7
3 Operation
The DHV-150H can be equipped with various
accessories to enhance its operation. A remote control
panel must be used with the DHV-150H. There are two
remote control panels from which to choose. The
humidity/fan control panel is used to control humidity
and the fan. The ventilation timer and humidity control
panel is used to control ventilation, humidity and the
fan.
3.1 Humidity/Fan Control Panel
See Figure 7: The humidity/fan control panel
automatically controls the humidity of the living space.
The humidity/fan control panel contains an adjustable
humidity control and a fan switch. 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.
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 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 fan will
operate only when the humidity control calls for
dehumidification. Contact the factory for instructions
on this type of installation.
3.2 Ventilation Timer and
Humidity Control Panel
See Figure 7: 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.
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.
3.3 Humidity Control Adjustment
Set the humidity control to the desired humidity level
for the home. 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 DHV-150H
unit (and refrigerant-based dehumidifiers in general)
will reduce a warm space's RH to a lower level than
that of a cool space. It is therefore pointless to set the
humidity control to excessively low levels in cool
rooms; doing so will result in long periods of ineffective
dehumidifier run time.
Quality humidity meters are available from the factory
and are recommended to accurately monitor humidity
levels.
3.4 Fan/Filter Switch
Turning ON the fan/filter switch will cause the central
conditioning unit's internal fan to run continuously,
whether the central conditioning unit is dehumidifying
or not. This function is desirable if the central
conditioning unit is used for air circulation and filtration
to achieve maximum indoor air quality. When the
switch is ON; air will be constantly filtered through the
central conditioning unit and circulated throughout the
house. When the switch is OFF the fan will operate
only when the humidity control calls for
dehumidification or when the ventilation timer calls for
ventilation.
3.5 Ventilation Timer
The ventilation timer controls the fan and the
motorized fresh air damper. When the ventilation timer
is activated, the central conditioning unit 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.
In cold climates or areas where the outdoor dew point
is low at times, ventilation can be used to dehumidify
the structure. 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.
