SANTA FE ULTRA120V Ultra Series Dehumidifier Installation Guide
- June 13, 2024
- SANTA-FE
Table of Contents
ULTRA120V
Alternative HVAC System Installations
If the Recommended Dedicated Ultra Series Return to HVAC Supply Installation is not possible, there are several alternative installation options available.
- DO NOT locate return in a bathroom or kitchen.
- Control should be located remotely from the dehumidifier and placed in a central location.
- For basement and crawl space installations, an optional tee can be installed on the Ultra Series Supply.
HVAC Return to HVAC Supply
Check Damper should be in place between the Return and Supply connections of
the dehumidifier.
If Check Damper is not in place, the HVAC fan must turn on when the
dehumidifier is in operation.
If the system has greater than 0.5” WG the ducting must be
reconfigured.
CAUTION!
TO AVOID THE DEHUMIDIFIER CYCLING IN AND OUT OF DEFROST, IT IS RECOMMENDED
THAT THE LEAVING AIR TEMPERATURE OF THE A/C COIL IS NOT BELOW 55°F. ALSO, THIS
INSTALL IS NOT RECOMMENDED FOR CLIMATES WERE THE HEATING SYSTEM WILL RUN
DURING THE SPRING AND FALL TIMES OF THE YEAR, AS THIS COULD DIMINISH THE WATER
REMOVAL CAPABILITY OF THE DEHUMIDIFIER.
Check Damper should be in place between the Return and Supply connections of
the dehumidifier.
If Check Damper is not in place, the HVAC fan must turn on when the
dehumidifier is in operation.
WARNING
DUE TO PRESSURE RESISTANCE IT IS NOT RECOMMENDED TO USE THE OPTIONAL OUTDOOR
AIR INTAKE WHEN INSTALLING THE DEHUMIDIFIER SUPPLY TO SUPPLY.
CAUTION!
PLEASE NOTE: RETURN TO RETURN INSTALLS ARE TO BE CONSIDERED LAST RESORT
OPTIONS AND ARE NOT RECOMMENDED. THE DEHUMIDIFIER WILL HEAT THE AC COOLING
COILS WHICH DIMINISHES THE AMOUNT OF WATER THE AC SYSTEM WILL REMOVE WHEN
OPERATING. IF THIS INSTALLATION IS CHOSEN, THE DEHUMIDIFIER MUST ACTIVATE THE
HVAC BLOWER AND AC CALLS NEED TO LOCK OUT THE DEHUMIDIFIER FROM RUNNING.
PLEASE CHECK YOUR LOCAL CODES PRIOR TO INSTALLING.
Dedicated Ultra Series Return to HVAC Return
Create a separate return for the Ultra Series Dehumidifier in a central area
of the building.
Installing the supply air from the Ultra Series Dehumidifier to the return of
the HVAC system requires the HVAC fan to run when the Ultra Series
Dehumidifier is operating. 
HVAC Return to HVAC Return
Check Damper should be in place between the Return and Supply connections of
the dehumidifier.
If Check Damper is not in place, the HVAC fan must turn on when the
dehumidifier is in operation.
No Existing Ductwork Installation
When installing the Ultra Series Dehumidifier in a structure that does not
have a forced-air HVAC system or is not being tied into the system, a single
return for the Ultra120V should be installed in a central location.
Install a 6” insulated duct from outside, teeing into the 8” return duct of
the Ultra Series Dehumidifier to provide outdoor air ventilation (optional).
The supply of the Ultra Series Dehumidifier should be ducted to the rooms in
the home that have the ductless mini-split heads and as close to the heads as
possible. Be sure to utilize multiple rooms to allow air inside the structure
to properly circulate. Proper air distribution is important to ensure even
humidity control and heat distribution throughout the structure.
A 6” diameter duct is recommended for branches to bedrooms. An 8” diameter
duct is recommended for branches to larger areas. 
- DO NOT locate return in a bathroom or kitchen.
- DO NOT locate the supply in rooms where doors may be closed.
- Control should be located remotely from the dehumidifier and placed in a central location.
Recommended Closet Installation
Due to space limitations, a closet installation may require additional
considerations. Locate the dehumidifier under or next to the HVAC system as
space allows. A passive vent or louver door is required to allow air to be
pulled in from the living space.
- No inlet duct is required. Air is pulled through the passive vent or louver door from the living space. Where outlet space is restricted, the outlet duct collar is optional.
- Install an insulated duct from outside to the 6” collar of the Santa Fe Ultra Series Dehumidifier to provide outdoor air ventilation (optional).
- Control should be located remotely from the dehumidifier and placed in a central location.
WARNING!
WHEN INSTALLING THE DEHUMIDIFIER AS PART OF A COMBUSTION TYPE HVAC SYSTEM
(GAS, OIL, PROPANE, ETC.), FOLLOW ALL LOCAL AND NATIONAL BUILDING AND SAFETY
CODES.
a. Central Return to HVAC Supply
Duct the supply of the Ultra Series Dehumidifier to the supply of the existing
HVAC system with a backdraft damper.
CAUTION!
PLEASE NOTE: RETURN TO RETURN INSTALLS ARE TO BE CONSIDERED LAST RESORT
OPTIONS AND ARE NOT RECOMMENDED. THE DEHUMIDIFIER WILL HEAT THE AC COOLING
COILS WHICH DIMINISHES THE AMOUNT OF WATER THE AC SYSTEM WILL REMOVE WHEN
OPERATING. PLEASE CHECK YOUR LOCAL CODES PRIOR TO INSTALLING.
Alternative Closet Installation
If the Recommended Closet Installation is not possible, there are alternative
installation options available.
- No inlet duct is required. Air is pulled through the louvers or grille from the living space.
- Install a 6” insulated duct from outside, teeing into the 8” return duct of the Santa Fe Ultra Series Dehumidifier to provide outdoor air ventilation (optional).
- Control should be placed in a central location or the on board control can be used for this installation.
Central Return to HVAC Return
Duct the supply of the Ultra Series Dehumidifier to the return side of the
existing HVAC system.
In a central return system, the HVAC fan must run when the dehumidifier is
running.