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2.4 A fire hazard
With insertion-type firing systems, the conveying route
creates a connection between the silo and the burning ma-
terial in the boiler plant.
With the PYROT
insertion-type heating boiler, the feed au-
ger is also the metering auger, and is thus always filled up
with material during operation There are various safety
devices provided to prevent burn-back.
Temperature sensors:
By means of temperature sensors on the feed auger, in
case of excess temperature the loading to the feed auger
is interrupted, and the feed auger's material is inserted
into the combustion chamber.
Slide valve (optional):
This closes in case of a standstill, danger of burn-back or
power failure (spring return motor).
valve (optional):
Instead of a slide valve, in silos with pressurisation.
Drop-off route:
A vertical drop-off section interrupts the connected line of
burning material.
Fire-extinguishing system (option):
This system, which functions independently of the electri-
cal power, brings about a flooding of the material to be
burned that is located in the feed auger. The activation
temperature is approx. (95°C) 200°F.
2.5 Wood fuels, minimum requirements
The PYROT is only suitable for incinerating the fuels listed
in Spec Sheet 1010 "Minimum Requirements for Wood
Fuels" (see supplement).
If different fuels are used, Viessmann will not assume any
liability for the functioning or service life of the boiler
plant. Refer to the "Warranty" section in the General
Terms and Conditions of Delivery.
-
Born wood only
-
Do not use chemicals or fluids to start fire.
-
Do not burn garbage, gasoline, naphtha, engine oil, or
other inappropriate materials.
2.6 Filling the fuel storage unit
When storage facilities for wood are required, the wood
should be kept at least (1.5m) 5ft from the heating appli-
ance.
2.6.1 By dumping
Rotary sweep extraction and spring-operated extraction
Heating system in operation:
-
If the articulated arms or spring-mounted plates are still
covered by fuel, refilling can be carried out immedi-
ately.
-
If the articulated arms or spring-mounted plates are no
longer covered by fuel, fill the silo evenly to approx.
(30 cm) 1ft above the articulated arm or over the
spring-mounted plates. As soon as the articulated
arms or spring-mounted plates have retracted through
a request for material, the refilling can be continued.
Heating out of operation:
-
If the articulated arms or spring-mounted plates are still
covered by fuel, refilling can be carried out immedi-
ately.
-
If the articulated arms or spring-mounted plates are no
longer covered by fuel, fill the silo evenly to approx.
(30 cm) 1ft above the articulated arm or over the
spring-mounted plates. Then activate the "SILO FILL-
ING" function. To do so, press the LOADER SYSTEM
key (F4) and then the left arrow key (<). Then select
"YES" and confirm with "OK". Wait until the articu-
lated arms or the spring-mounted blades go under the
cup washer, and then finish evenly filling the silo. The
"SILO FILLING" function brings about the filling of the
fire box.
NOTE: The "SILO FILLING" function cannot be activated
until the heating system has been out of operation for one
hour.
Moving floor conveyor
-
Fuel can be refilled automatically.
Funnel extraction system
-
It is mandatory that the heating system be in opera-
tion!
2.6.2 By blowing in
The heating system has to be out of operation (danger of
excess pressure or negative pressure caused by the action
of blowing-in). Filling procedure as described in section
2.6.1.
2.7 Correcting malfunctions in the feed systems
The cause of motor malfunctions in feed systems is usu-
ally clogging by large pieces of wood or foreign matter.
CAUTION
DANGER OF INJURY:
Always turn off the master switch before carrying out any
repair of a malfunction on feed systems and every time
before a maintenance lid is opened or a protective device
is removed!
The automatic operation of the system makes it impossi-
ble to foresee the time point when the conveying equip-
ment will switch on.
Summary of Contents for PYROT KPT 1250
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