HDG Turbotec 50 L, Руководство по эксплуатации

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4 Planning and installation – Hydraulic connection
33
• When the boiler temperature reaches 50 ?, the M1 primary pump
switches on. The return temperature of the solid fuel burner is
raised via return valve Y1.
• When the boiler temperature reaches 55 ?, return valve Y1 is
opened (return temperature continues to be raised) and heat is
transferred to the upper part of the buffer tank.
• When the boiler temperature reaches 72 ?, the buffer tank is
switched on via buffer charging valve Y2 and charged
accordingly, depending on the heat intake capacity and the
preset target temperature for the boiler.
• When all the fuel has been consumed, heat production is switched
off. Depending on the temperature differential (boiler
temperature and buffer temperature), the remaining heat in the
boiler is transferred to the buffer tank. After the boiler
temperature has dropped below the preset minimum value TK
min (which can be selected under “
Settings
”), the extraction of
residual heat from the boiler is stopped.
• The stored heat can now be transferred to the heating system
and/or the hot water tank as needed.
• When the buffer tank temperature has dropped below the preset
minimum value TS min, the change-over contact is triggered. The
ÖKU 3.1 is activated. Change-over valve Y3 is closed and the buffer
tank is bypassed in the heating circuit. Boiler sensor KF2 in the
buffer tank is bypassed and boiler sensor KF 1 in the oil boiler is
switched on. The oil/gas burner phase is patched through and the
oil/gas burner takes over the production of heat. The reload signal
H1 lights up.