FOR HVAC INSTALLER ONLY
panel has a cover that must remain open to the air within the living space for accurate humidity sensing. Position the fan switch on when the home is occupied. The impeller fan blends fresh air with the inside air. It also filters and circulates the blended air throughout the home.
The humidity/fan control panel can be used in conjunction with the optional fresh air damper. When used with the optional fresh air damper, the fan/filter switch will act as a fresh air ventilation control. When the switch is ON (in this configuration), the impeller fan will run, the fresh air damper will open, and fresh air will be filtered and brought into the structure. When the switch is OFF, the fresh air damper will close and the impeller fan will operate only when the humidity control calls for dehumidification. Contact the factory for instructions on this type of installation.
4.2Ventilation Timer and Humidity Control Panel
See Figure 2: The ventilation timer and humidity control panel automatically controls both the ventilation and the humidity of the living space. The ventilation timer and humidity control panel contains an adjustable humidity control, a fan switch, and a ventilation timer. This panel will control the humidity and allow programmed ventilation of the living space. This panel works in conjunction with the optional fresh air damper to provide ventilation. The minimum fresh air ventilation schedule recommended is “on” when occupied two or more people.
This panel should be mounted in a central area of the structure where it can accurately sense the humidity of the air in the living space. The panel has a cover that must remain open to the air within the living space for accurate humidity sensing.
4.3 Humidity Control Adjustment
Set the humidity control to the desired humidity level for the home. Turning the knob clockwise results in a drier setting. See the back of
the control panel cover for set points. The dehumidifier will run continuously until the relative humidity (RH) is reduced to the humidity control dial setting. Setting the humidity control to lower RH levels will NOT increase the unit's dehumidification rate; the unit will simply run
longer to reduce the area's RH to the setting. The
Quality humidity meters are available from the factory and are recommended to accurately monitor humidity levels.
4.4 Fan/Filter Switch
Turning ON the fan/filter switch will cause the the
When the switch is OFF the impeller fan will operate only when the humidity control calls for dehumidification or when the ventilation timer calls for ventilation.
4.5 Ventilation Timer
The ventilation timer controls the impeller fan and the motorized fresh air damper. When the ventilation timer is activated, the UA- 150H will circulate the indoor air, and bring in fresh air from outside. The ventilation timer should be set for the required ventilation of the residence. The home should be ventilated with fresh air as suggested by applicable codes and standards. Minimally, ventilate when occupied by plus two people.
In cold climates or areas where the outdoor dew point is low at times, ventilation can be used to dehumidify the structure. This is accomplished by bringing the dry, low dew point air into the structure during these times. This approach is often more economical than running the dehumidifier to remove excess moisture from the structure. For example; in a house that experiences condensation on the interior surface of the windows during the winter, increasing the amount of ventilation will often cure the problem. To avoid condensation on windows and in walls, increase the ventilation rate and duration immediately. Call the factory for assistance if condensation is not eliminated.
The ventilation timer is an electronic timer that displays the current time. This timer has a battery backup, so it will not require resetting after a power outage. Following a prolonged power outage the display of the timer will flash on and off indicating a power outage has occurred. The
The ventilation timer has six programs with each program having one “on” and one “off” event. A program allows the user to turn the ventilation on at a certain day and time, then it allows them to turn the ventilation off at a certain day and time. Each of these programs can be repeated daily or weekly or during a specified block of days. All six of the programs operate independently of each other.
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