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KitchenAid 30" Retractable Downdraft System with Interior Blower Motor Use & Care Manual

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INSTALLATION INSTRUCTIONS
Venting Methods
Determine which venting method is best for your application. 
Vent system can terminate either through the wall or floor.
Island Location
NOTE: For island locations, a front- or rear-mounted blower 
motor can also be mounted for right or left venting if needed  
for your application. Most island applications would still require 
the venting to be directed down through the floor.
Built-In Cabinet Location
Front-Mounted Blower 
Motor (Standard)
Rear-Mounted Blower Motor
A
A
A.  Down vent
B
C
A
A.  Down vent
B.  Left vent
C.  Right vent
Island Location — Vent System Installed Under  
a Concrete Slab Using PVC Sewer Pipe
Front-Mounted Blower Motor (Standard) 
Rear-Mounted Blower Motor
Calculating Vent System Length
3¼" x 10" (8.3 cm x 25.4 cm) rectangular vent is required from 
the blower motor box. It can be transitioned to 6" (15.2 cm) 
round vent if needed.
Maximum Length of Vent System
Vent
Length
6" (15.2 cm) round
35 ft (8.9 m)
3
1
/
4
" x 10" (8.3 cm x 25.4 cm)
35 ft (8.9 m)
 
 
 
 
 
 
A
B
C
D
E
F
G
H
I
J
K
L 
M
 
 
 
 
 
 
A
B
C
D
E
F
G
H
I
J
K
L 
M
A.  Wall cap
B.  6" (15.2 cm) round metal vent
C.  16" (40.6 cm) maximum
D.  6" (15.2 cm) round PVC sewer pipe
E.  6" (15.2 cm) round metal vent transition with damper (supplied)
F.  6" (15.2 cm) round PVC coupling
G. Concrete slab
H.  6" (15.2 cm) round PVC sewer pipe
I.  6" (15.2 cm) round 90° PVC sewer pipe elbow
J.  Tightly pack gravel or sand completely around pipe.
K.  6" (15.2 cm) round 90° PVC sewer pipe elbow
L.  6" (15.2 cm) round PVC coupling
M. 12" (30.5 cm) minimum