GE ZGP48 Series, ZGP304 Series, ZGP36 Series, ZGP30 Series Installation Instructions Manual
Installation
Instructions
Convert Natural Gas to LP Gas Operation
Convert LP Gas to Natural Gas Operation
WARNING: This conversion
must be performed by a qualified installer
or gas supplier in accordance with the
manufacturer’s instructions and all codes
and requirements of the authority having
jurisdiction. Failure to follow instructions
could result in serious injury or property
damage. The qualified agency performing
this work assumes responsibility for the
conversion.
WARNING: The rangetop, as
shipped from the factory, is set for use with its
intended gas. If you wish to use your rangetop
with the alternate gas, you must first
replace the orifices and convert the pressure
regulator.
WARNING: The following
adjustments must be made before turning
on the burner. Failure to do so could result in
serious injury. Be sure pressure regulator has
been converted as described in Step 2.
TOOLS YOU NEEDED FOR CONVERSION
Safety Glasses
Small Flat-Head Screwdriver
(2 to 2.4 mm or 3/32” tip size,
60 mm long)
Crescent Wrench
1/4” and 7mm Nutdrivers
7/16” (11 mm)
Open End Wrench
Small Pliers
1/2” Deepwell
Socket Wrench
Philips
Screwdriver
1
ORIFICE HOLDER
The range orifice holder is located behind the front
access panel at the bottom of the range. Remove
the door(s) (See instructions on Page 10) and the
screws on the top and
bottom of the front access
panel. Remove the front
access panel to access the
orifice holder.
Additional orifices may
be present. Use only the
orifices specified in the
instructions for your range
or rangetop.
2
CONVERT THE REGULATOR(S)
Disconnect all electrical power at the main circuit
breaker or fuse box.
A. Shut off the gas supply by closing the manual
shut-off valve on the unit or by the wall.
B. Move the range out in order to access the
rear of the unit.
C. Remove the range back to access the regulator(s)
-
(1) on 30” & 36” ranges and (2) on 48” ranges.
D. Convert the pressure regulator(s):
• Unscrew the cap with plunger.
• Place your thumb against flat side of the
plunger and press down to snap the plunger
out of the cap.
• Carefully look at the plunger to locate the NAT
or LP position.
• Turn the plunger over so that the desired gas
is showing
near the
bottom.
• Snap the
plunger back
into the cap.
• Screw the cap
back onto the
regulator.
E. Reverse these steps to reassemble the
pressure regulator.
DOWN
FOR OFF
NAT
LP
LP
NAT
LP
NAT
NAT
LP
Gasket
Cap
Plunger
LP Position
NAT.
Position
Pressure Regulator
3
CHANGE BURNER ORIFICES
INSTALLATION TIP: First remove
all orifices and then start
replacing them. This will help to
prevent the possibility that some
may not be replaced.
A. Remove the burner grates,
burner caps and burner heads.
B. Loosen the top burner orifices using
a 7 mm nut driver. Use small
pliers to carefully lift out the
orifices.
The main orifice is located
low in the center of the
burner, while the simmer
orifice is located higher beside the center of the
burner.
IMPORTANT: Find your model number below.
Read each orifice label to identify and install them
in the exact locations shown.
A. Return the unused orifices to the holder.
Reattach the holder and the instruction sheet
with screw in the original storage location.
B. Replace the burner heads, caps and top
grates
. On range models, replace rear vent trim.
Burner Cap
Burner
Head
Spark
Igniter
Burner Base
Main
Orifice
Simmer
Orifice
ZGP304 SIMMER ORIFICES
A 34SL or 51SN orifice will
be used on all burners.
ZGP364, ZGP366, ZGP484, ZGP486
SIMMER
ORIFICES
A 34SL or 51SN
orifice will be
used on all
burners.
Use 108XL or
190XN orifices for
all burners.
MAIN
ORIFICES
4 CHANGE GRILL ORIFICE (if present)
Locate the 1–1/2” long Grill orifice.
Select the proper orifice size for your gas and
burner from the conversion chart.
A. Remove the grill cover, grates
and grate frame. Lift the
radiant baffle straight up and
off.
B. Remove the 2 hex head
screws from the top of the
igniter.
• Remove one screw from
each side of the burner
surround.
• Lift out the surround.
C. Carefully push the igniter
aside and under the
burner. Do not pull or
pinch the wire.
Remove 4 burner
attachment screws,
2 at the front and
2 at the back. Slide
the burner assembly
toward the back and
out of the gas inlet.
D. Use a 1/2” deep well
socket to remove and
replace the orifice .
Reverse these steps to
re-assemble the grill. Be
sure to place the unused
orifice in the holder for
possible future use.
Remove
2 hex
head
screws
Surround
Screws
Burner
Surround
Igniter
Burner
Assembly
Front of Range
Capillary
Front of Range
5
CHANGE GRIDDLE ORIFICE
(if present)
Locate the 3/4” long griddle orifice.
Select the proper orifice size for your gas
and burner from the conversion chart.
A. Lift off the griddle flue cover. Remove the 2
inside clamping screws.
B. Lift out the cast-
iron grease trough.
Slide the griddle
toward the rear
and out of the
hold-down tabs
along the bottom.
C. Carefully lift and
hold the griddle
while pulling
additional length
of the capillary
from the entry
hole. Stand the
griddle on end in the grease sump.
D. Remove the 2
hold-down screws
at the rear of the
burner.
Pull the burner
straight back
toward the rear
and out of the gas inlet.
E. Use a 1/2” deepwell
socket to remove
and replace the
orifice.
Reverse these steps
to reassemble the
griddle. Push excess
capillary back into the entry hole. Place the
unused orifice in the holder for possible
future use.
Griddle Flue Cover
Clamping Screws
Leveling Screws
NOTE: Remove
the 2 screws
positioned on
the inside only.
Do not remove
the outermost
screws—they
are for leveling.
Back of Range
6A
CHANGE MAIN BAKE BURNER
ORIFICE
Locate the 3/4” long bake burner orifice.
Select the proper orifice size for your gas and burner
from the conversion chart.
A. Remove the oven door and set aside in a
safe location.
B. Remove the 2 oven bottom hold-down
screws from the rear of the cover.
C. Slide the oven bottom forward and set
aside.
D. Remove the burner diffuser screw.
E. Lift the front of the burner diffuser up
slightly and slide it forward to disengage
the clips at the rear. Set the burner diffuser
aside.
Hold-Down Screws
Oven
Bottom
Diffuser screw
Clips
31-10766-1 11-10 GE
1
Front Access Cover
ZGP304 MAIN ORIFICES
A 84XL or 126HXN
orifice will be used
on these three
burners.
Use a 108XL or
190XN orifice
for the right
front burner.
BURNER OUTPUT RATINGS: BTU/HR
7
CHANGE MAIN/COMPANION
BROIL BURNER ORIFICE
Locate the broil burner orifice.
Select the proper orifice size for your gas and
burner from the conversion chart.
The rear cover should still be removed from
converting the regulator(s). Refer to section 2 for details if it is not.
A. Remove the 2 broil duct cover retension
screw. Lift up and slide out to remove.
B. Loosen and remove the broil supply tube
nut from the broil orifice holder.
C.
Using an adjustable wrench and a 7/16” (11
mm) box end wrench to loosen and remove
and replace the broil orifice.
D. Reverse these steps to reassemble the
griddle.Push excess capillary back into the
entry hole.Place the unused orifice in the
holder for possible future use.
6A
CHANGE MAIN BAKE BURNER
ORIFICE (Cont.)
F. Remove the 2 burner retention screws.
G.
Lift the front of the burner up slightly and slide
forward setting aside (careful not to damage
the igniter.)
H. Use a 1/2” deepwell socket to remove and
replace the orifice.
I. Reverse these steps to reassemble the
griddle. Push excess capillary back into the
entry hole. Place the unused orifice in the
holder for possible future use.
Burner retention
screws
Burner
6B
CHANGE COMPANION BAKE
BURNER ORIFICE (if present)
Locate the 3/4” long bake burner orifice.
Select the proper orifice size for your gas and
burner from the conversion chart.
A. Remove the oven door and set aside in a
safe location.
B. Remove the 2 oven bottom hold-down
screws from the rear of the cover.
C. Slide the oven bottom forward and set
asside.
D. Remove the burner diffuser screw.
E. Lift the front of the burner diffuser up
slightly and slide it forward to disengage
the clips at the rear. Set the burner diffuser
aside.
F. Remove the 3 burner retension screws (1 in
front and 2 at the rear)
G. Lift the front of the burner up slightly and
slide leftward to remove.
H. Use a 1/2” deep-
well socket to
remove and replace the orifice.
I. Reverse these
steps to reassemble the
griddle.Push
excess capillary
back into the entry hole.Place the unused
orifice in the holder for possible future use.
Hold-Down
Screws
Oven
Bottom
Diffuser Screw
Clips
Burner
Retension
Screws
Remove
screws
8
ADJUST BURNER FLAMES
Normally, burners do not need further
adjustment. Make adjustments only when
necessary.
A. Turn on the gas. Plug in electrical cord.
B. Turn all burners on highest setting and
check the flames. They should be blue in
color. When using LP gas, the flames may
have some yellow tipping at the ends of the
flame. Foreign particles in the gas line may
cause an orange flame at first, but this will
soon disappear.
C. Turn the burner knob to “LO” while
observing the flame.
Adjust the setting of the upper row of flames
using the valve bypass screw as follows:
Adjustments must be made with two other
burners in operation on a medium setting.
This prevents the upper row of flames from
being set too low, resulting in the flame
being extinguished when other burners are
turned on.
D. To adjust the flame, remove the knobs. Insert
a small flat-blade screwdriver into the hole
in the center of the valve stem to engage
screw.
• If the flames are too small or flutter, turn the
screw counterclockwise.
• If the flames are too large, turn the screw
clockwise.
E. Make the adjustment by slowly turning the
screw until flame appearance is correct.
2
NG (Natural) Gas, 5” W.C.P.
MODEL BURNER
BTU
RATE
ORIFICE
SIZE
ID
ZGP48
ZGP36
ALL SURF. Main 16,800
0.075”
(1.90mm)
190XN
BURNERS Simmer 1,200
0.002”
(0.51mm)
51SL
ZGP304
RF BURNER
Main 16,800
0.075”
(1.90mm)
190XN
Simmer 1,200
0.002”
(0.51mm)
51SN
ZGP304
RR, LR, LF
Main
Simmer
8,800
0.050”
(1.26mm)
126HXN
1,200
0.002”
(0.51mm)
51SN
ALL GRILL 15,000
0.0689”
(1.75mm)
0.069
ALL GRIDDLE 18,000
0.076”
(1.93mm)
0.076
ZGP48/
ZGP36
BAKE MAIN 24,500
0.0886”
(2.25mm)
0.089
ZGP30 BAKE MAIN 23,500
0.0866”
(2.20mm)
0.087
ZGP48 BAKE COMPANION 10,500
0.0531”
(1.35mm)
0.053
ALL BROIL MAIN 12,500
0.063”
(1.60mm)
160
ZGP48 BROIL COMPANION 9,000
0.052”
(1.32mm)
132
LP (Propane) Gas, 10” W.C.P.
MODEL BURNER
BTU
RATE
ORIFICE
SIZE
ID
ZGP48
ZGP36
ALL SURF. Main 13,800
0.043”
(1.08mm)
108XL
BURNERS Simmer 1,200
0.013”
(0.34mm)
34SL
ZGP304
RF BURNER
Main 13,800
0.043”
(1.08mm)
108XL
Simmer 1,200
0.013”
(0.34mm)
34SL
ZGP304
RR, LR, LF
Main
Simmer
7,900
0.033”
(0.84mm)
84XL
1,200
0.013”
(0.34mm)
34SL
ALL GRILL 14,000
0.047”
(1.19mm)
0.047
ALL GRIDDLE 16,000
0.047”
(1.19mm)
0.047
ZGP48/
ZGP36
BAKE MAIN 23,000
0.055”
(1.397m)
0.055
ZGP30 BAKE MAIN 21,500
0.0531”
(1.35mm)
0.053
ZGP48 BAKE COMPANION 10,000
0.0374”
(0.95mm)
0.037
ALL BROIL MAIN 11,500
0.041”
(1.04mm)
104
ZGP48 BROIL COMPANION 9,000
0.0360”
(0.91mm)
91
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