Rear Vent Venting Runs - Montigo L52DF Installation & Maintenance Manual

L52DF Flush Indoor Gas Fireplace

Rear Vent Venting Runs

Note: Rear venting is ONLY available
in the two options!
The L52DF, Rear Vent has only two possible installation in the rear vent
configuration, one 90degree elbow off the back and straight up through
the roof of the structure, or Figure 23 with two elbows.
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.
Installation of Rear Vent
The following venting components are available for an L52DF, in a Rear
Vent configuration:
A - Termination
B - Stucco Kits
C - Flex Sections
D - Rigid
Sections
E - Elbows
NOTES: All dimension lengths for vertical or horizontal runs are
measured from center of the vent pipe.
IMPORTANT: Venting runs must fall within the limits set
by the venting graph (see Figure 22c).
Page 12
Installation
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)
Figure 23. Multi-elbow installation.
For L52DF distance 'H' must be a minimum of 50".The vent
run must comply with figure 22c.
Reduced Vertical Installation
(Available with Linear LDVPV47 Power Vent
It is possible to reduce vertical vent runs from 5"/8" venting to 4"/7"
venting. Reduced vertical venting may only be used when the Linear
(In-line) Power Vent is required. This is commonly due to longer than
normal vent runs, or unusually long horizontal Vent runs.
Figure 18. Reducing Vertical Vent from 5/8" to 4/7".
f i r e f e a t u r e
ONLY)
Part No. XG0185 - 092109