American Aldes DHV-150H Manuale Utente

 

3

 
An optional condensate pump kit may be installed if a 
lift is required to dispose of the condensate. The cond-
ensate pump kit can be ordered direct from the factory. 
See the optional parts list for information on the kit. 

 

 

 

The DHV-150H is equipped with 10” and 6” round inlet 
collars and a 10” round exhaust collar. The 10” and 6” 
round inlet collars are designed with tabs that fold 
inside the filter enclosure of the DHV-150H. The 10” 
round exhaust collar is attached to the DHV-150H by 
folding the tabs inside the end panel of the DHV-150H. 
 

 

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. The ductwork of the existing heating system can 
be used to supply air to the home. If the existing supply 
goes to isolated areas of the home, discharge the 
supply of the DHV-150H into the supply of the existing 
heating system. If the existing heating system 
incorporates a central supply, installation of a separate 
supply duct from the DHV-150H to each isolated area is 
recommended. 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 DHV-150H should be 
UL listed. 
 
The inlet of the DHV-150H is the 10” diameter hole in 
the filter enclosure of the unit. A 10” round collar is 
supplied with the unit to attach to round duct. The duct 
may be permanently attached to the collar. A 6” round 
collar is provided with the unit to attach to the 6” hole in 
the filter enclosure. The 6” collar should be capped if 
fresh make-up air is not desired. If fresh make-up air is 
desired see section 2.4C. 
 
The outlet of the DHV-150H is located on the end of the 
unit. A second 10” round collar is supplied with the unit. 
Cut and remove the safety grid, then bend the tabs on 
the collar inside the hole in the cabinet end. 
 
A length of 10 feet or more of acoustical flex ducting on 
the outlet of the DHV-150H will reduce air noise from 
the fan. A length of flexible ducting on all DHV-150H 
duct connections is recommended to reduce noise and 
vibration transmitted to rigid ductwork in the structure. 
 

Ducting the DHV-150H as mentioned in sections 2.4A-
2.4G requires consideration of the following points: 
 
Duct Sizing: For total duct lengths up to 25', use a 
minimum 10" diameter round or equivalent rectangular. 
For longer lengths, use a minimum 12" diameter or 
equivalent. Grills or diffusers on the duct ends must not 
excessively restrict airflow. 
 
Isolated Areas: Effective dehumidification may require 
that ducting be branched to isolated, stagnant 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. 
 
Connecting to existing HVAC systems: An optional 
10" check damper is available from the factory to prevent 
reverse flow through the DHV-150H. If the DHV-150H is 
ducted to the supply of a high static air handler the check 
damper may be placed in the DHV-150H supply duct. 
 

 

Fresh air can be brought into the structure by 
connecting a insulated duct from outside to the 6” DHV-
150H inlet and by turning on the fan switch or activating 
the humidity control (on units with the humidity control 
panel). Activate the ventilation timer on units with the 
ventilating & humidity control panel to bring in fresh air. 
Refer to section 3.5 for programming instructions for 
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 DHV-150H is running in dehumidification mode. 

3.  Drawing air from outside and blowing inside aids in 

slightly pressurizing the structure. This helps 
prevent dirty and humid air from entering elsewhere. 
It also reduces the potential for carcinogenic radon 
gas to enter and provides make-up air for open 
combustion and exhaust devices like the clothes 
drier, fireplace, and water heater. 

4.  The need for an alternate ventilation device may be 

eliminated. 

 
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. 
 
An insulated 6" diameter duct is generally sufficient to 
provide up to 150 CFM of outside air. Large quantities 
of outside air will impact DHV-150H performance