21 TRV Fireplace - Lopi

30 Installation (for qualified installers only)
Rear Vent Configuration with Vertical Termination
• The termination must fall
within the shaded area
shown in the chart. Use the
indicated restrictor and
diffuser positions.
• Up to four elbows (45° or
90°) may be used.
• Only one horizontal elbow
may be used (see
illustration at the bottom of
the page).
• Use 8" diameter vent.
This is considered a horizontal
elbow (it does not matter
whether it turns right or left).
It may be a 90° or 45° elbow.
40' (max)
Restrictor Position # 3
Diffuser Position # 1 (stock)
NOTE:
Two 45° elbows
may be used.
NOTE:
One 45° or 90° elbow may
be used between horizontal
sections. Horizontal length
is caculated by adding each
horizontal run together.
NOTE:
Horizontal sections require a
1/4" rise every 12" of travel.
H2
H1
NOTE:
Restrictor positions are
based upon lab tests.
The ideal restrictor
position may vary
slightly, especially when
the termination is near a
demarkation line.
Restrictor Position # 2
Diffuser Position # 1 (stock)
Restrictor Position # 1 (stock)
Diffuser Position # 1 (stock)
6' (min) 6' (min)
5 feet
5 feet
© Travis Industries 4080207 100-01185_000
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Horizontal length is calculated by adding
both lengths of horizontal run
(Horizontal Length = H1 + H2).
This is considered a
vertical elbow
14' (max)
14' (max)
40' (max)
35 feet
30 feet
25 feet
20 feet
15 feet
10 feet
0 feet