6
5. gas flue thermometer
18. bunker
6. air vent valve
19. gas flues
7. safety valve
20. grate
8. working environment man thermometer
21. ashpit
9. bunker lid
22. boiler support
10. slide gate
23. combustion zone
11. gas flue pipe
24. nozzle
12. handle of the upper part of the bunker removal
25. supply nozzle
13. upper removable part of the bunker
5.1. The boiler is a steel gas heat exchanger (14) of cylindrical shape with an internal bunker (18)
for solid fuel and a rectangular ashpit (21) with grates (20). All parts of the boiler are welded of 5
mm thick sheet steel. To increase the product service life, all steel parts of the boiler that are subject
to strong heating are protected by a water jacket.
5.2. Fuel is loaded into the loading bunker (13) from the top after removing the bunker lid (9).
Due to its own weight, the fuel enters through the bunker into the combustion zone with subsequent
heat transfer to the heat transfer liquid inside the heat transfer zone (23). Flue gases escape through
the boiler gas flue (19). The heat transfer liquid enters through the nozzle (24), heats up in the heat
transfer zone and enters the heating system through the supply nozzle (25). The remains of the
burned fuel in the form of ash enter the ashpit (21) through the grates (20) and are periodically
removed through the ashpit door (1). Adjusting the air supply to the combustion zone (23) can be
carried out through the air regulator (2) for the boiler’s ignition, and then the air regulator (2) closes
and the upper air regulator (4) opens for the upper combustion mode of the fuel.
5.3. Regular removal of ash and fine fraction rock (up to 16 mm) is carried out on the operating
boiler by “shaking” grates (20) fixed on rotating shafts using two arms (17) located on the front part
of the ashpit. Ash and unburned particles of coal pour down into the ashpit (20), from where, as it is
filled, they are removed with a shovel or a scraper. Cleaning the boiler grates from larger pieces of
rock, unburned residues, etc., is made through the furnace revision door (3).
5.4. During boiler’s operation, the loading bunker must be closed with a lid (9).
6. Rules of installation and operation
Installation of a boiler or a boiler plant on the basis of several “UNIVERSAL RG” boilers, as well
as of a heating system, is recommended to be carried out by a specialized installation organization
having experience in heating system installation. Installation is carried out by any means of
mechanization that allow working in specific conditions of the boiler plant.
Installation is carried out in accordance with the boiler plant project (recommended) and ensuring
the layout dimensions specified in the “Rules for arrangement and safe operation of steam boilers 10-
574-03”, put into effect on 06/18/2003. When installing and operating the boiler, follow the technical
documentation:
- EN 303-5: 2012;
- the present instruction and the boiler’s passport;
- “Rules for arrangement and safe operation of steam boilers with a steam pressure of no more
than 3 kgf/cm
2
, water boilers and water heaters with the water heating temperature not higher than
85°C”;
- “Rules for arrangement and safe operation of steam and hot water pipelines”;
- Building Codes and Regulations 3.05.05 “Technological equipment and pipelines”;
- Building Codes and Regulations 3.01.01 “Organization of building production”;
- Departmental Building Codes 217 “Preparation and organization of construction and installation
work for the construction of boiler plants”;
Summary of Contents for UNIVERSAL RG Series
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