WWW.CLEANCOMFORT.COM
6
DUCTING
IO-DV070
IO-DV070
switch should be installed in series with the 24V or DEHU
terminals to prevent the pump from overflowing. If the
24V Terminal wire is in series with the Safety Float Switch
the DV70 and the dehumidifier will shut off. If the DEHU
Terminal is in series with the Safety Float Switch the
compressor will turn off but the DV070 will continue to
ventilate or circulate air as normal. Contact your local
electrician to install the Safety Float Switch directly to
the dehumidifier.
For installation guidelines, refer to the "Condensate
Pump Installation" section at the back of this manual.
Ducting
Installing Duct Collars
The DV070 comes supplied with an 8" round inlet collar
and an 8" round exhaust collar. Follow instructions
included with these collars.
Ducting for Dehumidification
For the ideal installation, draw air from the central part
of the home and return it to the isolated areas of the
home like the bedrooms, den, utility room, or family
room. Be sure to utilize as many of these remote rooms
as possible and not just one location. The ductwork of
the existing HVAC system can be used to supply air to
the home. If the existing supply goes to isolated areas of
the home, discharge the supply from the DV070 into the
supply duct of the existing HVAC system. If the existing
heating system incorporates a central supply, installa-
tion of a separate supply duct from the DV070 to each
isolated area is recommended.
Fresh Air / Supply Air
i
CAUTION!
DO NOT draw air directly from the kitchen, laundry, or
isolated basement. You may draw air from a basement
that is open to the home. All flexible ducting connected
to the DV070 should be UL listed.
A short piece of flexible ducting on ALL DV070 duct
connections is recommended to reduce noise and
vibration transmitted to rigid ductwork in the structure.
Ducting the DV070 requires consideration of the
following points:
Duct Sizing:
For total duct lengths up to 25', use a
minimum 8" diameter round or equivalent rectangular
duct. For longer lengths, use a minimum 10" diameter
or equivalent duct. Grilles or diffusers on the duct ends
must not excessively restrict airflow.
Isolated Areas:
Effective dehumidification may require
that ducting be branched to isolated, stagnant air flow
areas. Use 8" or larger diameter branch ducting to each
of two or three areas, use 6" or larger to each of four or
more areas. Provisions must be made to provide airflow
from supply locations to central return location. Proper
air distribution is important to ensure even humidity
control and heat distribution throughout the home.
Connecting to Existing HVAC Systems
An optional 8" gravity backdraft damper is available to
prevent reverse air flow through the DV070. If the DV070
is ducted to the supply of an air handler, the backdraft
damper should be placed in the DV070 supply duct.
Ventilation operation is controlled by the digital control
offered with the DV070. These controls determine the
time/frequency that the unit introduces outside air into
the HVAC system. The amount of outside air can be
restricted by the blade damper in the 6" collar. Some
control options require a 6" motorized damper be
installed in the 6" fresh air duct.
i
CAUTION!
Do not connect with a static pressure greater than or
equal to +.5 WG. Contact Technical Support at
1-855-239-2665 for additional details.
Ducting for Fresh Air (Optional)
Fresh air may be brought into the home by connecting an
insulated duct from outside the home to a tee connected
to the 8" duct that brings the return air from the home
to the DV070. Ventilation is activated by turning on the
fan switch or activating the humidity control. Activate
the ventilation timer on units with the ventilating and
humidity control DVP-4034748 to bring in fresh air. Refer
to the Controls section of this manual for programming
instructions of the ventilation timer.
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 DV070 is running in dehumidification mode.
3. Drawing air from outside and blowing inside aids in
slightly pressurizing the home. This helps prevent
dirty and humid air from entering the home else-
where. It also reduces the potential for carcinogenic
radon gas to enter and provides a small amount of
make-up air for atmospheric combustion and exhaust
devices such as a clothes dryer, fireplace, furnace or
water heater.
4. Exhaust fans are recommended in the bath rooms
and kitchen.