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Fire Hazard
Thisdowndraft cooktop mustbeconnected
to aregulated g assupply.
LP. gas supply must NOT exceed 14-inch
water column pressure.This must be
checked by a qualified technician before
installing this cooktop.
Do Not use an open flame to test for leaks
from gas connections.
New A.G.A. design-certified flexible gas line
should be used when codes permit.
Failure to follow these instructionscould
result in an explosion, fire or personal injury.
This installation must conform with all local
codes and ordinances. In the absence of local
codes, installation must conform with
American National Standard, National Fuel
Gas Code ANSI Z223.1 -- latest edition** and
all local codes and ordinances.
Copies of the standards listed above may be obtained
from:
** American Gas Association
1515 Wilson Boulevard
Arlington, Virginia 22209
Input ratings shown on the model/serial rating
plate are for elevations up to 2,000 feet
(609.6 m). For elevations above 2,000 feet
(609.6 m), a 4 percent reduction of the rating
is required for each 1,000 feet (304.8 cm) in
elevation. For assistance when installing the
cooktop at higher elevations, contact your
local service company.
Type of gas: This downdraft cooktop is factory
set for use with Natural gas. It is design-
certified by the American Gas Association
(A.G.A.) for Natural or L.P. gas usage with
appropriate conversion. (See "Gas
conversion" instructions, Page 7). The
model/serial rating plate (located on the right
side of the downdraft plenum) lists the type of
gas that can be used. If the type of gas listed
does not agree with the type of gas available,
check with the local gas supplier. Conversion
must be done by a qualified service
technician.
Gas supply line: With Natural gas, provide a
gas supply line of 3/4" rigid pipe to the
downdraft cooktop location. With L.P. gas,
piping or tubing can be 1/2" minimum. A
smaller size pipe on long runs may result in
insufficient gas supply. Usually, L.P. gas
suppliers determine the size and materials
used on the system.
Pipe-joint compounds made for use with L.P.
gas must be used.
Flexible metal appliance connector: If local
codes permit, a new A.G.A. design-certified,
4-5 foot (1.2-1.5 m) long, 1/2" or 3/4" I.D.,
flexible metal appliance connector is
recommended for connecting the cooktop to
the gas supply line. A 1/2" male pipe thread is
needed for connection to pressure regulator
female pipe threads. Do Not kink or damage
the flexible metal tubing when moving the
downdraft cooktop.
connection to the downdraft
cooktop. All strains must be removed from the
supply and fuel lines so cooktop will be level
and in line.
shutoff
valve
"open"
position
to downdraft
cooktop
to gas
supply
Shutoff valve: The supply line must be
equipped with an approved manual shutoff
valve. This valve should be located in the
same room as the downdraft cooktop and
should be in a location that allows ease of
opening and closing. The valve is for turning
on or shutting off gas to the appliance. Do Not
block access to shutoff valve.
Pressure regulator: The gas pressure
regulator supplied with this downdraft
cooktop must be used. The regulator must be
checked at a minimum 1-inch water column
above the set pressure. The inlet pressure to
the regulator should be as follows for
operation and for checking the regulator
setting:
NATURAL GAS:
Minimum pressure: 6 inches WC
Maximum pressure: 14 inches WC
L.P. GAS:
Minimum pressure: 11 inches WC
Maximum pressure: 14 inches WC
Line pressure testing above 1/2 psi gauge
(14" WC) -- The downdraft cooktop and its
individual shutoff valve must be disconnected
from the gas supply piping system during any
pressure testing of that system at test
pressures greater than 1/2 psi (3.5 kPa).
Line pressure testing at 1/2 psi gauge
(14" WC) or lower --The
downdraft cooktop
must be isolated from the gas supply piping
system by closing its individual manual
shutoff valve during any pressure testing of
that system at test pressures equal to or less
than 1/2 psi (3.5 kPa).
Duct materials needed for installation are
not supplied.
Fire Hazard
The venting system MUST end outdoors.
Do Not end the duct in an attic, wall, ceiling
or other enclosed space.
Do Not use 4" laundry-type wall caps.
Do Not use plastic-type duct.
Do Not block the flow of combustion and
ventilation air.
Failure to follow these instructions could
result in a fire.
Before making cutouts, make sure there is
proper clearance within the wall or floor for
the exhaust duct.
Do Not cut a joist or stud unless absolutely
necessary.If a joist or stud must be cut, then
a supporting frame must be constructed.
Determine which venting method to use. See
"Venting methods," Page 4.
Next, determine the equivalent duct length
using the chart on page 4. This cooktop is
equipped with a dual range blower. The
equivalent duct length (not actual) determines
whether blower is set at the "Low" or "High"
range. The blower is set at the "Low" range
setting at the factory.
The blower housing must be rotated or
swiveled to the proper angle needed for your
installation. The blower can be swiveled 90°.
The blower may be rotated horizontally or
vertically. Reach through the ventilation
chamber to loosen, but Do Not remove, the
nuts around the blower inlet to adjust blower.
This downdraft cooktop is rated at 60 feet
(18.3 m) of straight duct.
• If duct length is 10 feet (3 m) or less,
5" diameter round duct MUST be used.
• If duct length is more than 10 feet (3 m), use
6" diameter round or 3-1/4" x 10" rectangular
duct.
Thermal breaks: In areas of extreme cold
weather, it may be necessary to provide a
short length of nonmetallic duct as close to
the wall as possible to prevent thermal
conduction along the metal duct.
For altitudes above 4,500 ft (1,350 m), reduce
recommended duct run by 20%.
For the most efficient and
quietest operation:
[] Use 26-gauge minimum galvanized or
25-gauge minimum aluminum metal duct.
Poor-quality pipe fittings can reduce air
flow. (Note: Local codes may require a
heavier-gauge material.) Flexible metal
duct is not recommended.
[] Do Not exhaust more than one downdraft
cooktop into a single duct system.
[] The length of duct and number of elbows
should be kept to a minimum to provide
efficient performance.
[] The size of the duct should be uniform.
[] Use no more than three 90° elbows.
[] Do Not install two elbows together.
[] Make sure there is a minimum of 18"
(46 cm) of straight duct between the
elbows if more than one elbow is used.
(Elbows too close together cause excess
turbulence that reduces airflow.)
[] Do Not use a 5" elbow in a 6" or
3-1/4" x 10" system. Instead, use a 5" to 6"
transition followed by a 6" elbow, or a 5"
to 3-1/4" x 10" elbow transition.
[] Do Not reduce back to 5" system after
using 6" or 3-1/4" x 10" fittings.
[] Avoid forming handmade crimps.
Handmade crimps may restrict airflow.
[] Use the recommended duct caps for
proper performance. If an alternate wall or
roof cap is used, be certain cap size is not
reduced and that it has a backdraft
damper.
[] Use duct tape to seal all joints in the
ductwork system.
[] Use caulking to seal exterior wall or roof
opening around the cap.
Page 3
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