Size
Input
Cubic Feet / Hour
Cubic Meters / Hour
70
70
2.0
105
105
3.0
140
140
4.0
175
175
5.0
195
195
5.5
14
Table 5.3:
Pipe Capacity
Capacity of pipe of different diameters and lengths in cubic feet
per hour [cubic meter per hour] with a pressure drop of 0.3
inches of water (75 Pa) and specific gravity of 0.60. No
allowance for an ordinary number of fittings is required.
Table 5.1:
Boiler – Natural Gas
Table 5.2:
Boiler – LP Gas
INSTALLATION AND OPERATING INSTRUCTIONS
Size
Input
Cubic Feet / Hour
Cubic Meters / Hour
70
28
0.8
105
42
1.2
140
56
1.6
175
70
2.0
195
78
2.2
Pipe
Length in
Feet
[Meters]
3/4"
Pipe
1"
Pipe
1-1/4"
Pipe
1-1/2"
Pipe
10 [3.0]
278 [7.9] 520 [14.7] 1050 [29.7]
1600 [45.3]
20 [6.1]
190 [5.4]
350 [9.9]
730 [20.7]
1100 [31.1]
30 [9.1]
152 [4.3]
285 [8.1]
590 [16.7]
890 [25.2]
40 [12.2]
130 [3.7]
245 [6.9]
500 [14.2]
760 [21.5]
50 [15.2]
115 [3.3]
215 [6.1]
440 [12.5]
670 [19.0]
60 [18.3]
105 [3.0]
195 [5.5]
400 [11.3]
610 [17.3]
Maximum Capacity Correction Factors for
Specific Gravity other than 0.60.
Specific Gravity
0.50 0.55 0.60 0.65 0.70 0.75
Correction Factor
1.10
1.04
1.00
0.96
0.93
0.90
Specific Gravity
0.80 0.85 0.90 1.00 1.10 1.20
Correction Factor
0.87
0.84
0.82
0.78
0.74
0.71
Specific Gravity
1.30 1.40 1.50 1.60 1.70 1.80
Correction Factor
0.68
0.66
0.63
0.61
0.59
0.58
