6 V53De Manual
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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)
B Clearance to window or door that may be opened
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)
*
J
Clearance to non-mechanical air supply inlet to building or the combuson
air inlet to any other appliance
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
L
Clearance above paved sidewalk or paved driveway located on public
property
7 (2.13 m) 7 (2.13 m)
M Clearance under veranda, porch, deck, or balcony
12 inches (30 cm) ‡
*
* For clearances not specied in ANSI Z223.1/NFPA 54 or CSA B149.1, one of the following shall be indicated:
A) a minimum clearance value determined by tesng in accordance with Clause 5.21, Dra hoods; or
B) a reference to the following footnote: “Clearance in accordance with local installaon codes and the requirements of the gas supplier.”
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
‡ Permied only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
Notes: 1) In accordance with the current CSA B149.1, Natural Gas and Propane Installaon Code.
2) In accordance with the current ANSI Z223.1/NFPA 54, Naonal Fuel Gas Code.
Exhaust Outlet Clearances
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
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