Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
http://yourhome.honeywell.com
Automation and Control Solutions
® U.S. Registered Trademark.
© 2008 Honeywell International Inc.
69-2146—01 M.S. 07-08
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
Installation Recommendations and Options
SUPPLY
RETURN
AIR HANDLER
TrueDRY
M27325
A
Main Return to Main Return
M27327
E
Unducted
Ideal when…
• Running TrueDRY DH90 with A/C operation.
• Minimizing discharge air temperature (DAT) increase
is preferred.
• Space dictates.
SUPPLY
RETURN
AIR HANDLER
TrueDRY
M27324
BACKDRAFT
DAMPER
B
Main Return to Main Supply
Ideal when…
• Running TrueDRY DH90 opposite A/C operation.
Running with A/C operation requires damper on the
exhaust port to minimize backdraft when TrueDRY
DH90 is not on but A/C is.
• Minimizing DAT increase is preferred.
• Space dictates.
Ideal when…
• Drying a specific area of the house.
• Running with A/C operation requires backdraft
damper on the exhaust port to minimize backdraft
when TrueDRY DH90 is not on but A/C is.
• Minimizing DAT increase is preferred.
SUPPLY
RETURN
AIR HANDLER
TrueDRY
M27326
SEPERATE
RETURN
BACKDRAFT
DAMPER
C
Dedicated Return to Main Supply
Ideal when…
• Drying a specific conditioned or unconditioned area,
such as attic, basement, or crawl space.
• Balanced dehumidification is needed without
ventilation.
• Minimizing DAT is not a concern.
Ideal when…
• Running TrueDRY DH90 with A/C operation.
• Drying a specific area of the house.
• Minimizing DAT increase is preferred.
SUPPLY
RETURN
AIR HANDLER
M27601
TrueDRY
SEPERATE
RETURN
D
Dedicated Return to A/C Return
