16
Natural Gas Conversion
1.
Turn the manual shut-off valve to the closed position.
2.
Unplug cooktop or disconnect power.
To Convert Gas Pressure Regulator
1.
Remove the access cap by using a wrench, turning the
access cap counterclockwise.
2.
Remove spring retainer from the cap by pushing against the
flat side of the spring retainer. Look at the spring retainer to
locate the “LP” or “NAT” position. Turn over the spring
retainer so the “NAT” is showing on the bottom. Snap the
spring retainer back into the cap. Reinstall the cap onto the
regulator.
3.
Test the gas pressure regulator and gas supply line.
The regulator must be checked at a minimum 1" (2.5 cm)
water column above the set pressure. The inlet pressure
to the regulator should be as follows for operation and
checking the regulator setting:
LP Gas:
Minimum pressure 6" (15.2 cm) WCP
Maximum pressure 14" (35.5 cm) WCP
Gas Supply Pressure Testing
Gas supply pressure for testing regulator must be at least
1" water column pressure above the manifold pressure
shown on the model/serial/rating plate.
Line pressure testing above
1
/
2
psi gauge (14" WCP)
The cooktop and its individual shut-off valve must be
disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in
excess of
1
/
2
psi (3.5 kPa).
Line pressure testing at
1
/
2
psi gauge (14" WCP) or lower
The cooktop must be isolated from the gas supply piping
system by closing its individual manual shut-off valve during
any pressure testing of the gas supply piping system at test
pressures equal to or less than
1
/
2
psi (3.5 kPa).
To Convert Surface Burners
1.
If installed, remove the burner grates.
2.
Remove burner cap.
3.
Remove the burner base.
A
B
Large Dual Burner
A. Burner cap
B. Burner base
A
B
C
Medium Burner
A. Burner cap
B. Burner base
C. Choke (for use with medium
burner, LP gas only)
A
B
Small Burner
A. Burner cap
B. Burner base
4.
Apply masking tape to the end of a 7 mm nut driver to help
hold the gas orifice spud in the nut driver while changing it.
Insert nut driver into gas opening and press down onto the
gas orifice spud and remove by turning the gas orifice spud
counterclockwise and lifting out. Set gas orifice spud aside.
5.
Replace with correct Natural gas orifice spud. See the
“Natural Gas Orifice Spud/Hood Chart.”
Use the following chart to find the exact orifice spud
placement.
Remove choke from medium burner base.
Natural Gas Orifice Spud/Hood Chart
Burner
Rating
Color
Size
Burner Style
5,000 BTUs
NG 5k
Small
Burner
Bag
0.97 mm
Small burners
15,000 BTUs No color
1.75 mm
Medium burners
20,000 BTUs Blue/
Yellow
Black
1.98 mm
0.52 mm
Large burner - main
Large burner - simmer
18,000 BTUs Red
1.93 mm
Grill burner
(on some models)
Burner orifice spud
Grill orifice hood
A. Size stamp or color
A. Size stamp
A
B
C
A. To cooktop
B. Shut-off valve (closed position)
C. Gas supply line
A
B
C
D
E
A. Access cap
B. Gasket
C. Gas pressure regulator
D. NAT position
E. LP position
A
A
