Venting Information - Nordyne CMF95 Series Installation Instructions Manual

VENT TERMINAL
Clearance Location
Clearance above grade, veranda, porch, deck,
A
balcony, or maximum expected snow level.
Clearance to window or door that may be
B
opened.
C
Clearance to permanently closed window
Vertical clearance to ventilated soffit located
D
above the terminal within a horizontal distance of
2 feet (61cm) 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 extended
H
above meter/regulator assembly.
I
Clearance to service regulator vent outlet.
Clearance to non-mechanical air supply inlet to
J
building or the combustion air inlet to any other
appliance.
K
Clearance to mechanical air supply inlet.
Clearance above paved sidewalk or driveway
L
located on public property.
Clearance under open veranda, porch, deck,
M
or balcony.
a =
In accordance with the current CSA B149.1 Natural Gas and Propane Installation Guide Code
b =
In accordance with the current ANSI Z223.1 / NFPA 54 Natural Fuel Gas Code
c =
A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
d =
Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
32

VENTING INFORMATION

AIR SUPPLY INLET
CANADIAN INSTALLATIONS
Direct Vent (2-pipe) &
Conventional Vent (1-pipe) Furnaces
12 inches (30cm)
6 inches (15cm) for appliances
< 10,000 Btuh (3kW)
12 inches (30cm) for appliances
10,000 Btuh - 100,000 Btuh (30kW)
36 inches (91cm) for appliances
> 100,000 Btuh (30Kw)
12 inches (30cm) suggested or as needed to avoid
condensation on glass.
Clearance must be greater than the depth of
the soffit unless it complies with Figure 20
(page 33)
Clearance must be greater than the depth of the
soffit unless it complies with Figure 20 (page 33)
All Clearances in this Figure apply
on both walls
All Clearances in this Figure apply
on both walls
3 feet (91cm) within a height 15 feet
above the meter/regulator assembly
3 feet (91cm)
6 inches (15cm) for appliances
< 10,000 Btuh (3kW)
12 inches (30cm) for appliances
10,000 Btuh - 100,000 Btuh (30kW)
36 inches (91cm) for appliances
> 100,000 Btuh (30Kw)
6 feet (1.83m)
c
7 feet (2.13m)
d
12 inches (30cm)
NOTES:
Table 13. Vent Termination Clearances
AREA WHERE TERMINAL IS NOT PERMITTED
a
US INSTALLATIONS
Direct Vent
(2-pipe) Furnaces
12 inches (30cm)
6 inches (15cm) for appliances
< 10,000 Btuh (3kW)
9 inches (23cm) for appliances
10,000 Btuh - 50,000 Btuh (30kW)
12 inches (30cm) for appliances
> 50,000 Btuh (30Kw)
12 inches (30cm) suggested or as needed to avoid condensation on glass.
Clearance must be greater than the depth of the soffit unless
it complies with Figure 20 (page 33)
Clearance must be greater than the depth of the soffit unless
it complies with Figure 20 (page 33)
All Clearances in this Figure apply on both walls
All Clearances in this Figure apply on both walls
3 feet (91cm) within a height of 15 feet
3 feet (91cm) in any direction
6 inches (15cm) for appliances
< 10,000 Btuh (3kW)
9 inches (23cm) for appliances
10,000 Btuh - 50,000 Btuh (30kW)
12 inches (30cm) for appliances
> 50,000 Btuh (30Kw)
3 feet (91cm) above if within
10 feet (3m) horizontally
c
7 feet (2.13m)
d
12 inches (30cm)
b
Conventional Vent
(1-pipe) Furnaces
12 inches (30cm)
4 ft. (1.2m) below or to side of
opening; 1 ft. (300mm) above
opening
4 ft. (1.2m) below or to side of
opening; 1 ft. (300mm) above
opening
3 ft. (91cm) above if within
10 feet (3m) horizontally
7 ft. (2.13m)
d
12 inches (30cm)