# 45466K003
Page 8
Figure 4
Sidewall Vent Terminal Clearances (Direct Vented Furnaces)
1
In accordance with the current
CSA B149.1, Natural Gas and
Propane Installation Code
2
In accordance with the current
ANSI Z2223.1/NFPA 54, National
Fuel Gas Code
†
A vent shall not terminate directly above a sidewalk or paved
driveway that is located between two single family dwellings and
serves both dwellings.
‡
Permitted only if veranda, porch, deck, or balcony is fully open on a
minimum of two sides beneath the floor.
* For clearances not specified in
ANSI Z2223.1/NFPA 54
or
CSA
B149.1
, the following statement shall be included:
“
Clearance in accordance with local installation codes and the
requirements of the gas supplier and the manufacturer
’
s installation
instructions.
”
†
‡
V
X
Vent Terminal
Air Supply Inlet
Area Where Terminal Is
Not Permitted
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