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USE
5
USE
5.1
GENERAL
The Worcester Greenstore series is equipped with the latest generation
low energy circulation pumps on both the cold and hot sides. Low energy
circulation pumps are being introduced in line with future European
legislation. They are designed to improve the system efficiency.
When purchasing the equipment, the installation engineer must make an
energy estimate and assess the degree of energy coverage for the heat
pump system in line with current guide lines.
Greenstore Combi/System is a series of heat pumps that use stored
solar energy in order to provide water-based heating and hot water.
1
Fig. 1 Stored solar energy
[1]
Rock heat
[2]
Soil heat
[3]
Lake heat
Greenstore 6-11 Combi are heat pumps with integrated domestic hot
water cylinders.
Greenstore 6-11 System are heat pumps designed to be supplemented
with external domestic hot water cylinders.
Once the heat pump has been installed and started, there are a number
of points that should be checked regularly. This may concern an alarm
triggering or performing basic maintenance actions. If the problem is
repeated, you should contact your installer.
5.2
HEAT PUMP FUNCTION
The heat pump consists of four main parts:
• Evaporator
Evaporates the refrigerant to gas and at the same time transfers the
heat from the collector to the refrigerant circuit.
• Condenser
Condenses the gas to fluid again and transfers the heat to the heating
system.
• Expansion valve
Lowers the pressure of the refrigerant.
• Compressor
Increases the pressure of the refrigerant.
These four main parts are linked in three circuits. A refrigerant circulates
in the heat pump, which in some parts of the circuit is in a liquid state and
in other parts in a gas state.
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2
3
6 720 614 540-01.2I
6 720 802 172 (2012/06)
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