4.3.2 Solar - Temperatures
System menu
Solar
Boiler target temperature during solar charging
Up to this temperature the DHW tank is heated by the
solar system. If the solar panel system is equipped with an
isolating valve for switching between DHW tank and buffer
solar coil, then this parameter is responsible for switching
between both of these solar coils.
Temp differential to start collector pump
The collector pump activates when the collector
temperature exceeds the reference temperature in the
DHW tank or buffer tank by this value.
Temp difference to stop collector pump
The collector pump switches off when the difference
between the collector temperature and reference
temperature in the DHW tank or buffer tank is lower than
this value.
Maximum buffer tank bottom temperature during solar
charging
Prerequisite: Hydraulic system 12 or 13
If the sensor for the solar reference temperature in the
buffer tank exceeds the specified value, the collector pump
is switched off.
Minimum collector temperature
Minimum temperature at collector which must be reached
in order for the solar control to start.
Collector/pump protection from a collector temp.
If the measured value of the solar collector sensor
exceeds the set value, the solar collector must cool down
by 20°C within 15 minutes, otherwise the solar collector
pump stops in order to protect the pump.
Heat exchanger - buffer tank pump start delay
Prerequisite: Hydraulic system 12 or 13
Delay for switching on the pump between heat exchanger
and buffer tank.
Heat exchanger – buffer tank pump stop delay
Prerequisite: Hydraulic system 12 or 13
Delay for switching off the pump between heat exchanger
and buffer tank.
Buffer tank top solar setpoint (fast loading until this
temperature)
Prerequisite: Hydraulic system 12 or 13
When the upper sensor in the buffer tank reaches the
specified value, the solar isolating valve switches to the
lower area of the buffer tank.
Collector - buffer tank top differential
Prerequisite: Hydraulic system 12 or 13
This is the overcharge for the collector pump controller for
the top or bottom temperature in the buffer tank.
Top storage tank – secondary HE flow difference
Prerequisite: Hydraulic system 12 or 13
This parameter indicates how much lower the temperature
at the heat exchanger secondary outfeed is than the
collector temperature should be. If the difference is less
than the set value, the speed of the pump between heat
exchanger, DHW tank and storage tank is reduced.
Parameters overview
4
Solar
Service Manual Lambdatronic P 3200 for pellet boiler (4,3" Touch) | B1620121_en
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