Venting Guidelines - Napoleon WPV-N Série Instructions D'installation Et D'opération

9.0 VENTING GUIDELINES

FAILURE TO FOLLOW ALL VENTING GUIDELINES MAY RESULT IN ERRATIC FURNACE
OPERATION, FREEZE-UP OF THE EXHAUST AIR PIPING, OR SOOTING OF THE FURNACE.
READ AND FOLLOW ALL INSTRUCTIONS IN THIS SECTION. FAILURE TO PROPERLY VENT THIS
FURNACE CAN CAUSE CARBON MONOXIDE POISONING OR AN EXPLOSION OR FIRE RESULTING
IN PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
NOTE
• Combustion air intake and exhaust termination should be inspected periodically to ensure they are clear
of obstructions. i.e. vegetation, debris, snow, etc.
• Accumulation of snow around the combustion air intake and exhaust termination may have negative
effects on appliance operation and/or performance. Snow accumulation should be considered
when locating combustion air intake and exhaust terminations.
IMPORTANT
:
CLEAN AND DE-BURR ALL PIPE CUTS (INCLUDING UNCUT VENT LENGTHS). THE
•
SHAVINGS MUST NOT BE ALLOWED TO BLOCK THE EXHAUST, COMBUSTION AIR INLET
OR CONDENSATE DRAIN LINES.
• IF THE PIPE AND FITTINGS ARE TO BE OTHER THAN PVC, USE THE PROPER CLEANER,
PRIMER AND CEMENT FOR THE DISSIMILAR MATERIALS.
• THE EXHAUST VENT MUST BE SUPPORTED APPROPRIATELY PRIOR TO IT BEING
FITTED TO THE EXHAUSTER. UNDER NO CIRCUMSTANCES SHALL THE EXHAUSTER
BEAR ANY WEIGHT OF THE VENTING SYSTEM.
• Venting may be vertical or horizontal.
• Minimum vent length - 15 total equivalent feet (4.6m). (See Venting Table)
• Horizontal piping must slope back towards the furnace at a minimum rate of 1/4" to the foot (18mm per
meter), so that condensate drains towards the furnace.
• Horizontal runs must be supported at least every 5 feet (1.524m). Horizontal sections must not dip or sag.
• All vent runs through unconditioned space where freezing might occur should be insulated with "arm-a-fl ex", "rub-
a-tex" or equivalent as long as there is no heat tape applied to the vent pipe. For horizontal runs where water may
collect, wrap the vent pipe with self regulating 3 or 5 watt heat tape. The heat tape must be CSA, UL, or ULC listed
and installed per the manufacturer's instructions. This includes travel through unconditioned attic space.
• DO NOT COMMON VENT WITH ANY OTHER APPLIANCE.
• If venting vertically, do not vent up a chimney serving another appliance or install in a chase with a metal or
high temperature plastic pipe from another gas or fuel burning appliance unless the required clearances to
combustibles can be maintained between the furnace venting system and other pipes.
It is recommended that an offset is created (2 x 45°s) in the vertical exhaust vent piping to reduce the risk of
fl ooding the exhauster with excessive vent condensate run down.
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.
FIGURE 8A - STANDARD (STRAIGHT)
CAUTION
!
WARNING
!
HORIZONTAL VENT DETAIL
3"
(76mm)
MIN.
VERTICAL TEE
TERMINATION
12"
(305mm)
MIN.
GRADE
!
!
H3.12
FIGURE 8B - STANDARD (STRAIGHT)
HORIZONTAL VENT DETAIL
3"
(76mm)
MIN.
EXHAUST
INTAKE
12"
(305mm)
MIN.
GRADE
21
IOM
W415-2308 / B / 11.04.19