Rear Vent Venting Runs - Montigo H38DF Installation Operation & Maintenance

H38DF Gas Fireplace

Rear Vent Venting Runs

The H38DF Rear Vent has three possible installations which do not
require vertical lift, all of these installations require that you install the
RHS101 heat sheild. Important: Rear Vent applications are only
for Natural Gas equipped models. All Propane equipped models
must be installed in a top vent application only.
Heat Shield
The heat shield (RHS101) must be used on all installations straight
through the wall, at the point where the vent pipe connects to the
termination. With the heat shield, proper vent clearances can be
maintained. The heat shield is not included with the fireplace.
To install the heat shield, slide one section over the vent pipe on the
inside of the wall opening, with the circular portion inside the wall cavity.
Screw the shield in place over the wall opening. Install the second
section on the outside of the wall opening sliding the circular portion into
the wall opening. Refer to Figure 19.
Figure 19. Heat Shield. Install by sliding over the vent pipe where it
passes through combustible construction.
1. Straight Installation.
The height from the hearth to the center of the termination is 32
½". For straight installations use a 20" extension pipe (PXT-20) with
female/female connections. For shorter installations, cut the PXT-20
to the desired length. Refer to figure 20a.
Ensure that the RHS101 heat sheild is installed before
attaching the pipe to the termination.
Note: For Rear Vent models, maximum horizontal run with no
vertical lift must never exceed 20".
PXT-20
Figure 20a. Extended installation. (NG Models Only)
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Installation
2. 45° Corner Installation.
Attach an PEL-45 (45° elbow) directly onto the flue collar. Cut the PXT-
20 to suit, and attach it to the PEL-45. Slide the fireplace into position
and attach to the termination. Ensure that the RHS101 heat sheild
is installed before attaching the pipe to the termination.
Figure 20b. Corner installation. (NG Models Only)
3. Corner Installation — 45° or less.
Use an PTO-3 termination and an PFL-1 or PFL-2 (12" or 24"
compressed length) and a frame, if appropriate. Flex may be turned
to obtain desired degree of angle required but must not exceed 45°.
Ensure that the RHS101 heat sheild is installed before
attaching the pipe to the termination.
Figure 20c. Flex installation. (NG Models Only)
Note: Through the wall venting kits are also available for
both the Straight and the Corner Installation. The Kit includes
a heat sheild, an PFL-18 (f/f) flexible pipe, and a termination with or
without a mounting frame.
Important: Natural Gas equipped models may be
installed using Top or Rear Vent applications.
However, all Propane equipped models must be
installed in a top vent application only.
PXT-20
PEL-45
Part No. XG0131