3.3 Unit description
Installing the heat pump
The WSP heat pumps are equipped with an addi-
tional cooling function to ensure a comfortably cool
indoor climate in your living rooms in summer
mode when outside temperatures are high.
The weather-compensated Smart Control of the
heat pump can control the following functions:
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an unmixed heating cycle with an activatable
cooling function,
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two mixed heating cycles with an activatable
cooling function,
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a separate cooling cycle, i.e. cooling cycle
pump and changeover valve,
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changeover valve for hot water preparation,
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circulation pump, temperature- or pulse-con-
trolled (probe or pulse generator available as
accessories)
The mixing cycles are set by the specialist techni-
cian via the controller.
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Fig. 8: Unit overview
1: Smart-Control Touch controller
Heat pump operating mode
Heat pumps can work in various operating modes.
Monovalent
The heat pump the only heat generator for the
building all year round. This mode is particularly
suitable for heating plants with low supply-water
temperatures and is primarily used in combination
with brine/water and water/water heat pumps.
Monoenergetic
The heat pump has an electrical heater to handle
peak loads. The heat pump covers the majority of
the required heating capacity. Occasionally, when
outside temperatures are extremely low, an elec-
trical booster-heating system switches on as
required in order to support the air/water heat
pump.
Bivalent alternative
The heat pump provides the entire heating energy
down to a predetermined outside temperature. If
the outside temperature drops below this value, a
second heat generator switches on to support the
heat pump, which shuts down at this point. There
is a distinction to be made here between
alterna-
tive operation
with oil or gas heating and
regen-
erative operations
with solar energy or wood-fired
heating. This operating mode is possible for all
heating systems.
The switchover point depends either on the
required heating capacity or on the required inlet
temperature.
Automatic function
Brine shortage protection
This function constantly monitors the brine pres-
sure to prevent a possible brine shortage. A pres-
sure sensor switches the heat pump off when the
brine pressure falls below the limit. An error is dis-
played in the error memory until the cause of the
error is eliminated. The heat pump switches on
again automatically when the brine pressure rises
and the error message goes out.
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