DUCTING TO HVAC SYSTEMS
8
b. Installation in a Basement or Crawlspace
Install a separate 8" return for the Ultra98/120 in a central area of the structure. Duct the supply of the
dehumidifier to the air supply of the HVAC system with a backdraft damper.
Optional:
Duct the supply of the Ultra98/120 to a 8" x 8" x 8" tee/damper with a gravity draft damper,
adjusted to 20% open to the basement. CAUTION: Air takes the path of least resistance. If the upper levels
of the living space are not receiving the appropriate amount of dry air, this damper may need to be adjusted.
When the dehumidifier is not running, there is a chance that air from the basement or crawlspace will make
its way back through the gravity damper and into the living space.
Optional
Outdoor
Air Intake
800.533.7533 | Santa-Fe-Products.com
Ultra Series
Indoor Air
Return
Motorized
Damper
Air Handler Supply
Ultra Series
Supply
Santa Fe ULTRA98/120 Installation & Operation Instructions
Backdraft
Damper
Dry Air to Basement
Optional
Duct Tee
& Gravity
Damper
13