American Aldes DH-100V - Manual (Page 3)

2.4C Ducting for Fresh Air
Fresh air can be brought into the structure continuously
by connecting a duct from outside to the DH-100V inlet
and by turning on the fan switch. Advantages of this form
of ventilation include:
1.
Outside air is filtered before entering the building.
2. Outside air will be dehumidified before entering if
the DH-100V is running.
3. Drawing air from outside and blowing inside aids in
pressurizing the structure. This helps prevent unfil-
tered and humid air from entering elsewhere. It also
reduces the potential for carcinogenic radon gas to
enter.
4. The need for an alternate ventilation device may be
eliminated.
(Note: Aldes Model DHV-100V is specifically
designed for dehumidification and
ventilation.)
An insulated 6" diameter duct is generally sufficient to
provide up to 100 CFM of outside air. An adjustable
damper is recommended for controlling the airflow.
Large quantities of outside air will impact the DH-100V’s
performance positively or negatively, depending upon
the difference between inside and outside air conditions.
Consult the factory by calling 1-800-255-7749 for
recommendations regarding the use of higher flows with
your specific application.
The outside air duct should be connected into the main
inlet duct close to the unit. If no other inlet duct is used,
locate the outside air duct end on top of and as close as
possible to the DH-100V air filter.
3 Operation
3.1 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 ALDES DHV-100V 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.
3.2 Blower Switch
Turning ON the fan switch will cause the unit's internal
blower to run continuously, whether the unit is
dehumidifying or not. This function is desirable if the unit
is used for air circulation or fresh air ventilation.
4 Maintenance
4.1 Air Filters
The DH-100V is equipped with 2 air filters. A foam
prefilter followed by a pleated fabric filter. These should
be checked monthly. Operating the unit with dirty filters
will reduce dehumidifier capacity and efficiency and may
cause the compressor to cycle off and on unnecessarily
on the defrost control.
If dirty, the foam prefilter can be vacuumed or carefully
hand washed with warm water and mild detergent, then
rinsed. The pleated fabric filter can generally be
vacuumed clean several times before needing
replacement. Replacement filters can be ordered from
the factory or purchased locally if available. DO NOT
operate the unit without the filters or with a less effective
filter. The heat exchange coils inside the unit could
become clogged and require disassembly to clean.
4.2 Blower Oiling
The blower motor is factory lubricated for many years of
normal operation. However, periodic oiling will extend
motor bearing life. To oil, remove the plastic cap from the
two oiling tubes extending from the unit above the
humidity control (see Figure 3). Add 3 to 5 drops of SAE
20 non-detergent oil to each port every 6 months. DO
NOT use thinner oil or penetrating oil. Blower life can
actually be decreased by such oil.
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