Table of Contents
Advertisement
Flashing Collar
Flashing
Firestop
Figure 17
The duct system must be installed respecting
the following:
1. Remove the plates closing up the 8" dia. holes
on top of the fireplace. Then, cut the insula-
tion in order to obtain two 8" dia. openings.
Fix the adaptors on the fireplace openings
by turning clockwise (Figure 15).
2. Maintain at least a 2" (50 mm) clearance
between the ducts and any combustible
material; the required hole size is 13" x 13"
(330 mm x 330 mm).
Rain Cap
Roof Support
Attic Radiation Shield
6-1/2" Min.
(165mm) to ceiling
68" Min.
(1727mm)
42" Min.
(1067mm)
Non-Combustible
Facing
Exception #1: For the grills, the fram-
ing can be 10-3/4" x 10-3/4" (275 mm
x 275 mm) to provide the clearance as
required by the integral spacers on the
double outlet duct system.
3. The maximum number of elbows in a run
of duct is two.
4. Maintain at least 6-1/2" (160 mm) clearance
from the outlet grill framing to a combustible
ceiling, side wall or mantel.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
5. When traversing a combustible wall or floor,
a firestop must be installed at the wall or
floor penetration. The hole size must be
13" x 13" (330 mm x 330 mm)
6. Do not connect the hot air ducts to a central
heating system. Malfunction of the heating
system's blower will cause the fireplace to
overheat. A furnace duct is only single wall
and not double wall as is required for the
Montecito fireplace hot air exhaust.
7. Use only Lennox Hearth Products grills and
components as described in this manual.
Other grills or registers, for example, may be
too restrictive and may overheat the fireplace
or ceiling.
8. Do not use insulated flexible ducts as they
will overheat.
9. Do not use tees or any other components
than the ones specifically listed here.
10. Never allow the ducting to pitch down as
hot air will be trapped creating a fire hazard.
Never route the ducting downwards.
11. The hot air outlet grills must be installed with
the louvers pointing downwards in order to
prevent overheating adjacent ceilings.
12. Always install the two outlet grills when
using the double hot air outlet kit.
11
Advertisement
Table of Contents
