
When the humidistat is in Manual Mode (see FIGURE 3 – internal switch in
the “MAN” position and “M” in the display), it is important to anticipate a
drop in outdoor temperature and reduce the setting accordingly to avoid
excess condensation. For example, with an outdoor temperature of 20°F, the
recommended setting will be 35%. If the temperature is expected to fall to 0°F
that evening, reduce the setting to 25% several hours prior to the temperature
change.
See TABLE 4 for the recommended settings. These settings represent a
compromise between humidity levels within the range of comfort and
protection from window condensation. For example, a 50% indoor humidity
in wintertime may be ideal for comfort, but would result in damaging
condensation. Thus, observing recommended humidity levels on the humidifier
control is important. Condensation on the inside surface of windows in the form
of fogging or frost is indicative of over-humidification. This same condensation
can occur in other areas of the home, resulting in damage.
TABLE 4 – OUTDOOR TEMPERATURE AND RECOMMENDED INDOOR RH SETTING
Outdoor Temperature Recommended Indoor RH Setting
+40°F 45%
+30°F 40%
+20°F 35%
+10°F 30%
0°F 25%
-10°F 20%
-20°F 15%
TEST/RESET
The “Test/Reset” setting allows the humidifier operation to be checked even if
there is no call for humidity. See “Check the Humidifier Operation.”
CHECK THE HUMIDIFIER OPERATION
DIGITAL HUMIDIFIER CONTROL
Set the knob to “Test/Reset,” make sure that the water saddle valve is open and
that the humidifier is on. The HVAC fan must be running for the humidifier to
function. The humidifier will only operate for 1 minute in test mode. Reduce the
humidifier control setting to the recommended inside humidity, depending on
the outside temperature. DO NOT LEAVE IN TEST MODE AS HUMIDIFIER WILL
NOT OPERATE.
90-1236B
FIGURE 3 – MANUAL MODE
English 1312 English
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