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CONVERTIBLE INSTALLATION
In this installation the dehumidifier controls humidity in both
the whole-home and a spot location. The dehumidifier will
dehumidify the whole home as the first priority, switching
to the spot location after the whole-home dehumidification
need has been met. Ducting the unit to the return and supply,
where air is pulled from the return duct, dehumidified, and
discharged to the supply duct, is the most common setup,
with additional ducting run to and from the spot location(s).
Note: Convertible Mode will not work with ventilation, air
cycling, or continuous HVAC fan operation. The Model 70
Living Space Control and third-party controls (see pages
16-17) cannot be used in Convertible Mode operation.
Required Components
Duct Work
18 – 22 AWG Wire
Grilles with 8” Duct Collars
2 – Aprilaire Model 6508, 8” Normally Closed Damper
2 – Aprilaire Model 6608, 8” Normally Open Damper
24 VAC Transformer (40VA min.) for Dampers
NOTE: 4522 Basement Kit includes 2 – 6508 Dampers, 2 – 6608 Dampers
and a 24 VAC Transformer.
Optional Component
Condensate Pan & Normally Closed Float Switch
FIGURE 16 – Convertible Installation
115 VAC
CIRCUIT
SUPPLY DUCT
RETURN
DUCT
CONDENSATE
HOSE
NORMALLY CLOSED
DAMPER
NORMALLY
OPEN DAMPER
NORMALLY CLOSED
DAMPER
NORMALLY
OPEN DAMPER
SUPPLY
TO AREA
DEHUMIDIFIED AIR IS SUPPLIED
DOWNSTREAM FROM A-COIL TO
MINIMIZE EVAPORATION OFF A-COIL
GRILLE WITH 8"
DUCT COLLAR
RETURN FROM AREA
FIGURE 17 – Convertible Wiring
90-1536 90-1537
DAMPERS
Rf DH -WGhGs
Cf
VENT
HVAC EQUIP REMOTE
DEH B +A
G
R
C
G
W
Y Y
W
C
R
SENSOR
ODT
FLOAT
SWITCH
24 VAC
(40 VA min)
TRANSFORMER
DEHUMIDIFIER
CONTROL BOARD
HVAC EQUIPMENTTHERMOSTAT
DEHUMIDIFIER SYSTEM DAMPERS
SPOT WHOLE-HOME
DUCTING & WIRING
10