Location of Termination Cap
D
E V
B L
| C |
|
| Fixed | V |
| Closed | |
|
| |
F | Openable |
|
V |
|
B
B
B
Openable ClosedFixed
H
VI
B
V J XG
AM
N N
| G |
| V |
| G |
V K X | V |
|
|
|
|
|
|
|
|
|
| A | ||
|
| V TERMINATION CAP | X AIR SUPPLY INLET |
| G | GAS METER |
| RESTRICTED AREA |
|
| ||
|
|
|
| |||||||||
|
|
|
|
|
|
|
|
|
| (TERMINATION PROHIBITED) | ||
A | = | clearance above grade, veranda, porch, deck, or | I | = | clearance to service regulator vent outlet [*72" (182.9 cm) | |||||||
|
| balcony [*12" (30.5 cm) minimum] |
|
|
| minimum] |
|
|
|
| ||
B | = | clearance to window or door that may be opened | J | = | clearance to | |||||||
|
| [12" (30.5 cm) minimum] |
|
|
| or the combustion air inlet to any other fireplace | ||||||
C | = | clearance to permanently closed window |
|
|
| [*12" (30.5 cm) minimum] | ||||||
|
| [minimum 12" (30.5 cm) recommended to prevent | K | = | clearance to a mechanical air supply inlet [*72" (182.9 cm) | |||||||
|
| condensation on window] |
|
|
| minimum] |
|
|
|
| ||
D | = | vertical clearance to ventilated soffit located above the | L | = | † clearance above paved | |||||||
|
| terminal within a horizontal distance of 24" (61 cm) from |
|
| located on public property [*84" (213.3 cm) minimum] | |||||||
|
| the | M = | clearance under veranda, porch, deck | ||||||||
E | = | clearance to unventilated soffit [12" (30.5 cm) minimum] |
|
| [*12" (30.5 cm) minimum ‡] | |||||||
F | = | clearance to outside corner (see below) |
| N = | clearance above a roof shall extend a minimum of | |||||||
G | = | clearance to inside corner (see below) |
|
|
| 24" (61 cm) above the highest point when it passes | ||||||
H | = | *not to be installed above a meter/regulator assembly |
|
| through the roof surface and any other obstruction within | |||||||
|
| within 36" (91.4 cm) horizontally from the center line |
|
| a horizontal distance of 18" (45.7 cm) | |||||||
|
| of the regulator |
|
|
|
|
|
|
|
|
|
|
†vent shall not terminate directly above a
‡only permitted if veranda, porch, deck or balconey is fully open on a minimum of 2 sides beneath the floor* * as specified in CAN/CSA B149 (.1 or .2) Installation Codes (1991) for Canada and U.S.A.
Note: Local codes or regulations may require different clearances
Termination Clearances for Buildings with Combustible and Noncombustible Exteriors
Inside Corner
A
V
Outside Corner | Recessed Location |
|
| D |
|
| C | C |
A = 6" (15.2 cm) |
| E |
|
| |
V | V |
|
B = 6" (15.2 cm)
B
Balcony with No Side Wall
G |
V |
G = 12" (30.5 cm) minimum clearance
Balcony with Perpendicular Side Wall
H
V
J
Combustible &
Noncombustible
H = 24" (61 cm)
J = 20" (50.8 cm)
C = Maximum depth of 48" (121.9 cm) for recessed location
D = Minimum width for back wall of recessed location - Combustible - 38" (965 mm) Noncombustible - 24" (61 cm)
E = Clearance from corner in recessed location- Combustible - 6" (15.2 cm) Noncombustible - 2" (5.1 cm)