Dump Zone Control; Grates - Legacy Stoves SF170 Installation And Operator's Manual

Hand-fired coal boiler
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After adding soft coal, always stir
the fire to be certain the flames are
visible. This will prevent the
possibility of explosive gases being
generated.
Note: Ashes should be placed in a metal
container with a tight-fitting lid. Do not use this
container for storing other waste. The closed
container of ashes should be placed on a
noncombustible floor or on the ground outside
the home, well away from all combustible
materials, pending 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.

DUMP ZONE CONTROL

The temperature of the dump zone
control should be set no higher than
200º for the control to work
effectively. Setting the temperature
higher than this can allow the water
to boil before the circulator has time
to move the hot water away from the
boiler.
A dump zone control is standard equipment on
all Legacy Stoves coal boilers. It is installed in the
water wall and can be wired to a water circulator or
other approved provision for heat dumps.
control is a safety feature that will prevent the
possibility of the boiler overheating. In a situation
where the thermostat does not call for heat for an
extended period of time and the temperature in the
boiler rises to the temperature to which the control
is set, it will activate the dump zone to pump excess
heat away from the boiler and into the area being
heated.
e Grates are made of heavy-duty cast iron.
function of the grate system is to support the coal
while allowing air Eow through the 9re.
system also allows removal of the ashes by shaking
them through the grates.
without the use of tools. It is 9rst necessary to
remove the 9re bricks. Once they are removed, the
grates simply li; out. Li; the right end higher to
disengage from the shaking link. Tore-install the
grates, lower them, one at a time, le; end 9rst, be
sure the grate hooks into the grate link as you drop
it into place.
Note: Warped grates are not covered under
warranty. This type of failure is due to leaving ash
build up underneath the grates.
Your grates will last forever, as long as you keep
your ashes cleaned out of the stove. When ashes are
le; to pile up against the underside of the grates, the
air-Eow is blocked. With no air Eow through the
grates, they will begin to sag from the intense heat.
e grates are designed to accommodate three
di<erent sizes of anthracite coal. Pea is de9ned as
e
being able to 9t through a round screen hole of 9/16"
to 7/8". Nut or Chestnut is de9ned as being able to
9t through a round screen hole of 7/8" to 1½".
Finally, Stove coal which is 1½" to 2½" in size. Pea or
Nut you'll 9nd work the best for starting a 9re,
- 19 -

GRATES

e grate
e grates are removable
e

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