Horizontal Termination System - Lennox ELDV-45NE Installation Instructions Manual

HORIZONTAL (OUTSIDE WALL)
TERMINATION SYSTEM
Figures 26, and Figures 29 to 31 on pages 18
and 19 and their associated Horizontal Vent
Table illustrate the various horizontal venting
configurations that are possible for use with
these appliances. Secure Vent pipe applica-
tions are shown in these figures; Secure Flex
pipe may also be used. A Horizontal Vent Table
summarizes each system's minimum and maxi-
mum vertical and horizontal length values that
can be used to design and install the vent
components in a variety of applications.
Both of these horizontal vent systems terminate
through an outside wall. Building Codes limit or
prohibit terminating in specific areas. Refer to
Figure 8 on page 7 for location guidelines.
Secure Vent SV4.5 direct vent system compo-
nents are unitized concentric pipe compo-
nents featuring positive twist lock connection,
( refer to Figure 15 and 16 on page 12). All of
the appliances covered in this document are
fitted with collars having locking inclined chan-
nels. The dimpled end of the vent components
fit over the appliance collar to create the posi-
tive twist lock connection.
A. Plan the vent run -
Analyze the vent routing and determine the types
and quantities of
4-1/2" (114 mm), 10-1/2" (267 mm), 22-1/2" (572
mm), 34-1/2" (876 mm) and 46-1/2" (1181 mm)
net section lengths are available. Plan the vent
lengths so that a joint does not occur at the
intersection of ceiling or roof joists. Make allow-
ances for elbows as indicated in Figure 18 on
page 13 .
Maintain a minimum 1" (25 mm) clearance to
combustibles on the vertical sections. Clearances
for the horizontal runs are; 3" (76 mm) on top, 1"
(25 mm) on sides, and 1" (25 mm) at the bottom.
B. Frame exterior wall opening -
Locate the center of the vent outlet on the
exterior wall according to the dimensions
shown in Figure 9 on page 8.
Cut and/or frame an opening, 10-1/2" x 12-1/8"
(267 mm x 308mm) inside dimensions, about
this center.
C. Frame ceiling opening - If the vertical route
is to penetrate a ceiling, use plumb line to
locate the center above the appliance. Cut and/
or frame an opening, 10-1/2" x 10-1/2" (267
mm x 267 mm) inside dimensions, about this
center (refer to Figure 14 on page 11 ).
D. Attach vent components to appliance - To attach
a vent component to the appliance collar, align the
dimpled end over the collar, adjusting the radial
alignment until the four locking dimples are aligned
with the inlets of the four incline channels on the
collar ( refer to Figure 15 on page 12).
16
Figure 26
Push the vent component against the collar
until it fully engages, then twist the component
clockwise, running the dimples down and along
the incline channels until they seat at the end of
the channels. The unitized design of the Secure
Vent components will engage and seal both the
inner and outer pipe elements with the same
procedure. Sealant and securing screws are
not required.
sections required
Note: An elbow may not be directly attached
to the appliance collar.
E. Attach vent components to each other -
Other vent sections may be added to the previ-
ously installed section in accordance with the
requirements of the vent tables. To add another
vent component to a length of vent run, align the
dimpled end of the component over the inclined
channel end of the previously installed section,
adjusting the radial alignment until the four
locking dimples are aligned with the inlets of the
four incline channels of the previous section.
Push the vent component against the previous
section until it fully engages, then twist the
component clockwise running the dimples down
and along the incline channels until they seat at
the end of the channels.This seating position is
indicated by the alignment of the arrow and
dimple as shown in Figure 16 on page 12.
F. Install firestop/spacer at ceiling -
When using Secure Vent, use SV4.5VF firestop/
spacer at ceiling joists; when using Secure Flex,
use SF4.5VF firestop/spacer. If there is living
space above the ceiling level, the firestop/ spacer
must be installed on the bottom side of the
ceiling. If attic space is above the ceiling, the
firestop/ spacer must be installed on the top
side of the joist. Route the vent sections
through the framed opening and secure the
firestop/spacer with 8d nails or other appropri-
ate fasteners at each corner.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
TYPICAL HORIZONTAL VENT INSTALLATION
Support
Building
Brackets
Support
Framing
SV4.5E90
Elbow
Ceiling
Firestop/Spacer
Vertical
Rise
See Figure 17 on page 12 for
vertical vent section support.
Horizontal / Inclined Run
SV4.5L6/12/24/36/48
Vent Sections
Support Bracket Spacing
Every 5 ft (1.52 m)
Fireplace
Remember to maintain 1" (25 mm) clearance
to combustibles, framing members, and attic
or ceiling insulation when running vertical
chimney sections.
G. Support the vertical run sections -
On the vertical run, support the venting sys-
tem every 8 feet (2.4m) above the fireplace
vent outlet with field provided support straps
(Plumber's tape). Attach the straps to the vent
pipe and secure to the framing members with
nails or screws. See Figure 17 on page 12.
H. Change vent direction - At transition from
or to a horizontal/inclined run, install the
SV4.5E45 and SV4.5E90 elbows in the same
manner as the straight vent sections. The
elbows feature a twist section to allow them
to be routed about the center axis of their
initial collar section to align with the required
direction of the next vent run element. Twist
elbow sections in a clockwise direction only
so as to avoid the possiblity of unlocking
any of the previously connected vent sec-
tions. See Figure 18 on page 13 .
I. Continue installation of horizontal/inclined
sections - Continue with the installation of the
straight vent sections in horizontal/inclined
run as described in Step E. Install support
straps every 5 ft. (1.52 m) along horizontal/
inclined vent runs using conventional
plumber's tape. See Figure 26 , it is very
important that the horizontal/inclined run be
maintained in a straight (no dips) and rec-
ommended to be in a slightly elevated plane,
in a direction away from the fireplace of 1/4"
rise per foot (20 mm per meter) which is ideal,
though rise per foot run ratios that are smaller
are acceptable all the way down to at or near
level . Use a carpenter's level to measure from
a constant surface and adjust the support
straps as necessary.
SV4.5 HT-2
Termination
Exterior
Wall
SV4.5 HT-2
Termination
Exterior
Wall