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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
17
Figure 22
ACBI CHIMNEY INSTALLATION
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.
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
length (see Figure 22).
3. ACBI: Every 20 feet and at the roof level,
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.
Figure 23
Figure 24
ATTIC RADIATION
SHIELD
UNIVERSAL
SUPPORT
FIRESTOP
OUTSIDE AIR KIT
(MANDATORY)
OPTIONAL CHIMNEY
OUTSIDE AIR INTAKE
(REQUIRED WITH
ACBI CHIMNEY
INSTALLATION)
FLASHING
COLLAR
RAIN CAP
STARTER
SECTION
ATTIC
RADIATION
SHIELD
FIRESTOP
CHIMNEY MODEL SQUARE HOLE
SIZE OPENING
ASHT+ 13-3/8"
(314 mm)
S2100+: 15-1/8"
(359 mm)
ACBI: Ceiling
(1” clearance)
15 in
380 mm)
ACBI: Wall 17 in (432 mm)
Note: See Table 2 for Sloped Roof Framing
Table 1 - Flat Roof Framing
Chimney Outside
Air Intake
(required when
using ACBI chimney)