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Innovative Hearth Products
DRT4200 Series Direct-Vent Gas Fireplaces
Connecting the Vent Pipe
10.
Secure Vent
lock connections (Figures 15–16, Page 23). 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 (Figures 15–16).
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
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 SV4.5LA Telescopic Vent Section has an effective length of
from 1-1/2 to 7" (38 to 178 mm). The SV4.5LA 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
Appliance Collar or
Vent Section
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.
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.
Table 13 - Effective Vent Length
SV4.5 direct-vent system components are unitized concentric pipe components featuring positive twist
®
Figure 16 - Connected vent
components
Arrow
Dimple
Locking
Incline
Channel
Model
SV4.5L6
SV4.5L12
SV4.5L24
SV4.5L36
SV4.5L48
components will engage and seal both the inner and outer vent pipe.
®
components
Dimple
Locking
Arrow
Incline
Channel
Effective Length
4-1/2"
10-1/2"
22-1/2"
34-1/2"
46-1/2"
900636-01, 01/2017
Figure 17 - Elbow Dimensions
4-13/16"
4 13/16 in.
(122 mm)
(122 mm)
Swivel Joint
Swivel Joint
Swivel Joint
Swivel Joint
°
(360°)
(360°)
(360
swivel)
°
(360
swivel)
SV4.5E45
SV4.5E45
SV4.5E90
SV4.5E90
(45° elbow)
°
(90° elbow)
(45
Elbow)
°
(90
Installation
8-1/8"
8 1/8 in.
(206 mm)
(206 mm)
Elbow)
23
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