Gas Connection; Gas Piping - Blodgett AC-500 Manuel D'installation

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 an AC-500 gas convection oven to
add to your existing cook line.
1. Add the BTU rating of your current appliances.
Pitco Fryer
6 Burner Range
Deck Oven
Total
2. Add the BTU rating of the new oven to the to-
tal.
Previous Total
AC-500
New Total
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,
300,000 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.
All manuals and user guides at all-guides.com
Maximum Capacity of Iron Pipe in Cubic Feet
Length Length
120,000 BTU
60,000 BTU
50,000 BTU
230,000 BTU
230,000 BTU
70,000 BTU
Maximum Capacity of Pipe in Thousands of
300,000 BTU
Pipe Length
10
of Natural Gas Per Hour
(Pressure drop of 0.5 Inch W.C.)
Pipe Nominal Size, Inches
3/4" 1" 1-1/4" 1-1/2"
(ft)
10 360 680 1400
20 250 465 950
30 200 375 770
40 170 320 660
50 151 285 580
60 138 260 530
70 125 240 490
80 118 220 460
90 110 205 430
100 103 195 400
From the National Fuel Gas Code Part 10 Table 10-2
BTU/hr of Undiluted L.P . Gas at 11" W.C.
(Pressure drop of 0.5 Inch W.C.)
p g Outside Diameter, Inches
(ft) (ft)
3/4"
10 608
20 418
30 336
40 287
50 255
60 231
70 215
80 198
90 187
100 175
From the National Fuel Gas Code Part 10 Table 10-15
2"
2100 3950
1460 2750
1180 2200
990 1900
900 1680
810 1520
750 1400
690 1300
650 1220
620 1150
1" 1-1/2"
1146 3525
788 2423
632 1946
541 1665
480 1476
435 1337
404 1241
372 1144
351 1079
330 1014