10
Direct Vent Terminal Clearances
Canadian Installations
1
US Installations
2
A
Clearance above grade, veranda, porch,
deck, or balcony
12” (30 cm)
12 in (30 cm)
B
Clearance to window or door that may be
opened
36” (91 cm)
12” (30 cm)
C
Clearance to window or door that may be
opened
*
*
D
Vertical clearance to ventilated soffit located
above the terminal within a horizontal
distance of 2 ft. (61cm) 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
36” (91 cm)
*
J
Clearance to nonmechanical air supply inlet
to building or the combustion air inlet to any
other appliance
36” (91cm)
12” (30 cm)
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)
α
*
M
Clearance under veranda, porch deck, or
balcony
12” (30 cm)
β
*
1
In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code
2
In accordance with ANSI Z223.1/ NFPA 54 National Fuel Gas Code
α
A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single
family dwellings and serves both dwellings
β
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. Clearance in accordance with local
installation codes and the requirements of the gas supplier
Summary of Contents for MICOFLAME GRANDE Series
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Page 20: ...16 Figure 7 Typical Heating System ...
Page 21: ...17 Figure 8 Typical Low Water Temperature System Figure 9 Typical Instantaneous Water System ...
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Page 49: ...45 16 EXPLODED VIEW MicoFlame Grande ...
Page 50: ...46 EXPLODED VIEW MicoFlame Grande Outdoor and or Condensing ...