Your humidity control monitors the relative humidity and activates the humidifier accordingly. The humidifier has a water supply that dispenses water evenly
over a humidifier pad. The warm dry air, from the furnace, passes over the humidifier pad and picks up the moist air to circulate it throughout your home.
Humidified air feels warmer and more comfortable so you may be able to lower your thermostat heating setpoint, which saves money on your heating fuel
bills. The end result is that your humidifier gives you a comfortable environment that is also energy efficient. Controlling Your Humidity Settings
Your H8908 Humidistat controls your humidifier.
Choose the humidity control setting using the combination of relative humidity/outdoor temperature setting scale on your humidity control dial.
Match the dial set to the outdoor temperature to optimize the humidity level while reducing the moisture condensation on your windows. See Table 2
to adjust the humidity control to the recommended setting.
NOTE: As the outside temperature drops, a lower humidity setting is recommended to accommodate dewpoint effects.
These settings should reduce the accumulation of moisture and ice on windows and other areas of the home.
Adjust the humidity control setting to adjust for indoor activities such as cooking, showering and clothes drying, which can cause excessive levels of
humidity that can accumulate moisture on your windows.
NOTE: If these activities persist for more than a few hours, set the humidity control to the lowest setting to turn off the humidifier. If the condition does
not improve, ventilate your home to remove the moisture.
Table 2. Setting Your Humidistat.
When Outside Temperature is: Use This Control Setting:
-20°F (-29°C) 15
-10°F (-23°C) 20
0°F (-18°C) 25
+10°F (-12°C) 30
+20°F (-7°C) 35
Above 20°F (-7°C) 40
MAINTAINING YOUR HUMIDIFIER
A regular maintenance program prolongs the life of your humidifier and makes your home more comfortable. The frequency of cleaning depends on the
condition of your water.
You can use either hard or soft water in your humidifier, but hard water mineral deposits are more difficult to clean than soft water deposits. Use the
following procedure to clean your Honeywell humidifier.
WARNING
Serious Personal Injury Hazard.
Can cause electrical shock and injury from moving parts.
Disconnect power and shut off the water supply before removing the cover.
IMPORTANT
Never oil any part of the humidifier.
Every 1 to 3 Months (Depending on Water Quality)
1. Disconnect the power and turn off the humidifier water supply.
2. Remove the humidifier cover by unplugging the connector and loosening the thumbscrew. Grasp the cover near the bottom and pull it toward you.
See Fig. 14.
3. Remove the humidifier pad assembly from the humidifier by grasping the top of the tray and pulling it toward you.
4. Lift the tray off the pad.
5. Gently pinch the water nozzle catches inward until you can lift the water nozzle off the tray.
6. Carefully remove any mineral deposits from the tray and frame. Be sure the frame drain hole has nothing blocking it.
7. Disconnect the drain hose from the drain fitting on the bottom of the humidifier housing.
8. Clean the drain fitting, if necessary.
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