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L38DF-ST* Indoor Gas Fireplace
Section 3-3: Installing a Wall Mounted Direct
Vent Termination
This section applies to installations where the direct vent termi-
nation will be wall mounted.
Installation of Termination with built in frame
A Termination with a Built-In Frame is installed during framing of
a structure.
1. Frame the termination opening to 11" x 11".
2. Install exterior sheathing to the structure framing.
3. Fasten the termination to the sheathing using a minimum of 4
screws.
Framing
11"
Exterior
Sheathing
11"
Figure 10. Installing a PTO4-F termination.
Installation of termination frame at time of framing
Terminations with a MSR frame allow the installation of the frame
prior to installation of the termination.
1. Frame the termination opening to 12" x 12".
2. Secure the MSR Frame to the exterior sheathing of the structure.
3. Fasten the termination to the MSR Frame using a minimum of 4
screws.
1
2"
Framing
Exterior
Sheathing
12"
Figure 10a. Installing a PTO termination with the MSR frame.
Installation of termination frame at time of framing in Masonry
Terminations with a BSR frame allow the installation of the frame
in masonry prior to the installation of the termination
1. Frame the BSR opening to 12" x 12".
2. Secure the BSR Frame to the exterior sheathing of the structure.
3. Fasten the termination to the BSR Frame using a minimum of 4
screws.
12"
Framing
Exterior
Sheathing
12"
Figure 10b. Installing a PTO termination with the BSR frame.
Page 12
Installation
Fastening Hardware,
minimum 4-screws
PTO-4F (5"/8")
Termination
MSR Frame
Fastening Hardware,
minimum 4-screws
PTO-4 (5"/8")
Termination
BSR Frame
Fastening Hardware,
minimum 4-screws
PTO-4 (5"/8")
Termination
Installation of termination from inside structure
A Termination with a MOSR Frame is installed from the inside of
the structure. These are commonly used in high-rise construc-
tion.
MOSR Frame
PTO-4 (5"/8")
Termination
Fastening Hardware,
minimum 4-screws
Figure 10c. Installing a PTO termination with MOSR frame.
1.
Frame the MOSR opening to 12" x 12".
2.
Fasten the MOSR frame to the interior side of the studs,
concrete, or finished wall construction using a minimum of 4
screws.
3.
Insert the termination into the MOSR frame as shown here,
(from the inside) and attach to the MOSR by installing a min.
quantity of 4 bolts into the threaded nuts on the MOSR Frame.
Installation of a termination shield for Vinyl Siding
The VSS Termination shield is installed when the exterior of a
structure is clad with Vinyl siding. It is placed directly above, and
on-center with the termination.
Figure 10d. Installing the VSS Vinyl Shield.
Installing Heat Guards over Terminations is recommended in in-
stallations where the termination is located within 7' feet above
grade, or above a pedestrian walkway, and may be Required by
code in Public areas.
Figure 11. Installing a PTO termination heat guard.
1.
Ensure that the two long mounting brackets are facing the
bottom of the termination. (See inset). This will provide
more heat protection at the top of the termination, where
temperatures are highest.
2.
Attach to the faceplate of the termination using four sheet
metal screws.
Framing,
12"
concrete or
other
materials
12"
Exterior
Sheathing,
concrete or
other materials
VSS Vinyl shield
PTO-4 (5"/8")
Termination
Exterior Vinyl
siding
MTKOG (5"/8")
XG0810 - 151126
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