User Guide

DUCTING
The dehumidifier can be ducted to pull air from and return dehumidified air to the HVAC return duct. This installation will ensure warm,
dehumidified air is thoroughly mixed with the HVAC system air before being discharged into the living space. Alternatively, the dehumidifier can
be ducted to discharge to the supply duct, but the external static pressure of the HVAC system must not exceed 0.6”w.c.
Required Component
10” Ductwork
Ducting Notes:
• Use insulated duct when the discharge is ducted to the supply side of the HVAC system.
• Use a minimum of 12” of flex duct at the dehumidifier inlet and outlet to prevent vibration noise transmission.
• When ducting return to return (preferred), the dehumidifier must be wired to turn on the HVAC fan when operating.
• When ducting return to supply, allow adequate space before the first branch duct to ensure the warm dehumidified air is thoroughly mixed
with the HVAC system air.
AIR IS
PULLED FROM
RETURN DUCT
HVAC/
FURNACE
AIR IS DISCHARGED
TO SUPPLY DUCT
0.6” w.c.
MAX
10” DUCT
HVAC/FURNACE
AIR IS PULLED
FROM AND
SUPPLIED TO THE
RETURN DUCT
10” DUCT
DEHUMIDIFIER
6 ft
MIN
FIGURE 9 – Preferred Basement Installation FIGURE 10 – Alternate Basement Installation
90-1886 90-1887
DUCTING IN BASEMENT
7