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GE JGP979 Owner's Manual page 22

Gas downdraft cooktop
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Installation
Instructions
[] PREPARE FOR DUCTWORK
NOTE:
Ductwork
MUST
be vented
outside.
DO
NOT
vent into
a wall, ceiling,
crawlspace,
attic or
any concealed
space.
Determine
the best route
fin" ductwork;
it can be
routed
in a variety
of ways depending
on the
kitchen
layout.
Typical
duct arrangement
countertop
series.
:;inside wall
31/4 " X 10"
cabinet
(8.2 cm x 25.4 cm)
Transition
elbow
-....
Up inside wall to roof
or overhang
Directly
to outside
Peninsula
or island
u
Between
floor joists
Peninsula
3V4" x 10" _Transition
(9.2 cm x 25.4 cm)
elbow
Through
cabinet
toe space
Optional
duct
axrmagement
under
concrete
slab.
NOTE:
PVC sewer
pipe type PSM
12454-B
Schedule
40 ASTM
D1785.
5"to
6"
6" (15 cm)
(12.7 cm to 15 cm)
Dia. 90 °
Metal transition
Metal
Elbow
6" (15 cm)
Dia. Metal
Wall cap
(t5cm) !
Dia. PVCi
coupling
,6" (15 cm)
Dia. PVC
Sewer
pipe
6" (15 cm) Dia.
6" (15 cm) Dia.
PVC Sewer pipe
Pack tightly with gravel
PVC Sewer pipe
elbow
or sand completely
elbow
around pipe.
[] GAS CONNECTION
Make
the gas
connection
to the inlet
of the pressure
regulator
on this
appliance
with a 1/2"
pipe nipple
with male
pipe thread.
Use an
approved
pipe joint
compotmd
at pipe
couuectious.
Install a manual
shut-off
wflve in the gas line in
an easily accessible
location,
as close
to the
pipe stub as possible,
making
allowances
fin.
the ventilation
ducting.
Be
StlI'e
VOtl
kuow
how
and where
to shut
off
the gas sui)ply
to the
cooktop.
NOTE:
appliance
pressure
regulator
1(2" Threaded
pipe nipple
Shut-off valve
_Pipe
stub
Instead
of using
solid piping
to connect
to
pressure
regulatm;
an approved
flexible
metal
appliance
connector
may be used between
the
pipe stttb and shut-off
wflve and
the pressm'e
regulator,
if local
codes
permit.
Al)l)ropriate
flare union
adapters
are required
at
each end
of the flexible
connector.
Turn
on the gas; check
for leaks using
a liquid
leak detector
at all joints
in the sxstem.
CAUTION:
DO NOT
USE A FLAME
TO CHECK
FOR
GAS LEAKS.
IMPORTANT--Disconnect
the cooktop
and
the
individual
shttt-off
valve fl'om the gas SUl)ply
piping
system
during
any pressm'e
testing
of that
system
at test pressures
greater
than
1½PSIG.
Isolate
the cooktop
fl'om the gas SUl)ply piping
system
by closing
the individual
manual
shut-off
wflve to the cooktop
dttring
any pressure
testing
of the gas sui)ply
piping
system
at test pressttres
eqttal
to or less than
1½PSI(;.
22

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