Acbi Chimney; Installation Instructions - Lennox Hearth Products Villa Vista Installation & Operation Manual

ACBI CHIMNEY INSTALLATION
COLLAR
FLASHING
ATTIC RADIATION
SHIELD
OPTIONAL CHIMNEY
Chimney Outside
OUTSIDE AIR INTAKE
Air Intake
(REQUIRED WITH
(required when

ACBI CHIMNEY

using ACBI chimney)
INSTALLATION)
Figure 22
CHIMNEY INSTALLATION INSTRUCTIONS
1. Cut and frame the holes in the ceiling, floor
and roof where the chimney will pass (see
Figure 23). Use a plumb-bob to line up the
center of the holes. The sizes are indicated in
Table 1 for the wall and ceiling holes and Table
2 (Page 18) for the roof holes.
NOTE: ACBI chimney require 1" clearance
going through ceiling and roof and 2" clear-
ance through a wall. ASHT+ chimney require
2" clearance. Do Not fill this air space with
insulation or any combustible material.
RAIN CAP
OUTSIDE AIR KIT
(MANDATORY)
CHIMNEY MODEL
ASHT+
S2100+:
ACBI: Ceiling
(1" clearance)
ACBI: Wall
Note: See Table 2 for Sloped Roof Framing
Table 1 - Flat Roof Framing
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
UNIVERSAL
SUPPORT
2. From below, install a firestop in each ceil-
ing/floor separation through which the chimney
will pass. At the attic level, install an attic
radiation shield from above, (see Figure 24).
S2100+ and ASHT+: Place the first chimney
length on the fireplace, to lock turn 1/4 of a
turn clockwise. ACBI: A starter section must
be installed before installing the first chimney
FIRESTOP
length (see Figure 22).
STARTER 3. ACBI: Every 20 feet and at the roof level,
SECTION
install a universal support fastening the straps to
the surrounding joists. ASHT+: Install support
as required (see Chimney Support Installation
Section on Page 20).
4. Put the roof flashing in place and seal the joint
between the roof and the flashing with roofing
pitch (see Figures 25 and 26). For sloping roofs,
place the flashing under the upper shingles and
on top of the lower shingles. Nail the flashing
to the roof, using roofing nails.
5. Place the storm collar over the flashing and
tighten it with the bolt supplied. Finally, seal the
joint between the storm collar and the chimney,
using silicone caulking.
6. Install the chimney cap.
SQUARE HOLE
SIZE OPENING
13-3/8"
(314 mm)
15-1/8"
(359 mm)
15 in
380 mm)
17 in (432 mm)
Figure 24
Figure 23
ATTIC
RADIATION
SHIELD
FIRESTOP
17