Install To Fit Your Application - resideo Honeywell Home DR90 Guide D'installation Professionnelle

Install to Fit Your Application

Flex duct is recommended in connecting to the DR90 collars to reduce vibration noise.
Main Return to Main Return
A
RETURN
DR90
Main Return to Main Supply
B
RETURN
DR90 Dehumidification System 69-2407EFS—02
AIR HANDLER
AIR HANDLER
SUPPLY
BACKDRAFT
DAMPER
DR90
Duct Sizing: Use minimum 10-in. diameter round for
duct lengths up to 25 ft. Minimum 12-in. required for
lengths longer than 25 ft. Duct branches from the
main inlet/exhaust should be minimum 10-in. round
for 2-3 branches, and 12-in. round or larger for 4
branches or more.
For the optional fresh air ventilator port, use 6-in.
round, insulated duct for lengths up to 50 ft.
Use 8-in. round duct for more than 50 ft. of if more
than 100 CFM is required.
Isolated Areas: Effective dehumidification may require
ducting to isolated or stagnant air flow areas.
Electrical requirements:
115 VAC outlet. Ground fault
interrupter (GFI) recommended.
Ideal when...
SUPPLY
• Running DR90 with A/C operation.
• Minimizing discharge air temperature
(DAT) increase is preferred.
• Space dictates.
M27325
Ideal when...
• Running DR90 opposite A/C operation.
Running with A/C operation requires
damper on the exhaust port to
minimize backdraft when DR90 is not
on but A/C is.
• Space dictates.
M27324
M24745
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