NORITZ AMERICA CORPORATION NCC199-SV Manuel D'installation page 14

Horizontal Vent Termination- PVC/CPVC Materials Only
PVC/CPVC
Coupling
PVC/CPVC
Adapter*
Pipe Material
No. of Elbows
3
2
1
***Not including the termination.
Vertical Vent Termination- PVC/CPVC Materials Only
**0.3m (1')
Minimum
14
Hanger
Straps
Slope vent
Upwards
**0.3m (1')
Minimum
* Not supplied with water
heater, order separately.
**0.3m (1') minimum
recommended, but not required.
PVC or CPVC
Max. Straight Vent Length***
100mm (4") Pipe 75mm (3") Pipe
4.6m (15') 0.9m (3')
8.2m (27') 3m (10')
12.0m (39') 5.1m (17')
Storm
Collar
Roof
Flashing
Firestop/Support
Support
Firestop
Hanger
Strap
Slope vent
Upwards
PVC/CPVC
Coupling
PVC/CPVC
Adapter*
Not supplied with water
*
heater, order separately.
**0.3m (1') minimum
recommended, but not required.
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
any other building opening, gas utility
Insert Bird
meter, service regulator etc.
Screen* in
Each End
Terminate at least 0.9m (3') above any
of Tee
forced air inlet within 3m (10'), 1.2m (4')
•
below, 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.
•
A tee or 45° elbow may be used for the
termination.
Slope the horizontal vent 1/4" upwards for
•
every 300mm (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 equipment. Please refer to Technical
Bulletin TB 010606 for full installation
instructions.
Insert Bird
Screen* in
• Terminate at least from the combustion air
End of 45°
intake of any appliance, and 0.9m (3') from
Elbow
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 0.9m (3') 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
300mm (12") toward the termination to
drain condensate.