GE Monogram ZV850 Installation Instructions Manual page 8

Installation Preparation
36" Island Vent Hood
s1
Advance
Planning
(continued)
• Arrange cross flatning in tile ceiling to suit
tile existing structure. See examples.
- Secure each 2 x 4 block with at least four (4),
#10 wood screws, 3" long (minimum size
screws, not supplied). Use 8 wood screws
total for tile two supports.
• The cross framing must be accurately
aligned to assure correct positioning of
the hood.
• The cross framing must be level in all
directions. Check with a spirit level and
adjust if necessary.
IMPORTAN#The ceiling structure must be capable of supporting
the weight of the hood(approximately 100 pounds)and any
inadvertent usercontact loads. It is recommendedthat the hood
support frame be supported by a minimum of 2 x 4 cross framing.
Cross Framing
b,
Ceil
Joist _ _Hood
Support
-- _ Frame
Opening
1 :t
UpperHalf
OfSupport
Frame
Height ....
Adjustment
Slot
Ductwork
• Use tile shortest and suaightest duct route
possible. For satisfactory performance, duct
run should not exceed 100 feet equivalent
length for any duct configuration.
• Refer to "Duct
Fittings"
chart to
compute
tile
maxilnum permissible length for duct rtms
to tile outdoors.
• This vent hood
must
use 6" round duct. Tile
6" round duct can transition to 3-1/4" x 10"
or 3-1/4" x 12".
• Install tile house ductwork to run
horizontally between ceiling joists
or suaight tap through tile roof.
Finish the Ceiling
Finish tile ceiling surface. Be sure to mark
locadon of the ceiling joists and cross flaming.
Check to be sure that ceiling is level, use shims
if necessary.
• ....... I
i i
i i
i i
i
G"
Ceiling Joint
........ )_ 2x4
Vent Straight Up
Through T heCeiling
DuctElbow
2
Standing
VentBetween
Ceiling Joists