Mareli Systems CB 35, Руководство по сборке и эксплуатации

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Mareli Systems
The point of irrigation of the burning products is at 65º С and for this reason the products temperature on the
heating surfaces must not drop below 65º С
If in the fuel reserve chamber condensation is formed, that indicates the presence of excessively high water
content in the fuel (humid fuel). In such cases condensation may occur even at boiler water temperatures
above 65º С
The tar is formed in similar circumstances (low output, low temperature) and also in wrong combustion ad-
justment – too little oxygen. The tar accumulates on the bottom of the gas paths and impedes the removal of
the cleaning lid.
The tar can be cleaned in warm state only. For the purpose do as follows:
• It is best to heat up the boiler with some soft wood.
• When a 90º С temperature is reached close all valves of the heating components.
• Pull out the cleaning lid and hit several times with hammer.
• Remove the tar from the floor and the heating surfaces with a cleaning scoop.
7. Inspection and maintenance of the heating boiler
Why regular maintenance is important?
These are the reasons why a regular maintenance of the heating installations is required:
• To keep a high energy conversion efficiency and to ensure an economic functioning of the heating in-
stallation (low fuel consumption);
• Ensuring a high operational safety;
• Ensuring a high ecological combustion;
Offer Your client an annual contract for revision and maintenance. Use original spare parts only.
Cleaning the heating installation
• Check the heating boiler and clean if needed.
• Check and clean the exhaust gas pipe.
Heating installation pressure check
The pointer of the manometer must be above the red one. The red pointer of the manometer must be set to the
required working pressure.
Info: Set a working pressure of at least 1 bar.
• Check the working pressure of the heating installation. If the manometer pointer is under the red point-
er, then the working pressure is too low. Water must be added.
Instruction!!! Installation malfunctions due to frequent water adding.
When a frequent water addition is performed, depending on the condition of the water, the heating installa-
tion can be damaged due to corrosion and limestone accumulation.
• Ensure that the heating installation is air tight;
• Check the insulation of the heating installation and the capability of the enlarging pot;
• Installation malfunctions due to tension in the material from to temperature differences.
• Fill the heating installation in a cold state only (the incoming temperature must not be exceeding 40º С).
• Add water through the loading and unloading valve.
• Air tight the heating installation.
• Check the working pressure again.
8. Thermal safety of the flow check
The thermal safety guard of the flow ensures a safe functioning of the heating boiler in case of system failure
if the system cannot lead the heat of the heating boiler out by itself. A malfunction may occur, for example,
in case of a frozen heating system, water circulation failure etc. For proper functioning of the thermal safety
guard a sufficient pressure and cooling water are required. Pressure of at least 2 bar and a 11 l/min water debit
is required.
• Check the thermostatic valve of the safety heat exchanger annually according to the manufacturer’s data.
If the check was not successful – the thermostatic valve doesn’t open the flow of the cooling water, or the per-
meability of the thermostatic valve is too low – you must replace the thermostatic valve.
Troubleshooting
In case of malfunction attempt repair or inform the heating specialist. As a user of the installation you can only
attempt maintenance activities like changing parts of the grills, the fire-clay bricks or the insulation tape. Use
original spare parts only.