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6
For optimum performance, it is recommended
that all horizontal runs have a minimum ¼ inch
rise per foot.
Wolf Steel rigid and flexible venting systems must
not be combined. Wolf steel and Simpson Dura-
vent venting systems must not be combined.
Provide a means for visually checking the vent
connection to the fireplace after the fireplace is
installed.
Do not allow the inside liner to bunch up on hori-
zontal or vertical runs and elbows. Keep it pulled
tight. A 1¼" air gap between the inner and outer
liner all around is required for safe operation.
Vent lengths that pass through unheated spaces
(attics, garages, crawl space) should be wrapped
with a protective insulation sleeve to minimize
condensation.
Use a firestop when penetrating interior walls,
floor or ceiling.
In order to avoid the possibility of exposed insu-
lation or vapour barrier coming in contact with
the fireplace body, it is recommended that the
walls of the fireplace enclosure be 'finished', (i.e.
drywall/sheetrock) as would any other outside
wall of the home. This will ensure that clearance
to combustibles is maintained within the cavity.
For safe and proper operation of the fireplace
follow the venting instruction exactly.
Deviation from the minimum vertical vent length
can create difficulty in burner start-up and/or
carboning.
If vertical rises greater than 57 inches are nec-
essary, the increased rise must be deducted from
the horizontal run.
Use the chart on this page to calculate horizontal runs for
vertical rises between 12 and 57 inches. FIGURE 4.
When calculating maximum run lengths, include 5 feet for
each 90° elbow or 5 feet for each 45° elbow. (DO NOT
INCLUDE THE FIRST ELBOW DIRECTLY OFF THE UNIT.)
REQUIRED
VERTICAL
RISE FROM
FIREPLACE
TO FIRST
ELBOW IN
CALCULATED HORIZONTAL VENT RUN IN
W415-0272 / C / 05.08.03
SPECIAL INSTALLATION EXAMPLE
When a horizontal offset is required in a through-the-roof
installation, the following procedure for vent length calcu-
lations must be followed:
In an installation as shown in FIGURE 5
lengths A and C are known based on
room height and roof requirements.
Length C must never be less than 12
inches. Any 90° and 45° elbows must
be calculated as 5 feet of venting
each.
The allowable horizontal run can be
calculated using these parameters. In
this example, the total vertical height is
20 feet (length "A" is required to be 11
feet while length "C" needs to be 9 feet).
The maximum vertical length is 40 feet
and all runs and elbows must be sub-
tracted from this maximum vertical
length.
The maximum allowable horizontal run that "B" can be is:
40 ft. (maximum vertical run length)
-11 ft. (through the roof vertical rise "A")
-10 ft. (2 - 90° elbow)
- 9 ft. (vertical run "C")
10 ft. (maximum allowable horizontal length for "B")
The length of "B" must never be greater than the length
of "A" and "C" combined.
Only the following Napoleon Vent Kits, used in combina-
tion with each other can be used:
GD201, GD222, GD110, GD111 or GD112 (Periscope, Wall
GD220 (5ft vent kit) or/and GD330 (10ft vent kits)
On all horizontal runs, when determining air ter-
minal locations, check for appropriate rise per
foot requirements.
A terminal shall not terminate directly above a
sidewalk or paved driveway which is located
betweeen two single family dwellings and serves
both dwellings. Local codes or regulations may
FIGURE 4
require different clearances.
A
B
FIGURE 5
or Roof Terminals)
and
C
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