BENEKOV K14, Руководство по эксплуатации и установке

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4. Boiler description
4.1. Construction of the boiler
The boiler design meets the requirements of:
EN 303-5: 2013 - Boilers for central heating - Part 5: Boilers for central heating for solid fuels, with
manual or automatic delivery, rated thermal outputs up to and including 500 kW - Terminology,
requirements, testing and marking.
The main part of the boiler is a boiler body welded from steel boiler plates. All parts of the boiler body
at the interface flue gas/heating water are made of 5 mm thick sheet metal. The combustion chamber
with a burner is at the front part of the boiler body, the 3-level plate fin exchanger is at the back of the
boiler body. This is the critical point of heat transfer between the flue gases and the heating water. The
side walls of the combustion chamber of the boiler body are protected by ceramic plates which regulate
the flow of the flue gases and assist in perfect combustion.
On the upper wall of the boiler body in the front part is a hollow where the heating water temperature
sensor and the emergency thermostat sensor are located.
The burner is attached to the side wall of the boiler body. Its rotary part (the furnace), in which the
combustion itself takes place, is made of heat-resistant stainless steel. Other burner elements are
galvanized or painted for protection.
Under the burner in the boiler there is an ash drawer.
The fuel store is next to the boiler. The fuel is delivered from here via the stainless feeder upwards and
falls through the overflow (flexible hose) into the burner. Depending on the position of the fuel store in
relation to the boiler body, the boiler is manufactured in two versions:
•
right version
– the fuel store is to the right of the boiler body when viewed from the front
•
left version
– the fuel store is to the right of the boiler body when viewed from the front
The burner fan is integrated into the burner assembly. The amount of combustion air is regulated by
the boiler programmer.
The heating water inlet and outlet for connection to the heating system are located at the back of the
boiler and are made of two outlets with G 1" internal thread. The outlet with G 1/2 " thread at the
bottom on the right is for installation of the drain valve. There is an exhaust pipe to discharge the flue
gases into the chimney at the rear of the boiler at the top.
The boiler body, its lid and door are insulated with harmless insulation which reduces heat loss to the
surrounding area.
The steel cladding is colour-treated by high-quality powder coating.