Demir Dokum HK 50 M Service Bulletin
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HK 50 M – HK 10M – HK 100S SERVICE BULLETIN7.9. WASTE GAS DISCHARGE AND COMBUSTION AIR SUPPLYWaste gas installation and flue connection should be made according to the standards and rules applied bygas companies.In applications over 50kW, in the systems connected to the waste gas flue with collector, for each heatingunit it is necessary to use the waste gas flue cover recommended by DD.The waste gas system must be rigid, mechanical resistant to temperature and resistant to the condense.If the waste gas system recommended by DD is used, the collector and flue elements are manufacturedfrom PP material with CE certificate. Flue system cannot be plastic + stainless.In applications where leakage check has not been carried out in the valve and fittings projected byDD in the flue system, the (o-ring) has not been used in the connections, DD will not be responsiblefor the dangers that may occur. Responsibility belongs to the firm that installs the flue.A separate isolation is also recommended to minimize the risk of waste gas leaking from the waste gassystem. However, the waste gas system, which is recommended once a year, should be renewed every timeafter the cleaning process of the cleaning gap piece used to access the system.In annual periodic cleaning, cleaning of the waste gas system should be reported to the final consumer.7.9.1. Maximum length of the flue pipe and cautionsIf the flue system is made with one pipe (50 kW) from the heating unit from every device, for the Fluepipe of 50 mm 30 m flue is used, but for each 900 bend, 2m flue length should be deducted.At the entrance of the flue (A condense siphon must be connected from horizontal to vertical and thissiphon should be connected to the sewer with plastic hose.)The flue outlet and the fresh air suction dimensions on the device are given in the figure 7.23 below. Itis possible to receive the combustion air from inside the device.The waste gas system for two 50 kW with different flue outlets is given in figure 7.24Service Administration 94 03/2010 |
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