Aprilaire 1750A - Single Zone - Ducted to HVAC System

SINGLE ZONE – DUCTED TO HVAC SYSTEM INSTALLATION
Using the dehumidifier in conjunction with the HVAC system is the optimum solution
for year-round, whole-home control. This installation is typically in basement or attic
locations, where air is pulled from the return duct, dehumidified, and discharged
to the supply duct. Additional configurations include only ducting the dehumidifier
outlet to the supply or ducting the inlet and outlet to the return duct. In the latter
case, the HVAC fan must be activated during dehumidification.
Required Components
Duct Work
18 – 22 AWG Wire
Optional Components
Condensate Pan & Normally Closed Float Switch
Grille
Model 76 Control
Model 8910 Home Comfort Control
™
Third-Party Control
FIGURE 9 – Single Zone – Ducted to HVAC System,
Basement Installation
AIR IS PULLED FROM
RETURN DUCT
DEHUMIDIFIED AIR IS SUPPLIED
DOWNSTREAM FROM A-COIL TO
MINIMIZE EVAPORATION OFF A-COIL
DEHUMIDIFIER
HVAC / FURNACE
90-1536 90-1537
DAMPERS
Rf DH -WGhGs
Cf
VENT
HVAC EQUIP SWITCH REMOTE
FLOATDEH B+A
R
C
W
YY
W
G
C
R
G
ODT
SENSOR
THERMOSTAT HVAC EQUIPMENT
DEHUMIDIFIER
CONTROL BOARD
BASEMENT DUCTING & WIRING
Wiring Notes:
•IfwiringtoaModel76Control,seeMODEL76EXTERNALCONTROLsectiononpage19.
•IfwiringtoaModel8910HomeComfortControl
™
or other Third-Party Control, see MODEL 8910 HOME COMFORT CONTROL
™
OR
THIRD-PARTY CONTROL section on page 21.
FIGURE 10 – Single Zone – Ducted
to HVAC System, Basement Wiring
7