Hood Exhaust - GE JVM1490 Installation Instructions Manual

Installation Instructions
HOOD EXHAUST
NOTE: Read these next two pages tufty if you plml to vent your exhaust to the outside.
If you plml to recirculate the air back into the room, proceed to page 6.
OUTSIDE TOP EXHAUST (EXAMPLE ONLY)
The following chart describes an example ot one possible
ductwork instnllation.
DUCT P_ECES
EQUIVALENT NUMBER
LENGTH x USED
RoofCap 24 Ft. x
12 Ft.Straight Duct 12 Ft. x
(6" Round)
RectanguhFto-Round 5 Ft. x
TransitionAdaptor*
Equivalent l engthsof duct piecesare basedon actualtests and
reflect requirements for goodventingperformance with anyvent hood.
(1)
(1)
(1)
Total Length
EQUIVALENT
LENGTH
24 Ft.
12 Ft.
5 Ft.
41 Ft.
*IMPORTANT: If a rectangula_to-rotmd transition adaptor is used, the bottom corners of the damper
will ha_e to be cut to fit, usim,._ the tin snips, in order to allow free mo'.ement of the damper.
OUTSIDE BACK EXHAUST (EXAMPLE ONLY)
The following chart describes an example ot one possible
ductwork installation.
[
DUC_ PIECES
_Wall Cap
(_ 90° Elbow
EQUIVALENT NUMBER EQUIVALENT
LENGTH* x USED = LENGTH
40 Ft. x (1) 40 Ft.
3 Ft. x (1) 3 Ft.StraightDuct
3W' x 10" Rectangular)
10 Ft. x (2)
3 Ft.
20Ft.
Equivalent lengths of duct pieces are based on actual tests and
reflect requirements for good venting performance with any vent hood.
Total Length = 63 Ft.
NOTE: For back exhaust, care should be taken to align exhaust with space between studs, or wall should be prepared
at the time it is constructed by leaving enough space between the wall studs to accommodate exhaust.
4