Electrolux SBB800S-1 Installation Manual page 17

Vent Pipe Installation
Horizontal Vent Termination- PVC/CPVC Materials Only
Intake
Exhaust
**1'
Minimum
* Not supplied with water heater,
order separately.
**1' mini mum recommended,
but not required.
When choosing intake and exhaust terminations, you must use the
same type of elbow (i.e. both 90° elbows).
This will help with proper combustion by putting both terminations in
the same pressure zone.
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.
Storm
Collar
Intake
Exhaust
Firestop/Support
Support
Firestop
Hanger
Strap
Slope
Upwards
**1'
Minimum
* Not supplied with water heater,
order separately.
**1' minimum recommended,
but not required.
When choosing intake and exhaust terminations, you must use the
same type of elbow (i.e. both 90° elbows).
This will help with proper combustion by putting both terminations in
the same pressure zone.
Hanger Insert Bird Screen*
in End of 90 Elbow
Straps
Slope vent
Upwards
3" Min.
Insert Bird
Screen* in
End of
90 Elbow
12" over maximum
snow level
Roof
or 24", whichever
Flashing
is greater.
Firestop
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.
* If 3' (0.9m) distance between Intake and Exhaust cannot be ensured,
the installation can be carried out only in the installation method shown in page 17.
The TWHHORHOOD termination may be used in place of elbows as
the horizontal vent terminations. It is not necessary to use bird screens
with the TWHHORHOOD termination. See page 17 for more info.
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
instructions.
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 TWHVERTCAP termination may be used in place of
elbows as the vertical vent termination. It is not necessary
to use bird screens with the TWHVERTCAP termination.
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 oor or ceiling and is not
running in a re rated shaft, a restop 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.