Venting Guidelines For Horizontal Runs; Vent Diagrams - Heat & Glo TIARAI-BK-IPI Installation Manual

F. Venting Guidelines for Horizontal Runs
Max horizontal Run,
Rear Vent (No Rise)
Max horizontal Run
Max horizontal Run
Rear Vent with 45
o
Elbow (no rise)
Rear Vent with Vertical
rise
horizontal Run requires a 1/4 in. (6mm) rise for every
1 ft toward the termination.
horizontal Run requires a non-combustible support
every 3 ft (914 mm), i.e., plumbing tape
a vent run off the top of the appliance with more than
one 90º elbow or two 45º elbows must have a mini-
mum vertical of 2 feet.
C L
Figure 4.6
13 Heat & Glo • TIARAI-BK-IPI, TIARAI-BR-IPI, TIARAI-CES-IPI Installation Manual • 2342-980_R8 • 11/14
14 in. (356 mm)
Snorkel kit and derating
orifice must be used. See
Figure 4.6.
14 ft (4.3 m) when vertical rise
is 10 ft (3m)
14 in. (356 mm)
Snorkel kit and derating
orifice must be used. See
Figure 4.6.
Min of 2 ft vertical (610 mm)
must be used prior to any
horizontal run. derating ori-
fice must be used.
Snorkel Kit
G. Vent Diagrams
to replace the first 90º starter elbow with two 45º elbows,
refer to Figure 4.7. all other 90º elbows can be replaced
with two 45º elbows.
general Rules:
• SUBtRact 3 ft. from the total h measurement for each
90º elbow installed horizontally.
• SUBtRact 1 ft. from the total h measurement for each
45º elbow installed horizontally.
• a maximum of three 90º elbows (or six 45º elbows) may
be used in any vent configuration. Some elbows may be
installed horizontally. See specific vent diagrams.
• When penetrating a combustible wall, a wall shield firestop
must be installed.
• When penetrating a combustible ceiling, a ceiling firestop
must be installed.
top Vent—horizontal termination—two 45º elbows
Installation requirements to replace the first 90º elbow
with two 45º elbows:
Figure 4.7
4 ft min.
(1.22 m)