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Use the main menu
HMC300 – 6 720 813 192 (2014/10)
5.7 Adjust settings for hybrid system
Menu: Hybrid system
In a system with a hybrid system there are two different heat
sources. A heat source that utilises regenerative energy
generates heat from geothermal energy, from the air, from
biomass, or from solar energy. Heat is also supplied from a
conventional source, e.g. oil or gas.
If a hybrid system is installed in the system the following menu
is shown Hybrid system.
In this case the hybrid system consists of a heat pump and a
separate gas or oil heating source.
Depending on the actual circumstances and heating
requirements, either the heat pump or the gas/oil heating
source produces the best price-performance ratio.
Controlling the heat pump controls the actual output data of the
heat pump with the set energy price ratio and whether the heat
pump or gas/oil heating source is more beneficial from the
perspective of cost. Either the heat pump or the gas/oil heating
source is used, depending on the result.
In the menu Hybrid system > Energy:price ratio the energy
ratio between electric power and solid fuel can be regularly
adjusted to the actual price structure.
The cost ratio is calculated according to the following formula:
e.g.
• Electricity costs: 24 cent/kWh
• Gas/oil costs: 8 cent/kWh
This ratio must be given via the menu Hybrid system >
Energy:price ratio.
The setting of the price ratio is made by dividing the price of
electricity with gas
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