8
Changing the fuel to one other than the one recommended by the manufacturer is
not allowed and the responsibility for such action lies solely with the User. The
consequences of incorrect operation of the boiler resulting from the above do not
constitute grounds for considering the incorrect operation of the boiler as a
physical defect of the product.
1.2 General characteristics of the boiler
Water boilers are a steel construction adapted for highly efficient combustion of sawmill
chips, the boilers are equipped with a combustion chamber where a burner with automatic ignition
is placed (the igniter may be optional in some versions of the device), a high-performance heat
exchanger, electronic controller and fuel tank.
The combustion process in the boiler is controlled by a microprocessor controller, which allows
the boiler to operate with a constant, preset temperature of the heating medium max. up to 90
oC
by feeding an appropriate amount of fuel to the burner part.
The controller is equipped with an additional temperature limiter, which causes complete stopping
of the combustion process in case the temperature of water leaving the boiler increases to 95
oC
.
BIOMASS BOILERS ARE LOW-TEMPERATURE WATER BOILERS AND ARE NOT
SUBJECT TO REGISTRATION BY THE TECHNICAL SUPERVISION AUTHORITY.
1.3 Delivery and assembly specifications.
The central heating boiler is delivered in an assembled condition, i.e. including thermal insulation,
doors, connection spigots, clean hatch covers and control unit, feeder and fuel tank.
Installation of the boiler unit in a household-level boiler room is recommended under the
supervision of an authorised installer. The installation should be collected by an authorised
technical service or an authorised employee of an authorised service centre.
Installation in accordance with the manufacturer's recommendations is required in the
process of granting the warranty for the boiler unit. The connection of the boiler unit to
the chimney system should be made using a RCW-S type chimney draught regulator,
e.g. from DARCO (fig. 19 , p. 31), under supervision or checked by the appropriate
technical service (chimney sweep).
The user should ensure the correct operation of the boiler:
●
Correct flue gas discharge by verifying the cleanliness and technical condition of the
chimney and, if necessary, installing additional devices improving the air throughput in the
chimney (fixed heads, rotating heads, self-adjusting sockets) at the chimney outlet.
●
Uninterrupted access to the tap water system used in the boiler fire protection system
(Fireman).
●
Correct ventilation in the room where the boiler is installed.
1.4 Fuel
The basic fuel recommended by the manufacturer is wood chips (photos 18 and 19) type B1 or
pellets type C with parameters:
fraction (chipset size) from 3.15-40 mm, deciduous and coniferous trees (for detailed
recommendations see table of fraction description according to EN ISO 17225-4 for
chipset type P31S, pt. 1.4.2)
maximum contaminants (ashes) ≤ 1.5%,
humidity 10-30%,
minimum energy efficiency (calorific value) 15 MJ/kg, recommended ≤ 17 MJ/kg.
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