Installation 
Gas Connection
GAS PIPING
A properly sized gas supply system is essential for maximum oven performance. Piping should be sized to provide a supply of gas sufficient to meet the maximum demand of all appliances on the line without loss of pressure at the equipment.
Example:
NOTE: BTU values in the following example are for natural gas.
You purchase a Model 911 deck oven to add to your existing cook line.
1. Add the BTU rating of your current appliances.
Pitco Fryer | 120,000 | BTU |
6 Burner Range | 60,000 | BTU |
Convection Oven | 50,000 | BTU |
Total | 230,000 | BTU |
2.Add the BTU rating of the new oven to the to- tal.
Previous Total | 230,000 | BTU |
911 | 20,000 | BTU |
New Total | 250,000 | BTU |
3.Measure the distance from the gas meter to the cook line. This is the pipe length. Let’s say the pipe length is 40’ (12.2 m) and the pipe size is 1” (2.54 cm).
4.Use the appropriate table to determine the to- tal capacity of your current gas piping.
The total capacity for this example is 320,000 BTU. Since the total required gas pressure, 250,000 BTU is less than 320,000 BTU, the current gas piping will not have to be in- creased.
NOTE: The BTU capacities given in the tables are for straight pipe lengths only. Any elbows or other fittings will decrease pipe capaci- ties. Contact your local gas supplier if you have any questions.
Maximum Capacity of Iron Pipe in Cubic Feet
of Natural Gas Per Hour
(Pressure drop of 0.5 Inch W.C.)
Pipe |
| Nominal Size, Inches |
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Length |
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(ft) | 3/4” | 1” | 2” | ||
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10 | 360 | 680 | 1400 | 2100 | 3950 |
20 | 250 | 465 | 950 | 1460 | 2750 |
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30 | 200 | 375 | 770 | 1180 | 2200 |
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40 | 170 | 320 | 660 | 990 | 1900 |
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50 | 151 | 285 | 580 | 900 | 1680 |
60 | 138 | 260 | 530 | 810 | 1520 |
70 | 125 | 240 | 490 | 750 | 1400 |
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80 | 118 | 220 | 460 | 690 | 1300 |
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90 | 110 | 205 | 430 | 650 | 1220 |
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100 | 103 | 195 | 400 | 620 | 1150 |
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From the National Fuel Gas Code Part 10 Table
Maximum Capacity of Pipe in Thousands of BTU/hr of Undiluted P.P. Gas at 11” W.C.
(Pressure drop of 0.5 Inch W.C.)
Pipe Length | Outside Diameter, Inches | |||
(ft) |
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3/4” | 1” |
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10 | 608 | 1146 | 3525 | |
20 | 418 | 788 | 2423 | |
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30 | 336 | 632 | 1946 | |
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40 | 287 | 541 | 1665 | |
50 | 255 | 480 | 1476 | |
60 | 231 | 435 | 1337 | |
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70 | 215 | 404 | 1241 | |
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80 | 198 | 372 | 1144 | |
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90 | 187 | 351 | 1079 | |
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100 | 175 | 330 | 1014 | |
From the National Fuel Gas Code Part 10 Table
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