Advertisement
Installer's
Guide
®
F_VENTTERMINAL
(_
AIR SUPPLY INLET
[]
AREAWHERE
TERMINAL
IS NOT PERMITTED
Direct Vent Terminal Clearances
Canadian Installations
US Installations
Clearance above grade, veranda, porch, deck, or
A=
balcony
12 inches (30 cm)
12 inches (30 cm)
6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12
6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 9
inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/<
inches (23 cm) for appliances > 10,000 Btuh (3 kw) and =/<
B=
Clearance to window or door that may be opened
100,000 Btuh (30 kw), 36 inches (91 cm) for appliances >
50,000 Btuh (15 kw), 12 inches (30 cm) for appliances
> 50,000
100,000 Btuh (30 kw)
Btuh (15 kw)
C=
Clearance to permanently
closed window
Vertical clearance
to ventilated
soffit located above the
D=
terminal within a horizontal
distance of 2 feet (61 cm)
from the center line of the terminal
E=
Clearance to unventilated soffit
P=
Clearance to outside corner
G-
Clearance to inside corner
Clearance to each side of center line extended
above
3 feet (91 cm) with a height 15 feet (4.5 m) above the
H=
meter/regulator
assembly
meter/regulator
assembly
I=
Clearance to service regulator vent outlet
3 feet (91 cm)
6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12
6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 9
j=
Clearance to nonmechanical
air supply inlet to building
inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/<
inches (23 cm) for appliances > 10,000 Btuh (3 kw) and =/<
or the combustion
air inlet to any other appliance
100,000 Btuh (30 kw), 36 inches (91 cm) for appliances >
50,000 Btuh (15 kw), 12 inches (30 cm) for appliances
> 50,000
100,000 Btuh (30 kw)
Btuh (15 kw)
K=
Clearance to a mechanical
air supply inlet
6 feet (1.83m)
3 feet (91 cm) above if within 10 feet (3m) horizontally
Clearance above a paved sidewalk or paved driveway
7 feet (2.13 m) 1
L=
located on public property
M-
Clearance
under veranda, porch, deck, or balcony
"12 inches (30 cm) $
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/NPPA
54 National Puet Gas Code.
1". A vent shall not terminate directly above a sidewalk or paved driveway that is located between two singte family dwelling and serves both dwellings.
$. Pemitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
*
Clearance in accordance with local installation
codes and the requirements
of the gas supplier and the manufacturer's
Installation
Instructions.
16
18-CD19D6-27
Advertisement
