Lennox Hearth EST-50 - Manual (Page 4)

4
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • ESTATE™ SERIES WOOD-BURNING FIREPLACES • MODELS EST-36/42/50 • CARE AND OPERATION INSTRUCTIONS
Figure 2
HARDWOODS DENSITY
Alser, Red .41
Ash .49-.60
Aspen .38-.39
Basswood, American .37
Beech, American .64
Birch .55-.65
Butternut .38
Cherry, Black .50
Chestnut, American .43
Cottonwood .34-.40
Elm .60.63
Hackberry .53
Hickory, Pecan .60.66
Hickory, True .69-.75
Honey locust .66 (est.)
Locust, Black .69
Magnolia .48-.50
Maple .48-.63
Oak, Red .59-.67
Oak, White .64-.88
Poplar .42
Sassafras .42
Sweet gum .52
Sycamore, American .49
Tanoak .64 (est.)
Tupelo .50
Walnut, Black .55
Willow, Black .39
SOFTWOODS DENSITY
Bald cypress .46
Cedar .31-.47
Douglas Fir .46-.50
Fir .32-.43
Hemlock .40-.45
Larch, Western .52
Pine .39-.59
Redwood .35-.40
Spruce .35-.41
Tamarack .53
STARTING A FIRE
1. To start a fire in a the fireplace properly, first
check the operation of the flue damper.
2. To prevent smoking at start-up, close any
window located near the fireplace when first
lighting a fire. The closed windows may be
reopened once a chimney draft is drawn in
the fireplace.
DAMPER CONTROL
This fireplace is fitted with a manually controlled
chimney damper. The chimney damper should
be closed when the fireplace is not in use to
prevent cold air from entering the home through
the chimney system.
The damper is controlled through the use of a
control lever located within the firebox opening
at the top center just behind the firebox lintel
(Figure 2 ).
EST-36 and 42 models - To lock the damper
blade in the OPEN position, push the damper
handle back and up (away from the front of
the fireplace). To lock the damper blade in
the CLOSED position, pull the damper handle
FORWARD and DOWN (toward the front of
the fireplace).
EST-50 models - To lock the damper blade
in the OPEN position, pull the damper handle
FORWARD and DOWN (toward the front of
the fireplace). To lock the damper blade in the
CLOSED position, push the damper handle back
and up (away from the front of the fireplace).
Always keep the appliance flue damper OPEN
when operating the fireplace.
3. The grate in the firebox should be centered
on or over the bottom hearth so your fire can
breath properly. Crumble and twist plenty of
newspapers UNDER the grate and criss-cross
some small dry kindling sticks on top of the
paper or on the bottom of the grate.
4. Build a pyramid of three split logs (split will
start much faster). Arrange the uneven wood
to provide plenty of air space between.
5. Now, light the paper at both sides of the
firebox.
6. Close the screens to prevent the escape of
sparks and embers.
7. Close the damper only when your fire is
completely out and ashes are cold. Keep closed
when fireplace is not in use to prevent unneces-
sary loss of heated or cooled air.
GLASS DOOR OPERATING SAFETY
PRECAUTIONS AND INSTRUCTIONS
These fireplaces may be equipped with glass
doors. Refer to the end of this document for
a listing of the glass doors approved for use
with these fireplaces.
However, most wood is sold by volume, not by
weight. To determine the best heating source,
look at the density of various wood types. (Den-
sity is the weight for a given size.) The higher
the density, the more potential heat output. A
standard cord has a volume of 128 cubic feet.
This figure also includes the air space between
and around the wood. The actual volume in a
standard cord is between 60 and 100 cubic feet;
depending on how tightly the wood is packed.
Assuming that you are comparing two standard
cords of different species but the same volume
and moisture content, the denser species will
provide more BTU’s. The table of wood species/
densities reveals more helpful guidelines.
WARNING
If your fireplace is equipped
with glass doors, it should be
operated with the doors fully
open or fully closed. If the doors
are left partially open, gas and
flames may be drawn out of the
opening, creating risks of both
fire and smoke. Refer to Figure 3
for proper operating conditions.
EST-36 & EST-42
EST-50
Damper
OPEN
Damper
CLOSED
Lintel
~
Combustion
Air Actuator
Damper
CLOSED
Damper
OPEN
Lintel
~
Combustion
Air Actuator