Operating instructions

75D0004 19
MLDV Series Gas Fireplace

Example: Elbow 1 = 90°
Elbow  = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 70°
Figure 24 -
Maximum Elbow Usage
1 +  + 3 + 4 = 70°
1
2
3
4
1
2
3
4
FP1180
• For each 45° elbow installed in the horizontal run, the
length of the horizontal run MUST be reduced by 18"
(457 mm). This does not apply if the 45° elbows are
installed on the vertical part of the vent system.
• The maximum number of elbow degrees in a system is
70°. Figure 24


         

 Cut a 1Z\x"H x 10Z\x" W
hole through the interior wall.
 Cut a 10Z\x"H x 10Z\x"W
square hole through the exterior wall frame. Figure 25
 Hole opening should be 8Z\x"
(16 mm) in diameter.
. The center of the hole should line up with the center line
of the horizontal rigid vent pipe end. Allow 1/4" minimum
rise per foot. Figure 25


B\,

     B\,    



   




 B\,
    

       

FP1954
wall framing
10
1
/"
(67 mm)
10
1
/"
(67 mm)
8
1
/"
(16 mm)
Figure 25 -
Exterior Wall Framing Dimensions for 5" x 8"
Combustible
Wall
Noncombustible
Wall
FP1954
1. Locate and cut the vent opening in the wall. For com-
bustible walls rst frame in opening.
   Cut a 11Z\x"H x 9Z\x" W
hole through the interior wall.
    Cut a 9Z\x"H x 9Z\x"W
square hole through the exterior wall frame. Figure 26
 Hole opening should be 7Z\x"
(190 mm) in diameter.
. The center of the hole should line up with the center line
of the horizontal rigid vent pipe end. Allow 1/4" minimum
rise per foot. Figure 26