9
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 anti-siphon vent for it to drain
properly.
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
Horizontal Installation with Added Return
A. Return air from house
B. Existing return air duct
C. To existing furnace or air handler
D. Backflow damper (required)
E. Dry air to crawl space or unconditioned isolated basement
F. Manual damper (required)
G. Dehumidifier
H. Power damper (optional)
I. Outside air
J. Screened intake hood
A. Added return
B. Return air from house
C. Existing return air duct
D. To existing furnace or air handler
E. Back flow damper (required)
F. Dry air to crawl space or unconditioned isolated basement
G. Manual damper (required)
H. Dehumidifier
I. Power damper (optional)
J. Outside air
K. Screened intake hood
B
H
F
G
J
I
A
C
D
E
F
E
F
D
G
G
I
H
J
K
A
B
C
