Power Flame UCM-1000, Installation And Operation Manual

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4
regarding flow capabilities of a chosen line size, the next largest size is recommended. Use correction
factors (multiplier) at right for other specific gravities and pressure drops.
2.1.6 Refer to Figure 2 for the typical gas piping schematic to meet U.L. requirements in the UCM burner firing
ranges.
1 1-1/4 1-1/2 2 2-1/2 3 4
10 520 1050 1600 3050 4800 8500 17500
20 350 730 1100 2100 3300 5900 12000
30 285 590 890 1650 2700 4700 9700 0.5 1.1 0.1 0.577
40 245 500 760 1450 2300 4100 8300 0.6 1 0.2 0.815
50 215 440 670 1270 2000 3600 7400 0.7 0.926 0.3 1
60 195 400 610 1150 1850 3250 6800 0.8 0.867 0.4 1.16
70 180 370 560 1050 1700 3000 6200 0.9 0.817 0.6 1.42
80 170 350 530 990 1600 2800 5800 1 0.775 0.8 1.64
90 160 320 490 930 1500 2600 5400 1 1.83
100 150 305 460 870 1400 2500 5100 1.1 0.74 2 2.58
125 130 275 410 780 1250 2200 4500 3 3.16
150 120 250 380 710 1130 2000 4100 1.55 0.662 4 3.65
175 110 225 350 650 1050 1850 3800 6 4.47
200 100 210 320 610 980 1700 3500 2 0.547 8 5.15
Propane
Butane
Pipe Size – Inches (IPS) Pipe Length
(Feet)
Specific Gravity
other than 0.60
Specific
Gravity
Multiplier
Propane - Air
Specific Drop
other than 0.3" w.c.
Pressure
drop
(" w.c.)
Multiplier
Capacity of Pipes – Natural Gas (CFH)
With Pressure Drop of 0.3” w.c. and Specific Gravity of 0.60
Note: Use multiplier at right for other specific gravities and pressure drops
Correction Factors
Table 1: Capacity of pipes and correction factors
1 1-1/4 1-1/2 2 2-1/2 3 4
Std tee through side 5.5 7.5 9 12 14 17 22
Std. E11 2.7 3.7 4.3 5.5 6.5 8 12
45
°
E11 1.2 1.6 2 2.5 3 3.7 5
Plug Cock 3 4 5.5 7.5 9 12 16
Pipe Size (IPS)
Table 2: Equivalent Length of Fittings in Feet