Page 31 of 55
J= Clearance to nonmechanical 6 in (15cm) for appliances
≤
10,000 6 in (15cm) for appliances
≤
10,000
air supply inlet to building or Btuh (3kW), 12 in (30 cm) for Btuh (3kW), 9 in (23 cm) for
the combustion air inlet to appliances >10,000 Btuh (3kW) and appliances >10,000 Btuh (3kW0 and
any other appliance
≤
100,000 Btuh (30kW), 36 in (91 cm)
≤
50,000 Btuh (15kW), 12 in (30cm)
for appliances >100,000 Btuh (30kW) for appliances >50,000 Btuh (15kW0
K= Clearance to a mechanical 6 ft (1.83 m) 3 ft (91 cm) above if within 10ft
air supply inlet (3 m) horizontally
L= Clearance above paved sidewalk 7 ft (2.13 m)
†
or paved driveway located on
public property *
M= Clearance under veranda, 12 in (30 cm)
‡
porch deck or balcony
*
0” 0”
3” 3”
1
In accordance with the current CSA B149.1,
Natural Gas and Propane Installation Code
2
In accordance with the current
ANSI Z223.1 /
NFPA 54, National Fuel Gas Code
†
A vent shall not terminate directly above a
sidewalk or paved driveway that is located
between two single family dwellings and
serves both dwellings
‡
Permitted only if veranda, porch, deck or
balcony is fully open on a minimum of two
sides beneath the floor
*
For clearances not specified in
ANSI Z223.1 /
NFPA 54 or CSA B149.1
one of the following
shall be indicated
a). A minimum clearance value determined by
testing in accordance with section 2.23.5, or:
b). A reference to the following footnote:
“Clearance in accordance with local installation
codes and the requirements of the gas supplier.”
24
” 24”
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Страница 25: ...Page 25 of 55 34 20 A A B B Example Where A A Vertical 2 And B B Horizontal 5 15 MINIMUM 15 MAXIMUM...
Страница 48: ...Page 48 of 55 8 0 LABEL INFORMATION...
Страница 50: ...Page 50 of 55 APPENDIX A AMERICAN FLAME VALVE INFORMATION...
Страница 51: ...Page 51 of 55 APPENDIX A Continued...
