49
Vertical Vent Termination- PVC/CPVC Materials Only
•
•
•
•
•
•
•
•
•
Horizontal Vent Termination- PVC/CPVC Materials Only
•
•
•
•
•
•
•
Insert Bird
Screen* in
End of Each
90
°
Elbow
Hanger
Straps
**0.3m (1') minimum recommended,
but not required.
45
°
45
°
3 ft. Min.
3 ft. Min.
Firestop
Firestop
Firestop/Support
Roof
Flashing
Roof
Flashing
Hanger
Strap
**0.3m (1')
Minimum
**0.3m (1')
Minimum
Support
Slope
Slope vent
Upwards
Intake
Exhaust
vent
Upwards
Intake
Exhaust
Insert Bird Screen*
in End of 45
°
Elbow
12" over maximum
snow level
or 24", whichever
is greater.
12" over maximum
snow level
or 24", whichever
is greater.
Insert Bird
Screen* in
End of
90
°
Elbow
Storm
Collar
Storm
Collar
As illustrated on the left, make sure to keep a
distance of 0.9m (3') or wider between the intake
and exhaust when installing the vent piping.
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,
service regulator etc.
Terminate at least 0.9m (3') above any 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.
Slope the horizontal vent 1/4" upwnwards
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 in
structions.
As illustrated on the left, make sure to keep a
distance of 0.9m (3') or wider between the intake
and exhaust when installing the vent piping.
Terminate at least 1.8m (6') from the combustion
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.
Terminate the vent system at least 0.6m (2') above,
but not more than 1.8m (6') above the roof line, or
according to the vent pipe manufacturer's instructions.
Terminate the vent system at least 0.6m (2') above
any portion of a building located within 3m (10')
horizontally.
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.
**0.3m (1') minimum recommended,
but not required.
* Not supplied with water heater,
order separately.
PVC/CPVC
Coupling
PVC/CPVC
Coupling
* Not supplied with water heater,
order separately.
