Installation Guide
54 
Burner  Placement 
NG Orifice
Size (mm) 
LP Orifice
Size (mm) 
Rating 
(BTU) 
Rapid  Front Left  1.79  1.16  15,000
Rapid  Front Right  1.79  1.16  15,000
Semi Rapid  Rear Left  1.36  0.90  9,000 
Semi Rapid  Rear Right  1.36  0.90  9,000 
Broil  Oven Top  1.42  0.94  10,000 
Bake  Oven Bottom  2.13  1.40  22,000 
CONVERT SURFACE BURNERS 
Tool Needed 
• 9/32" (7 mm) nut driver
IMPORTANT: Make sure to save the orifices that have just been replaced in 
the conversion. 
NG/LP Orifice Chart for Surface and Oven Burners
COS-GRP304 (30")
15,000 BTU
NG: 1.79
LP: 1.16
9,000 BTU
NG: 1.36
LP: 0.90
15,000 BTU
NG: 1.79
LP: 1.16
9,000 BTU
NG: 1.36
LP: 0.90










