Majestic • MER36MN, MER42MN Installation Manual • 2599-980 Rev. B • 5/23
32
Figure 4.11
One Elbow
Top Vent - Horizontal Termination
MER42MN
V
1
Minimum
H
1
Maximum
Elbow Only
Not Allowed
6 in.
152 mm
2 ft.
610 mm
1 ft.
305 mm
3 ft.
914 mm
2 ft.
610 mm
6 ft.
1.8 m
3 ft.
914 mm
11 ft.
3.4 m
4 ft.
1.2 m
20 ft.
6.1 m
V
1
+ H
1
= 40 ft. (12.2 m) Maximum
H
1
= 20 ft. (6.1 m) Maximum
MER36MN
V
1
Minimum
H
1
Maximum
Elbow Only
Not Allowed
6 in.
152 mm
7 in.
178 mm
1 ft.
305 mm
11 in.
279 mm
1-1/2 ft.
457 mm
10 ft.
3.0 m
2 ft.
610 m
15 ft.
4.6 m
2-1/2 ft.
762 mm
18 ft.
5.5 m
3 ft.
914 mm
20 ft.
6.1 m
V
1
+ H
1
= 40 ft. (12.2 m) Maximum
H
1
= 20 ft. (6.1 m) Maximum
WARNING! Risk of Fire!
Elbow heat shield required
when V
1
= 2 ft. or less. Clearances to combustibles
must be maintained. See Section 5.A.
H
1
V
1