Napoleon WSX-N Series Installation And Operating Instructions Manual page 27

FIGURE 14A - DIRECT VENT TERMINAL CLEARANCES
D
E
B
L
Clearance above grade, veranda, porch,
A =
Clearance to window or door that may
B =
Clearance to permanently closed
C =
Vertical clearance to ventilated soffi t
located above the terminal within a
D =
horizontal distance of 2 feet (61cm) from
the center line of the terminal.
E = Clearance to unventilated soffi t
F = Clearance to outside corner
G = Clearance to inside corner
Clearance to each side of center line ex-
H =
tended above meter/regulator assembly
Clearance to service regulator vent
I =
Clearance to non mechanical air supply
J = inlet to building or the combustion air
inlet to any other appliance
Clearance to a mechanical air supply
K =
Clearance above paved sidewalk or
L = paved driveway located on public
Clearance under veranda, porch, deck,
M+ =
NOTES:
1) In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.
2) In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves
both dwellings.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the fl oor.
G
A
B
C
B
F
B
desk, or balcony
6in (15cm) for appliances ≤10'000Btuh
(3kW), 12in (30cm) for appliances
>10'000Btuh (3kW) and ≤100'00Btuh
be opened
(30kW), 36in (91cm) for appliances >
window
outlet
6in (15cm) for appliances ≤10'000Btuh
(3kW), 12in (30cm) for appliances
>10'000Btuh (3kW) and ≤100'00Btuh
(30kW), 36in (91cm) for appliances >
inlet
property
or balcony
Combustible &
H
Non-combustible
B
I
Openable
B
J
A
= Area where terminal is not permitted
Canadian Installations
12in (30cm)
100'00Btuh (30kW)
12in (30cm)
18in (46cm)
12in (30cm)
6in (15cm)
6in (15cm)
3ft (91cm) within a height 15ft (4.5m) above the meter / regulator
assembly
3ft (91cm)
100'00Btuh (30kW)
6ft (1.83m)
7ft (2.13m)†
>12in (30cm)‡
M
K
Legend:
= Vent Terminal
= Air Supply Inlet
US Installations
6in (15cm) for appliances ≤10'000Btuh
(3kW), 9in (23cm) for appliances
>10'000Btuh (3kW) and ≤50,000Btuh
(15kW), 12in (91cm) for appliances >
50'00Btuh (15kW)
12in (30cm)
18in (46cm)
12in (30cm)
6in (15cm)
6in (15cm)
6in (15cm) for appliances ≤10'000Btuh
(3kW), 9in (23cm) for appliances
>10'000Btuh (3kW) and ≤50,000Btuh
(15kW), 12in (91cm) for appliances >
50'00Btuh (15kW)
3ft (91cm) above if within 10ft (3m)
horizontally
W415-3101 / B / 01.09.23
27
IOM