Installation Guide

Polypropylene (PP) Common Venting Installation Instructions 23
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Exhaust Vent Terminaon Clearances
Direct Vent for indoor models, you must install terminaons to bring in combuson air and expel exhaust
SNOW
TERMINATION
Clearance in
Ref. A also
applies to
anticipated
snow line
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
X
V
Clearance to opposite wall is 24 in. (60 cm).
[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.
 Clearances are in accordance with local installation codes and
the requirements of the gas supplier. (Dégagement conforme
aux codes d’installation locaux et aux exigences du foumisseur
de gaz.)
Canadian Installations
(CSA B149.1)
U.S. Installations
(ANSI Z223.1 /NFPA 54)
Ref
Description Direct Vent (Indoor Unit) Direct Vent (Indoor Unit)
A
Clearance above grade, veranda, porch, deck, or balcony
12 in. (30 cm) 12 in. (30 cm)
B
Clearance to window or door that may be opened
36 in. (91 cm) 12 in. (30 cm)
C
Clearance to permanently closed window
* *
D
Vertical clearance to ventilated soffit, located above the terminal
within a horizontal distance of 2 ft (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
* *
I Clearance to service regulator vent outlet
Above a regulator within 3 ft
(91 cm) horizontally of the
vertical center line of the
regulator vent outlet to a
maximum vertical distance of 15
ft (4 m)
*
J
Clearance to non-mechanical air supply inlet to building or the
combustion air inlet to any other appliance
36 in. (91 cm) 12 in. (30 cm)
K Clearance to a mechanical air supply inlet 6 ft (1.83 m)
3 ft (91 cm) above if within
10 ft (3 m) horizontally
L
Clearance above paved sidewalk or paved driveway located on
public property
7 ft (2.13 m) [1] *
M Clearance under veranda, porch, deck, or balcony 12 in. (30 cm) [2] *