7
AmeriVent Model HS/HSS All-Fuel Chimney
Installation Instructions
b. For wall thickness less than 8 inches, use a 12-inch
long piece of chimney. For walls 8 inches or thicker,
you must use an 18-inch or 24-inch long piece of
chimney. Make sure that the 4½-inch minimum
dimension shown in Figure 26 is maintained. Attach
the chimney section to the chimney tee branch in the
same manner described in A.2., Page 2. Slide this
assembly of chimney and tee through the thimble as
shown in Figure 24. The tee cap fits on the inner wall
at the bottom end of the tee trunk (see Figure 23).
When the chimney tee is fixed securely in place, add a
bead of high-temperature silicone sealant at the
interface where the tee branch passes through the wall
thimble on the exterior surface to prevent air infiltration.
c. Install wall support per separate wall support
instructions, and secure support to wall with lag
screws or toggle bolts (see Figure 26).
3.
Assemble Chimney Sections
a. Assemble per Section A.2., Page 2.
b. Support Bracket Assembly must be used every other
section or every 6 feet, and must be secured to wall by
lag screws or toggle bolts to provide lateral support of
the chimney and to ensure correct spacing to wall.
4.
For Overhanging Roofs
a. If roof overhangs the wall of the structure so that
passage of the chimney is obstructed, it is necessary
to cut a hole in the overhang. Leave a minimum of 2-
inch clearance and install the flashing and storm collar
per Section A.6.a-e., Page 4 (see Figure 14).
b. Alternate Method: Cut away the portion of overhang
as shown in Figure 25, allowing for minimum 2-inch
clearance to combustible material. Do not use 30°
offsets to overcome overhang.
5.
Chimney Cap
Install the chimney cap per Section A.6.f., Page 5.
6.
Extended Height
If the chimney extends more than 5 feet above the roof, it
will require additional bracing. We suggest using a Roof
Brace Kit or a field-fabricated assembly per section A.6.g.
7.
Connect Appliance to Chimney
a. Slip the black single-wall adapter furnished with the
tee over the inner liner of the branch of the chimney
tee with the adapter’s 45° flange toward the tee (see
Figure 26). Position the black pipe end plate over the
single-wall adapter and over the end of tee branch.
Fasten pipe end plate to outer wall of the tee branch,
using a minimum of two (2) ³/
8
-inch sheet metal
screws furnished with end plate.
b. Connect the appliance to the chimney’s single-wall
adapter (see Figure 26) by using a minimum 24-gauge
single-wall connector pipe. Clearances from
connector pipe to combustible material shall be as
specified in Chapter 5 of the National Fire Protection
Association (NFPA) Standard 211.
NOTE:
For reduced clearance applications or mobile
home installations, AmeriVent Model DCC
Double-Wall Chimney Connector is also available.