Vertical/Horizontal Termination Configurations - Monessen Hearth KHLDV400 Install And Operation Instructions

VentInG InStaLLatIOn
VertIcaL/HOrIZOntaL terMInatIOn
cOnFIGuratIOnS
Since it is very important that the venting system maintain its balance between the combustion
air intake and the flue gas exhaust, certain limitations as to vent configurations apply and must
be strictly adhered to.
The Vent Graph, showing the relationship between vertical and horizontal side wall venting, will help to
determine the various dimensions allowable. Figure 10
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.
When vent exits through foundations less than 20" below outcrop, the termination must be flush up with
outcropped wall above.
It is best to locate the fireplace in such a way that minimizes the number of offsets and horizontal vent
length.
The horizontal vent run refers to the total length of vent pipe from the flue collar of the fireplace (or the
top of the Transition Elbow) to the face of the finished outside wall.
•
The maximum number of 90° elbows per side wall installation is three (3). Figure 11
•
A minimum of 24" is required before a 90° elbow. If a 90° elbow is fitted directly after 24" vertical
section mounted to the top of the fireplace, the maximum horizontal vent run before the termination
or a vertical rise is 36" (914 mm). Figure 12
3 x 90°
Elbows
24" Min.
Figure 11 -
Maximum Three (3) 90° Elbows Per Installation
73D0024
FP1176
FP1176
max 90 bends
36"
(914 mm)
24"
Max.
(610 mm)
Figure 12 -
Maximum Horizontal Run with No Rise
KHLDV Series Gas Fireplace
Max 20"
36"
(914 mm)
Max.
FP1177
15