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ECHO
FIGURE 9 – WALL THIMBLE
INSTALLATION
To achieve the minimum vertical rise a 14" or 36"
snorkel may be used. Where the bottom of the
terminal may be blocked by snow etc ensure
provision is made for adequate drainage. For proper
venting, see Figure 6 and Figure 7.
When planning your installation, it will be
necessary to select the proper length of vent pipe
installations. For vertical installations, determine
the length of vent pipe required by measuring the
distance from the appliance flue outlet to the
ceiling, the ceiling thickness, the vertical rise in the
attic or second story, and allow for sufficient vent
height
above
the
applications, firestops are required at each floor
level. If an offset is needed in the attic, additional
pipe and elbows will be required. Venting terminals
shall not be recessed into a wall or siding.
Snorkel
For installations requiring a vertical rise on the
exterior of a building, a 14" or 36" tall Snorkel
Termination may be
Termination must be installed below grade (i.e.,
Wall Thimble
Detailed View
Note: When installing
termination on vinyl
siding, a vinyl siding
kit must be used.
roofline.
For
two-story
used.
If the Snorkel
FIGURE 10 – CEILING DETAIL
basement application), proper drainage must be
provided to prevent water from entering the Snorkel
Termination.
For straight out the back rear vent installations a
snorkel must be used. The maximum horizontal
straight out the back, pipe run is 18".
Vertical Installation
Always maintain a 1" clearance around the vent
pipe (vertical) and 2" clearance horizontal, when
passing through ceilings, walls, roofs, enclosures,
attic rafter or any combustible surfaces.
DO
NOT
PACK
INSULATION.
Refer to the vent chart with Figure 15 for maximum
allowable
vertical
installations.
When planning your installation determine if ceiling
joists, roof rafters or other framing will obstruct the
vent system. Use 45° elbows to navigate around any
obstacles. When passing through a flat ceiling
install a Box/Wall thimble. Cut a 10" square hole
and frame as shown in Figure 10 and Figure 11.
19
DIRECT VENT GAS HEATER
AIR
SPACES
and
horizontal
WITH
allowable
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