9. Gas Piping
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Gas Pressure
Size the gas line according to total btuh demand of the building and length from the meter or
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.BY8$
.BY8$
Measuring Gas Pressure
Gas Meter
Select a gas meter capable of supplying the entire btuh demand of all gas appliances in the building.
Gas Connection
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Sample Gas Line
Electrolux Condensing Tankless Gas Water Heater
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| Barbecue | |||||
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| Outlet E |
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| Outlet A |
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| Clothes Dryer |
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| 10' (3m) |
| (35,000 Btuh) |
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| 10' (3m) | |||||
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| Outlet C |
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| 5' (1.5m) |
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Section 4 |
| Section 3 Section 2 |
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| Section 1 |
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| 5' (1.5m) |
| 5' (1.5m) |
| 5' (1.5m) |
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| 10' (3m) |
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| 5' (1.5m) |
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| 5' (1.5m) | ||||
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| Outlet D |
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| Outlet B |
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| 10' (3m) |
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| Gas Fireplace |
| Gas Range Stove | ||||||||||
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| (25,000 Btuh) |
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| (65,000 Btuh) | |||||||
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Natural Gas |
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Meter | **See next page for the pipe capacity charts. |
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Instructions
1.Size each outlet branch starting from the furthest using the Btuh required and the length from the meter.
2.Size each section of the main line using the length to the furthest outlet and the Btuh required by everything after that section.
Sample Calculation
Outlet A: 45' (13.5m) (Use 50' (15m)), 50,000 Btuh requires 1/2"
Outlet B: 40' (12m), 65,000 Btuh requires 1/2"
Section 1: 45' (13.5m) (Use 50' (15m)), 115,000 Btuh requires 3/4"
Outlet C: 30' (9m), 35,000 Btuh requires 1/2"
Section 2: 45' (13.5m) (Use 50' (15m)), 150,000 Btuh requires 3/4"
Outlet D: 25' (7.5m) (Use 30' (9m)), 25,000 Btuh requires 1/2"
Section 3: 45' (13.5m) (Use 50' (15m)), 175,000 Btuh requires 1"
Outlet E: 25' (7.5m) (Use 30' (9m)), 199,900 Btuh requires 3/4"
Section 4: 45' (13.5m) (Use 50' (15m)), 374,900 Btuh requires
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