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MLDV Series Gas Fireplace
VERTICAL THROUGH-THE-ROOF APPLICA-
TIONS
Install restrictor disc as shown in Figure 29 for vertically
vented applications.
Up to two (2) restrictor discs may be needed for 40' in-
stallation.
The two (2) restrictor discs suppled will work for most instal-
lations. If a third disc is needed order Part No. 56D3027.
You may use a reducer to 4" x 6
vented applications. If a reducer is used, only one restrictor
may be used.
Figure 29 -
Install Restrictor Disc into Fireplace Collar
A restrictor disc must be installed on any
vertical termination that is higher than 12'.
20
⁄
" or 4" x 7" in vertically
5
8
Restrictor Disc
Fireplace Collar
This Gas Fireplace has been approved for,
•
Vertical installations up to 40' (12 m) in height. Up to
a 10' (3 m) horizontal vent run can be installed within
the vent system using a maximum of two 90° elbows.
Figure 30
Maximum Height
40' (12 m)
Minimum Height
8' (2 m)
Maximum Height
40' (12 m)
Minimum Height
8' (2 m)
Figure 30 -
Support Straps for Horizontal Runs
•
Up to two 45° elbows may be used within the horizontal
run. For each 45° elbow used on the horizontal plane,
the maximum horizontal length must be reduced by 18"
(450 mm).
Example: Maximum horizontal length
No elbows
= 10' (3 m)
1 x 45° elbows
= 8.5' (2.6 m)
2 x 45° elbows
= 7' (2.1 m)
•
A minimum of an 8' (2.5 m) vertical rise is required.
VENTING INSTALLATION
10' (3 m)
Maximum
Support Straps
Every 3' (914 mm)
10' (3 m)
Maximum
Support Straps
Every 3' (914 mm)
FP1183
20306748
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