Figure 14 – Lennox Hearth ADAGIO-MP User Manual
Page 13
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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VENT SECTION LENGTH CHART
Nominal Section
Length (inches)
6
12
24
6
48
Net Section
Length (inches)
4 ½
10 ½
22 ½
4 ½
46 ½
Height of Vent
Number of Vent Sections
*inches
feet
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VENT SECTION LENGTH CHART
Nominal
Section Length
(inches)
6
12
24
6
48
Net Section
Length (inches)
4 ½
10 ½
22 ½
4 ½ 46 ½
Height of Vent
Number of Vent Sections
*inches
feet
T
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Figure 14
10-1/2" Min.
(267 mm)
10-1/2" Min.
(267 mm)
Ceiling Framing
Plumb Bob
Roof Framing
Vertical (Offset) Installation
Analyze the vent routing and determine the
quantities of vent sections and number of el-
bows required. Refer to Vertical Vent Figures
and Tables on Page 16 to select the type of
vertical installation desired. Vent sections are
available in net lengths of 4-1/2" (114 mm),
10-1/2" (267 mm), 22-1/2" (572 mm), 34-1/2"
(876 mm) and 46-1/2" (1181 mm). Refer to the
Vent Section Length Chart on this page for an
aid in selecting length combinations. Elbows are
available in 90° and 45° configurations. Refer
to Figure 18 for the SV4.5E45 and SV4.5E90
elbow dimensional specifications.
Where required, a telescopic vent section
(SV4.5LA) may be used to provide the installer
with an option in installing in tight and confined
spaces or where the vent run made up of fixed
length pieces develops a joint in a undesirable
location, or will not build up to the required
length. The SV4.5LA Telescopic Vent Section
has an effective length of from 1-1/2" (38 mm)
to 7-1/2 " (191 mm). The SV4.5LA is fitted with
a locking inclined channel end (identical to a
normal vent section component) and a plain end
with 3 pilot holes. Slip the plain end over the
locking channel end of a standard SV4.5 vent
component the required distance and secure
with three screws.
Maintain a minimum 1" (25 mm) clear-
ance to combustible materials for all
vertical vent components. Clearances for
all horizontal vent components are "
(76 mm) on top, 1" (25 mm) on sides and 1"
(25 mm) on the bottom.
A. Frame ceiling opening - Use a plumb line
from the ceiling above the appliance to locate
center of the vertical run. Cut and/or frame an
opening, 10-1/2" x 10-1/2" (267 mm x 267
mm) inside dimensions, about this center mark
(Figure 14).