Lennox Hearth LMDVT-3328-CNE and on Pages, L. Install Firestop/Spacer at exterior wall

J. 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 B. Assemble the vent system to point where the terminus of the last section is located relative to the exterior surface to which the termination is to be attached as shown in

12-1/8"

7"

(178)

To help minimize water infiltration it is recommended that the Firestop/Spacer (SV4.5HF) be installed on the exterior side of the wall.

10-1/2"

SV4.5 HT-2 Termination

Figure 35 and Table 12 on Pages 18 & 19.

If the terminus of the last section is not within this distance, use the telescopic vent section SV4.5LA, as the last vent section. For wall thicknesses greater than that shown in Figure 35, refer to Table 12 on Page 19. This Table lists the additional venting components needed (in addition to the termination and adapter) for a particular range of wall thicknesses.

K. Attach termination adapter - Attach the adapter (adapter - SV4.5RCH - provided with the termination) to the vent section or telescoping vent section), elbow or appliance collar as shown

(308 mm)

5-1/8"

(130 mm)

Adapter

SV4.5RCH

6 to 48 inch Vent Section, Telescopic vent section, Elbow or Appliance Collar

(267mm)

3"

(76 mm)

1"

(25.4 mm)

Note: Centerline of Vent Piping is NOT the Same as the Centerline of the Framed Opening.

See Figure 14 on Page 9 for Min.

Distance to Base of Appliance.

Base of Appliance

18

in Figure 34 in the same manner as any SV4.5 vent component (refer to Step E).

L. Install Firestop/Spacer at exterior wall

-When using the square termination, install SV4.5HF (Secure Vent), SF4.5HF (Secure Flex) Firestop/Spacer over the opening at the exterior side of the framing, long side up, with the 3 inch spacer clearance at the top as shown in Figure 34, and nail into place.

(The Firestop/Spacer may also be installed over the opening at the interior side of framing).

M. Install the Square Termination (SV4.5HT-2)

Install the square termination - For the last step

,from outside the exterior wall, slide the collars of the termination onto the adapter (the outer inside the outer and the inner outside the inner) until the termination seats against the exterior wall surface to which it will be attached. Orient the housing of the termination with the arrow pointed upwards. Secure the termination to the exterior wall. The horizontal termination must not be recessed into the exterior wall or siding by more than the 1-1/4" (32 mm) as shown in Figure 35.

IMPORTANT

The vent termination is hot while in operation and for a period of time following the use of the fire- place. To prevent contact with hot surfaces, we recommend the use of a Termination Guard. See Items 12 and 13 on Page 31. This can be purchased at your local dealer.

Figure 34 - INSTALLING SQUARE HORIZONTAL TERMINATION (SV4.5HT-2)

�Use silicone caulking to seal			Maximum Wall Thickness
the top and sides of the			10 in. (254 mm) �
termination, up to the		Interior Surface of	Exterior Surface of Siding
underlayment, stucco, or
masonry wall surface.		Finished Wall	Exterior Surface of
		Maximum Extent of	Framing
Siding			6 in. to 9-1/4 in.
		Vent Run Sections
�Caulk			�
		Relative to Exterior	(152 to 235 mm)
		Surface of Framing
		Last Vent Section.
		Use Telescopic Vent
		Section (SV4.5LA), If
		Necessary	SV4.5 HT-2
			Termination
�Caulk		SV4.5 HT-2
		Termination
		Adapter
		SV4.5RCH	1-1/4” Maximum Recess of
			Square Termination
Stucco			into Exterior Finishing Material
		vFor thicknesses greater
		than 10", see Table 12
	Venting Connection and Exterior Wall Recessing of the Horizontal Square
Figure 35	Termination (SV4.5HT-2).

Horizontal terminations have been designed to perform in a wide range of weather condi- tions. Our terminations meet or exceed industry standards.

When selecting the locations of your horizontal terminations, do not place the termina- tion where water from eaves and adjoining rooflines may create a heavy flow of cascad- ing water onto the termination cap. If the cap must be placed where the possibility of cascading water exists, it is the responsibility of the builder to direct the water away from the termination cap by using gutters or other means.

Take care to carefully follow the installation instructions for the termination, including the use of silicone caulking where required.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.