Lennox Hearth CAMBRIA 850 - Manual (Page 6)

IMPORTANT CAUTIONS
A. Do not block the hot air vents to the fire-
place as this will cause the fireplace to
overheat.
B. Never use gasoline, gasoline-type lantern
fuel, kerosene, charcoal lighter fluid, or
similar liquids to start or ‘freshen up’ a
fire in this fireplace. Keep all such liquids
well away from the fireplace while it is in
use.
C. Do not burn coal. The sulphur in coal will
corrode the firebox and chimney.
D. Keep combustible materials at least 48”
(1.2 m) away from the front of the fireplace
opening.
E. Never leave children unattended when
there is a fire burning in the fireplace.
F. Do not use the CAMBRIA as an incinerator
to burn paper, cardboard or construction
material such as pressed wood, plywood
or lumber. Use only untreated wood. Wood
protectors, metallic paper, coal, plastic,
waste, sulphur and/or oil will damage the
fireplace.
G. Do not burn driftwood which has been in the
ocean or salt water. The salt will corrode
the firebox and chimney.
H. Do not burn wood in the area in front of the
grate.
I. Do not allow the wood to smoulder or burn
without flame, since this will produce
excessive creosote in the unit as well as
increased particulate emissions.
MAINTAINING YOUR FIREPLACE
Creosote - Formation and Need for Removal
When wood is burned slowly, it produces tar
and other organic vapors, which combine
with expelled moisture to form creosote. The
creosote vapors condense in the relatively
cool chimney flue of a slow-burning fire. As
a result, creosote residue accumulates on the
flue lining. When ignited this creosote makes
an extremely hot fire.
The chimney shall be inspected at least twice
a year during the heating season to determine
when a creosote buildup has occurred.
When creosote has accumulated it shall be
removed to reduce the risk of a chimney fire.
When the creosote accumulation is large, a
creosote fire in the chimney can damage the
chimney and overheat the surrounding wood
framing. Creosote formation in a chimney can
be minimized by making sure there is always
visible flame burning, avoid smouldering fires
and by proper refuelling techniques.
Chimney Maintenance - Regular chimney
inspection and maintenance combined with
proper operation will prevent chimney fires.
Keep your chimney clean. Do not allow more
than 1/16” (1.6 mm) creosote build up in your
chimney. The amount of creosote will depend
on variables such as frequency of use and type
of fire. We recommend that you:
A. Initially inspect the chimney system weekly.
From this, you will learn how often it will be
necessary to clean your chimney.
B. Have your chimney cleaned by a qualified
chimney sweep. If you wish to clean it your-
self, we recommend using a stiff plastic or
non-metallic brush. If a metal brush is used,
its size should be slightly smaller than the
flue to avoid damaging the chimney. Do not
use a brush that will scratch the stainless
steel interior of the chimney.
Warning: The chimney damper must be opened
when sweeping the chimney to avoid ash and
creosote accumulation in the fireplaces air
circulation area.
C. Do not expect chemical cleaners to keep
your chimney clean. The rain cap can be
removed for inspection and/or cleaning of
the chimney. Using gloves, firmly grip the
upper portion of the rain cap. Turn the cap
and lift it off the chimney.
Dealing With a Chimney Fire
Regular chimney maintenance and inspection
can prevent chimney fires. If you have a chimney
fire, follow these steps:
1. IMPORTANT: Close the fireplace door and
the combustion air controls; this will stifle
the fire.
2. Alert your family of the possible danger.
3. If you require assistance, alert your fire
department.
4. If possible, use a dry chemical fire extin-
guisher, baking soda or sand to control the
fire. Do not use water as it may cause a
dangerous steam explosion.
5. Ensure that sparks and hot embers coming
out of the chimney are not igniting the roof.
6. Do not use the fireplace again until your
chimney and fireplace have been inspected
by a qualified chimney sweep, your dealer,
or a fire department inspector.
DISPOSING OF ASHES
Note: For better performances, we recommend
leaving 1/2 inch of ashes in the firebox.
Remove ashes only when the fire is out and
the ashes are cold (24 to 48 hours after the
fire is out). Do not leave the ashes in the house
as they give off carbon monoxide and other
toxic gases.
Refractory Brick Replacement
(refer to Figure 6)
The intense heat of the fire will normally cause
hairline cracks in the refractory brick. These
cracks can be minimized by proper curing as
described in First Fires on Page 4. They will
not normally diminish the effectiveness of the
refractory brick. If large cracks develop, then
the refractory should be replaced. To replace
the refractory bricks, follow these steps:
1. Remove the front refractory bricks
2. Remove the andirons
3. Remove the side refractory supports
4. Remove the side refractory bricks
5. Remove the back refractory brick
6. Remove the bottom refractory brick
To install the new refractory bricks, follow the
above steps in reverse.
DOOR FRAME FINISH CARE
Use a glass cleaner and a soft cloth to polish
the casing. Do not use abrasives such as steel
wool, steel pads or an abrasive polish for they
may scratch the frame’s finish.
Door Installation
(refer to Figure 5)
The doors on the Cambria fireplace are factory
installed. To remove the doors, remove the
finishing trim, then simply pull them up from
the hinges. The door adjustment has been set
at the factory. If the fit is still not perfect, you
can adjust the door using the hinge screws.
(See Figure 8, #1)
Figure 5
WARNING
Disposal of Ashes: Ashes should
be placed in a metal container
with a tight fitting lid. The closed
container of ashes should be
placed on a non-combustible floor
or on the ground well away from
all combustible materials, pend-
ing final disposal. If the ashes
are disposed of by burial in soil
or otherwise locally dispersed,
they should be retained in the
closed container until all cinders
have thoroughly cooled.
6 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.