Instructions / Assembly

19
Horizontal Vent Riser Terminal Installation
Read these instructions thoroughly and
make sure you understand all steps and
procedures before proceeding with the
installation.
Determine the locations for the vent
terminal then make a hole through the
exterior wall to accommodate the vent
pipe.
• Maintain a minimum distance from the
vent terminal of not less than 1 ft. (30.5
cm) above grade or average snowfall
whichever is greater.
Insert length of the vent pipe through the
wall as shown.
• Allow sufficient length of pipe to
extend beyond the exterior wall of the
building for attachment of the vent riser
assemblies as shown.
• Place the supplied mesh metal screen
inside the terminal fitting.
NOTICE: For cold climates, the screen
may be removed.
Connect the vent riser assembly to the
vent pipe, which extends out of the
building.
• Ensure that the back of the 90° elbow is
flush with the outside wall surface and
that the vent termination of the vent riser
is parallel with the outside wall.
IMPORTANT: Remember to include
the additional 90° elbows and vertical
height of vent pipes of the vent riser when
calculating the maximum equivalent vent
system length. The maximum equivalent,
vent system length must be as specified in
Table 1.
• The vent termination is not included in
the equivalency calculations.
Complete the installation of the remainder
of the vent system and attach it to the vent
connector fitting on the water heater's
blower assembly.
• Horizontal sections of the vent system
must slope downward toward the
water heaters a minimum of 1/8 in.
per foot (10 mm per m).
DO NOT use unequal diameter of pipe
and fittings for the vent system except as
defined previously.
Support vertical and horizontal lengths of
the vent system as previously mentioned.
Terminal assembly to be parallel to wall.
Front View
*
*
Side View
Termination Opening
12 in. (30.5 cm) min. above grade or
anticipated snow level
Short piece of pipe
Exhaust Vent
Terminal
* Clearance is equal
and parallel to wall
4 in (10 cm) for 2 in (5.1 cm) pipe
5.5 in (14 cm) for 3 in (7.6 cm) pipe