SAS UWG, Техническая документация для запуска

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6.2. BOILER ARRANGEMENT
Special foundation for boiler is not required, however it is recommended to put it on
concrete platform 2 cm high, but it may be also practiced to put it directly on
the fire-proof floor. Boiler’s layout should ensure easy and safe operation of
such elements, as furnace, ash box and fuel loading, and do not obstruct
cleaning operations.
The front of boiler should be distant from the opposite wall no less than 2
m, and similarly, boiler’s sidewalls no less than 0.5 m.
6.3. CONNECTING BOILER TO THE CHIMNEY
Chimney channel and connection should be performed according to the
requirements of detailed regulations being currently in force in the country of
destination (e.g. Ministry of Infrastructure Decree, as of 1 April 2002 Journal of acts
no. 75).
A boiler should be connected with smoke conduit, which is slightly rising
towards the chimney. Smoke conduit length should not exceed 0.5 m. Area of
chimney – smoke conduit connection should be precisely sealed. Area of chimney –
smoke conduit connection should be precisely sealed.
The chimney’s height and section, as well as accurateness of its construction
shall ensure obtaining required chimney draught of min. 0.12 – 0.30 mbar (see tab.
p.10, point 9).
Selection of the chimney’s height and section comparing to boiler power should be
based on detailed regulations being in force in the country of destination.
Assuming that it is not possible to achieve such parameters for chimney, and
chimney draught problems are experienced, resulting in improper boiler
performance, the gases blow-out fan, or chimney base together with built-in fan
may be applied, for supporting and stabilizing the draught. It is important for the
chimney to has its beginning at the level of boiler room floor, for the reason that
gases leaving the boiler are able to be repelled. It is also important, that in the
bottom part of chimney there is washout whole with tight closing.
In order to avoid the air back draught possibly appearing in the chimney, its height
should be above a crest of roof not less than 1.5 m. Chimney’s utility (permeability)
should be checked and confirmed by authorized chimney-sweeper at least once a
year.
PRIOR TO BOILER COMMISSIONING THE CHIMNEY SHOULD BE BASKED!
It is recommended that the flue is made of stainless steel material. If
boiler is kept with low temperatures for longer time, such a flue is mandatory.
Low temperatures in the boiler cause wet gases emission. This may be found as the
reason of wetting and corroding of brick chimneys.