Ducting The Dehumidifier Inlet And Outlet; To The Hvac System - Aprilaire E080 Installation & Owner's Manual

DUCTING THE DEHUMIDIFIER INLET AND OUTLET TO THE HVAC SYSTEM
• Use when both sides of the duct system are accessible
(see FIGURE 15)
• When ducting from return to supply, the HVAC blower does
not need to be running when the dehumidifier is running.
• When ducting return to supply, allow adequate space
(24" min) before the first branch duct to ensure the warm
dehumidified air is thoroughly mixed with the HVAC system air.
FIGURE 15: FOUR INSTALLATION CONFIGURATIONS
RETURN-TO-RETURN
BASEMENT INSTALLATION
B
AIR IS PULLED
FROM THE MAIN
RETURN DUCT
A
RETURN-TO-RETURN ATTIC INSTALLATION
E
G
AIR IS DISCHARGED TO
THE MAIN RETURN DUCT
A. DEHUMIDIFIER
B. 10" DIAMETER INSULATED DUCT
10
C
6
FEET
MIN
AIR IS DISCHARGED TO
THE MAIN RETURN DUCT
90-1886
F
6 FEET MIN
AIR IS PULLED
FROM THE
MAIN RETURN
DUCT
H B
90-1888
C. HVAC/FURNACE
D. PLENUM BOX
• When ducting from return to return, wire the dehumidifier to
the HVAC system as shown in FIGURE 20 to ensure the HVAC
blower runs when the dehumidifier is operating.
• Wire the dehumidifier to the HVAC system (see FIGURE 20
for exact wiring) and set up the dehumidifier to be disabled
when the AC is running
RETURN-TO-SUPPLY
BASEMENT INSTALLATION
MODEL E100
0.6" W.C. MAX
MODEL E080
0.4" W.C. MAX
AIR IS PULLED
FROM THE MAIN
RETURN DUCT
B
RETURN-TO-SUPPLY ATTIC INSTALLATION
D
24"
MIN
AIR IS DISCHARGED
TO THE SUPPLY DUCT
E. AIR HANDLER
F. PLENUM BOX OR Y-FITTING
AIR IS DISCHARGED
TO THE SUPPLY DUCT
C
E
F
AIR IS PULLED
G
FROM THE MAIN
RETURN DUCT
H B
G. FILTER
H. CONDENSATE PAN
90-1887
90-1889