Vent Termination Clearances - Superior DRL3042TEN Installation And Operation Instructions Manual

Innovative Hearth Products
Superior™ DRL3000 Linear Direct-Vent Gas Fireplaces

VENT TERMINATION CLEARANCES

The following vent termination figures and charts should be used. Install venting according to local codes, these
instructions, the current National Fuel Gas Code (ANSI Z223.1/NFPA 54) in the USA or the current standards of CAN/
CGA-B149.1 in Canada.
Vertical Vent Termination Clearances
Terminate multiple vent terminations according to the installation codes listed above and Figure 4.
Figure 4: Multiple Terminations
Terminate single vent caps relative to building components according to Table 6 and Figure 4.
Table 6: Termination Heights for Vents above Flat or Sloped Roofs (NFPA 54 / ANSI Z223.1)—Gas Vent Rule
Horizontal overhang
2 ft minimum
Vent
termination
Storm collar
Flashing
Concentric
vent pipe
Horizontal Vent Termination Clearances
The horizontal vent termination must have a minimum of 6" (152 mm) clearance to any overhead combustible
projection of 2 1/2" (64 mm) or less (Figure 5). For projections exceeding 2 1/2" (64 mm) (Figure 5). For additional
vent location restrictions refer to Table 7.
All horizontal terminations may be located as close as 6" (152mm) to any (non-combustible and combustible)
exterior sidewall. This distance may be decreased to 2" (51mm) for noncombustible exterior sidewalls with
SV4.5HT-2 termination (Table 21).
Figure 5: Horizontal Vent Termination Clearances
greater than 2 1/2" in length
Ventilated
(457 mm)
12"
(305 mm)
minimum
2 ft Vertical
minimum
wall
Lowest
discharge
opening
H*
X
12
Roof pitch is X/12
1" (25.4 mm) minimum
clearance to combustibles
*H = minimum height from roof to
lowest discharge opening of vent
Combustible projection
2 1/2" or less in length
Combustible projection
soffit Unventilated
soffit
6
(152)
18" 12"
(305 mm)
Termination kit
Roof Pitch
Flat to 6/12
6/12 to 7/12
7/12 to 8/12
8/12 to 9/12
9/12 to 10/12
10/12 to 11/12
11/12 to 12/12
12/12 to 14/12
14/12 to 16/12
16/12 to 18/12
18/12 to 20/12
20/12 to 21/12
6"
Termination kit
Installation
900079-02 05/2015
Termination Height *
1.0 ft (0.3 m)
1.25 ft (0.38 m)
1.5 ft (0.46 m)
2.0 ft (0.61 m)
2.5 ft (0.76 m)
3.25 ft (0.99 m)
4.0 ft (1.22 m)
5.0 ft (1.52 m)
6.0 ft (1.83 m)
7.0 ft (2.13 m)
7.5 ft (2.29 m)
8.0 ft (2.44 m)
NOTE: See Figure 27
on Page 31 for
exterior wall recess
allowances for the
SV4.5HT-2 termination.
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