VA Series Outdoor LS Manual
27
Ref | Description | Canadian Installations | US Installations | ||
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A | Clearance above grade, veranda, porch, | 12 inches (30 cm) | 12 inches (30 cm) | ||
deck, or balcony | |||||
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B | Clearance to window or door that may be | 36 inches (91 cm) | 12 inches (30 cm) | ||
opened | |||||
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C | Clearance to permanently closed window | * |
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| Vertical clearance to ventilated soffit, |
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D | located above the terminal within a | * | * |
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horizontal distance of 2 feet (61 cm) from |
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| the center line of the terminal |
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E | Clearance to unventilated soffit | * |
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F | Clearance to outside corner | * |
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G | Clearance to inside corner | * |
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| 3 feet (91 cm) within a |
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H | Clearance to each side of center line | height 15 feet (4.5 m) | * | ||
extended above meter/regulator assembly | above the meter/ | ||||
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| regulator assembly |
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I | Clearance to service regulator vent outlet | 36 inches (91 cm) | * | ||
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| Clearance to nonmechanical air supply |
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J | inlet to building or the combustion air inlet | 36 inches (91 cm) | 12 inches (30 cm) | ||
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| 3 feet (91 cm) above if | |
K | Clearance to a mechanical air supply inlet | 6 feet (1.83 m) | within 10 feet (3 m) | ||
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L | Clearance above paved sidewalk or | 7 feet (2.13 m) | 1 | * | |
paved driveway located on public property | |||||
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M | Clearance under veranda, porch, deck, or | 12 inches (30 cm) 2 | * | ||
balcony | |||||
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1A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
2Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
*For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, clearances are in accordance with local installation codes and the requirements of the gas supplier.
Flue Terminal Clearances (ANS Z21.10.3 • CSA 4.3)