Installation guide
26
31-10755-4
BURNER OUTPUT RATINGS: BTU/HR 
  • 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.
Installation Instructions for Gas Conversion
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.
Once the conversion is complete and checked, fill out the conversion label and affix the label near the rating label. For ranges, 
place the label beneath the control panel. For rangetops, place the label on the bottom of the unit.
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
0.0571” 
(1.35mm)
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)
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