Heating control - user manual
www.solarcontrols.cz
Instructions for the installation and setup
of the device
Page 33 of 58
1.
When the outdoor unit of the heat pump is used, it is equal to the “Input – temperature
bottom” sensor because it is necessary to maintain the low temperature of the return
refrigerant for the correct functioning of the heat pump.
2.
When the solid fuel boiler or the gas boiler are used, it is equal to the “Input – temperature
top” sensor because the heating water is the hottest in the top part of the tank if the sources
are connected correctly in the tank.
3.
When the outdoor unit of the heat pump is used together with the solid fuel boiler or the gas
boiler, it is equal to the “Input – temperature bottom” sensor and we must not choose a too
high temperature limit for the solid fuel (usually max. 70°C). The selection of this limit also
depends on the power of the circulation pump of the boiler and the size of the storage tank
so that the top part of the tank will not be overheated.
“Current cool down limit” – it shows the current temperature limit for cooling down. If the circulation
pump of the solid fuel boiler is running, the temperature limit for solid fuel is applicable; otherwise the
limit for heat pumps is set if the heat pump is switched on.
“Cool down target” – it shows the target of cooling down the storage tank:
1.
“None” – cooling down is switched off.
2.
“Heating” – cooling down is directed to the heating. Following a cool down request the
circulation pumps of all active heating circuits will be switched on.
3.
“Pool” – cooling down is directed to the pool. Following a cool down request the circulation
pump of the pool heating circuit and the circulation pump of the pool water will be switched
on.
4.
“Auto” – cooling down is directed either to the heating circuits or to the pool. The cool down
target is determined according to the outside temperature and the “Upper limit for cool
down to heating (auto mode)” item. If the outside temperature is not measured, the cool
down target is always the heating circuit.
Important: Apart from the given working modes of cooling down, emergency cooling down is
always active. It switches on if any of the measured temperatures of the heating water in the
tank exceeds 90°C. Emergency cooling down is always directed into the heating circuits of which
at least one must be activated and functional!
“Cool down limit for solid fuels” – it shows the temperature limit for cooling down the storage tank in
the case of heating by a solid fuel boiler.
“Cool down limit for heat pumps” – it shows the temperature limit for cooling down the storage tank
in the case of heating by a heat pump.
“Upper limit for cool down to heating (auto mode)” – it shows the upper limit of the outside
temperature for cooling down to heating in the automatic cooling-down mode of the tank. If this limit
is exceeded, cooling down proceeds to the pool.
STATUS DUPLICATE BLOCK
This control block is very simple and it enables an output to switch on only on the basis of the status of another
digital input or output. It will be useful when we need to adjust the switching logic of other control blocks – e.g.
when we need to switch on the power supply circuit of PWM-controlled circulation pumps or when we need to
connect a bivalent source (gas boiler) directly to a thermostat contact in the case of a heat pump shutdown.
Description of configuration and status elements:
“Conditional status” – a digital input or output which is conditional for switching on of an output.
“Output – conditioned” – an output which will be switched on after the condition for its switching on
has been met.
