John Wood Noritz Condensing - N-0841MC - Manuel (Page 50)

50
Vertical Vent Termination
• Terminate at least 1.8m (6') from
the combustion air intake of any
appliance, and 0.9m (3') from any
other building opening, gas utility
meter, service regulator etc.
• Enclose exterior vent systems
below the roof line to limit conden-
sation and protect against me-
chanical failure.
• When the vent penetrates a floor
or ceiling and is not
running in a fire rated shaft, a
firestop and support is required.
• Terminate the vent system at least
0.6m (2') above, but not more than
1.8m (6') above the roof line, or
according to the vent pipe
manufacturer's instructions.
• Provide vertical support every
3.6m (12') or as required by the
vent pipe manufacturer's instructions.
• Slope the horizontal vent 1/4"
downwards for every 300mm (12").
• Do not vent straight upwards.
Always have a horizontal section of
venting.
• Install a condensation drain in the
horizontal section of the venting.
Appliance
Adapter
Firestop
Firestop/
Support
Roof
Flashing
RainCap
Exhaust
Intake Air
Hanger
Strap Elbow
Condensation
Drain (Install
According to
Local Codes)
0.3 - 0.6m
(1-2')
1.8m (6')
0.6m (2')
Min.
* Adapter not required when
using Noritz N-Vent.
Roof
Jack
Storm
Collar
**0.3m (1') Min. -
0.9m (3') Max.
** 0.3m (1') minimum recommended,
but not required. Avoid installing
elbow directly on flue.
(Combustible material)
Intake pipe
External wall,
combustible material
• Inspection openings are suggested for the vent intake and exhaust
pipes if they are installed in an enclosure. These openings should
be near the entrance and exit of the vent into the enclosure.
• These openings should be 450mm x 450mm (18" x 18").
Suggested inspection openings
450mm x 450mm (18" x 18")
When the intake/exhaust pipes pass through an enclosed space:
Ceiling
Sloping down toward vent terminal Exhaust pipe