| MACH® Series |
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| Installation |
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Pipe Capacity for Natural Gas |
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| Nominal |
| Equivalent Pipe Length | Maximum Capacity in Cubic Feet of Natural Gas per Hour |
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| Iron Pipe | Internal |
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| Pressure Drop of 0.5 inch Water Column/Equivalent Length of Pipe |
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| Size | Diameter |
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| 90º Ell | Tee |
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| (Inches) | (Inches) |
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| (Feet) | (Feet) | 20 | 40 | 60 | 80 | 100 | 150 | 200 |
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| 1/2 | 0.622 | 1.55 | 3.1 | 120 | 82 | 66 | 57 | 50 | 40 | 35 |
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| 3/4 | 0.824 | 2.06 | 4.12 | 250 | 170 | 138 | 118 | 103 | 84 | 72 |
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| 1 | 1.049 | 2.62 | 5.24 | 465 | 320 | 260 | 220 | 195 | 160 | 135 |
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| 1- 1/4 | 1.380 | 3.45 | 6.9 | 950 | 660 | 530 | 460 | 400 | 325 | 280 |
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| 1- 1/2 | 1.610 | 4.02 | 8.04 | 1460 | 990 | 810 | 690 | 620 | 500 | 430 |
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| 2 | 2.067 | 5.17 | 10.3 | 2750 | 1900 | 1520 | 1300 | 1150 | 950 | 800 |
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| 2- 1/2 | 2.469 | 6.16 | 12.3 | 4350 | 3000 | 2400 | 2050 | 1850 | 1500 | 1280 |
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| 3 | 3.068 | 7.67 | 15.3 | 7700 | 5300 | 4300 | 3700 | 3250 | 2650 | 2280 |
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| 4 | 4.026 | 10.1 | 20.2 | 15800 | 10900 | 8800 | 7500 | 6700 | 5500 | 4600 |
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3.7.1 Gas Supply Piping by Installer
The boiler and all gas piping connections should be
3.8BOILER WATER PIPING
3.8.1 Piping Design
Water Flow in System
The boiler must be disconnected at the boiler manual
During any pressure testing of the gas supply piping system at pressures equal to or less than 1/2 psig (14" W.C.), the boiler should be isolated from the gas supply piping system by closing the manual
Some leak test solutions, including soap and water, may cause corrosion. These solutions should be
For proper water flow requirements see below. Incorrect flow may result in eventual damage or premature failure of the equipment.
Model | Max Flow | Min Flow | DP ft. at |
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1050 | 105 | 52 | 12 |
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900 | 90 | 45 | 12 |
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750 | 75 | 37 | 12 |
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450 | 45 | 22 | 8.5 |
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300 | 30 | 15 | 8.5 |
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Contact factory for minimum flow at other than maximum firing rate.
Page 14
