3. INSTALL THE UNIT (CONT’D)
3.7 EXTERIOR OPENING(S) INSTALLATION (CONT’D)
3.7.2 LOCATING 2 EXTERIOR HOODS
If this unit installation needs to have 2 exterior hoods, an additional exterior hood must
be bought (sold separately, single exterior hood, part number 13940). Choose an
appropriate location for installing the exterior hoods.
• The dual exterior hood must be located at a minimum distance of 4 inches
(102 mm) from the ground.
• The single exterior hood must be located at a minimum distance of 18 inches
(457 mm) from the ground.
• There must be a minimum distance of 6 feet (1.8 m) between the hoods to avoid
cross-contamination. See figure below.
15
CAUTION
Due to its particular design, the dual exterior hood must be used only for
exhaust hood when performing an installation using 2 exterior hoods.
Use the single exterior hood for supply air.
EXHAUST
HOOD
INTAKE
HOOD
4’’
(102 MM)
6’
1.8
M)
6’
(1.8 M)
18’’
(457 MM)
4’’ (102 MM)
OPTIONAL
LOCATION
WARNING
Make sure the single exterior hood is at least 6 feet (1.8 m) away (or more, as
per applicable building codes or standards) from sources of contamination
such as:
• High efficiency furnace vent
• Any exhaust from a combustion source
• Gas meter exhaust, gas barbecue-grill
• Garbage bin
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