Vent Pipe Installation - Noritz ecoTOUGH NRC98-DV Installation Manual

Vent Pipe Installation

Horizontal Vent Termination- PVC/CPVC Materials Only
Insert Bird
Screen* in
End of Each
90 Elbow
Hanger
Intake
Exhaust
**1'
Minimum
* Not supplied with water heater,
order separately.
**1' mini mum recommended,
but not required.
Vertical Vent Termination- PVC/CPVC Materials Only
3 ft. Min.
Insert Bird
Screen* in
End of
90 Elbow
12" over maximum
snow level
Roof
Storm
or 24", whichever
Flashing
Collar
is greater.
Intake
Exhaust
Firestop/Support
Support
Firestop
Hanger
Slope
Upwards
**1'
Minimum
* Not supplied with water heater,
order separately.
**1' minimum recommended,
but not required.
3 ft. Min.
Straps
Slope vent
Upwards
Insert Bird Screen*
in End of 45 Elbow
12" over maximum
snow level
Roof
Storm
or 24", whichever
Flashing
Collar
is greater.
Firestop
Strap
vent
•
As illustrated on the left, make sure to keep a
distance of 3' (0.9m) or wider between the intake and
exhaust when installing the vent piping.
• The PVT-HL termination may be used in place of elbows
as the horizontal vent terminations. It is not necessary to
use bird screens with the PVT-HL termination.
• Terminate at least 12" (300mm) above grade or above
snow line.
• Terminate at least 7' (2.1m) above a public walkway,
6' (1.8m) from the combustion air intake of any
appliance, and 3' (0.9m) from any other building
opening, gas utility meter, service regulator etc.
Terminate at least 3' (0.9m) above any forced air inlet
•
within 10' (3m) , 1' (0.3m) below, 1' (0.3m) horizontally
from or 1' (0.3m) 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
12" (300mm) 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 in structions.
• As illustrated on the left, make sure to keep a distance
of 3' (0.9m) or wider between the intake and exhaust
when installing the vent piping.
•
Terminate at least 6' (1.8m) from the combustion air
intake of any appliance, and 3' (0.9m) 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
8' (2.4m) from a vertical wall or similar obstruction,
terminate above the roof at least 2' (0.6m), but not
more than 6' (1.87m), in accordance with the National
Fuel Gas Code ANSI Z223.1/NFPA 54.
•
Provide vertical support every 3' (0.9m) 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 12" (300mm) toward the
termination to drain condensate.
15