Gebwell Aries 12, Installation And Commissioning Manual

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10 Aries Installation and Commissioning manual
system, which distributes it to heat the building and the
domestic hot water with the help of a change-over valve.
The refrigerant condenses into a liquid state in the
condenser as it loses heat energy.
The pressure of the refrigerant remains high as the liquid
refrigerant is transferred to the expansion valve. The
pressure of the refrigerant decreases in the expansion
valve, and the temperature drops to approximately -10°C.
The expansion valve injects the correct amount of
refrigerant into the evaporator, where the heat energy
transferred from the brine causes the refrigerant to
evaporate.
Figure: Functional description
1: Heat pump
2: Condenser
3: Compressor
4: Evaporator
5: Change-over valve
6: Water circulation pump, heating/domestic hot water
charge
7: Expansion valve
9: Collection pump
9: Heat collection pipe, ground loop
10: Heat collection pipe, bored well
11: Underfloor heating
12: Radiator heating
13: Hot water tank
2.4 Heating functions
Domestic hot water
The heat pump outputs domestic hot water based on the
tank’s operational measurement sensor (B3). The
temperature of domestic hot water can be selected from
the options,
Eco , Normal or Comfort . This selection
affects the amount of hot domestic hot water. When
Comfort is selected, the heat pump also uses an electric
heater to heat domestic hot water.
Heating
The heat pump outputs heating water directly into the
building’s heating network. Automatic regulation
determines the set point for the supply water from the
heating circuit based on the set heating curve and the
outdoor temperature measurement. The controller uses the
set value for the supply water to determine the set point
for the heat pump, and the frequency-controlled
compressor uses this value to set itself to the correct
rotation speed in order to keep the temperature of the
supply water at the set point. The room temperature sensor
also affects the set point.
In order for the heat pump to operate at maximum
efficiency, the heating system and the collector must be
under ideal conditions. The difference between the
heating system’s output and return temperatures must be
5–8°C, and the difference between the collector’s output
and return temperatures must be 3–4°C. If the temperature
differences deviate from these values, the efficiency will
decrease, along with the savings. The heat pump’s
controller ensures the correct temperature difference for
the heat supply and the collection pump.
Factory settings:
Heating temperature difference: 5°C
Domestic hot water preparation temperature difference:
8°C
Collector temperature difference: 3°C
2.5 Tips for making savings
The heat pump is intended to generate the desired heat and
domestic hot water. The system attempts to meet these
desires by all available means within the limits of the set
values.
Important factors affecting energy consumption are the
indoor temperature, the domestic hot water consumption,
the temperature of the domestic hot water, the quality of
the house’s insulation, and the desired level of comfort.
Keep the aforementioned factors in mind when changing
the device’s settings.
IMPORTANT:
Floor heating and radiator thermostats can have a negative
impact on energy consumption. They reduce the flow rate
in the heating system, and the heat pump compensates for
this by raising the temperature of the network. This affects
the device’s operation by causing more electrical energy
to be consumed. Thermostats are only intended for
adjustments due to “free heat” (from the sun, people,
fireplaces, etc.)