NORITZ AMERICA CORPORATION NCC199-SV Manuel D'installation page 15

Horizontal Vent Termination- Stainless Steel Materials Only
Elbow
Slope vent
Upwards
** 0.3m (1') Min.
Appliance
Adapter*
* 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.
Vertical Vent Termination- Stainless Steel Materials Only
Elbow
Slope vent
Upwards
**0.3m (1') Min.
Appliance
Adapter*
* Adapter not required when
using Noritz N-Vent stainless
steel vent pipe.
** 0.3m (1') minimum recommended,
Hanger
Straps
Wall
Thimble
Rain
Cap
Storm
Collar
Roof
Flashing
Roof
Jack
Firestop/
Support
Firestop
Hanger
Strap
but not required. Avoid installing
elbow directly on flue.
• Terminate at least 300mm (12") above
grade or above snow line.
• Terminate at least 2.1m (7') above a public
walkway, 1.8m (6') from the combustion air
intake of any appliance, and 0.9m (3') from
Termination
any other building opening, gas utility meter,
service regulator etc.
• Terminate at least 0.9m (3') above any
forced air inlet within 3m (10'), 1.2m (4') be-
low, 1.2m (4') horizontally from or 0.3m (1')
above any door, window, or gravity air inlet
into any building per National Fuel Gas Code
ANSI Z223.1/NFPA 54.
• Slope the horizontal vent 1/4" downwards
for every 300m (12") toward the termination.
• Use a condensation drain if necessary.
• In the Commonwealth of Massachusetts a
carbon monoxide detector is required for all
side wall horizontally vented gas fuel equip-
ment. Please refer to Technical Bulletin TB
010606 for full installation instructions.
• 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 recommended
to prevent debris from falling into the water
heater.
• When using a horizontal section, slope the
horizontal vent 1/4" upwards for every 300m
(12") toward the termination.
• Use a condensation drain if necessary.
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