Install to Fit Your Application
Ideal when…
• Access to a dedicated central return for
DR65A3000 is available.
• Combined with A/C operation; requires
backdraft damper on the exhaust
port to minimize backdraft when
DR65A3000 is not on but A/C is.
• Providing dry air to a specific area with
an optional 20% open gravity damper
on DR65A3000 supply.
Dedicated Return to Main Supply
SUPPLY
RETURN
AIR HANDLER
DEHUMIDIFIER
M36843
SEPARATE
RETURN
BACKDRAFT
DAMPER
(OPTIONAL)
GRAVITY DAMPER
DR65A3000 Dehumidification System 33-00297EFS—01
5
Flex duct is recommended in connecting to the DR65A3000 collars to reduce vibration noise.
M24745
Electrical requirements:
115 VAC outlet. Ground fault
interrupter (GFI) recommended.
Duct Sizing:
Use minimum 8” diameter round for duct
lengths up to 25’ Minimum 10” required for lengths
longer than 25’ Duct branches from the main inlet/
exhaust should be minimum 8” round for 2-3 branch-
es, and 8” round or larger for 4 branches or more.
Isolated Areas:
Effective dehumidification may
require ducting to isolated or stagnant air flow areas.
Main Return to Main Supply
Ideal when…
• Running DR65A3000 when not running
A/C. Requires damper on the exhaust
port to minimize backdraft when
DR65A3000 is not on but A/C is.
• Access to a dedicated central return for
DR65A3000 is not available.
• System fan should run with
dehumidifier for best results.
A
B
SUPPLY
RETURN
AIR HANDLER
M36844
BACKDRAFT
DAMPER
DEHUMIDIFIER
