HDG Turbotec 50 L, Operation Manual

Page: 31 / 100

4 Planning and installation – Hydraulic connection
31
12 HDG Turbotec
13 HDG Lambda Control 1
F
UNCTIONAL DESCRIPTION OF
HYDRAULIC SYSTEM
3.0
• When the solid fuel boiler switches to heat production mode,
reload indicator H1 goes out.
• 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
(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 TSmin (which can be selected under
“
Settings
”), the reload indicator H1 lights up.
Important information on charging the buffer!
• By setting the target boiler temperature (TKS) to 85 °C, the buffer
will be charged at the same time as heat is transferred to the
heating system. This means that boiler output will only be
reduced after the buffer has been completely charged.
• By setting the target boiler temperature (TKS) to 78 °C, charging
will begin only after the heating system no longer requires the
partial load from the boiler. Charging capacity is derived by
subtracting the heat transfer load for the heating system from the
partial boiler load.
HDG
HYDRAULIC SYSTEM
3.1
WITH BUFFER TANK
,
HOT WATER TANK
AND AN ADDITIONAL OIL OR GAS BOILER
Incorporate the potential-free switching contact of the HDG Lambda
Control 1.