Viadrus VIADRUS K 5, Руководство по эксплуатации и установке

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7.2 Gas connection
Before connecting the gas pipeline to the boiler, the gas pipeline has to be tested and revised. After connecting the
boiler to the gas pipeline, it is necessary to test all gas joints by a gas detector or with using of foam solution. The
input pressure of natural gas is about 2 kPa (20 mbar).
During checking tightness of the gas distribution and connecting the valve, it is necessary to be particular
about not wetting the coil of the gas valve!
7.3 Connection to the electric power supply network
The boiler is equipped with a flexible mains connection and a fork. According to EN 60 335–1 ed. 3,
EN 1856-1, the boiler has to be place so that the fork is accessible.
A socket 230 V/50 Hz has to be placed near the boiler on the distance up to 1,5 m. The socket has to comply with
the legal regulations and has to be revised.
7.4 Condensate exhaust
For the purpose of condensate exhausting, a inbuilt siphon is used, to which an overflow into the sewer has to be
connected. Before commissioning the boiler, it is necessary to check that condensate is exhausted. The PVC
discharge pipe diameter is Ø 16 mm.
This condensate has pH 4 and it can be discharged in the sewer without subsequent treatment. Boiler condensate
exhaust has to be performed so that it doesn't prevent from smooth drain of condensate. The condensate exhaust
system, if installed, mustn't be modified or blocked.
7.5 Fume-extraction system
According to the method of flue gases exhaust and supply of combustion air, the boiler is in design C. It means a
closed consumer, which uses combustion air from the external space or from a common well, and from which the
flue gases are exhausted into the external space or into the common well. The well is a constructional part of the
building, for example, a chimney, etc. The combustion chamber and the flue channel of the consumer are gas-
tightly separated from the space, in which the consumer is located.
The boiler is supplied in a standard design with a flange for air. The fume-extraction system of the boiler is not a
part of the boiler supply. It is necessary to keep an incline of 3° to the boiler. The pressure loss for fume-extraction
mustn't exceed 150 Pa. The total pressure loss is a sum of separate losses of the parts described in this chapter.
The boiler has to be only installed with a wind-protective device, which complies with requirements of EN 1856 -1
(see the annex N). It is necessary to use a concentrated small chimney for flue gases exhaust through the roof.
The boiler has to be installed with the needed accessories (a pipeline for supply of combustion air and for
exhausting flue gases).
Fig. № . 9 Possibilities of connection of flue gases exhaust and air supply