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VC Series Manual 7
[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] Permied only if veranda, porch, deck, or balcony is fully open on a minimum of
two sides beneath the oor.
For clearances not specied in ANSI Z223.1/NFPA 54, clearances are in
accordance with local installaon codes and the requirements of the gas supplier.
Clearance to opposite wall is 24 inches (60 cm).
For indoor models, you must install a vent terminaon to bring in combuson air and expel exhaust.
Direct Vent (Indoor Unit) Other than direct vent (Outdoor unit)
Ref
Descripon
Canadian Installaons
(CSA B149.1)
US Installaons
(ANSI Z223.1 / NFPA 54)
Canadian Installaons
(CSA B149.1)
US Installaons
(ANSI Z223.1 / NFPA 54)
A Clearance above grade, veranda, porch, deck, or balcony 12 inches (30 cm) 12 inches (30 cm) 12 inches (30 cm) 12 inches (30 cm)
B Clearance to window or door that may be opened 36 inches (91 cm) 12 inches (30 cm)
6 in (15 cm) for appliances ≤ 10,000 Btuh (3
kW), 12 in (30 cm) for appliances > 10,000
Btuh (3 kW) and ≤ 100,000 Btuh (30 kW), 36 in
(91 cm) for appliances >100,000 Btuh (30 kW)
4 (1.2 m) below or to
side of opening; 1 (300
mm) above opening
C Clearance to permanently closed window * * * *
D
Vercal clearance to venlated sot, located above the
terminal within a horizontal distance of 2 feet (61 cm)
from the center line of the terminal
* * * *
E Clearance to unvenlated sot * * * *
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 (91 cm)
horizontally of the
vercal center line of
the regulator vent
outlet to a maximum
vercal distance of 15
(4.5 m)
*
Above a regulator within 3 (91 cm)
horizontally of the vercal center line of the
regulator vent outlet to a maximum vercal
distance of 15 (4.5 m)
*
J
Clearance to nonmechanical air supply inlet to building or
the combuson air inlet to any other appliance
36 inches (91 cm) 12 inches (30 cm)
6 in (15 cm) for appliances ≤ 10,000 Btuh (3
kW), 12 in (30 cm) for appliances > 10,000
Btuh (3 kW) and ≤ 100,000 Btuh (30 kW), 36 in
(91 cm) for appliances >100,000 Btuh (30 kW)
4 (1.2 m) below or to
side of opening; 1 (300
mm) above opening
K Clearance to a mechanical air supply inlet 6 (1.83 m)
3 (91 cm) above if
within 10 (3 m)
horizontally
6 (1.83 m)
3 (91 cm) above if within
10 feet (3 m) horizontally
L
Clearance above paved sidewalk or paved driveway
located on public property
7 (2.13 m) * 7 (2.13 m) [1] 7 . (2.13 m)
M Clearance under veranda, porch, deck, or balcony 12 inches (30 cm) * 12 inches (30 cm) [2] *
Terminal Clearances
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE TERMINAL IS
NOT PERMITTTED
X
V
SNOW
TERMINATION
Clearance in
Ref. A also
applies to
anticipated
snow line
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