Table of Contents
Advertisement
VERtICAL tERMInAtIOn InstALLAtIOn
1. Determine the location for the termination(s).
nOtE: The standard vent and intake air terminations are of
different design, see Figure 18.
2. If installing only the vent (exhaust) piping in a Power Vent
configuration vertically through the roof; ensure that all
exterior vertical clearance requirements shown in Figure 19
and Figure 20 on page 26 are being maintained. These
clearances and those cited by local and national codes must
be maintained.
nOtE: on flat roof installations the vent termination must be
a minimum of 24 inches (60 cm) above any parapet, vertical
wall or structure within 10 feet (3 m) horizontally. See Figure
20 on page 26.
3. If installing both intake air and vent piping in a Direct Vent
configuration vertically through the roof; ensure that all
exterior vertical clearance requirements shown in Figure 19
and Figure 20 on page 26 are being maintained. These
clearances and those cited by local and national codes must
be maintained.
nOtE: on flat roof installations the intake air and the vent
terminations must be a minimum of 24 inches (60 cm) above
any parapet, vertical wall or structure within 10 feet (3 m)
horizontally. See Figure 20 on page 26.
4. If installing only vent piping in a Power Vent configuration
vertically through the roof the following instructions must be
followed:
The vent termination must be oriented facing downward as
shown in Figure 19 and Figure 20 on page 26.
The bottom edge of the vent termination must be a minimum
of 12 inches (30 cm), 18 inches (45 cm) in Canada, above
the average or expected snow level as shown in Figure 19
on page 26.
5. If installing both intake air and vent piping in a Direct Vent
configuration vertically through the roof the following
instructions must be followed:
The intake air and vent pipes must penetrate the same side
of the roof as shown in Figure 21 on page 26.
The intake air and vent terminations must be oriented facing
downward and in the same direction as shown in Figure 21
on page 26.
INTAKE AIR TERMINATION
45° ELBOW WITH
DOME SHAPED DEBRIS
SCREEN
STANDARD FACTORY SUPPLIED TERMINATIONS
The intake air and vent terminations must have a minimum
separation of 24" (61 cm) measured on center line as shown
in Figure 21 on page 26. In colder climates this separation
should be increased to at least 48 inches (122 cm).
The bottom edge of the intake air and vent terminations
must be a minimum of 12 inches (30 cm), 18 inches (45 cm)
in Canada, above the average or expected snow level as
shown in Figure 19 and Figure 21 on page 26.
6. When the intake air and/or vent piping from multiple
water heaters will terminate in the same location the vent
terminations can be grouped together in close proximity 0
inches/touching. Intake air terminations can also be grouped
together in close proximity 0 inches/touching.
The distance between the closest vent and intake air
terminations must be a minimum of 24 inches (61 cm) as
shown in Figure 21 on page 26. In colder climates this
separation should be increased to at least 48 inches (122
cm).
7. Cut a 4 inch (10 cm) diameter hole for 3 inch pipe or 5 inch
(13 cm) diameter hole for 4 inch pipe where the pipe(s) will
pass through the roof.
nOtE: beware of concealed wiring and piping when cutting
through the roof.
8. Suspend the pipe(s) through center of hole using field
supplied metal strapping or equivalent support materials as
shown in Figure 19 on page 26.
9. Slide a roof boot or equivalent flashing over the pipe and
secure roof boot or equivalent flashing to roof and seal
around the flashing as shown in Figure 19, Figure 20 and
Figure 21 on page 26.
10. Install the factory supplied intake air and/or vent termination(s)
using field supplied pipe and one field supplied 90° elbow as
shown in Figure 19 on page 26. The short section of pipe
that connects between the field supplied 90° elbow and the
factory supplied termination must not be excessive in length.
The exposed portion of this pipe shall be no more than 2
inches (5 cm), see Figure 19 on page 26.
11. return to Power Vent Installation on page 23 or Direct Vent
Installation on page 23 to complete the installation of the intake
air and/or vent piping between the termination(s) and the
water heater.
figure 18
25
VENT TERMINATION
45° ELBOW WITH
RECESSED DEBRIS
SCREEN
Advertisement
Table of Contents
