Vent Termination - Napoleon 9600 SERIES Installation And Operating Instructions Manual

All exhaust piping must be installed in accordance with CAN/CGA-B149.in Canada; the latest edition of
National Fuel Gas Code, NFPA 54 / ANSI Z223.1 in
the United States, as well as in accordance with local
codes.
Size the combustion air and exhaust piping in
accordance with Table 4. When calculating allowable
vent lengths, be sure to count all termination fi ttings in
addition to counting the concentric vent as a straight
pipe.
Take the building orientation and the presence of other
buildings or other nearby structures into consideration
when planning the venting system location. Certain
external structures could create air turbulence around
the vent termination leading to downdrafts and similar
venting problems. In windy and hill locations, roof
venting may improve operations. Maximum venting
length is based on 30 mph winds, areas where
higher gusts are dominant it is suggest to shorten the
horizontal vent length.
The vent and combustion air intake shall be installed so that both are located in the same wind pressure zone.
DO NOT CONNECT FURNACE TO A CHIMNEY OR FLUE SERVING OTHER APPLIANCES OR A
9.1

VENT TERMINATION

Horizontal vents should pass through
the exterior wall. Figure 8 shows
a standard horizontal vent detail.
Terminate the vent approximately 8" or
more from the wall.
Exterior vent pipe greater than 24"
should be insulated with ½" insulation
to prevent moisture from freezing within
the pipe and accumulating.
Size the exhaust pipe as specifi ed in
Table 4 - Direct and Non-Direct Vent
Lengths. This table lists the maximum
allowable length of pipe with respect to
the number of 90° elbows used. For the
purposes of this calculation, one 90°
elbow is equivalent to two 45° elbows.
Avoid locating the terminal in locations
where dripping condensate may cause
problems such as sidewalks, patios,
above planters, near windows where
exhaust gases may cause fogging, etc.
Avoid locating the termination too close
to shrubs and other vegetation. The
condensate may stunt or kill them.
FIGURE 8 - STANDARD (STRAIGHT) HORIZONTAL
WARNING
!
SOLID FUEL BURNING APPLIANCE.
TABLE 4 - DIRECT AND NON-DIRECT VENT LENGTHS
Maximum Allowable Length Of Exhaust Or Intake. Minimum Vent Length 15 ft.
or equivalent.
INPUT PIPE
K/Btu/hr SIZE
0
1½ 60
45
2 75
1½ 60
60 2 75
3 100
2 50
80
3 100
2 50
100
3 100
120 3 100
NOTE
When 1½" or 3" pipe is used, exit the cabinet with 2" pipe. Reduce or
increase immediately after exiting the cabinet on both intake and exhaust.
VENT DETAIL
!
NUMBER OF 90° ELBOWS
1 2 3 4 5 6
55 50 45 40 35 30
70 65 60 55 50 45
55 50 45 40 35 30
70 65 60 55 50 45
95 90 85 80 75 70
45 40 35 30 25 20
95 90 85 80 75 70
45 40 35 30 25 20
95 90 85 80 75 70
95 90 85 80 75 70
21
NOTES
1. Count concentric vent
fi tting as straight pipe.
2. Use medium or long
sweep elbows where
possible.
3. One 90° elbow is
equivalent to two 45°
elbows.
4. For direct vent, the
listed lengths are
allowed for each vent
(intake and exhaust).
5. For non-direct vent,
the listed lengths are al-
lowed for exhaust. The
intake should have a
1½" or 2" snorkel intake
fi tting. (Figure 7)
W415-0919 / 10.12.10