Table of Contents
Advertisement
VENTING
iNFORMATiON
[]
VENTTERIVllNAL
(_
AiR
SUPPLY
iNLET
[]
AREAWHERETERMINAL
iS
NOT
PERMITTED
i
i
a
b
CANADIAN INSTALLATIONS
US INSTALLATIONS
Clearance
Location
2
Direct.Ven!,(2"pip_ e) &
,
I
Direct Vent
I
Conventional
Vent
I
(2:p pe)Fur"aoes I
(l:p pe)Furnaoes
A
Clearance
above grade, veranda,
porch, deck,
balcony,
or maximum
expected
snow level.
B
Clearance
to window or door that may be opened.
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) 1or appliances
> 100,000
Btuh (30Kw)
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)
4 ft. (1.2m) below or to side of opening;
1 lt. (300ram) above opening
C
Clearance
to permanently
closed window
Vertical clearance
to ventilated
soffit located above the
D
terminal within a horizontal
distance
of 2 feet (61cm)
*
*
*
from the center line o1 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
above
_
H
meter/regulator
assembly.
I
Clearance
to service regulator
vent outlet.
_
3 feet (91cm) within a height 15 feet
above the meter/regulator
assembly
3 feet (1.83m)
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)
Clearance
to non-mechanical
air supply inlet to
building or the combustion
air inlet to any other
appliance.
K
Clearance
to mechanical
air supply inlet.
L
Clearance
above paved sidewalk or driveway
located
on public property.
M
Clearance
under veranda,
porch, deck, or balcony.
6 feet (1.83m)
7 feet (2.13m) c
12 inches (30cm) d
NOTES:
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
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
d
m
4 ft. (1.2m) below or to side of opening;
1 lt. (300ram) above opening
3 ft. (91cm) above if within
10 feet (3m) horizontally
7 ft. (2.13m)
A ventshall not terminatedirectlyabovea sidewalkor paveddriveway that is locatedbetweentwo singlefamilydwellingsandservesbothdwellings.
Permitted only if veranda,porch,deck, or balconyis fullyopen ona minimumoftwo sidesbeneaththe floor.
Forclearancesnot specifiedin ANSIZ223.1/ NFPA54 or CSA B149.1,the followingstatement s hall be included:"Clearance in accordance with local installation codes,and the requirementsofthe
gassupplierand the manufacturers installation instructions."/"D_gagement conformeaux codesd'installation Iocaux,auxexigencesdu fournisseurdegaz et aux
instructions d'installation du fabricant".
Table 17. Vent Termination
Clearances
45
Advertisement
Table of Contents
