
16 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Vertical
Rise
SV4.5E90
Elbow
Horizontal / Inclined Run SV4.5 HT-2
Termination
Firestop/Spacer
SV4.5L6/12/24/36/48
Vent Sections
Support Bracket Spacing
Every 5 ft (1.52 m)
See Figure 17 on page 12 for
vertical vent section support.
SV4.5 HT-2
Termination
Support
Brackets
Building
Support
Framing
Ceiling
Fireplace
Exterior
Wall
Exterior
Wall
TYPICAL HORIZONTAL VENT INSTALLATION
Figure 26
Push the vent component against the collar
untilit fullyengages,then twistthecomponent
clockwise,runningthedimplesdownandalong
theinclinechannelsuntiltheyseatattheendof
thechannels. TheunitizeddesignoftheSecure
Ventcomponentswillengageandsealboththe
inner and outer pipe elements with the same
procedure. Sealant and securing screws are
not required.
Note: An elbow may not be directly attached
to the appliance collar.
Remembertomaintain1"(25mm)clearance
tocombustibles,framingmembers,andattic
or ceiling insulation when running vertical
chimney sections.
HORIZONTAL (OUTSIDE WALL)
TERMINATION SYSTEM
F. Install firestop/spacer at ceiling -
WhenusingSecureVent,useSV4.5VFfirestop/
spaceratceilingjoists;whenusingSecureFlex,
use SF4.5VF firestop/spacer. If there is living
spaceabovetheceilinglevel,thefirestop/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/spacerwith8dnailsorotherappropri-
ate fasteners at each corner.
SecureVentSV4.5directventsystemcompo-
nents are unitized concentric pipe compo-
nentsfeaturingpositivetwistlockconnection,
(
refer to Figure 15
and 16
on page 12). Allof
the appliances covered in this document are
fittedwithcollarshavinglockinginclinedchan-
nels.Thedimpledendoftheventcomponents
fitoverthe appliance collar to create the posi-
tive twist lock connection.
A. Plan the vent run -
Analyzetheventroutinganddeterminethetypes
and quantities of sections required
4-1/2"(114mm),10-1/2"(267mm),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
combustiblesontheverticalsections.Clearances
for the horizontal runs are; 3" (76 mm) on top, 1"
(25mm)on sides, and1"(25 mm)atthe 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.
Cutand/orframe anopening,10-1/2"x12-1/8"
(267 mm x 308mm) inside dimensions, about
this center.
C.Frameceilingopening-Iftheverticalroute
is to penetrate a ceiling, use plumb line to
locatethecenterabovetheappliance.Cutand/
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 ).
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'stape).
Attachthestrapstothevent
pipe and secure to the framing members with
nails or screws.
See
Figure 17 on page 12.
H.Changeventdirection- Attransitionfrom
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
initialcollarsectiontoalignwiththerequired
direction of the next vent run element. Twist
elbowsectionsinaclockwisedirectiononly
so as to avoid the possiblity of unlocking
any of the previously connected vent sec-
tions. See
Figure 18 on page 13
.
I.Continueinstallationofhorizontal/inclined
sections- Continuewiththeinstallationofthe
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
importantthatthehorizontal/inclinedrun be
maintained in a straight (no dips) and rec-
ommendedtobeinaslightlyelevatedplane,
ina direction away from the fireplace of
1/4"
riseperfoot(20mmpermeter)whichisideal,
thoughriseperfootrunratiosthataresmaller
are acceptable all the way down to at or near
level
.
Useacarpenter’sleveltomeasurefrom
a constant surface and adjust the support
straps as necessary.
E. Attach vent components to each other -
Othervent sections may be addedto the previ-
ously installed section in accordance with the
requirementsoftheventtables. Toaddanother
ventcomponenttoalengthofventrun,alignthe
dimpledendofthecomponentovertheinclined
channelendofthe previouslyinstalled section,
adjusting the radial alignment until the four
lockingdimplesarealignedwiththeinletsofthe
four incline channels of the previous section.
Push the vent component against the previous
section until it fully engages, then twist the
componentclockwiserunningthedimplesdown
andalongtheinclinechannelsuntiltheyseatat
theendofthechannels.Thisseatingpositionis
indicated by the alignment of the arrow and
dimple as shown in
Figure 16 on page 12.
D.Attachventcomponentstoappliance-Toattach
avent component to the appliance collar, align the
dimpled end over the collar, adjusting the radial
alignmentuntilthefourlockingdimplesarealigned
with the inlets of the four incline channels on the
collar (
refer to Figure 15
on page 12).
Bothofthesehorizontalventsystemsterminate
throughanoutsidewall.BuildingCodes limit or
prohibit terminating in specific areas. Refer to
Figure 8
on page 7 for location guidelines.
Figures26, and Figures29 to 31on 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
pipemayalsobeused.AHorizontalVentTable
summarizeseachsystem’sminimumandmaxi-
mumverticalandhorizontallengthvaluesthat
can be used to design and install the vent
components in a variety of applications.