PB Heat manual MIH Boiler Natural Gas

GAS PIPING

Table 5.1: MI Boiler – Natural Gas

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

Table 5.2: MI Boiler – LP Gas

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

Table 5.3: MIH Boiler – Natural Gas

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

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.

Pipe
Length in	3/4"	1"	1-1/4"	1-1/2"
Feet	Pipe	Pipe	Pipe	Pipe
[Meters]
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

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