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P/N 471593 Rev. C 11-1-01
18
Detail H
INDOOR INSTALLATIONS
MINIMAX NT LOW NOx VENTING GUIDELINES
vent terminated at
least 24" above
any object within 10 ft.
Vent
Cap
Ridge
Chimney
3 ft. min.
2 ft. min.
10 ft.
4'
7'
4'
Air Supply
Ventilation
Air Supply
Combustion
Vent Hood
Walkway
3'
1' min.
1' min.
1' min.
above grade
Vent Hood
Vent Hood
E
H
D
F
G
G
F
B
C
A
must extend at least 3 ft. higher than the
point at which it passes through the roof,
or as permitted by local code.
must use a double-wall vent pipe through
the roof penetration.
must terminate with an approved (listed)
roof jack, storm collar, and vent/weather cap.
must be not less than 7 ft. above public walkways.
must be at least 3 ft. above any outside air intake located within a 10 ft. radius.
must NOT be within 3 ft. of an inside corner of the structure.
must be at least 1 ft. above grade.
must be located the following distances away from any door, window, or gravity air inlet:
4 ft. below
4 ft. horizontally
1 ft. above
Air Supply
See Air Supply Requirements Table.
B
A
D
E
F
J
K
L
C
G
Vent termination for side wall installations:
must be the same diameter as the
vent connector.
must be suitable for use with category III
appliances which have flue gas temperatures
of less than 400 deg. F.
may use a single wall vent pipe with
permanently sealed seams and joints.
Vent pipe extension:
Vent for roof penetration installations:
L
J
K
Recommended sources for
side wall Vent Hood; see page 15,
Section Venting.
(Table 2 on page 17.)
Figure 16.
Installation (Indoor)