5
4
STEP 2: Disassemble the Humidifier Control
Remove the knob. Remove the cover by pulling at the bottom and
swinging it out and upward.
STEP 3: Check the Mode Switch
See
Figure H
(on page 12) for the mode switch (labeled A and B).
Make sure the switch is correctly set for the type of humidifier
installed.
Set the Mode Switch in position A for Models:
220, 224, 400 Series, 440, 500 Series, 550, 558,
560, 568, 600 Series, and 700 Series (gray colored
humidifiers only).
Set the Mode Switch in position B for Models:
110, 112, 445, 448, 700 (almond colored humidifier
only), 760, and 768.
Do not operate the humidifier with the Mode Switch in the
wrong position. Damage to the Humidifier Control could result.
STEP 4: Check the Change Water Panel indicator setting.
This setting will control when the indicator light turns on,
reminding you to change your water panel. If your Control came
with a humidifier, the Control is pre-set for the humidifier. If the
installation site has a 3-month or shorter heating season or very
hard water, you may want to adjust the setting (see
Figure B
).
Use the “OFF” setting
to turn the
Water Panel Change Indicator OFF.
NOTE:
When using the Model 50 Current
Sensing Relay, the Water Panel Change
Indicator MUST be OFF.
Use Setting “A”
for Model 400 Series
humidifiers in areas
with very hard water.
The indicator will light
after 150 hours of
humidifier operation.
Use Setting “B”
for Model 400 Series,
500 Series, 600 Series
and 700 Series
humidifiers in areas
with very hard water.
The indicator will light
after 300 hours of
humidifier operation.
Use Setting “C”
for Model 500 Series, 600 Series
and 700 Series humidifiers. The indicator will light
after 600 hours of humidifier operation.
Figure B
Water Panel
Indicator
Settings
90-1202
