Alternate Heating COAL GUN S130, Инструкция по установке и эксплуатации

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reading indicated at SV, there will be a call for the
grates to cycle on, operating until ash temperature
climbs to the SV value. Whether the grates will be
actually observed to be running at this time will
depend on the position of the Mode Switch, whether
the induction fan is running, and where the timers
are at in their cycle. /e Mode Switch and Grate
Timers are described a bit later.
/e se ing of the /ermal Ash Monitoring
Control is the preferred way to keep the height of
the 1re set correctly in the Coal Gun. /e lower your
set point (SV), the higher the position of the 1re will
be in the burn pot. /is is because the 1re must
necessarily be further from the thermocouple based
sensor in order to reach the lower ash temperature
on the monitor. /e optimum se ing is the one that
gives you the best balance of eIciency and
performance. A Coal Gun under moderate demand
that has been actively 1ring for 10 minutes or more
should have a relatively small cone of black coal in
the center of the burn pot, with vigorously burning
coal all around the circumference of the burn pot
surrounding it. /e photo below illustrates
acceptable 1re positioning.
Coal Gun Fire Position
In addition to a higher position for the 1re, a
lower se ing on the /ermal Ash Monitoring
Control will also mean deeper ash under the 1re and
more opportunity for coal to burn completely before
dropping into the ash tub. /ere will also be less
likelihood that you will experience coal gas building
up and lighting oD suddenly in the boiler. /e main
downside is greater likelihood that the 1re will go
out during an extended period of low demand.
Deeper ash can also mean lower peak air@ow and
therefore, typically lower peak output. When you
have high demand, raising the se ing can increase
peak output, but may also lead to some unburned
coal dropping into the ash pan. If you have adjusted
this control and it is already set 10º F or more above
or below the factory se ings, limit adjustments to a
maximum of 5º at a time, and let the boiler operate at
the new se ing for 48 hours before observation and
readjustment. /e most important observations are
the position of the 1re in the burn pot and ash
quality. For the la er, you want to see less unburned
coal. Keep in mind that coal quality will play a role
in obtaining good ash quality.
Grate Timers and Settings
/e grate interval timers consist of two
Schneider timers located inside the control box.
/ese allow 1ne tuning of grate motor run time.
/ere is both an “On” timer and an “OD” timer. /e
On timer limits the maximum run time. /e OD
timer enforces a minimum oD cycle. /e interval
timers engage when the /ermal Ash Monitoring
Control is calling for grate operation.
Grate Timers
Keep in mind that most Coal Gun boilers will not
require adjustment of the internal, grate interval
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