Laars MagnaTherm MGH1600 Installation And Operation Instructions For page 20

Page 16
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 (61 cm) 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 Vent termination not allowed in this location
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 CAN/CSA-B149 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 CAN/CSA-B149, clearance is in accordance with local installation codes and the requirements of the
gas supplier.
6. IMPORTANT: All terminals must be placed so that they remain a minimum 12" above expected snow line. Local codes may have
more specific requirements, and must be consulted.
Figure 5. Combustion Air and Vent Through Side Wall
U.S. Installations (see note 1)
12 inches (30 cm)
See note 6
Direct vent only: 12 inches (30 cm);
Other than Direct vent: 4 ft (1.2m) below or to
side of opening; 1 ft (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
Direct vent only: 36" (91cm)
Other than Direct vent: 4 ft (1.2m) below
or to side of opening; 1 ft (30 cm) above opening
3 feet (91 cm) above if within 10 feet (3 m)
horizontally
for category IV appliances.
See note 4
*When vent terminal is less than 10 feet (3 m) horizontally
from a forced air inlet, the terminal must be at least 3 feet
(0.9 m) above the air inlet. (US only)
LAARS Heating Systems
Canadian Installations (see note 2)
12 inches (30 cm)
See note 6
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)
7 ft (2.1 m)
See note 5
12 inches (30 cm)
See note 5