NOTE: DIAGRAMS AND ILLUSTRATIONS ARE REPRESENTATIVE AND ARE NOT DRAWN TO SCALE.
20
Figure 20-3: Horizontal Termination with Two 90° Elbows
Figure 20-2: Horizontal Termination with One 90° Elbow
Figure 20-4: Horizontal Termination with Three 90° Elbows
V
H
H 1
V 1
Vertical firestop/Spacer
u
horizontal
Termination
horizontal firestop/
Spacer
u
V
H
H
1
horizontal
Termination
Vertical firestop/
Spacer
u
horizontal firestop/
Spacer
u
TyPICAL hORIZONTAL
TERMINATION SySTEMS
Note: Building codes limit or
prohibit horizontal termination
in specific areas. for location
guidelines, see
Page 22
.
• Typical horizontal termination systems are
shown in
Figures 20-2, 20-3, and 20-4
.
• Select the vent design that matches your
requirements and make sure the vent run
conforms to the rise-to-run ratios listed in
Figure 20-1
.
• See the “VENTING INSTALLATION” section
on
Pages 13–17
for additional details.
__________
u
Vertical firestop/Spacer must be used
anywhere vent pipe passes through a
combustible floor or ceiling.
horizontal firestop/Spacer must be used
anywhere vent pipe passes through a
combustible wall.
For further details, see “Firestop/Spacer
Requirements” on
Page 13.
Install the provided Vent Restrictor, if
required (see
Page 16
).
A 90° elbow may NOT be attached di-
rectly to the appliance collar. A minimum
of 6" pipe must be used between the fire-
place collar and a 90° elbow.
For more
details, see “Elbows” on
Page 14.
V
H
horizontal
Termination
horizontal firestop/
Spacer
u
Vertical firestop/
Spacer
u
LENNOX HEARTH PRODUCTS • ELITE LINEAR VIEW DIRECT-VENT GAS FIREPLACE (MODELS LDV42, LDV54) • INSTALLATION INSTRUCTIONS
hORIZONTAL
TERMINATION SySTEMS
hORIZONTAL TERMINATION
SySTEM RISE-TO-RUN RATIOS
Max. Total h
Min. Total V
feet
(meters)
feet
(meters)
2
(0.610)
1
(0.305)
4.5
(1.372)
3
(0.914)
6
(1.829)
4
(1.220)
7.5
(2.286)
5
(1.524)
9
(2.743)
6
(1.729)
15
(4.572)
10
(3.048)
Total h = 15 ft (4.572 m) max.
Total h + Total V = 60 ft (18.3 m) max.
Example:
15 ft total Horizontal vent run requires
a min. of 10 ft total Vertical vent.
Figure 20-1
