NORITZ AMERICA CORPORATION NCC199-SV Manuel D'installation page 53

Vertical Vent Termination- Stainless Steel Materials Only
Intake Air
Elbow
**0.3m (1') Min.
Appliance
Adapter
When the intake/exhaust pipes pass through an enclosed space:
Intake pipe Exhaust pipe
1.8m (6')
Exhaust
0.3 - 0.6m
RainCap
(1-2')
0.6m (2')
Storm
Min.
Collar
Roof
Flashing
Roof
Jack
Firestop/
Support
Firestop
Hanger
Strap
Slope vent
Upwards
*
* Adapter not required when
using Noritz N-Vent stainless
steel vent pipe.
** 0.3m (1') minimum recommended,
but not required. Avoid installing
elbow directly on flue.
(Combustible material)
Ceiling
Suggested inspection openings
450mm x 450mm (18" x 18")
• 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").
• Terminate at least 1.8m (6') from the com-
bustion 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 condensation and protect
against mechanical failure.
• When the vent penetrates a floor or
ceiling and is not running in a fire rated
shaft, a firestop and support is required.
• When the vent termination is located not
less than 2.4m (8') from a vertical wall or
similar obstruction, terminate above the
roof at least 0.6m (2'), but not more than
1.8m (6'), in accordance with the National
Fuel Gas Code ANSI Z223.1/NFPA 54.
• Provide vertical support every 3.6m (12')
or as required by the vent pipe
manufacturer's instructions.
• A short horizontal section is recom-
mended to prevent debris from falling into
the water heater.
• When using a horizontal section, slope the
horizontal vent 1/4" upwards for every
300mm (12") toward the termination.
• Install a condensation drain if necessary.
Sloping down toward vent terminal
External wall,
combustible material
53