Kenmore 721.80042, 721.80049, 721.80043, 721.80044 Standard Fittings, Duct Length

Page 9

STEP 2:

PREPARE THE VENTING SYSTEM

STANDARD FITTINGS

NOTE: If the existing duct is round, you must use a rectangular-to-round adapter, with a rectangular 3" extension duct installed between the damper assembly and the adapter to prevent the exhaust damper sticking.

DUCT LENGTH

The total length of the duct system, including straight duct, elbows, transitions, wall or roof caps must not exceed the equivalent of 140 feet.

For best performance, do not use more than three 90 degree elbows.

Below are the standard fittings and their equivalent length in feet.

3-1/4"x10" to 6" = 5ft.

3-1/4"x10" roof cap = 24ft.

3-1/4"x10" 90 ° elbow = 25ft.

90 ° elbow = 1Oft.

3-1/4"x10" wall cap

45 ° elbow = 5ft.

3-1/4"x10" fiat elbow

 

= 40ft.

 

= 1Oft.

Figure 9

To calculate the equivalent length of each duct piece used, see the examples below.

 

 

 

 

 

Exam

)les

 

 

 

 

For 3-1/4"x10"

SYSTEMS

 

 

For

6" ROUND SYSTEMS

 

3-1/4"x10"

_

6ft. _

wall cap

90°elbows

_---

6ft. -_/wall

cap

90 ° elbow *_fr_

 

I 0_"

 

 

 

 

 

 

 

 

 

 

 

transi_

 

 

 

1 3-1/4" x 10"

90° elbow

=

25ft.

1 transition

 

=

5 ft.

2 90 ° elbows

=

20 ft.

1 wall

cap

 

 

=

40 ft.

 

 

1 wall cap

 

=

40 ft.

8 feet

straight

duct

 

=

8 ft.

 

 

8 feet straight

=

8 ft.

TOTAL

LENGTH

 

=

73 ft.

 

TOTAL LENGTH

=

73 ft.

 

 

 

 

 

 

Image 9
Contents Installationinstructions Be Sure to Read the Following Safety Instructions Your Safety FirstFor Your Safety Proper installation is the installers responsibilityTo excessive microwave energy Property damage One power cord clamp bushing Damper/duct connectorOne power cord clamp One upper cabinet template Not ActualPARTS, TOOLS, Materials Prepare Electrical Connections Power-Supply-Cord HoleAvoid Electrical SHOCK! this Appliance Must be Grounded UpperIStep Prepare the Venting System Remember AS YOU Install the VentingThis Oven Must be Properly Vented Wall Venting Roof VentingDuct Length Standard FittingsRoom Vented Installation Step Prepare the Venting BlowerElectrical Shock HAZARD! Unplug Unit Before Working on IT Wall Vented Installation Roof Vented Installation Step Prepare the VentingBlower Measure and Tack / Tape UP Template Prepare the Wall and Upper Cabinet for InstallationCabinet front filler block cabinet bottom shelf Install the Mounting Plate to the Wall Oven Must be Connected To AT Least ONE Wall StudCenter Line Install the Mounting Plate to the Wall Step Ttach the Oven to the Wall Step Attach the Oven to the Wall Memo

721.80044, 721.80043, 721.80042, 721.80049 specifications

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