KOB KOB PYRTEC SERIES, Инструкция по сборке и установке

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7 Fire Protection
The fire protection regulations for wood heating
systems differ from country to country.
The regulations applicable to the respective lo-
cation of installation must always be complied
with.
7.1 Protection against burn-back for
the boiler plant
These are part of the scope of delivery for the
PYRTEC Grate Firing System.
7.1.1 Preventing overfilling of the fire box
According to TRVB 118, a level monitor must be
installed to prevent overfilling of the fire box. The
PYRTEC Grate Firing System has a light barrier to
monitor the embers.
7.1.2 Preventing burn-back
With a sensor directly on the insertion pipe, any
danger of burn-back beginning will be detected
and quickly counteracted at an early stage through
boosted output (an increase in the advancing of
the material).
As a result, any requirement for a protective device
coming into effect is avoided, and normal opera-
tion, defined as the greatest possible degree of
safety supplying heat, is adhered to.
7.1.3 The backflash safeguard (RZS)
According to TRVB 118, a backflash safeguard is
required for all facilities over 150 kW.
TRD 414 prescribes a continuously present isolat-
ing layer if a spark-alarm and extinguishing system
is dispensed with. (TRD 414 refers primarily to
remnant wood from the processing of wood and
derived timber products.)
For chip materials from the forestry and sawmill
sectors, the restrictions are eased in part in this
connection.
The PYRTEC Grate Firing System is always
equipped with an isolating layer and is continu-
ously operated with negative pressure.
As a result, according to both TRVB 118 and TRD
414, the PYRTEC Grate Firing System is consid-
ered as equipped with a backflash safeguard
(RZS).
7.1.4 Automatically Triggering Extinguishing
System for the Furnace Feed (SLEK)
A water extinguishing system is always necessary
on the feed auger.
This system should reliably prevent burn-back in
case of a malfunction (such as a power failure).
For safety reasons and to prevent damage by
flooding, connecting the extinguishing system di-
rectly to the water network is not advisable.
This extinguishing system must always be
equipped with a 25-l extinguishing water tank with
a float-type switch and an adjustable Danfoss ex-
tinguisher valve.
According to TRVB 118, the tank for the SLE must
be equipped with a level monitoring system.
If there is a shortage of water, the PYRTEC Grate
Firing System will switch off automatically. In case
of excess temperature, the feed auger will be
flooded reliably but in a limited fashion.
The pipework for the extinguishing system
must be carried out by the heating engineer
according to Spec Sheet 4550.
7.2 Burn-back safeguard for the fuel
supply system (RSE)
The rest of the "burn-back protection for material
transport" depends on the respective requirements
(location, size of the fuel storage site, material,
pressure conditions & regulations), these being
separate items for the scope of delivery ordered
from KÖB & SCHÄFER GmbH according to the
descriptions below.
7.2.1 Automatically Triggering System for the
Material Supply System (SLE-M)
Approved in part as a variation to the shut-off valve
in pressure-less fuel storage units (does not meet
TRVB).
The installation of the extinguishing system
must be carried out by the heating engineer
according to Spec Sheet 4550.
7.2.2 The slide valve
This is approved in pressure-less fuel storage units
in all cases and applies according to TRVB 118
(test certificate BV 2979/89) as a suitable safe-
guard against back-burn.