Air King 6000 Installation & Operating Instructions Manual page 9

CONTROLLING THE HUMIDITY LEVEL
The digital humidistat with this humidifier is to control the amount of moisture added to the air
in your home – It will sense the relative humidity level in the air and work as an ON/OFF switch
to control the humidifier, regardless of whether your furnace is on or not.
At the beginning of the heating season it may take sometime to build up the relative humidity
level in your home to the desired level. For the first few weeks turn the humidistat up high
to ensure the humidifier will turn on with every furnace cycle; after you feel that you have
achieved the desired relative humidity level turn the humidistat down until it cycles the
humidifier OFF. The humidifier will then work to maintain the relative humidity at that level.
ACHIEVING AND MAINTAINING A HUMIDITY LEVEL
Outside conditions are the primary factor affecting the humidity level in your home; the colder
it gets outside the less moisture the outside air will have, your home brings in that outside air
and the humidifier will work to add moisture to it. As outside conditions change the humidity
level in your home will change as well. Other factors which will affect humidity levels in the
home include how many air-changes are occurring, the amount of people occupying the
home, air leaks, the use of showers, exhaust fans, HRV's, and the use of a fireplaces or wood
stoves. For more information on achieving a humidity level and or maximizing the output of the
humidifier please see the Maintenance and Trouble Shooting Guide.
SAFELY OPERATING A FURNACE HUMIDIFIER
Proper control of the relative humidity level in the home is key to ensuring good IAQ (Indoor Air
Quality) for your home as well as protecting against moisture damage. Although a relative humidity
environment of 45-50% may be desirable, setting your humidistat at that point when outside
air temperatures are below 30°F can cause condensation on windows and walls. Continued
condensation for extended periods of time may result in structural damage. Use the chart below as
a guide for maximum relative humidity settings at different outdoor air temperatures.
OUT SIDE AIR TEMPERATURE
-20°F / -30°C
-10°F/-25C
0°F/-20°C
+10°F/-10°C
+20°F/05°C
ABOVE +20°F/0°C
If condensation continues to form on windows at these settings reduce the humidistat setting
by successive 5% increments. After each reduction in setting allow 6 hours for equilibrium to
be reached before readjustment.
If condensation is consistently forming on your windows or if the relative humidity level being
sensed by the digital humidistat is consistently different than the relative humidity level in the
home then you may want to consider the use of a MODEL 6000 REMOTE HUMIDITY SENSOR
KIT – This must be purchased separate (Parts and Service Line 1-800-465-7300) and will
allow you to locate the humidity sensor somewhere in the living space. The remote sensor
comes with 15 feet of wire and a remote sensor housing. Changing the digital humidistat is
easily done and instructions for doing so come with the Remote Sensor Kit. If after moving
the humidistat the condition persists turn OFF the water supply at the needle valve, turn the
humidifier off and consult a qualified HVAC service person.
67285037 Rev. B 11-14
MAXIMUM RELATIVE HUMIDITY SETTING
15%
20%
25%
30%
35%
40%
When your house is unoccupied for longer than 3 days during the winter months always set
the humidistat down to 15% so that severe weather during you absence will not result in
condensation which might cause damage in your home.
BYPASS AIR ADJUSTMENT, SUMMER SHUTDOWN,
AND YEARLY MAINTENANCE
BYPASS AIR ADJUSTMENT
Sometimes there can be a static pressure differential that may cause an excess of air to flow
through the bypass tube, causing less airflow through the distant heat outlets in the house. It
may also blow water off the evaporator bad. In either case the air damper installed with the
bypass collar should by gradually closed until the condition is corrected. To close the damper
loosen the top screw and lift up on the damper and turn closed to the desired position. Damper
adjustment is another way of adjusting the amount of humidity being added to the house (the
less air bypassed the less humidity will be added.)
SUMMER SHUT DOWN
At the end of the heating season complete the following steps.
1. Turn the humidistat off.
2. Unplug the transformer.
3. Close off the water supply at the saddle valve.
4. Close the bypass damper.
YEARLY MAINTENANCE AND WINTER START UP
For detailed recommended maintenance schedule refer to the Maintenance and Trouble
Shooting Guide.
At the beginning of the heating season complete the following steps.
1. Inspect the water supply tube, water drainage tube, and Electrical wiring replace if required.
2. Plug in the transformer.
3. Turn on the humidifier.
4. Turn on the water supply at the saddle valve and check for any leaks.
5. Open the bypass damper.
6. Test the operation of the humidifier and check for any leaks and complete any necessary repairs.
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