Roof Venting
A
B
A. Roof cap
B. 10" (25.4 cm)
round vent
Typical In-line Blower Motor System
Venting Installations:
C
D
B
A
A
A. 10" (25.4 cm) round vent
B. Mount on top of ceiling joists.
C. Roof caps
D. Plywood (optional on
some installations)
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
Equivalent Length
45° elbow
2.5 ft (0.8 m)
90° elbow
5.0 ft (1.5 m)
The maximum equivalent vent lengths are:
10" (25.4 cm) round vent - 60 ft (18.3 m)
6
Wall Venting
B
A
A. Wall cap
B. 10" (25.4 cm)
round vent
E
D
F
G
H
E. Mount on underside of roof rafters.
F. Mount from cross-members
tied to trusses.
G. Duct horizontal; mount to
crossmembers tied to trusses.
H. Wall cap
Example Vent System:
90 elbow
2 ft
(0.6 m)
The following example falls within the maximum recommended
vent length.
1 - 90° elbow
1 - wall cap
8 ft (2.4 m) straight
Length of system
Electrical Requirements
Observe all governing codes and ordinances.
A
Ensure that the electrical installation is adequate and in
conformance with National Electrical Code, ANSI/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.
A
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
8501 East Pleasant Valley Road
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/rating 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, ANSI/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.
6 ft (1.8 m)
= 5.0 ft (1.5 m)
= 0.0 ft (0.0 m)
= 8.0 ft (2.4 m)
= 13.0 ft (3.9 m)
1 Batterymarch Park
Quincy, MA 02169-7471
CSA International
Cleveland, OH 44131-5575
Wall cap