3.Attach ³⁄₄" PVC pipe to the condensate drain outlet. See “Location Requirements.”
4.Run the PVC pipe to an outdoor drain. Any horizontal run of drain pipe must have an
5.If needed, install a condensate pump kit (optional).
6.Using a 10" duct, attach the discharge air supply on the dehumidifier to the return air supply on the existing furnace or air handler.
NOTE: Install ductwork in accordance with NFPA 90B Standard for the Installation of Warm Air Heating and Air Conditioning Systems (latest edition) and any local codes.
7.Attach the return air supply on the dehumidifier to the return air supply on the existing furnace or air handler near the return air grille.
NOTE: Do not draw air directly from the kitchen, bathroom, laundry room or unconditioned isolated basement.
8.Attach insulated flexible duct to the discharge air supply on the dehumidifier.
9.Run duct to the basement or crawl space of the building.
Horizontal Installation
A 
B
G
JI
H
FF
C
D
E
A. Return air from house | D. Backflow damper (required) | H. Power damper (optional) |
B. Existing return air duct | E. Dry air to crawl space or unconditioned isolated basement | I. Outside air |
C. To existing furnace or air handler | F. Manual damper (required) | J. Screened intake hood |
| G. Dehumidifier |
|
Horizontal Installation with Added Return
A
B 
C
K
J
I
GH
G
D
E
F
A. Added return | E. Back flow damper (required) | I. Power damper (optional) |
B. Return air from house | F. Dry air to crawl space or unconditioned isolated basement | J. Outside air |
C. Existing return air duct | G. Manual damper (required) | K. Screened intake hood |
D. To existing furnace or air handler | H. Dehumidifier |
|
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