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EX17DT and EX22DT Installation and Operation Manual
13
4.3.2 Clearances
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE
TERMINAL IS NOT
PERMITTTED
Clearance in
Ref. A also
applies to
anticipated
snow line
Flue Terminal Clearances
Figure 5: Flue Terminal Clearances
Table 5: Clearances
[1] A vent shall not terminate directly above a sidewalk or paved
driveway that is located between two single family dwellings and
serves both dwellings.
[2] 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 Z223.1/NFPA 54
, clearances
are in accordance with local installation codes and the requirements
of the gas supplier.
Clearance to opposite wall is 24 inches (60 cm).
Ref
Description
Canadian Installations
US Installations
A
Clearance above grade, veranda, porch, deck, or balcony
12 inches (30 cm)
12 inches (30 cm)
B
Clearance to window or door that may be opened
12 inches (30 cm)
9 inches (23 cm)
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
3 feet (91 cm) within a height
15 feet (4.5 m) above the
meter/regulator assembly
*
I
Clearance to service regulator vent outlet
36 inches (91 cm)
*
J
Clearance to nonmechanical air supply inlet to building or the
combustion air inlet to any other appliance
12 inches (30 cm)
9 inches (23 cm)
K
Clearance to a mechanical air supply inlet
6 feet (1.83 m)
3 feet (91 cm) above if within
10 feet (3 m) horizontally
L
Clearance above paved sidewalk or paved driveway located on
public property
7 feet (2.13 m) [1]
*
M
Clearance under veranda, porch, deck, or balcony
12 inches (30 cm) [2]
*
Содержание EX1 7 DT
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