GLASS CARE
Glass Replacement
The glass used for the Brentwood™ fireplace
is a high temperature ceramic glass (1,400°
F). If the glass breaks, it must be replaced
with an identical ceramic glass. Tempered
glass or ordinary glass will not withstand the
high temperatures of the Brentwood fireplace.
Replacement glass should be purchased from a
Lennox Hearth Products dealer (see “Replace-
ment Parts”, Page 23). DO NOT OPERATE THE
UNIT WITH CRACKED OR BROKEN GLASS.
Glass Cleaning
The Brentwood fireplace is designed to keep
the glass clean under normal operating condi-
tions. If the Brentwood fireplace is operated
continuously with the combustion air controls
closed, the glass will tend to get dirty unless
the fuel, firebox and glass are maintained at
hot temperatures (see “Refueling For Best
Performance”). To clean the glass, there are a
number of specially designed cleaners. Your
authorized Lennox Hearth Products dealer can
recommend a suitable cleaner which is available
in your area. Regular household glass cleaners
will not clean creosote. Do not use abrasives
such as steel pads, steel wool or oven cleaner
as they will scratch the glass.
DO NOT USE CHEMICAL GLASS CLEANERS
ON PAINTED SURFACES AS IT MAY CAUSE
THE PAINT TO PEEL.
CAUTION : DO NOT ALLOW WINDOW CLEANER
TO GET IN CONTACT WITH DOOR GASKET OR
PAINT ON FACADE OR DOOR. ONCE CLOSED,
CONTACT OF GLASS CLEANER WITH THE
FIREPLACE FACADE CAN PROVOKE PAINT
PEELING OFF.
If possible, you should choose a location
where the chimney will pass through the
house without cutting floor or roof joists
(see fireplace dimensions Page 9).
B. Usually, no additional floor support is
needed for the fireplace. The adequacy of
the floor can be checked by first estimating
the weight of the fireplace system. Weights
are given in the appendix. Next, measure
the area occupied by the fireplace which is
normally 36” x 24-1/2” (914mm x 622mm).
Note the floor construction and consult your
local building code to determine if additional
support is needed.
C. The Brentwood fireplace may be installed
directly on the floor or on a raised base (for
proper guidelines, refer to “Hearth Extension
Requirements”) and a minimum of 6’8” (2
m) measured from the base of the appliance
to the ceiling is required.
When selecting the location, the chimney outlet
position and the direction of the wind are impor-
tant factor affecting the chimney performance.
To allow a maximum draft and to reduce wind
turbulence, the chimney must:
• Penetrate the highest part of the roof.
• Be installed as far as possible of roof offsets,
trees or any other obstructions that may
cause wind turbulence and back drafts in
the chimney.
• The least amount of offsets (elbows) pos-
sible.
Gasket Replacement
Remove the door from the unit (see Page 6)
and lay it on a clean unabrasive surface. To
replace the gasket, first remove all of the old
gasket and gasket cement. Make sure that the
surface is totally clean before applying new
cement (a high temperature silicone caulking
rated at 500° F [260° C] is suitable) or adhesion
problems may result. Apply gasket cement to
the gasket channel and install the new gasket.
This replacement part is available from your
Lennox Hearth Products dealer in the following
dimensions:
Gasket Length Dimensions Part No.
Around
Glass
69
(1753)
5/16” dia.
(8) SR1823H
On Door
Frame
73
(1854)
5/8 dia.
(15.9) SR1823G
Table 1 Inches (millimeters)
FIREPLACE INSTALLATION
Locating The Brentwood Fireplace
A. The best location to install your fireplace is
determined by considering the location of
windows, doors, and the traffic flow in the
room where the fireplace is located, allow-
ing space in front of the unit for the hearth
extension and the mantel, and taking into
consideration the location of the hot air ducts
(optional), outside air kit and chimney.
7
Marginal Location
Wind Direction
Location
Not
Recommended
Outside Air Intake
Facing the Wind
Location
Not
Recommended
Location Recommended
Figure 6 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.