17
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Installation Instructions
901140-00, 01/2021
Innovative Hearth Products
DRT63ST-B Power-Vent Direct-Vent Fireplaces
NOTE: Convert inches into metric equivalent
measurement, as follows:
Millimeters (mm) = Inches x 25.4
Centimeters (cm) = Inches x 2.54
Meters (M) = Inches x .0254
Effective Vent Length
Model
Effective Length
SV4.5L6
4-1/2"
SV4.5L12
10-1/2"
SV4.5L24
22-1/2"
SV4.5L36
34-1/2"
SV4.5L48
46-1/2"
Table 7
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1
Flex Vent Sections Kits
Cat. #
Model
Description
60L10
SF-18
18 ft (5.49 m)*
compressed flex (see 750053M)
98K03
SF-12
12 ft (3.66 m)*
compressed flex (see 750052M)
VENT SECTION LENGTHS
Determine the number of straight vent sections
required. 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) net section lengths are available.
Refer to the Vent Section Length Chart.
Vertical (Offset) Installation
Analyze the vent routing and determine the
quantities of vent sections and number of
elbows required. Refer to
Figures 21 and 22
on Page 19
showing vent run requirements to
aid in selecting 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
for an aid in selecting length combinations.
Elbows are available in 90° and 45° configura-
tions. Refer to
Figure 20 on Page 18
for the
SV4.5 E45 and SV4.5 E90 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 6-3/4" (171 mm). The SV4.5LA is fitted with
a dimpled end (identical to a normal vent section
component) and a plain end with 3 pilot holes.
Slip the dimpled 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" (26 mm) clearance
to combustible materials for all vertical ele-
ments. Clearances for all horizontal elements
are 3" (77 mm) on top, 1" (26 mm) on sides
and 1" (26 mm) on the bottom.
