Vertical Through-The-Roof Applications - Monessen Hearth KHLDV400 Install And Operation Instructions

KHLDV 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:
Total Angular Variation
18
Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
= 270°
VentInG InStaLLatIOn
40' Maximum Height
12' Minimum Height
24" Min.
Figure 18 -
Support Straps for Horizontal Runs
FP1183
max height
1
2
3
4
24" Min.
Figure 19 -
Maximum Elbow Usage
10'
Maximum
Support Straps
Every 3'
FP1183
FP1179
73D0024
1
2
3
4