Smith GBX 70 - Page 14

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