Vermont Casting 3399, 3369, 3354, 3232, 3225, 3390, 3350, 3360 manual Side Wall Termination Assembly

Radiance Direct Vent/Natural Vent Gas Heater

ST650

Fig. 21 Fasten outer pipe with #12 x 1/2” sheet metal screw.

Install the Vent Adapter Pipe

(Simpson Dura-Vent Components)

1. Install the Restrictor Plate. Consult Page 7 to de-

termine whether the restrictor plate is needed. If so,

place the restrictor plate within the inner flue collar

as shown in Figure 18.

2. Discard the inner starter pipe shipped with the log-

set. Using the starter pipe assembly listed on Page

12, slide the inner section out to allow access.

• Run a bead of sealant around the bottom end of

the starter pipe and attach the assembly to the stove

using three 1/4-20 x 3/8” Phillips screws provided in

the parts bag. (Fig. 22)

3. Install the Outer Adapter Pipe. Orient the verti-

cal seam to the rear, and insert the crimped end of

the outer pipe into the flue collar. Fasten with three

sheet metal screws provided. (Fig. 23)

ST651

Fig. 23 Simpson Dura-Vent - install outer adapter pipe.

Side Wall Termination Assembly

1.Locate the vent opening on the wall. Refer to Page 6, Figure 5, to determine the opening centerline.

It may be necessary to first position the stove and measure to find the hole location. Depending on whether the wall is made of combustible materi- als, cut the opening to the size shown in Figure 24. Combustible wall openings must be framed as shown in Figure 24.

CFM System	9³⁄₈”
	(240mm)

9³⁄₈”

(240mm)

Combustible Wall

1/4-20 x	Inner Adpater Pipe
3/8” Phil-
lips Screws

DuraVent System

10”

(254mm)

VO584-100

10”

(254mm)

Framing Detail

7¹⁄₂”

Noncombustible

Wall

ST649

Fig. 22 Simpson DuraVent - install inner adpater pipe.

Fig. 24 Locate vent opening.

2.Measure the wall thickness and cut the wall sleeve sections to proper length (MAXIMUM 12”). Assemble the sleeve with the #8 sheet metal screws supplied. Attach the firestop plate to the sleeve end with the holes. (Fig. 25) NOTE: The wall sleeve is required in combustible walls only.

3.Install the Wall Firestop/Sleeve assembly into the wall cutout and fasten the firestop to the wall cutout framing members. (Fig. 25)

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