Lochinvar Armor AWH0400N Installation & Operation Manual page 26

4
Sidewall direct venting
Table 4C Other than Direct Vent Terminal Clearances
Clearance above grade, veranda, porch,
A =
deck, or balcony
Clearance to window or door that may
B =
be opened
Clearance to permanently closed
C =
window
Vertical clearance to ventilated soffit
located above the terminal within a
D =
horizontal distance of 2 ft (61 cm) from
the center line of the terminal.
E = Clearance to unventilated soffit
F = Clearance to outside corner
G = Clearance to inside corner
Clearance to each side of center line
H = extended above meter / regulator
assembly
Clearance to service regulator vent
I =
outlet
Clearance to nonmechanical air supply
J = inlet to building or the combustion air
inlet to any other appliance
Clearance to a mechanical air supply
K =
inlet
Clearance above paved sidewalk or
L = paved driveway located on public
property
Clearance under veranda, porch, deck,
M =
or balcony
* Clearance in accordance with local installation codes and the requirements of the gas supplier.
†
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 he fl oor.
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
26
Canadian Installations¹
12 in (30 cm)
6 in (15 cm) for appliances < 10,000 Btuh
(3 kW), 12 in (30 cm) for appliances >
10,000 Btuh (3 kW) and < 100,000 Btuh
(30 kW), 36 in (91 cm) for appliances >
100,000 Btuh (30 kW)
*
*
*
*
*
*
Above a regulator within 3 ft (91 cm)
horizontally of the vertical center line of the
regulator vent outlet to a maximum vertical
distance of 15 ft (4.5 m)
6 in (15 cm) for appliances < 10,000 Btuh
(3kW), 12 in (30 cm) for appliances >
10,000 Btuh (3 kW) and < 100,000 Btuh
(30 kW), 36 in (91 cm) for appliances >
100,000 Btuh (30 kW)
6 ft (1.83 m)
7 ft (2.13 m)†
12 in (30 cm)‡
Installation & Operation Manual
US Installations²
12 in (30 cm)
4 ft (1.2 m) below or to side of opening; 1 ft
(300 mm) above opening
*
*
*
*
*
*
*
4 ft (1.2 m) below or to side of opening; 1 ft
(300 mm) above opening
3 ft (91 cm) above if within 10 ft (3 m)
horizontally
7 ft (2.13 m) for mechanical draft systems
(Category I appliances). Vents for
Category II and IV appliances cannot be
located above public walkways or other
areas where condensate or vapor can
cause a nuisance or hazard.
*