Laars Pennant PNCH Installation And Operation Instructions Manual page 10

Page 10
A = Clearance above grade, veranda, porch,
deck, or balcony
B = Clearance to window or door that may be
opened
C = Clearance to permanently closed window
D = Vertical clearance to ventilated soffit located
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
H = Clearance to each side of center line
extended above meter/regulator assembly
I = Clearance to service regulator vent outlet
J = Clearance to nonmechanical air supply inlet
to building or the combustion air inlet to
any other appliance
K = Clearance to a mechanical air supply inlet
L = Clearance above paved sidewalk or paved
driveway located on public property
M = Clearance under veranda, porch, deck,
or balcony
Notes:
1. In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code.
2. In accordance with the current CSA-B149.1 Installation Codes.
3. Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
4. For clearances not specified in ANSI Z223.1 / NFPA 54, clearance is in accordance with local installation codes and the requirements of
the gas supplier.
5. For clearances not specified in CSA-B149.1, clearance is in accordance with local installation codes and the requirements of the gas
supplier.
Figure 3. Combustion Air and Vent Through Side Wall.
U.S. Installations (see note 1)
12 inches (30 cm)
4 feet (1.2 m) below or to side of opening;
1 foot (30 cm) above opening
See note 4
See note 4
See note 4
See note 4
See note 4
See note 4
See note 4
4 feet (1.2 m) below or to side of opening;
1 foot (30 cm) above opening
3 feet (91 cm) above if within 10 feet (3 m)
horizontally
Vent termination not allowed in this location
for category IV appliances. For Category III
appliances, vent must terminate at least 7
feet (2.13m) above the sidewalk or driveway. family dwellings and serves both dwellings.
See note 4
LAARS Heating Systems
Canadian Installations (see note 2)
12 inches (30 cm)
36 inches (91 cm)
See note 5
See note 5
See note 5
See note 5
See note 5
3 feet (91 cm) within a height 15 feet above
the meter/regulator assembly
3 feet (91 cm)
36 inches (91 cm)
6 feet (1.83 m)
Vent termination not allowed in this location
for category IV appliances. A vent shall not
terminate directly above a sidewalk or paved
driveway that is located between two single
For Category III appliances that do not violate
the previous condition, vent must terminate
at least 7 feet (2.13m) above the sidewalk or
driveway.
12 inches (30 cm) (see note 3)