Davinci
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GENERAL INFORMATION

The stove is designed for burning pellets in a small
percentage of pits and dried maize in a mixture with pellets.
Almost the entire part of the thermal power of the
fireplace is concentrated in the water jacket of the heating main
coolant-water. A too small part of power radiates from hearth. This
power through infrared radiation and convection can warm the room in
which the fireplace is located.

DESCRIPTION

Pellet stoves “DA VINCI” are
designed and manufactured according to the latest contemporary concepts
for heating with biomass, the utmost respect nature and the environment
and at the same time facilitating the user, given the high calorific
value per unit volume of fuel, its convenient transportation, the
minimum quantity of soot and ash in combustion and last but not least
– the separation of minimum quantities of harmful gases
during incineration and also environmentally sound production.
Pellet stoves “Da Vinci” provide
thermal comfort with minimal time for service. They are designed
primarily for use in urban environments, where porting and combustion
of wood or coal is inconvenient, cumbersome or polluting. The
combustion process runs automatically, without requiring continuous
surveillance and/or loading. Management and maintenance of the
combustion process is carried out with the help of embedded
microcomputer system supplied from the mains and consuming
insignificant amount of electricity.
Pellet stove “Da Vinci” is intended
for heating of family houses, apartments, offices, production halls and
other similar objects with heat losses from 5-25 kW.
The stove is a modern, high-efficiency and
environmentally sound means for burning pellets (pressed wood chips).
The heating system is with forced circulation of the heating water and
allows the use of both open and closed expansion tanks.

MODELS

Pellet stoves “Da Vinci” are
manufactured in three different with different power:

• DV 140 AIR (small-14 kW)
• DV 140 HIDRO (small-14 kW)
• DV 180 HIDRO (median-18 kW)
• DV 220 HIDRO (large-22 kW)
• DV 250 HIDRO (large-25 kW)

The two latest different have the same external
dimensions. The action and the way of management and use of the three
models is the same.

FUEL

The main fuel, which uses the stove, Pellet, but can
also be used dry pits, as well as dried corn. The pits and corn can be
burned in small relative amounts, up to a maximum of 15% of the mass of
the main fuel and mixed with it.

ELECTRONIC CONTROL SYSTEM

The process of burning is controlled using the built-in
electronic system.
At the top of the stove is located in command box to set
the current parameters of combustion and control of the combustion
process. The command box is part of the microcomputer system, control
of the stove.
Electronic management system consists of two blocks:
display, located in the rear part of the upper decorative lid Fireside
and managing block, which is located on the bottom base inside the
fireplace. The two units are connected to each other with the necessary
information and power lines.
The electronic system performs the following tasks:

• define, select and maintain the power of the stove;
• powered and operated motor for the venting of the
  combustion chamber;
• powered, manage and monitor the correct operation of
  the motor drive mechanism, screw conveyer;
• monitor certain internal temperatures in the stove
  and when they exit outside the predefined tolerances generates
  appropriate corrective actions;
• protecting and providing safety of shafts stove in
  incorrect handling of user;
• submit appropriate messages in exceptional events
  leading to errors in the work of the stove;
• provides a programming service of the combustion
  process.

SETTINGS AND MODE OF OPERATION OF THE STOVE

The power of the stove can be changed in nine grades
ranging from 1 to 9. Each level of power is associated with a flow of
air that ventilates the combustion chamber, the low rate is that in 1st
grade, and the highest in 9th grade. Provision of prescribed flow-rate
is accomplished by changing the speed of rotation or the power of the
drive motor.
In order to achieve a power of the stove, it is
necessary to burn a certain amount of pellets per unit time. The
increase in power is achieved by increasing the quantity of fuel
supplied. The fuel is fed through the periodic rotation of the screw
mechanism that transports the pellets from the hopper to the combustion
chamber.
The Auger is driven by electric motor with reducer.
Operation of the engine is periodic, with two phases: stroke and pause.
The move is depending on the degree to which working stove. The power
is changed by changing the time during which work the Auger mechanism.
This program can be adjusted for an unlimited number of times on
request, with a view to optimizing the process. The experience and
knowledge of the manufacturer indicated that the optimal ratio of
capacity between the 1st and 9th grade moves from 1: 5 to 1: 6, which
in most cases is completely satisfactory. The construction of the stove
allows the receipt of greater ratio (up to about 1: 7), but it is tied
to the quality of the pellets.
The command box is located at the rear of the top
decorative plate on the stove. Its purpose is to implement the
switching on and off of the stove, start and stop the burning process,
setting up and management of all the functions, as well as servicing of
the stove.

ECONOMY, SAFETY AND SECURITY

The electronic system is designed to work with the
minimum possible cost of electricity using modern element base and
cutting-edge technical solutions. Thus is the stove adds to the energy
saving systems and apparatuses.
The electronic system is designed so that it can ensure
the trouble-free continuous work of the stove on 24 hours a day within
the heating season – 6 months.
When the network voltage operation of the stove is
suspended, if it is not equipped with a cigarette lighter and a weekly
programmer. If the network voltage is established the stove in
position. To recommence its work must be lighted again.
Dependence on the presence of mains voltage is an
advantage in terms of safety of operation. Since dropping the network
voltage circulation pump in the heating Highway stops operating if the
stove continue to work, would have created the conditions for
overheating of the water in the water jacket and repeatedly increasing
pressure due to the steam phase. In this sense, the dependence of the
network and the suspension of work in the absence of mains voltage can
be regarded as a defensive feature of the stove.