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

F. Venting Guidelines for Horizontal Runs
Max horizontal Run,
Rear Vent (No Rise)
Max horizontal Run
Rear Vent with Vertical
rise
horizontal Run requires a non-combustible support
every 3 ft (914 mm), i.e., plumbing tape
REAR VENT
(WITH VERTICAL RISE)
C
L
C L
Figure 4.6
13 Heat & Glo • TIARAP-BK-IPI, TIARAP-BR-IPI, TIARAP-CES-IPI Installation Manual • 2344-980_R4 • 11/14
8 in. (203 mm)
See Figure 4.6.
8 ft (2.4 m) when vertical rise
is 8 ft (2.4 m)
Min of 2 ft vertical (610 mm)
must be used prior to any
horizontal run. See Figure
4.6.
2 FT.
MINIMUM
G. Vent Diagrams
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.