Noritz NRC111-SV Manuel D'installation page 14

Horizontal Vent Termination- PVC/CPVC Materials Only
**0.3m (1') Minimum
PVC/CPVC
Coupling
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
* 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
* 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 meter,
Insert Bird
service regulator etc.
Screen* in
Each End
• Terminate at least 0.9m (3') above any forced
of Tee
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.
• 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
End of 45
• Terminate at least from the combustion air
Elbow
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 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.