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Note: 1 ft. of vertical drop decreases
horizontal length by 2 ft.
V1
EXAMPLE: An appliance with 3 ft. vertical off the top (V
a maximum vent run length (Total V + Total H) of 10 ft.
Figure 4.30 Power Vent Positioned Before Vertical Drop
H1
NOTE: Maximum total vent run= Total vertical vent run + Total horizontal vent run
DIRECT VENT WITH 2 FT. MINIMUM VERTICAL OFF TOP OF APPLIANCE
MAX. ELBOWS
(45° & 90°)
3
4
5
*1 ft. vertical drop decreases horizontal length by 2 ft.
DIRECT VENT WITH 3 FT. MINIMUM VERTICAL OFF TOP OF APPLIANCE
MAX. ELBOWS
(45° & 90°)
3
4
5
*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°)
3
4
5
6
*1 ft. vertical drop decreases horizontal length by 2 ft.
22 ft. - (6 ft vertical drop x 2*) = 10 ft.
Heat & Glo • RED60 Installation Manual • 2159-980 Rev. D • 11/13
H2
V2
MAXIMUM
NOTICE: If a a pipe configuration includes
VERTICAL
a vertical component that goes downward, a
DROP
vertical component going back upward is not
allowed.
MAX. TOTAL VENT RUN
Total V + Total H (FT.)
26 ft.
16 ft.
16 ft.
MAX. TOTAL VENT RUN
Total V + Total H (FT.)
30 ft.
22 ft.
22 ft.
MAX. TOTAL VENT RUN
Total V + Total H (FT.)
45 ft.
38 ft.
30 ft.
22 ft.
), a vertical drop of 6 ft. (V
1
H3
MAX. VERT. DROP
V
(FT.)
2
7 ft.
7 ft.
7 ft.
MAX. VERT. DROP
V
(FT.)
2
7 ft.
7 ft.
7 ft.
MAX. VERT. DROP
V
(FT.)
2
7 ft.
7 ft.
7 ft.
7 ft.
) and a total of 4 elbows can have
2
27
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