System description
2
Principle of operation
BWB-SS DC series consists of a heat pump, water heater,
electrical module, circulation pumps and a control sys-
tem. BWB-SS DC series is connected to the collector and
heating medium circuits.
The heat from the heat source (rock, soil, lake) is taken
up via a closed collector system in which a mixture of
water and antifreeze circulates. Groundwater can also
be used as a heat source, but this requires an inter-
vening heat exchanger.
The brine emits its heat to the refrigerant in the heat
pump’s evaporator. It then vaporises and is com-
pressed in the compressor. The refrigerant, the tem-
perature of which has now been raised, is passed to
the condenser where it gives off its energy to the heat-
ing medium circuit and, if necessary, to the water
heater. After the condenser there is a built-in electrical
module which cuts in if there is a high demand.
The heating medium side and
the hot water side must be fit-
ted with the necessary safety
equipment in accordance with
the applicable regulations.
Expansion
vessel
Condenser
Compressor
Expansion
valve
Heating
medium
pump
Heating
medium
return
Heating
medium
flow
Three
-
way
valve
CW
HW
Electrical
auxiliary
heater
Heating
flow
Heating
return
(VB),
(VB),
Water Tank
Water Tank cycle water inlet
Water Tank cycle
water return
Outdoor unit
Gas valve
Liquid
valve
