PB Heat MI/MIH series - Manual (Page 17)

15
Table 5.4: 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: MI Boiler – Natural Gas
Table 5.2: MI Boiler – LP Gas
Table 5.3: MIH Boiler – Natural Gas
GAS PIPING
Model
Input
Cubic Feet / Hour Cubic Meters / Hour
MI-03 70 2.0
MI-04 105 3.0
MI-05 140 4.0
MI-06 175 5.0
MI-07 195 5.5
MI-08 227.5 6.4
MI-09 260 7.4
Model
Input
Cubic Feet / Hour Cubic Meters / Hour
MI-03 28 0.8
MI-04 42 1.2
MI-05 56 1.6
MI-06 70 2.0
MI-07 78 2.2
MI-08 91 2.6
MI-09 104 2.9
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.
Model
Input
Cubic Feet / Hour Cubic Meters / Hour
MIH-03 65 1.8
MIH-04 97.5 2.8
MIH-05 130 3.7
MIH-06 162.5 4.6
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