Vent Terminal Clearances - Napoleon HD81NT Installation And Operating Instructions Manual

10
3.3

VENT TERMINAL CLEARANCES

EN
INSTALLATIONS
CANADA
A 12" (304.8mm)
B 12" (304.8mm)
C 12" (304.8mm)*
18"
D
(457.2mm)**
12"
E
(304.8mm)**
F 0" (0mm)
0" (0mm)***
G
2" (50.8mm)***
H 3' (0.9m)
I 3' (0.9m)
J 12" (304.8mm)
K 6' (1.8m)
L 7' (2.1m)‡
12"
M
(304.8mm)††
N 16" (406.4mm)
O 2' (0.61m)†*
P 8' (2.4m)
Q 3' (0.9m)
R 6' (1.8m)
Δ
The terminal shall not be located less than 6 feet (1.8m) under a window that opens on a horizontal plane in a structure with three walls and a roof.
* Recommended to prevent condensation on windows and thermal breakage
** It is recommended to maximize the distance to vinyl clad soffi ts.
*** The periscope requires a minimum 18" (457.2mm) clearance from an inside corner.
**** This is a recommended distance. For additional requirements check local codes.
† 3 feet (0.91m) above if within 10 feet (3.1m) horizontally.
‡ A vent shall not terminate where it may cause hazardous frost or ice accumulations on adjacent property surfaces.
†† Permitted only if the veranda, porch, or deck is fully open on a minimum of two sides beneath the fl oor.
†* Recommended to prevent recirculation of exhaust products. For additional requirements check local codes.
W415-1406 / 11.19.14
U.S.A.
12" (304.8mm) Clearance above grade, veranda porch, deck or balcony.
Δ 9" (228.6mm) Δ Clearance to windows or doors that open.
12" (304.8mm)* Clearance to permanently closed windows.
Vertical clearance to ventilated soffi ts located above the terminal within a horizontal distance
18" (457.2mm)**
of 2' (0.6m) from the centerline of the terminal.
12" (304.8mm)** Clearance to unventilated soffi t.
0" (0mm) Clearance to an outside corner wall.
Clearance to an inside non-combustible corner wall or protruding non-combustible obstructions (chim-
0" (0mm)***
ney, etc.).
Clearance to an inside combustible corner wall or protruding combustible obstructions (vent
2" (50.8mm)***
chase, etc.).
Clearance to each side of the centerline extended above the meter / regulator assembly to a
3' (0.9m)****
maximum vertical distance of 15' (4.6m).
3' (0.9m)**** Clearance to a service regulator vent outlet.
Clearance to a non-mechanical air supply inlet to the building or a combustion air inlet to any other
9" (228.6mm)
appliance.
3' (0.9m) Clearance to a mechanical air supply inlet.
7' (2.1m)**** Clearance above a paved sidewalk or paved driveway located on public property.
12"
Clearance under a veranda, porch, deck or balcony.
(304.8mm)****
16" (406.4mm) Clearance above the roof.
2' (0.61m)†* Clearance from an adjacent wall including neighbouring buildings.
8' (2.4m) Roof must be non-combustible without openings.
3' (0.9m) See chart for wider wall dimensions.
See chart for deeper wall dimensions. The terminal shall not be installed on any wall that has
6' (1.8m)
an opening between the terminal and the open side of the structure.
Q
R
Q
= 3 feet
R
MIN
= 2 x Q
MAX
ACTUAL
(0.9m)
12.3C
M
P
G
R
MAX
(4.6m)