Vertical Through-The-Roof Applications - Majestic 500DVKHL Installation And Operating Instructions Manual

DVKHL Series Gas Fireplace
VertIcaL (tHrOuGH-tHe-rOOF)
appLIcatIOnS
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 18
nOte: Horizontal sections of this vent system require a
minimum of 3" clearances to combustibles at the top of the
flue and 1" clearance at the sides and bottom until the flue
penetrates the outside wall. A minimum 1" clearance all
around the flue is acceptable at this point of penetration.
Vertical sections of this vent system require a minimum of
1" clearance to combustibles on all sides of the pipe.
•
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)
1x45° elbows = 8.5' (2.6 m)
2x45° elbows = 7' (2.1 m)
•
A minimum of an 8' (2.5 m) vertical rise is required.
•
Two sets of 45°elbows offsets may be used within the
vertical sections. From 0 to a maximum of 8' (2.5 m)
of vent pipe can be used between elbows. Figure 19
•
The maximum angular variation allowed in the system
is 270°. Figure 19
•
The minimum height of the vent above the highest point
of penetration through the roof is 2' (610 mm).
Example: Elbow 1 =
Elbow 2 =
Elbow 3 =
Elbow 4 =
Total Angular Variation =
18
40' Maximum Height
12' Minimum Height
90°
45°
45°
90°
270°
VentInG InStaLLatIOn
Maximum
24" Min.
Support Straps
Every 3'
FP1183
Figure 18 -
Support Straps for Horizontal Runs
FP1183
max height
1
2
3
4
24" Min.
Figure 19 -
Maximum Elbow Usage
10'
1
FP1179
2
3
4
73D0129