Installation Instructions - GE PP989DNBB - Profile 30" Smoothtop Electric Downdraft Cooktop Use And Care Manual

Calculate Total equivalent Ductwork length
Equivalent
Duct Pieces Length* x
5" round
straight 2 . 7 ft .
6" round
straight 1 ft .
3 ⁄ " x 10"
1
4
straight 1 ft .
5", 90°
elbow 37 ft .
6", 90°
elbow 12 ft .
5", 45°
elbow 18 ft .
6", 45°
elbow 7 ft .
Flexible
metal offset
adapter 34 ft .
3 ⁄ " x 10"
1
4
90° elbow 14 ft .
3 ⁄ " x 10"
1
4
45° elbow 8 ft .
3 ⁄ " x 10"
1
4
90° flat elbow 33 ft .
5" round
to 3 ⁄ " x 10"
1
4
transition 3 ft .
6" round
to 3 ⁄ " x 10"
1
4
transition 2 ft .
Subtotal Column 1 =
* Equivalent lengths of duct pieces are based on actual
tests and reflect requirements for good venting
performance with any downdraft cooktop .
† Measure and list feet of straight duct used . Count and
list the quantity of all other duct pieces for the "Number
Used" of each type .
ImPoRTANT:
For maximum efficiency, use the shortest and straightest
duct run possible, with as few fittings as possible . for
satisfactory performance, the duct run should not
exceed 100 feet equivalent length.
Venting performance is improved by using larger
diameter duct .
Installation Instructions
DuCTWoRk CAlCulATIoNs
Number Equivalent
Used = Length
x ( ft . ) = ft .
†
x ( ft . ) = ft .
†
x ( ft . ) = ft .
†
x ( ) = ft .
x ( ) = ft .
x ( ) = ft .
x ( ) = ft .
x ( ) = ft .
x ( ) = ft .
x ( ) = ft .
x ( ) = ft .
x ( ) = ft .
x ( ) = ft .
ft .
Duct Pieces
5" round
to 3 ⁄ " x 10"
1
4
transition
90° elbow
6" round
to 3 ⁄ " x 10"
1
4
transition
90° elbow
3 ⁄ " x 10"
1
4
to 6" round
transition
3 ⁄ " x 10"
1
4
to 6≤ round
transition
90° elbow
Tapered 5"
round to
6" round
transition
5" round collar
to 6" round
transition
5" round
wall cap
with damper
6" round
wall cap
with damper
3 ⁄ " x 10"
1
4
wall cap
with damper
6" round
roof cap
If flexible metal ducting is used, all the equivalent
feet values in the table should be doubled . The
flexible metal duct should be straight and smooth
and extended as much as possible .
Do NoT use flexible plastic ducting.
Vent installation should not exceed 100 feet
equivalent length .
18
Equivalent Number Equivalent
Length* x Used = Length
37 ft . x ( ) =
4 ft . x ( ) =
2 ft . x ( ) =
4 ft . x ( ) =
6 ft . x ( ) =
13 ft . x ( ) =
84 ft . x ( ) =
24 ft . x ( ) =
24 ft . x ( ) =
33 ft . x ( ) =
Subtotal Column 2 =
Subtotal Column 1 =
ToTAl DuCTWoRk =
Should not exceed 100 feet.
ft .
ft .
ft .
ft .
ft .
ft .
ft .
ft .
ft .
ft .
ft .
ft .
ft .