Connection To Furnace Non-Direct Vent - Napoleon WSX-EN Series Installation And Operating Instructions Manual

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FIGURE 6 - OUTDOOR AIR FOR COMBUSTION,
HORIZONTAL (CASE 4)
IOM
IOM
IMPORTANT:
THE OUTDOOR GRILLS MUST BE INSTALLED IN A LOCATION WHERE THEY WILL NOT BE
OBSTRUCTED IN ANY MANNER.
IMPORTANT:
IF GRILLS ARE USED ON THE OUTSIDE WALL, THEY MUST BE SIZED PROPERLY.
MOST SIDEWALL GRILLS HAVE ONLY 50% FREE AREA. IN THE CASE OF A UNIT WITH
100,000 BTU/HR INPUT, WHICH REQUIRES A PAIR OF 8" (203mm) ROUND PIPES TO
OBTAIN SUFFICIENT COMBUSTION AND VENTILATION AIR, THE DUCT COULD BE AN
EQUIVALENT RECTANGULAR DUCT; 8" X 7" (203mm X 178mm) FOR EXAMPLE. BASED
ON 50% FREE AREA FOR THE INLET GRILLS, THE ACTUAL GRILL SIZE WOULD HAVE
TO BE 14" X 8" (356mm X 203mm) OR ITS EQUIVALENT. A TRANSITION MAY BE USED TO
REDUCE TO THE SMALLER DUCT SIZE IF NECESSARY.

8.1.5 CONNECTION TO FURNACE NON-DIRECT VENT

IMPORTANT:
WHEN USING INDOOR AIR OR THE NON-DIRECT
VENT CONFIGURATION, THE COMBUSTION AIR
INLET TO THE FURNACE MUST BE PROTECTED
FROM BLOCKAGE. USE A DOUBLE ELBOW
ARRANGEMENT IF SUPPLYING COMBUSTION AIR
THROUGH THE TOP, OR A DOWNWARD POINTING
SINGLE ELBOW IF SUPPLYING COMBUSTION AIR
THROUGH THE SIDE. (FIGURE 7)
W415-2845 / B / 11.10.20
Combustion Air
Duct Terminates
12" (305mm)
above floor.
TABLE 3 - HORIZONTAL AIR
SUPPLY (CASE 4)
Input Free Area
K/Btu/hr Ea. Opening
40
30 in 2
(194cm )
2
60
40 in 2
80
(258cm 2 )
H13.4C
FIGURE 7 - NON-DIRECT
COMBUSTION AIR INLET
H13.5C
Round Pipe
Size
7 in
(178mm)
8 in
(203mm)
H12.9.6