D. 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,
E. 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,
mmx 267 mm) inside dimensions, about this center (refer to Figure 14 on page 11 ).
F. Attach vent components to starter elbow -
To attach a vent component to the the starter elbow, align the dimpled end over the collar, adjusting the radial alignment until the four locking dimples are aligned with the inlets of
TYPICAL HORIZONTAL VENT INSTALLATION
Building | Support | Horizontal / Inclined Run | |
Brackets | |||
SV4.5 | |||
Support |
| Termination | |
Framing |
| ||
|
| ||
SV4.5E90 |
|
| |
Elbow |
|
|
|
| SV4.5L6/12/24/36/48 | Exterior |
Ceiling |
| Vent Sections | Wall |
Vertical | Firestop/Spacer | Support Bracket Spacing |
|
Rise |
| SV4.5 | |
|
| Every 5 ft (1.52 m) | |
|
|
| Termination |
| See Figure 17 on page 12 for |
| |
| vertical vent section support. |
| |
|
| Fireplace | Exterior |
|
| Wall | |
|
|
| |
Figure 26
the four incline channels on the collar (refer to Figure 15 on page 12).
Push the vent component against the elbow 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.
Note: A 90 or 45 degree elbow may not be directly attached to the appliance elbow collar.
G.Attach vent components to each other - Other vent sections may be added to the pre- viously 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 compo- nent over the inclined channel end of the previously installed section, adjusting the ra- dial 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.
H. 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 appropriate fasteners at each corner.
Remember to maintain 1" (25 mm) clearance to combustibles, framing members, and attic or ceiling insulation when running vertical chimney sections.
I. 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.
J. 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.
K. Continue installation of horizontal/inclined sections - Continue with the installation of the straight vent sections in horizontal/inclined run as described in Step F.
Install support straps every 5 ft. (1.52 m) along horizontal/inclined vent runs using con- ventional plumber’s tape. See Figure 26, it is very important that the horizontal/inclined run be maintained in a straight (no dips) and recommended 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.
It is important to maintain the required clear- ances to combustibles at the top and bottom for all horizontal/inclined runs.
Maintain a minimum 1" (25 mm) clearance to combustible materials for all vertical vent elements.
Clearances for horizontal vent elements are 1" (25 mm) at the sides and 1" (25 mm) on the bottom. Clearances above horizontal vent elements are 3" (76 mm) for all models and all applications. Exception: Clearance is 5" (127 mm) for MPLDV35, MPLDV40 & MPLDV45, when the center line of the hori- zontal run is less than 48" (1219 mm) above the fireplace top wrapper surface.
L. Assemble vent run to exterior wall - If not previously measured, locate the center of the vent at the exterior wall. Prepare an opening as described in Step D. Assemble the vent system to point where the terminus of the last section is within 7 in. (178 mm) to
16
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.