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12. Close top metal hinged cover and replace front plastic cover.
13. Plug in transformer.
14. Turn humidistat to "test" momentarily and check for media
wheel rotation. Reset humidistat according to outdoor tem-
perature as instructed on label and reinstall front cover. Unit
is back in operation.
Body
Float
Pivot Pin
*Reverse button if it
has not been used.
Replace with new
button if both sides
are worn.
SUMMER SHUT DOWN:
Unplug transformer, close saddle valve, close bypass damper.
(CLEAN PER ABOVE AND LEAVE RESERVOIR EMPTY.) As a
reminder, you may want to put a tag or sticker on the unit indi-
cating it has been shut down for the summer and will require
start up in the fall.
FALL START UP:
Plug in transformer, open saddle valve, open bypass damper
and set humidistat to TEST position. Check for proper water
level and media wheel operation. Set humidistat according to
outdoor temperature as instructed on label.
SERVICING THE FLOAT
If the humidifier has been overflowing, the float valve button
may be worn. This button will wear much like a faucet washer.
To service:
1. Turn off water at saddle valve.
2. Remove float from humidifier (pull out pivot pin).
3. Service float as shown in illustration at left.
4. Reinstall, turn on water at saddle valve and test float.
service hints
Frequently what seems to be a major problem can be solved very easily. Listed below are the common concerns with any humidifier.
Check the simple things first. Remove the front panel and see if there is a crusty, white lime build-up on the media pad. The lime build-
up won't hurt the humidifier, but will reduce its output. Low output might just mean your humidifier needs cleaning. While you're
checking for lime build-up, look to see if the media wheel is turning. If not, check the power supply.
CONDITION WHAT TO CHECK WHAT TO DO
1. Does humidifier need cleaning.
2. Is media wheel rotating?
3. Humidistat setting.
4. Water to unit.
Too little
Humidity
5. Excessive air loss in house.
6. Is water level correct?
7. Is damper open?
Too much 1. Humidistat setting.
Humidity 2. Other humidification sources.
Humidifier 1. Is humidifier level?
Overflows 2. Float valve.
3. Air flow too high.
Humidifier 1. Mounting or plenum.
Making Noise 2. Water pressure.
3. Media Wheel.
1. Clean humidifier and clean or replace media pad
and reservoir liner.
2. a. Clean or replace media pad.
b. Check to see if transformer is properly plugged in.
c. Inspect main fuse or circuit breaker.
d. Check to see if media motor is rotating.
e. Humidistat setting too low, turn knob clockwise
to increase humidity.
3. Set for proper outdoor temperature - lowest 24 hour
temperature.
4. Turn on saddle valve and check for possible
obstruction in water line. Is water supply
connected?
5. Close fireplace damper, seal around doors and
windows.
6. Adjust float.
7. Slide damper out for winter operation.
1. Turn knob counterclockwise to decrease humidity.
2. May be a temporary condition caused by moisture
from laundering, bathing, cooking, etc.
1. Level unit.
2. Service as shown in Fig. 25.
3. Adjust damper.
1. Tighten all fasteners.
2. A slight sound is normal as water enters humidifier.
3. Check clearance of media wheel in reservoir.
1. Turn knob on humidistat to minimum setting.
2. This is a normal condition since humidistat is
controlling humidifier.
Humidifier Motor
Comes On When
Furnace Isn't
Running
This is a normal condition
1. If heating season is over.
2. If heating season is just starting.
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