FMI PFS DVF42NH-HA - Manual (Page 13)

www.fmiproducts.com 125078-01B 13
venting inStALLAtiOn
Continued
Figure 13 - Typical Horizontal
Termination Cap Mounting with
Additional Siding Standoff Installed
Siding
Standoff
Screws
High Wind
Termination
Apply
Mastic to
Outside
Edge of
Standoff
Exterior Wall with Vinyl Siding
11 1 /
2
" x 11 1 /
2
"
Framed Opening
Maintain 1"
Minimum Air
Space Around
Outer Pipe When
Penetrating a Wall
Minimum
Pipe
Overlap
1 1 /
4
Wall
Firestop
Direct
Vent
Pipe
Horizontal Termination Configurations
Figure 14 shows a configuration for venting
with horizontal termination with a chart of
critical minimum and maximum dimensions
which MUST be met.
NOTICE: Do not seal termination
cap to vent pipe. Cap must be
removable for vent inspection
and maintenance.
WARNING: Never run vent
downward as this may cause
excessive temperatures which
could cause a fire. Operation of
improperly installed and main-
tained venting system could
result in serious injury, property
damage or loss of life.
GROUND FLOOR INSTALLATION
Recommended Applications:
• Through the wall using round or square
termination
• NOT FOR CORNER INSTALLATION
Figure 14 - Horizontal Termination Using
One 90° Elbow
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, con-
sider an offset (see Figure 15, page 14)
to avoid cutting load bearing members.
Note: Pay special attention to these instal-
lation 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.
Wall
Firestop
H
90° Elbow
V + 90· Elbow
Horizontal High
Wind Square
Termination
64" Min. (42")
61" Min. (36")
1' Pipe Min On
Horizontal Run
(V) Vertical
Minimum
Required
Vertical Pipe
(H) Horizontal
Maximum
21" 1 ft. 3 ft.
33" 2 ft. 7 ft.
45" 3 ft. 11 ft.
57" 4 ft. 20 ft.
V + H = 40 feet maximum
H = 20 feet maximum
1 ft. Min
Before
Elbow