Lennox DR3025 User Manual

Page 14
DT/DTH VERTICAL VENTING FIGURES
VERTICAL VENTING WITHOUT ELBOWS
(DT/DTH - Top Vent Units)
V
V = 40 feet
Maximum
Install flashing and storm
collar at the point the vent pipe
passes through the roof.
Firestop/Spacer must be used any time
vent pipe passes through combustible
floor or ceiling or wall.
FIGURE 16
VERTICAL VENTING USING TWO 90 _ ELBOWS
(DT/DTH - Top Vent Units)
V1 H
1ft.min. 3ft.max.
2ft.min. 6ft.max.
3ft.min. 9ft.max.
4 ft. min. 12 ft. max.
5 ft. min. 15 ft. max.
17 ft. max.6ft.min.
H
V1
V2
V1 + V2 = 40 ft. Maximum.
H = 17 ft. Maximum.
Firestop/Spacer must be used any
time vent pipe passes through
combustible floor or ceiling or wall.
FIGURE 17
VERTICAL VENTING USING THREE 90
_ ELBOWS
(DT/DTH - Top Vent Units)
V1 H1 + H2
1ft.min. 3ft.max.
2ft.min. 6ft.max.
3ft.min. 9ft.max.
4 ft. min. 12 ft. max.
5 ft. min. 15 ft. max.
6 ft. min. 17 ft. max.
V1
H2
H1
V2
V1 + V2 = 40 ft. Maximum.
H1 + H2 = 17 ft. Maximum.
Firestop/Spacer must be used any
time vent pipe passes through
combustible floor or ceiling or wall.
FIGURE 18

Lennox DR3025 Specifications

General

Brand	Lennox
Model	DR3025
Category	Indoor Fireplace
Language	English