Raypak XPAK 85 User Manual
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4. MINIMUM CLEARANCES FROM VENT/AIR INLET TERMINATION
U.S. Installations1
Canadian Installations2
A
Clearance above grade, veranda,
porch, deck, or balcony
1 ft (30 cm)
1 ft (30 cm)
B
Clearance to window or door that may
4 ft (1.2m) below or to side of
be opened
opening; 1 foot (30 cm) above
3 ft (91 cm)
opening
C
Clearance to permanently closed window
*
*
D
Vertical clearance to ventilated soffit located above
5 ft (1.5m)
*
the terminal within a horizontal distance of 2 ft (61cm)
from the centerline of the terminal
E
Clearance to unventilated soffit
*
*
F
Clearance to outside corner
*
*
G
Clearance to inside corner
6 ft (1.83m)
*
H
Clearance to each side of center line
*
3 ft (91 cm) within a height
extended above meter/regulator assembly
15 ft above the meter/ regulator
assembly
I
Clearance to service regulator vent outlet
*
6 ft (1.83m)
J
Clearance to non-mechanical air supply inlet to
4 ft (1.2m) below or to
3 ft (91 cm)
building or the combustion air inlet to any other
side of opening; 1 ft
appliance
(30 cm) above opening
K
Clearance to mechanical air supply inlet
3 ft (91 cm) above if within
6 ft (1.83m)
10 ft (3m) horizontally
L
Clearance above paved sidewalk or paved driveway
7 ft (2.13m)
7 ft (2.13m) t
located on public property
M
Clearance under veranda, porch, deck or balcony
*
12 in. (30 cm) TT
1 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code
2 In accordance with the current CAN/CGA-B149 Installation Codes
t Vent terminal shall not terminate directly above sidewalk or paved driveway located between 2 single family dwellings that serves both dwellings
TT Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor and top of terminal and underside
of veranda, porch, deck or balcony is greater than 1 ft (30cm)
* Clearances in accordance with local installation codes and the requirements of the gas supplier
Fig. 20
V = vent terminal X = air supply inlet \\\ = area where terminal is not permitted
Tab. 6