Ritek UNIVERSAL RG Series, Operating Manual

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6.3. The procedure for replacing the grate
6.3.1. During the boiler’s operation, it may be necessary to replace the grates (20) with the new ones. In the
boilers of this series, the grates are rigidly fixed on the shafts with heat-resistant bolts. This work can be
carried out either through the door of the ashpit, without dismantling the heat exchanger, or on top of the
ashpit after dismantling the heat exchanger.
6.3.2. The manufacturer, at the request of the boiler’s owner, supplies repair kits for the replacement of the
grates (grates - 2 pcs, shafts - 2 pcs).
6.4. Heating system installation
6.4.1. The boiler can be used in heating systems, with both forced and natural circulation of the
heat
transfer liquid
. In a forced heating system, pumps must be equipped with a bypass line with a non-return
valve that allows water to naturally circulate for a while after an emergency power outage or pump repair.
6.4.2. When installing the boiler in a system with natural circulation, the following requirements must be
observed:
- The diameter of the flow and return pipes in the place of direct connection to the heat exchanger should
not be changed into a less diameter.
- The return water pipe must also be installed with observance of the slope towards the boiler.
- In all heating systems, the installation must be carried out in such a way that the
heat transfer liquid
is
completely drained when the system is empty. If there are separate “pockets” in the system, where the
heat
transfer liquid
can remain, the process pipe with the drain valve is welded to the bottom.
- The capacity of the expansion tank in the heating system must be at least 10% of the capacity of the
entire system.
6.4.3. It is recommended to fill the system with “soft” water that does not contain salts and other
impurities, which, being deposited on the walls of pipes and jacket of the boiler, impair heat transfer and their
efficiency, which leads to excessive fuel consumption and, ultimately, can lead to obstruction of pipes and
failure of the entire heating system.
6.4.4. After installation, it is strongly recommended to carry out hydraulic tests of the entire heating
system for its leak tightness.
6.4.5. When replacing a centralized heat supply source with an autonomous one using “” boilers, it is
necessary to get a comprehensive consultation from specialists or at the factory about the possibility of
operating your heating system with these boilers and the amount of work required to modify (adapt) it.
6.5. The boiler ignition procedure
The boiler is ignited in the following sequence:
6.5.1. Set the grate arms in a vertical position and secure them with a clamp lock.
6.5.2. Install temperature sensors (thermometers) on the supply and return pipes, as well as manometers.
Open the boiler, the pump, the heating system, and the expansion tank shut-off valves. Turn on the pump in
systems with forced circulation of heat transfer liquid; make sure that the heat transfer liquid circulates
through the system.
6.5.3. Pour about two buckets of flammable material (crumpled paper or dry coarse chips) into the boiler
bunker.
6.5.4. Load 4–5 kg of dry small wood up to 20 cm into the bunker.
6.5.5. Pour about 20 kg (2 buckets) of sorted coal with a fraction not larger than 50-70 mm.
6.5.6. Close the boiler’s lid.
6.5.7. Ignite the torch and then use the torch through the furnace door to ignite the kindling material,
poured into the grate part of the boiler through the loading bunker.
6.5.8. At the initial moment, the fume can possibly come out of the ashpit due to poor traction (warm
weather, low atmospheric pressure, etc.).