Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
General Venting Information - Termination Location
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| INSIDE |
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| CORNER DETAIL |
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| G |
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| V | N | |
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| H | ||
D | A | N | ||
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| E |
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| V |
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V
L
B
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| C |
| V | Fixed |
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| Closed |
F | V | Operable |
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| B |
B
V
B
| B |
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Operable | Fixed |
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Closed |
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| B |
V | J | X | M |
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A
I
V
K
X
G
G
A
V
V
V
CFM145a
VENT TERMINATION X AIR SUPPLY INLET | AREA WHERE TERMINAL IS NOT PERMITTED |
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| Canadian Installations1 | US Installations2 |
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| A = Clearance above grade, veranda, porch, | 12 inches (30cm) | 12 inches (30cm) | |||
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| deck, or balcony |
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| B = Clearance to window or door that may be | 6 in (15cm) for appliances | 6 in (15cm) for appliances | |||
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| opened | < 10,000Btuh (3kW), 12 in (30cm) | < 10,000 Btuh (3kW), 9 in | ||
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| for appliances > 10,000 Btuh (3kW) and | (23cm) for appliances > 10,000 | ||
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| < 100,000 Btuh (30kW), 36 inches (91cm) | Btuh (3kW) and < 50,000 Btuh | ||
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| for appliances > 100,000 Btuh (30kW) | (15kW), 12 in (30cm) for | ||
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| appliances > 50,000 Btuh (15kW) | ||
| C = Clearance to permanently closed window | 12Ó (305mm) recommended to | 12Ó (305mm) recommended to | |||
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| prevent window condensation | prevent window condensation | ||
| D = Vertical clearance to ventilated soffit located |
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| above the terminal within a horizontal | 18Ó (458mm) | 18Ó (458mm) | ||
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| distance of 2 feet (610mm) from the center |
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| line of the terminal |
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| E = Clearance to unventilated soffit | 12Ó (305mm) | 12Ó (305mm) | |||
| F = | Clearance to outside corner | see next page | see next page | ||
| G = Clearance to inside corner (see next page) | see next page | see next page | |||
| H = Clearance to each inside of center line | 3 feet (91cm) within a height of 15 feet | 3 ft (91cm) within a height of 15 ft | |||
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| extended above meter/regulator assembly | above the meter/regulator assembly | above the meter/regulator assy | ||
| I = | Clearance to service regulator vent outlet | 3 feet (91cm) | 3 feet (91cm) | ||
| J = | Clearance to nonmechanical air supply inlet | 6 inches (15cm) for appliances < 10,000 | 6 inches (15cm) for appliances | ||
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| to building or the combustion air inlet to any | Btuh (3kW), 12 inches (30cm) for | < 10,000 Btuh (3kW), 9 inches | ||
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| other appliances | appliances > 10,000 Btuh (3kW) and < | (23cm) for appliances > 10,000 | ||
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| 100,000 Btuh (30kW), 36 inches (91cm) | Btuh (3kW) and < 50,000 Btuh | ||
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| for appliances > 100,000 Btuh (30kW) | (15kW), 12 inches (30cm) for | ||
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| appliances > 50,000 Btuh (15kW) | ||
| K = Clearance to a mechanical air supply inlet | 6 feet (1.83m) | 3 feet (91cm) above if within 10 | |||
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| feet (3m) horizontally | ||
| L = | Clearance above paved sidewalk or paved | 7 feet (2.13m) | 7 feet (2.13m) | ||
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| driveway located on public property |
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| M = Clearance under veranda, porch, deck or | 12 inches (30cm)c | 12 inches (30cm) | |||
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| balcony |
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N = Clearance above a roof shall extend a minimum of 24Ó (610mm) above the highest point when it passes through the roof surface, and any other obstruction within a horizontal distance of 18Ó (450mm).
1 In accordance with the current
2 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Codes
A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings
àonly permitted if veranda, porch, deck or balcony is fully open on a minimum 2 sides beneath the floor: NOTE: 1. Local codes or regulations may require different clearances.
2.The special venting system used on Vermont Castings Direct Vent Stoves are certified as part of the appliance, with clearances tested and approved by the listing agency.
Fig. 9 Vent termination clearances.
10 | 20002191 |
