Table of Contents
Advertisement
Exhaust requirements
Use this section if you plan to vent your microwave outside (top or back exhaust). If you plan to recirculate the air back into
the room, skip to "Removing your microwave" on page 9.
When installing exhaust vents:
• Use the most direct route with as few elbows/transitions as possible. This helps prevent blockages and ensures that the
exhaust is being vented correctly.
• Your microwave is designed to mate with a standard 3-1/4" × 10" rectangular duct. If a round duct is required, a
rectangular-to-round transition adapter must be used with 6" (15.2 cm) or 5" (12.7 cm) diameter round ducts.
Note: If a rectangular-to-round transition adapter is used, you must cut the bottom corners of the damper with tin snips to let the damper
have free movement.
• Elbows, transitions, and wall/roof caps add resistance to airflow. Each of these pieces are equivalent to a section of
straight duct that is longer than their actual physical size. When calculating your duct length, add the equivalent
lengths of all the pieces together. For proper airflow, the equivalent airflow should not exceed 120 ft. For example:
Example setup:
Use the "Equivalent duct length table" on page 8 to calculate the equivalent ductwork length for your setup.
Note: Equivalent lengths of duct pieces are based on actual tests and reflect requirements for good venting performance with any vent
hood.
Duct Pieces
Roof cap
90° elbow
Straight duct 6" round
OR
3-1/4" × 10" rectangular
www.insigniaproducts.com
Equivalent
Number
×
Length
Used
1
40 ft.
(
×
2
10 ft.
(
×
1
3 ft.
×
(
Total ductwork
NS-OTRC15SS9
Total
=
Equivalent
Length
40
ft.
)
=
20
ft.
)
=
3
ft.
)
=
63
ft.
=
For proper
airflow, this
number should
not exceed
120 ft.
7
Hide quick links:
Advertisement
Table of Contents
