Vent Terminal Air Supply Inlet Area where terminal is not permitted
VENT TERMINAL CLEARANCES
REFERENCE LETTER TO |
| CANADIAN |
DRAWING |
| INSTALLATIONS¹ |
A = Clearance above grade, | 12 | Inches (30 cm) |
veranda, porch, deck, or |
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balcony |
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B = Clearance to window or door | 12 | Inches (30 cm) |
that may be opened |
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C = Clearance to permanently | 12 | Inches (30 cm) |
closed window |
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D = Vertical clearance to | 18 | Inches (46 cm) |
ventilated soffit located above |
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the terminal within a horizontal |
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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 | 18 | Inches (46 cm) |
soffit |
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F = Clearance to outside corner | 12 | Inches (30 cm) |
G = Clearance to inside corner | 12 | Inches (30 cm) |
H = Clearance to each side of | 3 Feet (91 cm) within a hei | |
center line extended above | 15 | Feet (4.5m) above the |
meter/ regulator assembly | meter/regulator assembly | |
I = Clearance to service regulator | 3 Feet (91 cm) | |
vent outlet |
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J = Clearance to nonmechanical | 12 | Inches (30 cm) |
air supply inlet to building or the |
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combustion air inlet to any other |
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appliance |
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K = Clearance to a mechanical | 6 Feet (1.83 m) | |
air supply inlet |
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L = Clearance above paved | 7 Feet (2.13m) A vent shal | |
sidewalk or paved driveway | not terminate directly abo | |
located on public property | a sidewalk or paved drive | |
| h |
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