Description
US Installations
1
1
,
2
2
Canadian
Installations
2
,
3
3
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
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)
6 in (15 cm) for
appliances ≤ 10,000
Btuh (3 kW), 9 in (23
cm) for appliances >
10,000 Btuh (3 kW)
and ≤ 50,000 Btuh
(15 kW), 12 in (30
cm) for appliances >
50,000 Btuh (15 kW)
C Clearance to permanently closed window
*
*
D Vertical clearance to ventilated soffit located
above the terminal within a horizontal distance
of 2ft (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 ft (91 cm) within a
height 15 ft above
the 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 (4.5 m)
*
1
In accordance with the current CAN/CSA-B149 Installation Codes.
2
If locally adopted installation codes specify clearances different than those illustrated, then the most stringent shall apply.
3
In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code.
*
Clearances in accordance with local installation codes and the requirements of the gas supplier. The minimum distance from adjacent public
walkways, adjacent buildings, openable windows, and building openings shall not be less than those values specified in the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, and/or the Natural Gas and Propane Installation Code, CSA 8149.1.
3.7.6 Sidewall vent termination
To Next Page
Loading...
Need help?
General
