Technical data

114 | Project planning manual for heat pumps for heating and domestic hot water preparation | 01.2012 www.dimplex.de
8.15.1 Integration of the heat pump in the heating system
8.15.1 Integration of the heat source
The heat source primary pump M11 transports the recovered en-
vironmental heat to the evaporator of the heat pump. In air-to-
water heat pumps, this task is carried out by the integrated fan.
The integration of the ground or ground water as a heat source
can be seen in the following figures.
Ground as a heat source
Fig. 8.30: Schematic representation of brine-to-water heat pumps
Every brine circuit should be
equipped with at least one iso-
lating valve for ventilating the
heat source.
Brine circuits must all be of the
same length to ensure that each
has an equal flow and abstrac-
tion capacity.
The filling and ventilation system
should be installed at the site's
highest point.
A high-performance fan must be
installed at the highest and hot-
test possible point in the brine
circuit.
The brine circulating pump of
the heat source system should
be installed outside the building
where possible and protected
from rain.
When installing inside a build-
ing, the pump should be insu-
lated with steam-resistant mate-
rial to prevent the formation of
condensation and ice. Sound in-
sulating measures may also be
necessary.
Ground water as a heat source
Legend:
Fig. 8.31: Schematic representation of water-to-water heat pumps
Two wells are required for the
withdrawal of ground water, an
“extraction well” and an “absorp-
tion well”. The absorption well
must in the direction of ground
water flow. The underwater
pump and wellheads should
have an airtight seal.
1.2 Brine-to-water heat
pump
1.3 Water-to-water heat
pump
M11 Primary pump for brine
or ground water
N1 Heat pump manager
Heating
M11
(X2-M11)
20000000
1.2
N1
30000000
M11
(X2-M11)
1.2
N1