GE JP989 Series How to use

C
C
PUB # 31-9055 06/00
MODEL SERIES:
TECHNICAL SERVICE GUIDE
GE Consumer ServiceTraining
Radiant Downdraft Cooktop
JP989

IMPORTANT SAFETY NOTICE
The information in this service guide is intended for use by
individuals possessing adequate backgrounds of electrical,
electronic, and mechanical experience. Any attempt to repair a
major appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible for the
interpretation of this information, nor can it assume any liability in
connection with its use.
WARNING
Toavoid personalinjury,disconnectpowerbeforeservicingthisprod-
uct. If electrical power is required for diagnosis or test purposes,
disconnect the power immediately after performing the necessary
checks.
RECONNECT ALL GROUNDING DEVICES
If grounding wires, screws, straps, clips, nuts, or washers used to
complete a path to ground are removed for service, they must be
returned to their original positions and properly fastened.
GE Consumer Service Training
Technical Service Guide
Copyright © 2000
All rights reserved.This service guide may not be reproduced in whole or in part
in any form without written permission from the General Electric Company.
!

– 1 –
Table of Contents
Cooktop Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Cooktop Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CareandCleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Unpacking Cooktop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Cabinet Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Ductwork Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Ductwork Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Cooktop Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
RemovalandReplacement . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ControlAssemblyServicing. . . . . . . . . . . . . . . . . . . . . . . . . 20
BlowerAssemblyReplacement. . . . . . . . . . . . . . . . . . . . . . . 20
CapacitorReplacement. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
HOTLight Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Glass CooktopRemovalfromCountertop. . . . . . . . . . . . . . . . . 22
HeaterReplacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
BrokenGlassReplacement. . . . . . . . . . . . . . . . . . . . . . . . . 25
Reinstalling GlassCooktop. . . . . . . . . . . . . . . . . . . . . . . . . 27
Rocking or Uneven Glass inCountertop.. . . . . . . . . . . . . . . . . 28
Illustrated Parts Breakdown . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . 32
SchematicsandStrip Circuits . . . . . . . . . . . . . . . . . . . . . . . . . 34
WarrantyInformation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

– 2 –
Cooktop Features
Feature Index (Features and appearance may vary)
1 Left Rear Surface Unit
2 Bridge Surface Unit
3 Left Front Surface Unit
4 Vent Grille
5 Vent Filter
(below the vent grille)
6 Right Rear Surface Unit
7 Dual Surface Unit
8 Model and Serial Number Label
(under the cooktop,
on the right side of the vent chamber)
9 Left Rear Surface Unit Control
10 Left Front/Bridge Surface Unit Control
11 Left Side HOT Surface Indicator Lights
(one for each
surface unit)
12 Bridge Select
13 Vent Fan Speed Control
14 Coil Size Select
15 Right Side HOT Surface Indicator Lights
(one for each
surface unit)
16 Dual Surface Unit Control
17 Right Rear Surface Unit Control
18 Surface Unit ON Indicator Light
Throughout this manual, features and appearance may vary from the customer’s model.
ON
OFF
5
2
3
4
9
6
7
8
1
HI
LO
OFF
5
2
3
4
9
6
7
8
1
HI
LO
OFF
5
2
3
4
9
6
7
8
1
HI
LO
OFF
5
2
3
4
9
6
7
8
1
HI
LO
HOT HOT
OFF
MED
HI
LO
B
R
I
D
G
E
C
O
I
L
S
I
Z
E
GEA00181
ON
OFF
5
2
3
4
9
6
7
8
1
HI
LO
OFF
5
2
3
4
9
6
7
8
1
HI
LO
OFF
5
2
3
4
9
6
7
8
1
HI
LO
OFF
5
2
3
4
9
6
7
8
1
HI
LO
HOT HOT
OFF
MED
HI
LO
B
R
I
D
G
E
C
O
I
L
S
I
Z
E
GEA00182

– 3 –
Cooktop Controls
Radiant Surface Units
The control for the radiant surface unit can be set any-
where between LO and HI for an unlimited number of
heat settings.With the infinite switch, the coil cycles on
and off to maintain the selected control setting.
The surface unit’s ON indicator light will glow when any
surface unit is on.
Note: The surface unit’s ON indicator light may glow
between the surface control settings of LO and OFF, but
there is no power to the surface units.
The HOT surface indicator lights will glow when any
radiant element is turned on, and will remain on until the
surface is cooled to approximately 150°F.
Dual Surface Unit
To use the large (9-in.) surface unit, turn the COIL SIZE
knob clockwise to the 12 o’clock position.Push the
control knob in and turn it to the desired setting.The unit
will heat the entire area inside the larger circle.
To use the small (6-in.) surface unit, turn the COIL SIZE
knob counterclockwise to the 10 o’clock position.Push
the control knob in and turn it to the desired setting.The
unit will only heat the area inside the smaller circle.
Bridge Surface Unit
Make sure the pan rests flat on the glass cooktop.
When the burner select knob points to the 12 o’clock
position, the control knob controls the left front surface
unit only.
When the burner select knob points to the 1 o’clock
position, the control knob controls both the left front
surface unit and the bridge area.Choose pans that
match the circle/bridge area as closely as possible.
The customer can create an oblong heated area by
using the left rear unit in addition to the front unit bridge
combination.
ON
OFF
5
2
3
4
9
6
7
8
1
HI
LO
HOT
Be sure you turn the control knob to
OFF when you finish cooking.
GEA00183
OFF
5
2
3
4
9
6
7
8
1
HI
LO
C
O
I
L
S
I
Z
E
Large 9"
surface unit
setting
Small 6"
surface unit
setting
GEA00184
OFF
5
2
3
4
9
6
7
8
1
HI
LO
B
R
I
D
G
E
Front
Burner and
Bridge
Front Burner
only
GEA00185

– 4 –
Temperature Limiter
Every radiant surface unit has a temperature limiter.The
temperature limiter protects the glass cooktop from
getting too hot.
The temperature limiter may cycle the units off for a time
if:
• The cooktop is on while cooking.
• The pan boils dry.
• The pan bottom is not flat.
• The pan is off center.
• There is no pan on the unit.
How to Operate theVent System
To operate the downdraft vent system, turn the vent fan
speed control knob to HI, MED, or LO, as needed.
OFF
MED
HI
LO
GEA00186

– 5 –
Care and Cleaning
Radiant Surface Units
The radiant cooktop features heating units beneath a
smooth glass surface.
Do not store heavy items above the cooktop. If they drop
onto the cooktop, they can cause damage.
Do not use the surface as a cutting board.
A slight odor is normal when a new cooktop is used for
the first time.The odor is caused by the heating of new
parts and insulating materials, and will disappear in a
short time.
On models with a white glass cooktop, it is normal for
the surface to appear discolored when it is hot.This is
temporary and will disappear as the glass cools.
The surface unit will cycle on and off to maintain the
selected control setting.
It is safe to place hot cookware from the oven or surface
on the glass surface when the surface is cool.
Water stains (mineral deposits) are removable using the
cleaning cream or full-strength white vinegar.
Window cleaner may leave an iridescent film on the
cooktop.The cleaning cream will remove this discolora-
tion.
Daily Cleaning
WARNING: Be sure electrical power is off and all sur-
faces are cool before cleaning any part of the cooktop.
Use only a recommended cleaning cream, such as the
Cerama Brite brand or the Cooktop Cleaning Cream
brand, on the glass cooktop.
To maintain and protect the surface of the glass cooktop,
follow these steps:
• Before using the cooktop for the first time, clean it
with cleaning cream.This helps protect the top and
makes cleanup easier.
• Clean the surface with cleaning cream after each
use.
• Rub a few drops (less is better) of the cleaning
cream onto soiled areas using a damp paper towel.
Buff with a dry paper towel until all soil and cream
are removed.
SURFACE
COOKING
OFF CENTER
DRAGGING
Never cook directly on the glass.
Always use cookware.
Always place the pan in the center of
the surface unit you are cooking on.
Do not slide cookware across the
cooktop because it can scratch the
glass. The glass is scratch resistant,
not scratch proof. GEA00227

– 6 –
Note: On models with a white glass cooktop, any grease
spatter or greasy residue from a dish towel will burn on
the cooktop when the surface units are heated, leaving a
brown stain.This can be removed with the cooktop
cleaning cream and the razor scraper.To avoid this
brown discoloration, remove any spatter with paper
towels and cooktop cleaning cream before heating any
surface unit.
Heavy, Burned-On Soil
1. Allow the cooktop to cool.
2. Apply a few drops (less is better) of cleaning cream
to the cool, soiled area. Spread the cream across the
entire soiled area.
3. Hold scraper at a 45° angle against the glass ce-
ramic surface.This 45° angle makes the scraping
easier.
Caution: Be sure to use a new sharp razor scraper. Do
not use a dull or nicked blade.
4. Scrape soil with the enclosed razor scraper. Keep a
small amount of cream on the soil as you scrape.
Heavily soiled areas may require repeated applica-
tions of cream. It will be necessary to press down on
the razor scraper while scraping the soiled area with
cooktop cream.
5. If any soil remains, repeat the steps listed above.
To order more cream and/or scrapers for cleaning the
glass cooktop, please call our toll-free number:
National Parts Center..............................800-626-2002
Cleaner ....................................................... #WX10X300
Scraper....................................................... #WX5X1614
Cream Scraper Kit................................... #WB64X5027
Special Care for Sugary Spills
Caution: Be sure to use a new sharp razor scraper. Do
not use a dull or nicked blade.
Sugary spills (such as jellies, fudge, candy syrups) or
melted plastics can cause pitting of the surface of your
cooktop unless the spill is removed while still hot.This
pitting damage is not covered by the warranty.Special
care should be taken when removing these hot sub-
stances.
1. Turn off all surface units affected by the spill. Re-
move hot pans.
2. Wearing an oven mitt, hold the razor scraper at a 45°
angle to the cooktop. Scrape the hot spill to a cool
area outside the surface unit.
3. With the spill in a cool area, use a dry paper towel to
remove any excess. Any remaining spillage should
GEA00192
Using a razor scraper will not
damage the surface if the 45 angle
is maintained.

– 7 –
Vent Filter
Vent
Chamber
GEA00190
GEA00189
Flat
Molded flat area
GEA00191
Remove and replace the filter diagonally through the
vent opening.
When replacing the filter, make
sure it rests, at an angle, on the
supports in the vent opening.
Latch it in place.
be left until the surface of the cooktop has cooled.
Do not continue to use the soiled surface unit until all
of the spillage has been removed. Follow the steps
under Heavy, Burned-On Soil to continue the
cleaning process.
Caution: If pots with a thin overlay of aluminum, copper,
or enamel are allowed to boil dry, the overlay may bond
with the glass cooktop and leave a black discoloration.
This should be removed immediately before heating
again or the discoloration may be permanent.
Vent System
WARNING: Before cleaning the vent grille, be sure the
exhaust blower is turned off.
To clean the vent grille,
remove it from the cooktop by
lifting it up and off.Wipe the vent grill with a damp cloth.
If necessary, the vent grille can be washed in the sink.
Use dishwashing liquid for cleaning. Do not use abrasive
cleaners, they will damage the vent grille’s finish.
Do not clean the vent grille in the dishwasher.
To clean the vent chamber,
use hot, soapy water. Do
not use abrasive cleaners, they will damage the vent
chamber’s finish.
Vent Filter
Caution: Do not operate the vent without the filter in
place.
The filter is held in place with a metal latch. Move the
latch up in either direction and lift the filter diagonally up
and out of the vent opening.
Clean the filter by swishing it in hot, soapy water. Rinse
well and dry thoroughly.
To order filters, please call our toll-free number:
National Parts Center..............................800-626-2002
Filter ...................................................... # WB02X10651
Control Knobs
The control knobs may be removed for easier cleaning.
Before removing the knobs for cleaning, be sure they are
in the OFF position.When replacing the knobs, check
the OFF position to insure proper placement.
Wash knobs in soap and water, but do not soak them.
Avoid getting water into the knob stem holes.
The knob stem is flat on one side (see illustration).
Check the inside of the knob and find the molded flat
area.
Replace the knob by fitting the molded flat area inside
the knob onto the flat area of the stem.

– 8 –
Installation Requirements
Before you begin, read these instructions
completely and carefully.
Note: Save these instructions for local inspector’s
use.
• Observe all governing codes and ordinances.
• Installation of this unit requires 2 people. Do not
attempt to install without assistance.
• This appliance must be properly grounded.
Tools and MaterialsYouWill Need:
•Saw
• Flat blade screwdriver
• Electrician’s pliers
• Duct tape
• Measuring tape or scale
• Carpenter’s square
• Wrench or socket set
• Drill and drill bit
• Sheet metal screws
• Junction box*
• 1/2 in.flexible conduit*
• Electrical cable per local code*
• Wire nuts*
• Duct work
*Note: Electrical installation kit JXCK89 may be
ordered separately and includes all the parts
necessary to connect the cooktop to typical rough-
in wiring.
Electrical Requirements
WARNING: For personal safety, remove house fuse
or circuit breaker before beginning installation.
This appliance must be supplied with the proper
voltage and frequency, as listed in these Installa-
tion Requirements, and connected to an indi-
vidual, properly grounded branch circuit, protected
by a 40-amp circuit breaker or time-delay fuse.
All wire connections must be made in accordance
with local codes and properly insulated. Check
with your local utility for governing electrical codes
and ordinances. In the absence of local electrical
codes, the National Electrical Code, ANSI/NFPA
No. 70–Latest Edition, governing electric range
installations, must be followed.
A copy of the National Electrical Code can be
obtained by writing to:
National Fire Protection Association
Batterymarch Park
Quincy, MA 02260
Effective January 1, 1996, the National Electrical
Code requires that new, but not existing, construc-
tion utilizes a four-conductor connection to an
electric range.When installing an electric range in
new construction, follow the instructions in New
Construction and Four-Conductor Branch
Circuit Connection.
You must use a three-wire, single-phase AC
208Y/120-Volt or 240/120-Volt, 60-Hertz electrical
system with separate ground.If you connect to
aluminum wiring, properly installed connectors
approved for use with aluminum wiring must be
used.
21 "
78
20 "
12
19"
6"
Dia.
Nomenclature
(on other side)
Mini-manual
located behind
cover
29 "
78
6"
28 "
78
30
"
Cooktop (Dimensions for reference only) Unit must be vented to the outside!
GEA00193

– 9 –
Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney)
of fuel-burning equipment to prevent back drafting. Follow the heating equipment manufacturer’s
guidelines and safety standards such as those published by the National Fire Protection Associa-
tion (NFPA), the American Society for Heating, Refrigeration and Air Conditioning Engineers
(ASHRAE), and the local code authorities.
Note: The exhaust blower output is approximately 400 CFM (cubic feet per minute) without ductwork.
Each installation is different and ductwork affects blower output accordingly.Actual blower exhaust CFM
can be approximated using the graph below.
Step 1: Calculate the “equivalent duct length” using Table 1 on page 13 of these instructions for
your installation.
Step 2: Find the approximate intersection point of the blower exhaust performance curve with the
equivalent duct length to estimate the actual maximum blower output for your installation.
Examples: 50 equivalent ft of ductwork have approximately 320 CFM. 100 equivalent ft of ductwork
have approximately 265 CFM.
6 in. Diameter Equivalent Duct Length
JP989 Downdraft Cooktop Exhaust Blower CFM
Air Flow (CFM)
450
400
350
300
250
200
150
100
50
00 25 50 75 100 125 150
GEA00303
6-in. Diameter Equivalent Duct Length

– 10 –
Parts Included:
• (2) Hold-down retainers and screws
• Blower discharge duct transition to 6-in.round
pipe
• (3) Sheet metal screws
• Foam gasket tape (9-ft.roll)
• Vent grille
• Cleaning cream
• Cleaning Scraper
Unpacking Cooktop
Blower Discharge
Transition Duct
Hold-down Retainers
and Screws Vent Grille
Cleaning Cream Cleaning Scraper
Sheet Metal
Screws
Note: Leave the
cooktop resting
on the cardboard
sleeve until ready
to install in the
cabinet.
CAUTION:
DO NOT LIFT FROM
VENT OPENING
Foam Gasket Tape
CAUTION: GLASS IS FRAGILE
DO NOT BUMP EDGE OF GLASS
DURING INSTALLATION
GEA00304
(Packed in Cardboard
Sleeve)

– 11 –
Cabinet Preparation
Step 1 – Preparing for Installation
Positioning the cooktop
The cooktop is designed to look best when cen-
tered in a cabinet its same width.
The exhaust vent beneath the cooktop must be
located between wall studs or floor joists so that
ductwork may be installed properly.
At least 6 in. must be allowed between side edges
of cooktop and adjacent walls.
Avoid placing cabinets above the cooktop unit, if
possible, in order to reduce the hazards caused by
reaching over heated surface units.If cabinets are
placed over the cooktop, the risks can be reduced
by installing a range hood that projects horizon-
tally a minimum of 5 in. beyond the bottom of the
cabinets.
If cabinetry is used above cooktop, allow a mini-
mum 30-in. clearance between the cooking sur-
face and the bottom of any unprotected cabinet.
If clearance between cooktop and cabinetry is less
than 30-in., cabinet bottom must be protected with
flame-retardant millboard at least 1/4-in. thick,
covered with 28-gauge sheet steel or 0.020-in.
thick copper. Clearance between cooktop and
protected cabinetry must never be less than 24 in.
Exception: Installation of a listed microwave oven
or cooking appliance over the cooktop shall con-
form to the installation instructions packed with
that appliance.
A 15-in. minimum must be kept from the side edge
of cooktop to the bottom of any cabinet not directly
above cooktop. If clearance is less than 15 in.,
adjacent cabinets should be at least 6 in. from
side edges of cooktop.
Step 2 – Preparing the Base Cabinet
This cooktop is designed to fit easily into a variety
of cabinets.However, some cabinets may require
modifications.
Preparing a cabinet that is against a wall
In some cabinets, the sides may need to be
scooped or cut down 5-3/4 in.as shown, and the
corner braces need to be removed in order to
accommodate the unit.
In 75-cm and 90-cm frameless European cabi-
nets, the back panel may need to be cut down
5-3/4 in. to accommodate the unit.
Preparing a peninsula- or island-type cabinet
In a peninsula- or island-type cabinet, the sides
may need to be scooped or cut down, and the
corner braces need to be removed in order to
accommodate the unit.
Step 3 – Rough Preparation of Junction Box
WARNING: For personal safety, remove house
fuse or open circuit breaker before preparing
junction box.
Install an approved junction box within shaded
area shown in diagram. Junction box must be at
least 10-1/2 in. below the top of the cabinet.
Run conductors from residence wiring to junction
box according to local electrical codes.
30" 15"
1/2" Flat area
for support
6" Min. to
side wall
112"
GEA00195
534"
Approx.
534" Approx.
for European
cabinets
GEA00196
16 "
9" 4"
20"
1012"
C
L
GEA00197

– 12 –
Step 4 – Preparing the Countertop
Clearance between inside front of cabinet and rear
of countertop cutout must be 20-5/8 in. in order to
accommodate cooktop depth.
A 1/2-in.-wide flat area is required around the
edge of the opening to support the unit.The
cooktop unit must be level and sit squarely into the
countertop opening.
Carefully cut countertop opening according to the
dimensions shown in the illustration.Be sure the
opening is cut squarely, with sides parallel to each
other and rear exactly perpendicular to sides.
Step 5 – Preparing for Ductwork
Note: Ductwork must be vented to outside. Do
not vent into a wall, ceiling, crawl space, attic, or
other concealed space.
• When cutting or drilling into wall or ceiling, do
not damage electrical wiring or other hidden
utilities.
Cut hole in cabinet wall or floor as appropriate for
your installation.Make sure exhaust duct is lo-
cated between wall studs or floor joists.
Step 5A – Blower to Ductwork Alignment
In general, the use of flexible ducting is discour-
aged because it can cause severely restricted
airflow.However, if the blower outlet and the floor
or wall duct location do not align well, then flexible
metal ducting can be used to adapt to an offset.
Good alignment without use of flexible ducting is
best.
Note: Do not exceed the maximum recommended
offset of 6 in.
• Do not allow the flexible ducting to kink or
collapse.
• Do stretch the flexible ducting as much as
possible to eliminate as much of the corrugation
as possible.
Step 5B – Determine Flexible Ducting’s
Equivalent Length
1. Measure the actual amount of offset (maxi-
mum of 6 in. is recommended).The effect
upon airflow is dependent upon the amount of
offset.
2. Calculate the equivalent ducting allowances
using:
(___ in. offset) x (5 ft. per inch)
= ___ ft. equivalent length
3. Enter the calculated value into Table 1 of
Ductwork Calculations.
4. Ensure that the total equivalent length of
ducting does not exceed the maximum recom-
mendation of 100 ft.
918"834"
1018"
618"
Rear Wall Venting Downward Venting
GEA00201
2058"
238" Min.
25" 2878"
GEA00199
2058"238" Min.
GEA00198
6" Max.
Centerline
to Centerline
Offset
(Requires Kit JXRW89)
GEA00305
Bottom Venting Back Venting

– 13 –
Ductwork Calculations
Note: Do not use flexible plastic ducting.
If flexible metallic ducting is used, all the equiva-
lent feet values in the table should be doubled.
The flexible metallic duct should be straight,
smooth, and extended as much as possible.
Vent installation should not exceed the equivalent
ductwork length of 100 ft.
Blower is rated at 400 CFM at 0.1 inch of water
back pressure.
*Equivalent lengths of duct pieces are based on actual tests
and reflect requirements for good venting performance with
any downdraft cooktop.
†Measure and list feet of straight duct used. Count and list
the quantity of all other duct pieces for the “Number Used”
of each type.
Note: For maximum efficiency, use the shortest
and straightest duct run possible, with as few
fittings as possible.
For satisfactory performance,
the duct run should not exceed 100 ft equivalent
length.
Venting performance is improved by using larger
diameter duct.
Equivalent Number Equivalent
Duct Pieces Length* x Used = Length
6" round
to 3
14
" x 10"
transition
90 elbow 20 ft. x ( ) = ft.
3
14
" x 10"
to 6"round
transition 5 ft. x ( ) = ft.
3
14
" x 10"
to 6"round
transition
90 elbow 12 ft. x ( )= ft.
6"round
wall cap
with damper 21 ft. x ( ) = ft.
3
14
" x 10"
wall cap
with damper 27 ft. x ( ) = ft.
6"round
roof cap 20 ft. x ( ) = ft.
6"round
roof vent 24 ft x ( ) = ft.
Subtotal Column 2 = ft.
Subtotal Column 1 =
Should not exceed 100 feet.
ft.
TOTAL DUCTWORK =
ft.
GEA00203
TABLE 1
Calculate Total Equivalent Ductwork Length
Equivalent Number Equivalent
Duct Pieces Length*x Used = Length
6" round
straight 1 ft. x ( )= ft.
3
14
" x 10"
straight 1 ft. x ( ) = ft.
6", 90
elbow 15 ft. x ( ) = ft.
6", 45
elbow 9 ft. x ( )= ft.
Flexible
Metal Offset See Calculations
Adapter in Steps 5A and 5B ft.
3
14
" x 10"
90 elbow 16 ft. x ( ) = ft.
3
14
"x 10"
45 elbow 5 ft. x ( )= ft.
3
14
" x 10"
90 flat elbow18 ft. x ( )= ft.
6" round
to 3
14
"x 10"
transition 7 ft. x ( ) = ft.
Subtotal Column 1 = ft.
GEA00202

– 14 –
Ductwork Installation
Step 6 – Installing the Ductwork
Note: Local building code must be followed in
specifying approved type and schedule of all duct
used.
Use galvanized or aluminum duct in 6-in. round or
3-1/4-in. x 10-in. size, or a combination of both.
PVC duct should be used if installing under a
poured concrete slab.
Always use an appropriate roof or wall cap with a
damper. Laundry-type wall caps should never be
used.
Install ductwork, making male-female connections
in the direction of airflow as shown.Secure all
joints with sheet metal screws and duct tape to
assure an airtight seal.
Use the shortest and straightest duct run possible.
For satisfactory performance, the duct run should
not exceed the equivalent ductwork length of 100
ft. Use Table 1 to calculate the total equivalent
length of the ductwork.
Optional Installation: RearWallVenting
Rear wall venting requires a special offset duct
adapter (JXRW89) that is not included with your
cooktop.This adapter has a 5-in. diameter outlet
for rear wall and retrofit installations.
A 5-in.round duct may be used on short duct runs
of 3 ft or less, such as direct to outside wall venting.
To convert blower exhaust direction, remove
7/16-in. nuts (behind the filter) that hold blower
and wire finger guard. Remove blower and install
Special Offset Adapter Kit JXRW89 with sheet
metal screws.
Rotate blower and reinstall to vent chamber, as
shown above. Retighten nuts, but do not over-
tighten.
Thru Cabinet Toe Space Between Floor Joist
Downward Venting
GEA00204
Duct Tape Over Seam
and Screw
Air Flow
Screw
GEA00205
Inside Wall to Roof Direct to Outside
Rear Wall Venting
GEA00206
4 Nuts
Behind Filter
required)
(7/16"socket
GEA00306

– 15 –
Step 7 – Installing the Foam Gasket
Caution: Do not install the cooktop into the
countertop without installing the foam gasket, as
shown below.The foam gasket protects the bot-
tom edge of the glass from the countertop and
seals the cooktop to protect it from spills.
Start with the cooktop on the cardboard base with
all four sides easily accessible.
Locate the foam gasket tape included with
the cooktop.
Peel off the white backing to install the foam
gasket tape on the bottom side of the cooktop
glass, as shown below.
Foam Gasket Installation Notes:
• The foam gasket tape should be installed
within 1/8 in. of the edge of the glass.Do not
stretch or twist the foam gasket tape.
• Use care not to stretch the foam gasket tape
while it is installed or it will not stay in place.
• Do not place foam gasket tape over the four
metal mounting brackets.
• Butt the foam gasket tape ends together at each
corner without overlapping.
• Trim the foam gasket tape to length without
stretching.
• Mitre cut outside corners of foam gasket tape
slightly if necessary for appearance.
• Do not scratch the glass while cutting the foam
gasket tape.
GEA00307
GEA00308
GEA00309
GEA00310
Underside of Glass
18
"max. to
Glass Edge
Foam Gasket
Tape
Do not tape
over four
metal
brackets

– 16 –
Step 8 – Installing the Cooktop
Place the vent grille in position on the glass top
vent opening.Remove the tape holding the card-
board base to the bottom of your cooktop.
Caution: Do not use the glass top vent opening to
lift or move the cooktop into position.
Using two people, lift the cooktop by the glass side
edges as shown. Remove the cardboard base.
Lower the cooktop into the countertop opening,
guiding it into position until the glass is approxi-
mately 1/2-in. above the countertop surface.
Carefully remove your fingers one corner at a time
to lower the cooktop into position.
Note: Do not use Silicone RTV or caulk to bond
cooktop glass to countertop.
GEA00208
Step 9 – Checking for Flatness
Inspect the cooktop glass for rocking or uneven
gap on all four sides at the countertop surface.Do
not attempt to force the glass to meet the
countertop.
Note: If the cooktop edge is perfectly flat with the
countertop surface, skip to Step 10.
If there is rocking or an uneven gap, use a 1/4-in.
nut driver to loosen the 18 sheet metal screws on
the bottom panels of the cooktop while it is still in
the countertop.
Loosen each bottom panel screw 1 or 2 turns.
After all 18 screws are loosened, recheck the
cooktop for flatness with the countertop surface.
Gently bump your hand along the outside edge of
the cooktop if needed to help the edge settle
evenly onto the countertop surface.
Retighten all 18 sheet metal screws.
Grounding Specifications:
Ground Path Resistance: 0.10 Ohm Max.
Insulation Resistance: 250K Ohm Min.
Cooktop Installation
CAUTION:
DO NOT LIFT
FROM VENT
OPENING
GEA00311
Check for
uneven gaps
GEA00209
Loosen
screws
1-2 turns
Loosen
screws
1-2 turns
GEA00210

– 17 –
Step 11 – Attaching the BlowerTransition
Duct
Use the blower transition duct that is packed with
your cooktop for all downward duct installations to
connect to 6-in. round standard ductwork.
Note: Use Rear Wall Adapter Kit JXRW89 for duct
installations through the rear cabinet wall and
retrofits of older 5-in. duct size cooktops.
Remove the cardboard packing in the blower
outlet.
Install the transition duct to the blower outlet with
the 3 sheet metal screws that are provided.
Step 12 – Connecting the Ductwork
Connect the ductwork prepared in Steps 5 and 6
to the blower transition duct.
Step 10 – Installing the Hold-Down
Retainers
Note: Check for glass flatness discussed in Step 9
before installing hold-down retainers.
Secure cooktop to the counter using the side
retainers and thumb screws shipped with the unit
(one on each side).
Hold-down retainer
Thumb screw
Countertop
GEA00211
Screws
Screw
(on other side)
GEA00212
Use slot position
appropriate for
countertop thickness
Hold down
retainer
GEA00312

– 18 –
Feed the power supply
leads through the
conduit; be sure to
leave enough length
to properly connect
these leads to the
cooktop power leads.
Thread the leads
through an anti-short
bushing and firmly seat
the anti-short bushing
in the end of the
conduit.
Feed the leads through
the hole in the wire
compartment.
Lay the conduit against
the side of the wire
compartment.
Place the clamp over
the conduit. Make sure
the bushing is fully
seated against the
stop tab in the clamp.
Tighten the clamping
screw until the
clamping tab is fully
seated against the
wire compartment.
When complete,
reinstall the wire com-
partment cover.
Step 13 – Before Making Electrical
Connections
Note to Electrician: The power leads supplied
with this appliance are U.L. recognized for connec-
tion to large-gauge household wiring.
The insulation of these leads is rated at tempera-
tures much higher than the temperature rating of
household wiring.The current-carrying capacity of
a conductor is governed by the wire gauge and
the temperature rating of the insulation around the
wire.
Aluminum Wiring
WARNING: Improper connection of aluminum
house wiring to the copper leads can result in
serious problems.
Attach copper wires to aluminum wiring using
special connectors designed and U.L. listed for
joining copper to aluminum. Follow the connector
manufacturer’s recommended procedure closely.
Service Loop
Leave a loop in the wires to the cooktop so the
cooktop can be lifted 12 in. without having to
disconnect the wiring.
Electrical Requirements*
Model # Voltage Frequency kW
JP989 120/240 V 60 Hz 8.8 kW
120/208 V 60 Hz 6.7 kW
*For reference only.Verify with product rating plate.
Step 14 – Install 1/2-in. Flexible Conduit
With Supplied Clamp
Note: A clamp has
been included with the
cooktop for installing
the 1/2-in. flexible
conduit.
Remove the screws
holding the wire
compartment cover
and remove the cover.
Remove the clamping screw
and the clamp.
Clamp
Stop Tab
Clamping
Screw Clamping Tab
Alternate
External
Ground
Screw
GEA00213
Power Supply
Leads
Bushing (Fully Seated)
Anti-Short
Bushing Conduit
GEA00214
GEA00215
Clamp
Stop Tab
Clamping
Tab
GEA00216
Clamping
Screw
Clamping
Tab
GEA00217
Electrical Installation
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