Справочник Пользователя для American Aldes DHV-150H

 

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positively or negatively, depending upon the 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 to the 6” 
round collar on the filter enclosure of the unit. The 6” 
round collar includes a manual damper. Adjust the 
manual damper to provide the desired amount of fresh 
air for ventilation. The amount of fresh air should be 
based on the size and occupancy of the residence. If 
you are unsure of your ventilation air requirements, 
consult the factory by calling 1-800-255-7749 for 
assistance. 

 

Hood Options 

  
American ALDES offers the fresh air vent hood and 
constant airflow regulators (CAR) to control the amount 
of fresh air entering the home.  These are used in lieu 
of the manual damper in the 6” collar on the main unit.  
The CAR, inserted in the vent hood collar, 
automatically maintains the desired airflow, 
independent of pressure.   A CAR is recommended for 
installations where the DHV draws return air from a 
shared HVAC system return duct, to avoid excessive 
ventilation when the HVAC fan cycles on.  If the indoor 
air return is independent of the HVAC system, the CAR 
is not necessary, as the manual damper may be set to 
the desired airflow. 
 

 

If the structure in which the DHV-150H is to be installed 
has an existing forced air HVAC system, utilize the 
HVAC system to make the DHV-150H installation 
easier. 
 
Basement Installation: Install a separate return for the 
DHV-150H in a central area of the structure. Duct the 
supply of the DHV-150H to a 10” x 10” x 10” 
tee/damper that is 30% open to the basement. Duct the 
other side of the tee to the air supply of the existing 
HVAC system. Connect an insulated duct from outside 
to the 6” collar of the DHV-150H if you wish to provide 
optional fresh make-up air. 
 
Crawl Space Installation: Install a separate return for 
the DHV-150H in a central area of the structure. Duct 
the supply of the DHV-150H to a 10” x 10” x 10” 
tee/damper that is 30% open to the crawl space if 
desired. Duct the other side of the tee to the air supply 
of the existing HVAC system. Connect an insulated 

duct from outside to the 6” collar of the DHV-150H if 
you wish to provide optional fresh make-up air. 
 

 

ALWAYS install a catch pan with a drain or float 
interrupt for condensate under the DHV-150H in an attic 
or condensate may drip down on the ceiling of the living 
space below. 
 
Locate a separate return for the DHV-150H in a central 
area of the structure. Duct the supply of the DHV-150H 
to the air supply of the existing HVAC system. Connect 
an insulated duct from outside to the 6” collar of the 
DHV-150H if you wish to provide fresh make-up air. 
 

 
Attach the DHV-150H return to an independent return 
from the upper level. Attach the DHV-150H supply to 
the supply of the basement HVAC system. This will 
promote circulation of air through the whole structure 
from the upper level to the lower level through the 
DHV-150H. If the DHV-150H is not connected to both 
areas, it will not control the humidity and ventilation of 
the entire structure. Connect an insulated duct from 
outside to the 6” collar of the DHV-150H if you wish to 
provide fresh make-up air. 
 

 
When installing the DHV-150H in a structure that does 
not have a forced air HVAC system, a single return for 
the DHV-150H should be installed in central open area 
of the structure. DO NOT locate the return in a 
bathroom or a kitchen. The supply of the DHV-150H 
should be located in the remote areas of the structure 
(such as bedrooms, den, etc.). By ducting this way, the 
air inside the structure will circulate through the DHV-
150H to be filtered and dehumidified. 4" diameter duct 
is recommended for branches to the bedrooms, 6" 
diameter duct is recommended for branches to larger 
areas. Refer to section 2.4B for branch duct sizing. 
Connect an insulated duct from outside to the 6” collar 
of the DHV-150H if you wish to provide fresh make-up 
air.