Hamworthy Melbury HE 530, Инструкция по установке и эксплуатации

Страница: 30 / 38

Melbury HE, C 530 - 3000
28
We reserve the right to make changes to dimensions and construction edition 12.2020
Hamworthy Heating Limited – Dorset BH17 ONF
7. Operating conditions
7.1. Fuels
The Melbury HE boiler is designed for operation with fuel oil EL and natural gas.
Attention: The use of other fuels such as for example biogas is only permitted with the express approval of the
manufacturer.
7.2. Combustion air
The combustion air must not have high dust concentrations.
Important: Furthermore, it must be free of halogens (chlorine and fluorine compounds). An excessive presence
of halogen in the combustion air leads to great corrosion damage. Make sure that no paints,
thinners, cleaning agents, degreasing agents, solvents, chlorine containers, etc. are stored in the
boiler room!
7.3. Filling the installation and water quality
The installation must be thoroughly rinsed before it is finally filled.
When filling for the first time and refilling, check the quality of the water in accordance with the values
recommended in chapter 4.3. Poor water quality leads to damage in heating installations from calcification and
corrosion. On the other hand, the service life, functional reliability and efficiency can be increased using
appropriately treated water.
During the filling process, the circulation pumps should be switched off and all ventilating valves opened, so that
the air in the system can completely escape. The filling process is finished when the operating pressure has
been reached.
7.4. Protection against corrosion
Normally, no corrosion problems arise if systems are properly designed and installed and are run according to
these instructions; consequently, there is no need to use chemical additives. However, if water is of poor quality
or if oxygen seeps from the air into the heating system (expansion chambers open, expansion/supply chambers
too small, plastic tubes without diffusion blocking in floor heating) damages are something which cannot be
completely excluded. If you happen to use chemical additives in your system, make sure that they are effective,
harmless and above all appropriate for the materials your system is made of. Enquire with your chemical additive
supplier.
In this case, you will need to arrange for a specialist water company to carry out annual quality checks on the
water used in the heating system in order to avoid any damage to the system.
7.5. Requirements for operation
The maximum operating pressure and the maximum temperature to be observed are listed on the type plate. The
minimum temperatures to be observed are given in chapter 4.1.
It is strictly recommended to maintain the boiler in operation during several hours after a cold start-up in order to
evaporate condensates that are inevitably formed in any boiler during cold start-up.