NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
27
Innovative Hearth Products
Montebello
®
ST Direct-Vent Gas Fireplaces
Installation Instructions
900355-00, 06/2016
Example: If 20 feet of (H+H
1
)
horizontal vent run is needed,
then 10 feet minimum of (V)
vertical vent will be required.
Figure 34 - Horizontal Termination with Three 90-Degree Elbows
V
H
H1
Horizontal Firestop/Spacer
(SV8HF4)
Vertical
Firestop/Spacer
(SV8BF)
Horizontal Firestop/Spacer
(SV8HF4)
V
H
H 1
V 1
Horizontal
Firestop/Spacer
(SV8HF4)
Vertical
Firestop/Spacer
(SV8BF)
Horizontal
Firestop/Spacer
(SV8HF4)
Vertical
Firestop/Spacer
(SV8BF)
Table D
H
+ H
1
max.
V min.
feet (meters)
feet
(meters)
3.5
(1.07)
2.5
(0.762)
6.5
(1.98)
3.5
(1.07)
8.5
(2.6)
4.5
(1.37)
10.5
(3.2)
5.5
(1.68)
12.5
(3.8)
6.5
(1.98)
14.5
(4.4)
7.5
(2.3)
16.5
(5.0)
8.5
(2.6)
18.5
(5.6)
9.5
(2.9)
20
(6.0)
10
(3.0)
V +
H
+ H
1
= 40 ft (12.4 m) max.
H
+ H
1
= 20 ft (6.2 m) max.
Table E
H
+ H
1
= 20 ft (6.2 m) max.
V
+ V
1
+
H
+ H
1
= 40 ft (12.4 m) max.
V = 2.5 ft (0.762 m) min.
V
+ V
1
= 11 ft (3.35 m) min.
HORIZONTAL TERMINATION SYSTEM WITH HORIZONTAL/INCLINED RUN USING THREE 90-DEGREE ELBOWS
(Elbow connection not directly at appliance)
NOTE: The provided vent restrictor is required in all venting systems. See Page 19 for settings.
HORIZONTAL TERMINATION SYSTEM WITH HORIZONTAL/INCLINED RUN USING TWO 90-DEGREE ELBOWS
(Elbow connection not directly at appliance)
NOTE: The provided vent restrictor is required in all venting systems.
See Page 16 for settings.
HORIZONTAL VENT FIGURES/TABLES
(continued)
Figure 33 - Horizontal Termination with Two 90-Degree Elbows
See
Table 8 on Page 26
as an aid in selecting venting
components for a particular range of exterior wall thicknesses.
See
Table 8 on Page 26
as an aid in selecting venting
components for a particular range of exterior wall thicknesses.