Special Installation Example; Offset Installation Example - Napoleon GDS 50 - N Installation And Operation Instruction Manual

8
Use the chart on this page to calculate horizontal runs for
vertical rises between 29 and 57 inches. FIGURE 8.
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.)
REQUIRED
V E R T I C A L
RISE FROM
FIREPLACE
TO FIRST
ELBOW IN
INCHES
CALCULATED HORIZONTAL VENT RUN IN FEET

SPECIAL INSTALLATION EXAMPLE

When a horizontal run is introduced, even though the termi-
nal may be vertical, the installation must be considered
HORIZONTAL.
A through the roof installation requires a total 5 foot rise.
FIGURE 9. 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
RUN MAY BE GREATER THAN 57
I N C H E S , T H E M A X I M U M C O M B I N A -
T I O N O F H O R I Z O N T A L A N D V E R T I C A L
RUNS, BEYOND THE 57 INCHES,
MUST NOT EXCEED 20 FEET.
WS-415-098 / 04.11.00
FIGURE 8
FIGURE 9

OFFSET INSTALLATION EXAMPLE

FIGURE 11
FIGURE 10
If a first run of 72 inches is
required, using the "First Vent
Run" on the chart shows that
a maximum second run of
48 inches is allowable.
IF NECESSARY, THE
FIRST RUN AND THE SEC-
OND RUN MAY BE RE-
VERSED.