Installation
900077-00, 01/2018
Innovative Hearth Products
DRL6500 Linear Direct-Vent Gas Fireplaces
23
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Table 16 - 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”
Connecting the vent pipe
Secure Vent
®
SV4.5 direct-vent system components are unitized concentric pipe components featuring positive twist
lock connections (
Figure 18
and
Figure 19
). All of the fireplaces covered in this document are fitted with collars
having locking inclined channels. The dimpled end of the vent components fit over the fireplace/vent collar to create
the positive twist lock connection.
1.
Align the dimpled end over the collar, adjusting the radial alignment until the four (4) locking dimples are aligned
with the inlet of the four (4) inclined channels on the collar (
Figure 15
).
2.
Push the vent component against the collar until it fully engages, then twist the component clockwise, running the
dimples down and along the incline channels until they seat at the end of the channels.
NOTE:
The unitized design of the Secure Vent
®
components will engage and seal both the inner and outer vent
pipe.
3.
If desired, a #6 x 1/2” screw can be used at the joint, but is not required as the pipe will securely lock when twisted
(
Figure 16
).
Where required, a telescopic vent section (SV4.5LA) may be used to provide the installer with an option to install
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 telescopic vent section has an effective length of from 1-1/2”
to 7-1/2” (38–191 mm). The telescopic vent section is fitted with a locking inclined channel end (identical to a normal
vent section component) and a plain end with three (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 (3) screws.
Figure 15 - Connecting vent
components
Figure 16 - Connected vent
components
Figure 17 - Elbow Dimensions
Dimple
Locking
Incline
Channel
Arrow
Appliance Collar or
Vent Section
Dimple
Locking
Incline
Channel
Arrow
SV4.5E90
(90
°
Elbow)
8 1/8 in.
(206 mm)
Swivel Joint
(360
°
swivel)
4 13/16 in.
(122 mm)
SV4.5E45
(45
°
Elbow)
Swivel Joint
(360
°
swivel)
4-13/16”
(122 mm)
8-1/8”
(206 mm)
Swivel Joint
(360°)
Swivel Joint
(360°)
SV4.5E45
(45° elbow)
SV4.5E90
(90° elbow)
Vent elbows
Vent elbows are available in 90° and 45° configurations. Refer to
Figure 17
for the SV4.5E45 and SV4.5E90 elbow
dimensions. The elbows feature a twist section to allow them to be routed about the center axis of their initial collar
section to align with the required direction of the next vent run element. Two 45° elbows may be used in place of one
90° elbow. When planning vent runs, make allowances for elbows.
NOTE:
A 90° elbow may NOT be attached directly to the appliance collar. A minimum 12” pipe section must be used
between the fireplace collar and a 90° elbow.
1.
Rotate the elbow in a clockwise direction (to avoid the possibility of unlocking any of the previously connected vent
sections) for proper alignment (
Figure 17
). See
Connecting the vent pipe
for more information.
Vent section length table
Table 17
will assist calculating how many vent sections are needed for the planned vent configuration. When a vent
section is engaged with another section, its effective length will be 1-1/2” shorter.
