20
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Innovative Hearth Products
Montebello
®
ST Direct-Vent Gas Fireplaces
Installation Instructions
900355-00, 06/2016
Available Straight Vent Sections
Cat. No. Model No.
Description
Effective Length
H2250 SV8L6
6" (152 mm) Vent Section
4-1/2" (114 mm)
H2251 SV8L12
12" (305 mm) Vent Section
10-1/2" (267 mm)
H2252 SV8L24
24" (610 mm) Vent Section
22-1/2" (572 mm)
H2253 SV8L36
36" (914 mm) Vent Section
34-1/2" (876 mm)
H2254 SV8L48
48" (1219 mm) Vent Section
46-1/2" (1181 mm)
Table 7
See Page 42 for a list of all approved venting components.
Figure 18
Vertical (Roof) Termination Systems
This section includes configurations for verti-
cal (roof) termination systems with either
straight vertical venting (see
below
and
Page
23)
and offset vertical venting (see
Page 23)
.
Secure Vent
®
rigid vent pipe and termination
components are shown in the figures.
The tables on
Page 23
summarize each sys-
tem’s minimum and maximum vertical and
horizontal length values.
For vertical (roof) termination, the minimum
vent height above the roof and/or adjacent
walls is specified in ANSI Z223.1, latest edi-
tion (in Canada, the current CAN/CGA-B149.1
installation code) and by major building
codes. Always consult your local codes for
specific requirements. A general guide to
follow is the Gas Vent Rule (see
Figure 4 on
Page 11).
Vertical Termination System
with Straight Vertical Venting
NOTE: If not already done, install the
provided vent restrictor before proceed-
ing (see Page 19).
Determine the number of straight vent sec-
tions required. Available straight vent sec-
tions (and their effective lengths) are listed
in
Table 7
, below. See
Page 42
for all venting
components.
Plan the vent lengths so a joint does not occur
at the intersection of ceiling or roof joists.
Refer to the “VENT SECTION LENGTHS”
charts
at right
.
Firestop/Spacer
Termination
Flashing and
Storm Collar
Min. 1" (26 mm)
Clearance to
Combustibles
Secure Vent
Vent Sections
(SV8L6, SV8L12,
SV8L24, SV8L36,
SV8L48)
Max. 60 ft
(18 m)
Min. 6 ft
(1.8 m)
Vertical Termination System
with Straight Vertical Venting
Metric
Conversion
Inches x 25.4 = mm.
Inches x 2.54 = cm.
Inches x 0.0254 = m.
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