Aprilaire 1850 Dehumidifier User Manual


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TO/FROM
SECONDARY ZONE
SUPPLY DUCT
RETURN
DUCT
NORMALLY CLOSED DAMPER
NORMALLY CLOSED DAMPER
SUPPLY TO
PRIMARY ZONE
RETURN FROM
PRIMARY ZONE
NORMALLY
OPEN
DAMPER
NORMALLY
OPEN
DAMPER
6 ft
MIN
TO/FROM
PRIMARY ZONE
SUPPLY DUCT
RETURN
DUCT
NORMALLY OPEN DAMPER
NORMALLY OPEN DAMPER
SUPPLY TO
SECONDARY ZONE
RETURN FROM
SECONDARY ZONE
NORMALLY
CLOSED
DAMPERS
FIGURE 18 – Whole-Home Primary Zone Installation
FIGURE 19 – Whole-Home Secondary Zone Installation
90-1875
90-1895
DUCTING FOR TWO ZONE INSTALLATIONS
In this installation the dehumidifier controls the humidity in two separate zones, a Primary and Secondary Zone. The dehumidifier will dehumidify
the Primary Zone as the first priority, and will switch to the Secondary Zone after the dehumidification needs of the Primary Zone have been
satisfied.
IMPORTANT: Normally Closed dampers must be installed in the ducts serving the Primary Zone and Normally Open dampers
installed in the ducts serving the Secondary Zone.
Required Components
10”DuctworkandFittings
Grilleswith10”DuctCollars
Drain Line
2–AprilaireModel6510,10”NormallyClosedDamper
2–AprilaireModel6610,10”NormallyOpenDamper
24 VAC Transformer (40VA min.) for Dampers
NOTE: 5442 Basement Kit includes 2 – 6510 Dampers,
2 – 6610 Dampers and a 24VAC (40VA) transformer
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