Lennox Hearth Ladera-BK - Manual (Page 15)

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 2 for the floor and ceiling holes and
Table 3 (Page 16) for the roof holes.
2. From below, install a firestop in each ceiling/
floor separation through which the chimney
will pass. At the attic level, install an attic
radiation shield from above (Figure 24a).
3. For ASHT+ / HT6103+ and S2100+ / HT6000+
chimneys place the first chimney length on
the fireplace. To lock it in place, turn 1/4 of
a turn clockwise. With the AC chimney, you
must use a starter section before installing
the first chimney length (Figure 25). Con-
tinue installing chimney lengths making sure
to lock each length in place.
4. Every time the chimney passes through
a ceiling or a wall, install the appropriate
firestop. When you reach the desired height,
install the roof support (Refer to instructions
included with the support).
5. Then, put the roof flashing in place and seal
the joint between the roof and the flashing
with roofing pitch (see Figures 26 and 27).
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.
6. Place the spacers and 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.
7. Install the chimney cap.
CHIMNEY MODEL
6”
SqUARE HOLE
SIZE OPENING
ASHT+ / HT6103+ 12-3/8” (314 mm)
S-2100+ / HT6000+ 14-1/8” (359 mm)
AC 15 in (380 mm)
Note: See Table 3 for Sloped Roof Framing
Table 2 - Flat Roof Framing
Figure 25
Rain Cap
Collar
Flashing
Attic Radiation
Shield
Firestop
Universal Support
Optional Outside
Combustion Air Kit
AC Starter Section
Figure 23 - Roof Framing
AC CHIMNEY INSTALLATION
(AIR COOLED GALVANIZED CHIMNEY)
Figure 24a
Attic Radiation Shield
ASHT / S2100
HT6103+ / HT6000+
Solid Packed Pipe
AC
Air Cooled Pipe
Figure 24b
Radiation Shield
Attic Radiation
Shield
Firestop
u Combustibles are not allowed below
top spacers above the fireplace. Facing in
front of fireplace must be non-combustible
below this area.
u
Chimney Outside
Air Intake
(required when
using AC chimney)
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