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126721-01A
14
VENTING INSTALLATION
Continued
Figure 17 - Offset with Wall Strap and 45°
Elbows
45° Elbow
Wall Strap
Roof Flashing
Ceiling Firestop
Vertical Termination Installation
Note:
Vertical restrictor
must be installed in
all vertical installations.
1. Determine route your vertical venting
will take. If ceiling joists, roof rafters or
other framing will obstruct venting system,
consider an offset (see Figure 17) to avoid
cutting load bearing members.
Note: Pay
special attention to these installation
instructions for required clearances (air
space) to combustibles when passing
through ceilings, walls, roofs, enclosures,
attic rafters, etc. Do not pack air spaces
with insulation. Also note maximum
vertical rise of venting system and any
maximum horizontal offset limitations.
2. Set fireplace in desired location. Drop a
plumb line down from ceiling to position
of fireplace exit flue. Mark center point
where vent will penetrate ceiling. Drill a
small locating hole at this point.
3. Drop a plumb line from inside of roof to
locating hole in ceiling. Mark center point
where vent will penetrate roof. Drill a small
locating hole at this point.
Figure 16 - Horizontal Termination Using Two 90° Elbows
Venting with Two 90° Elbows
Vertical (V)
Horizontal (H
1
) +
Horizontal (H
2
)
6' min.
8' max.
7' min.
10' max.
8' min.
15' max.
20' max.
20' max.
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