Ducting; Ducting In Basement - Aprilaire 1872 Installation And Operating Manual

DUCTING

DUCTING IN BASEMENT

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�7"w�c�
REQUIRED COMPONENT:
• 10" Ductwork
FIGURE 9 – PREFERRED BASEMENT INSTALLATION
10" DUCT
AIR IS PULLED
FROM AND
SUPPLIED TO THE
RETURN DUCT
DEHUMIDIFIER
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�
HVAC/FURNACE
6 ft
MIN
90-2022
FIGURE 10 – ALTERNATE BASEMENT INSTALLATION
0.7"w.c.
MAX
AIR IS
PULLED FROM
RETURN DUCT
10" DUCT
AIR IS DISCHARGED
TO SUPPLY DUCT
HVAC/ FURNACE
90-2023
7