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F O R S A F E A N D P R O P E R O P E R A T I O N O F T H E F I R E P L A C E F O L L O W T H E V E N T I N G I N S T R U C T I O N E X A C T L Y .
D E V I A T I O N F R O M T H E M I N I M U M V E R T I C A L V E N T L E N G T H C A N C R E A T E D I F F I C U L T Y I N B U R N E R S T A R T - U P A N D / O R C A R B O N I N G .
IF VERTICAL RISES GREATER THAN 57 INCHES ARE NECESSARY, THE INCREASED RISE MUST BE DEDUCTED FROM THE
H O R I Z O N T A L R U N .
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 10 feet for each 90° elbow or 5 feet for each 45° elbow. (DO NOT
INCLUDE THE FIRST ELBOW DIRECTLY OFF THE UNIT.)
f i r e - p a r t s . c o m
FIGURE 4
SPECIAL INSTALLATION EXAMPLE
A through the roof installation requires a total 5 foot rise. FIGURE 5. The location of the fireplace dictates a horizontal run
of 5 feet. What is the required vertical rise to the centre of the initial 90° elbow?
The total run is:
5 ft. (through the roof vertical rise)
10 ft. (90° elbow)
5 ft. (horizontal run)
20 ft. (total run)
Using the chart, will determine that a 57 inch minimum vertical rise immediately
off the unit is required for satisfactory venting conditions.
A L T H O U G H T H E I M M E D I A T E V E R T I C A L R U N M A Y B E G R E A T E R T H A N 5 7 I N C H E S , T H E
MAXIMUM COMBINATION OF HORIZONTAL AND VERTICAL RUNS, BEYOND THE 57
INCHES, MUST NOT EXCEED 20 FEET.
Only the following Napoleon Vent Kits, used in combination with each other can be
used:
GD201, GD222, GD110, GD111 or GD112 (Periscope, Wall or Roof Terminals)
GD220 (5ft vent kit) or/and GD330 (10ft vent kits)
On all horizontal runs, when determining air terminal 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 require different clearances.
Do not allow the inside liner to bunch up on horizontal or vertical runs and elbows. Keep it pulled tight. A 1¼" air gap all
WS-415-53 / 04.08.99
around between the inner liner and outer liner is required for safe operation. Use a firestop when penetrating interior
walls, floor or ceiling.
REQUIRED VERTICAL RISE
FROM FIREPLACE TO FIRST
ELBOW IN INCHES
and
CALCULATED HORIZONTAL VENT RUN IN FEET
FIGURE 5
FIGURES 3a - d
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