KitchenAid Architect Series II KECD807X Install Manual page 7

Calculating Vent System Length
To calculate the length of the system you need, add the
equivalent feet (meters) for each vent piece used in the system.
Vent Piece
45° elbow
90° elbow
6" (15.2 cm)
wall cap
3 " x 10" (8.3 cm x 25.4 cm)
to 6" (15.2 cm) transition
6" (15.2 cm) to 3 " x 10"
(8.3 cm x 25.4 cm) transition
3 " x 10" (8.3 cm x 25.4 cm)
to 6" (15.2 cm) 90° elbow
transition
6" (15.2 cm) to 3 " x 10"
(8.3 cm x 25.4 cm) 90° elbow
transition
3 " x 10" (8.3 cm x 25.4 cm)
90° elbow
3 " x 10" (8.3 cm x 25.4 cm)
flat elbow
3 " x 10" (8.3 cm x 25.4 cm)
wall cap
5" to 6" (12.7 cm to 15.2 cm)
transition
6" (15.2 cm) Round
2.5 ft
(0.8 m)
5.0 ft
(1.5 m)
0.0 ft
(0.0 m)
4.5 ft
(1.4 m)
1 ft
(0.3 m)
9.0 ft
(2.7 m)
5.0 ft
(1.5 m)
5.0 ft
(1.5 m)
12.0 ft
(3.7 m)
0.0 ft
(0.0 m)
1 ft
(0.3 m)
Example vent system
90˚ elbow
2 ft
(0.6 m)
1- 90° elbow = 5 ft (1.5 m)
8 ft (2.4 m) straight = 8 ft (2.4 m)
1 - wall cap = 0 ft (0 m)
System length = 13 ft (3.9 m)
NOTE: Flexible vent is not recommended. Flexible vent creates
back pressure and air turbulence that greatly reduce
performance.
Determine Range Blower Setting
This cooktop is equipped with a dual range blower. It is shipped
from the factory in the low range for most installations. If the
equivalent duct length exceeds 30 ft (9.1 m), it must be converted
to high range. Do not convert the blower to high range for shorter
lengths; this will cause excessive noise and conditioned air loss.
Convert blower before installing into countertop if necessary.
To Convert to High Range:
WARNING
Excessive Weight Hazard
Use two or more people to move and install cooktop.
Failure to do so can result in back or other injury.
1. Using 2 or more people, place cooktop on floor with front
edge and plenum down.
2. Remove the four #10 - 32 locknuts (A) that attach the blower
motor assembly to the blower exhaust scroll.
3. Remove the blower motor assembly (B) from the blower
exhaust scroll (E).
4. Slowly reach in the blower exhaust scroll opening and
remove the retainer (C).
5. Gently remove the restrictor ring (D).
6. Place the motor assembly back on the studs of the blower
exhaust scroll.
wall cap
6 ft (1.8 m)
7