Rear Vent Venting Runs - Montigo L38DF series Installation & Maintenance Manual

f i r e f e a t u r e
RHS101 Heat Shield,
Outer Section.
Termination
Figure 8c. RHS101 Installation. (Install by sliding over vent pipe where
it passes through the combustible construction.
32' max
* Minimum 1-1/2" clearance to combustibles
Figure 17. Vertical venting with 2 offsets (1 offset= two 90° bends).

Rear Vent Venting Runs

The L38DF, Rear Vent has three possible installations which do not
require vertical lift, all of these installations require that you install the
RHS101 heat shield.
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.
Part No. XG0180 - 081009
Installation
Drywall
RHS101 Heat Shield,
Inner Section.
Vent from fireplace
Framing
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.
Installation
The following venting components are available
for an L38-DF, in a Rear Vent installation:
A - Termination
B - Stucco Kits
C - Flex Sections
D - Rigid
Sections
E - Elbows
1. Straight Installation.
The height from the hearth to the center of the termination is 21
3/4". For straight installations use a 12" extension pipe (PXT-12)
with female/female connections. For shorter installations, cut the
PXT-12 to the desired length. Refer to figure 19a.
Ensure that the RHS101 heat shield is installed before attaching
the pipe to the termination.
Note: For Rear Vent models, maximum horizontal run with no
vertical lift must never exceed 12".
L38DF Flush Indoor Gas Fireplace
5" / 8" Venting
PTO-3 (3" Length)
PTO-3F (3" Length)
MSR (Stucco Frame)
BSR-4 (4" Brick Frame)
BSR-6 (6" Brick Frame)
MOSR (Stucco Can)
PFL-1 (12" Section)
PFL-2 (24" Section)
PFL-3 (36" Section)
PFL-4 (48" Section)
PEXT-1 (12" m/f Section)
PXT-20 (20" section)
PEXT-2 (24" m/f Section)
PEXT-3 (36" m/f Section)
PEXT-4 (48" m/f Section)
PEL-90MM (m/m 90° Elbow)
PEL-90FF (f/f 90° Elbow)
PEL-90FM (f/m 90° Elbow)
PEL-45FM (f/m 45° Elbow)
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