User guide
18
Sections. Continue to add Pipe
Sections until you are above
the rooine.
Step 8. Follow Steps 7 through
10 (page 15 & 16) of the Vertical
Installation Instructions.
Step 9. Install the black Trim Collar
around the outside of the Cathedral
Ceiling Support Box. The two pieces
of the Trim Collar slide over one
another to allow for easy adjustment
around the Support Box. Using the six
(6) screws provided, secure the four
corners and the overlapping sections
of the Trim Collar to the underside of
ceiling. You may want to pre-drill the
holes for the overlapped sections for
ease of installation (Fig. 22).
Conduct an inspection of the venting
system annually. Recommended
areas to inspect are as follows:
. Check areas of the Venting System
which are exposed to the elements
for corrosion. These will appear as
rust spots or streaks, and in extreme
cases, holes. These component
should immediately be replaced.
Remove the Vertical Termination
Cap and shine a ashlight down the
Vent. Remove any bird nests, or other
foreign material.
Check for evidences of excessive
condensation, such as water
droplets forming in the inner liner,
and subsequently dripping at joints.
Continuous condensate can cause
corrosion of caps, pipe, and ttings. It
may be caused by having excessive
lateral runs, too many elbows, and
exterior portions of the system being
exposed to cold weather.
. Inspect joints to verify that no
Pipe Sections or Fittings have been
disturbed or loosened. Also check
mechanical supports such as Wall
Straps or plumbers tape for rigidity.
All components are
labeled with the appropriate
identication information, and the UL
listing data, where applicable.
When installing DirectVent Pro on
appliances in Canada, a 2-piece Wall
Thimble is required in order to comply
with IR #41 (Fig. 23 and Fig. 24). Cut
and frame an opening in the wall in
accordance with the dimensions in
Table 1, page 8. Install galvanized
exterior Wall Thimble plate on exterior
of building and the other half of the
Wall Thimble on the interior side of
wall. Install Wall Thimble centered
through a square framed opening in
wall. Install a Wall Thimble Cover on
the wall to cover the inside portion of
the Wall Thimble. Be sure to maintain
all minimum clearances specied
by appliance manufacturer. When
installing DirectVent Pro vertically
through oors (Fig. 25) a Ceiling
Firestop is required at every oor/
ceiling level. Refer to appliance
manufacturer installation instructions
for complete installation procedure.