User Guide

16
73D0024
KHLDV Series Gas Fireplace







The Vent Graph, showing the relationship between vertical
and horizontal side wall venting, will help to determine the
various dimensions allowable. Figure 10





Z\x



         

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 14
FP1176
max 90 bends
Figure 14 -
Maximum Three (3) 90° Elbows Per Installation
3 x 90°
Elbows
24" Min.
FP1176
Max 20"
Max 20"
36"
(914 mm)
Max.
36"
(914 mm)
Max.
FP1177
max horizontal run
24”
(610 mm)
FP1177
Figure 15 -
Maximum Horizontal Run with No Rise
A 10’
B 7’
10’
FP1959
max vent run w/elbows
Figure 16 -
Maximum Vent Run with Elbows
A + B = 17' Maximum
90° Elbow = 3'
FP1959
• 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 15
• If a 90° elbow is used in the horizontal vent run (level
height maintained) the horizontal vent length is reduced
by 36". Figures 14 and 15. This does not apply if the
90° elbows are used to increase or redirect a vertical
rise. Figure 16
 According to the vent graph (Page 16) the maxi-
mum horizontal vent length in a system with a 10' vertical
rise is 20’ (6 m) and if a 90° elbow is required in the hori-
zontal vent it must be reduced to 17' (5.2 m).
In Figures 16 and 17 dimension A plus B must not be
greater than 17' (5.2 m).