Install Instructions

DUCTING FOR TWO ZONE INSTALLATIONS
NOTE: Dehumidifier zoning is not recommended in
HVAC zoning applications�
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 (40 VA min�) for dampers
NOTE: 5442 Basement Kit includes 2 – 6510 Dampers,
2 – 6610 Dampers and a 24 VAC (40VA) transformer
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
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
90-1875
90-1895
FIGURE 20 – WHOLE-HOME PRIMARY ZONE INSTALLATION
FIGURE 21 – WHOLE-HOME SECONDARY ZONE INSTALLATION
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