
Heat & Glo • RED60 Installation Manual • 2159-980 Rev. D • 11/13
28
NOTE
: Maximum total vent run= Total vertical vent run + Total horizontal vent run
V1
H1
H2
H3
V2
MAXIMUM
VERTICAL
DROP
DIRECT VENT WITH 2 FT. MINIMUM VERTICAL OFF TOP OF APPLIANCE
MAX. ELBOWS
(45° & 90°)
MAX. TOTAL VENT RUN
Total V + Total H (FT.)
MAX. VERT. DROP
V
2
(FT.)
3
34 ft.
7 ft.
4
22 ft.
7 ft.
5
22 ft.
7 ft.
*1 ft. vertical drop decreases horizontal length by 2 ft.
Note
: 1 ft. of vertical drop decreases
horizontal length by 2 ft.
Figure 4.31 Power Vent Positioned After Vertical Drop
DIRECT VENT WITH 3 FT. MINIMUM VERTICAL OFF TOP OF APPLIANCE
MAX. ELBOWS
(45° & 90°)
MAX. TOTAL VENT RUN
Total V + Total H (FT.)
MAX. VERT. DROP
V
2
(FT.)
3
40 ft.
7 ft.
4
30 ft.
7 ft.
5
30 ft.
7 ft.
*1 ft. vertical drop decreases horizontal length by 2 ft.
DIRECT VENT WITH 4 FT. MINIMUM VERTICAL OFF TOP OF APPLIANCE
MAX. ELBOWS
(45° & 90°)
MAX. TOTAL VENT RUN
Total V + Total H (FT.)
MAX. VERT. DROP
V
2
(FT.)
3
56 ft.
7 ft.
4
50 ft.
7 ft.
5
40 ft.
7 ft.
6
30 ft.
7 ft.
*1 ft. vertical drop decreases horizontal length by 2 ft.
NOTICE:
If a a pipe con
fi
guration includes a vertical component
that goes downward, a vertical component going back upward is
not allowed.
EXAMPLE:
An appliance with 2 ft. vertical off the top (V
1
), a vertical drop of 5 ft. (V
2
) and a total of 3 elbows can have
a maximum vent run length (Total V + Total H) of 24 ft.
34 ft. - (5 ft vertical drop x 2*) = 24 ft.