Noritz NR111-SV Manuel D'installation page 44

Vertical Vent Termination
Intake Air
Elbow
**0.3m (1') Min. -
0.9m (3') Max.
When the intake/exhaust pipes pass through an enclosed space:
Intake pipe
44
1.8m (6')
Exhaust
0.3 - 0.6m
RainCap
(1-2')
0.6m (2')
Storm
Min.
Collar
Flashing
Roof
Jack
Firestop/
Support
Firestop
Hanger
Strap
Condensation
Drain (Install
According to
Local Codes)
Appliance
Adapter*
* Adapter not required when
using Noritz N-Vent.
** 0.3m (1') minimum recommended,
but not required. Avoid installing
elbow directly on flue.
Exhaust pipe
(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
combustion air intake of any appliance,
Roof
and 0.9m (3') from any other building
opening, gas utility meter, service regula-
tor 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 recommended
to prevent debris from falling into the water
heater.
• Install a condensation drain in the horizon-
tal section of the venting.
• Slope the horizontal section 1/4" for every
300mm (12") toward the drain tee.
Sloping down toward vent terminal
External wall,
combustible material