Replacement, expansion vessel
An additional expansion vessel and discharge pipe are not required if
a second high limit safety cut-out and a second maximum pressure
limiter are installed.
6.8 Fire protection
The fire safety regulations for wood combustion systems vary depend-
ing on the country.
The regulations valid for the relevant installation location must be
observed.
Fire safety, fuel store
The measures required for this are not part of the standard delivery of
KÖB Holzheizsysteme GmbH.
Note
In this regard, the conditions of the local planning office must be fulfilled
by the operator.
6.9 Commissioning
Initial commissioning of a newly installed system may only be carried
out by KÖB Holzheizsysteme GmbH or another contractor trained and
authorised by KÖB. Prior to commissioning, the system must be filled
with water, fuel must be stored for the commissioning and the instal-
lation must be monitored.
Fuel for commissioning
As the boiler system is cold and residual moisture is also extracted
from the refractory concrete during commissioning, the fuel for com-
missioning must be at least air dry. The heat-up process should be
carried out in the first three hours with low output. In order to check the
function of the silo discharge system, not too much fuel should be
stored so that, in the event of a fault, the discharge system can be
quickly released to remedy the cause. For commissioning, dry fuel
(max. w 20 %) should be stored in sufficient quantity for approx. 10 –
24 full operating hours.
Fuel quantities to be stored for commissioning:
Rated output Quantity
100 kW approx. 800 kg
150 kW approx. 1200 kg
220 kW approx. 1500 kg
300 kW approx. 2000 kg
400 kW approx. 2500 kg
540 kW approx. 3000 kg
Filling the heating system
Usually, the system is initially filled with raw water without chemical
treatment. This must be filtered and be free of suspended solids. Par-
ticular attention should be paid to careful ventilation during filling. In
the case of difficult water conditions (high hardness, etc.) and/or large
water volumes, VDI directive 2035 "Prevention of damage through
corrosion and scaling in hot water heating systems" must be observed.
Measures recommended by the directive for water treatment should
be carried out.
Note
The fill pressure of the cold hydraulic seal should be approx. 0.1 bar
higher than the pre-charge pressure of the sealed expansion vessel.
However, it must not exceed a maximum of 3 bar.
6.10 Fuels
The Pyrot was developed for processing dry wood remnants from the
wood processing industry. This includes dry residual wood, shavings,
sawdust, etc. and conditioned fuels (high grade, homogeneous quality
fuels). The combustion system is ideal for the combustion of pellets.
Suitable fuels
The Pyrot is suitable for the following dry to moist wood fuels: ■ Woodchips from forests up to a water content of 35 % (W35, G50)
■ Industry pellets, with an ash content of max. 1.0 %
■ Pellets with the quality seal DINplus or acc. to ÖNORM M 7135
Note
The following are unsuitable types of fuel: fossil fuels and those con-
taining sulphur, such as anthracite and coke, as well as plastics,
grain, straw, material soaked in flammable liquids and wood rem-
nants treated with plastics or wood preservatives.
Design information
(cont.)
50
PYROT
6
5822 516 GB
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