HDG Turbotec 50 L, Руководство по эксплуатации

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4 Planning and installation – Hydraulic connection
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When rounded up, the resulting volume should be at least 4500
litres.
R
ETURN FLOW INCREASE
Operating temperatures which are too low significantly shorten the
service life of the boiler. Water vapour contained in the flue gas could
be released in the form of condensation if the temperature drops
below the dew point (approx. 50 - 55 °C), especially in the area
around the water-cooled heat-exchanger surfaces. This
condensation, in combination with combustion residue, can lead to
corrosion.
For these reasons, a return temperature control must be installed for
the heating system HDG Turbotec with HDG Lambda Control 1. The
return temperature control causes the water from the boiler return to
be mixed with the water from the boiler advance until the minimum
return temperature has been reached.
The minimum return temperature is listed in chapter “3 Mode of
operation”, section “3.3 Technical data”.
The return temperature control must be installed according to the
specifications of HDG Bavaria.
4.4 Hydraulic connection
There are hydraulic solutions for every application. Here you can see
just two examples. Your local HDG plant representative will be happy
to help you.
For a more exact calculation of the buffer tank volume, refer to DIN
EN 303-5 “Boilers for solid fuels, manually and automatically fed
firings, nominal thermal output up to 300 kW.”