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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
2.5 ft
(0.8 m)
90 ° elbow
5.0 ft
(1.5 m)
The maximum equivalent vent lengths are:
6" (15.2 cm) round vent - 35 ft (10.7 m)
7" (17.8 cm) round vent - 40 ft (12.2 m)
8" (20.3 cm) round vent - 50 ft (15.2 m)
9" (22.9 cm) and 10" (25.4 cm) round vents - 60 ft (18.3 m)
Example Vent System
6.
m)-_
I
Wall cap
9°°elbtw
1.8
The following example
falls within the maximum
vent length of
35 ft (10.7 m).
1 - 90 ° elbow
1 - wall cap
8 ft (2.4 m) straight
System length
= 5.0 ft (1.5 m)
= 0.0 ft (0.0 m)
= 8.0 ft (2.4 m)
= 13 ft (3.9 m)
Observe all governing codes and ordinances.
Ensure that the electrical installation is adequate and in
conformance
with National Electrical Code, ANSl/NFPA 70 (latest
edition), or CSA Standards C22.1-94, Canadian Electrical Code,
Part 1 and C22.2 No. 0-M91 (latest edition) and all local codes
and ordinances.
If codes permit and a separate ground wire is used, it is
recommended
that a qualified electrician determine that the
ground path is adequate.
A copy of the above code standards can be obtained from:
National Fire Protection Association
One Batterymarch
Park
Quincy, MA 02269
CSA International
8501 East Pleasant Valley Road
Cleveland, OH 44131-5575
•
A 120 Volt, 60 Hz., AC only, 15-amp, fused electrical circuit is
required.
•
If the house has aluminum wiring follow the procedure below:
1. Connect a section of solid copper wire to the pigtail
leads.
2. Connect the aluminum wiring to the added section of
copper wire using special connectors
and/or tools
designed and UL listed for joining copper to aluminum.
Follow the electrical connector manufacturer's
recommended
procedure. Aluminum/copper
connection must conform with
local codes and industry accepted wiring practices.
•
Wire sizes and connections must conform with the rating of
the appliance as specified on the model/serial
rating plate.
The model/serial plate is located behind the filter on the rear
wall of the range hood.
•
Wire sizes must conform to the requirements of the National
Electrical Code, ANSl/NFPA 70 (latest edition), or CSA
Standards C22.1-94,
Canadian Electrical Code, Part 1 and
C22.2 No. 0-M91 (latest edition) and all local codes and
ordinances.
INSTALLATION
INSTRUCTIONS
It is recommended
that the vent system be installed before
hood is installed.
•
Before making cutouts, make sure there is proper clearance
within the ceiling or wall for exhaust vent.
•
Check your ceiling height and the hood height maximum
before you select your hood.
•
To avoid damage or dirt, place a thick, heavy covering over
countertop,
cooktop, or range.
1. Disconnect
power.
2. Determine which venting method to use: roof or wall.
3. Select a flat surface for assembling
the range hood. Place
covering over that surface.
Excessive Weight Hazard
Use two or more people to move and install
range hood.
Failure to do so can result in back or other injury.
4. Using 2 or more people, lift range hood onto covered surface.
Tip the range hood on its back and remove filters and set
aside.
6
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