Lennox DR3530 User Manual

Page 18
DR/DRH HORIZONTAL VENTING FIGURES
HORIZONTAL VENTING WITHOUT ELBOWS
(DR/DRH - Rear Vent Units)
**H
ONLY THE RECTANGULAR TERMINATION MAY BE USED.
Firestop/Spacer must be used any
time vent pipe passes through
combustible floor or ceiling or wall.
RIGID VENT PIPE SHOWN; FLEXIBLE VENT PIPE
MAYALSOBEUSED.
7in.
**For 4540 models
H = 18 in. (457 mm) Maximum.
**For 3025, 3530, and 4035 models
H = 28 in. (711 mm) Maximum.
FIGURE 26
HORIZONTAL VENTING USING TWO 90 _ ELBOWS
(DR/DRH - Rear Vent Units)
VH1
2ft.min. 4ft.max.
3ft.min. 6ft.max.
4ft.min. 8ft.max.
5ft.min. 8ft.max.
6ft.min. 8ft.max.
H1 + H2
6ft.max.
9ft.max.
12 ft. max.
15 ft. max.
17 ft. max.
1ft.min. 2ft.max. 3ft.max.
H2
V
H1
20 ft. max. 8 ft. max.
17 ft. max.
Firestop/Spacer must be used any
time vent pipe passes through
combustible floor or ceiling or wall.
RIGID VENT PIPE SHOWN; *FLEXIBLE VENT
PIPE MAY ALSO BE USED.
*NOTE: THE LONGEST LENGTH OF FLEX AVAILABLE
IS 48 INCHES OF COMPRESSED FLEX.
Rectangular termination shown;
round termination may also be used.
FIGURE 27
HORIZONTAL VENTING USING THREE 90 _ ELBOWS
(DR/DRH - Rear Vent Units)
V
H1
2ft.min. 4ft.max.
3ft.min. 6ft.max.
4ft.min. 8ft.max.
5ft.min. 8ft.max.
20 ft. max. 8 ft. max.
H1 + H2 + H3
6ft.max.
9ft.max.
12 ft. max.
15 ft. max.
17 ft. max.
V
H3
H2
H1
1ft.min. 2ft.max. 3ft.max.
6 ft. min. 8 ft. max. 17 ft. max.
Firestop/Spacer must be used any
time vent pipe passes through
combustible floor or ceiling or wall.
RIGID VENT PIPE SHOWN; *FLEXIBLE VENT
PIPE MAY ALSO BE USED.
Rectangular termination shown;
round termination may also be used.
*NOTE: THE LONGEST LENGTH OF FLEX AVAILABLE
IS 48 INCHES OF COMPRESSED FLEX.
FIGURE 28

Lennox DR3530 Specifications

General

Brand	Lennox
Model	DR3530
Category	Indoor Fireplace
Language	English