Bedienungsanleitung Ygnis Pyronox LRK-NT (Seite 41 von 48) (Englisch)

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LR, LRK, LR-NT, LRK-NT 21 - 32

We reserve the right to make changes to dimensions and construction 39 edition 30.10.2007

7. Operating conditions

7.1. Fuels

The Pyronox LR 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.

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