11
FLASHING and RAIN COLLAR (FL and RC)
Both the Flashing and the Rain Collar are designed to fit the
outside of the Model eVent Series Venting System. They are
constructed of galvanized steel and should be protected
from corrosion by cleaning and painting. The Flashing is
non‐ventilated and for non‐combustible and combustible
flat roofs. Flashings of a special pitch are available upon
request. The Flashing should be protected from lateral
movement of the stack by use of the Full Ring (FR) or the
Floor/Roof Guide (FRG). The Rain Collar is secured around
the pipe immediately above the flashing and should be
sealed with a silicone sealant.
Figure 31 –Roof Penetrations
If the height above the roof line is less than that specified on
page 13, no guying or bracing is required. However, an
Insulated Thimble (IT), Floor/Roof Guide (FRG) or Full Ring
(FR) at the roof line is necessary to protect the Flashing (FL)
from side loads caused by wind. For heights above the roof
line greater than that shown on page 13, the vent must be
guyed or braced. Guying or bracing is accomplished by use
of the Guy Section (GS) Full Ring (FR) or Wall Guide (WG).
Guy wires or braces are to be attached to the horizontal
flanges of the Guy Section. While 3 guys are usually
sufficient, it is recommended that 4 equally spaced wires at
an angle of 45° from the vertical be utilized. The cables and
guys must be slightly loose to allow for the thermal
expansion. Rigid bracing requires two braces with not less
than 60° angle between them. The braces must be attached
to a Guy Section (GS) or Full Ring (FR).
See page 12 for further instructions.
TOP SECTION (TS)
The Top Section is installed using the same procedure as a Rain
Cap (CC).
Figure 32 – Top Section
EXIT CONE (EXC)
The Exit Cone is installed using the same procedure as the Rain
Cap (CC).
Figure 33 – Exit Cone
HORIZONTAL TERMINATION (HT)
A horizontal termination is used for sidewall termination when
clearance to combustibles is not an issue such as through a
concrete wall. The Horizontal Termination includes a bird
screen which covers the opening to keep birds and rodents
from entering the system.
Figure 34 – Horizontal Termination
END CAP (EC)
The end cap is used to cap off a tee and to allow a means to
enter the system for inspection and cleaning. The end cap is
installed by connecting the inner cone to the adjacent pipe
section with an inner band and sealant. The outer cover piece is
then fitted over the outer shell and bolted into place with (2)
¼” x 1 ½” stainless steel bolts. Whenever the end cap is
removed for inspection purposes the flanges must be cleaned
and resealed when reinstalling the part.