Technical data

www.dimplex.de 01.2012 | Project planning manual for heat pumps for heating and domestic hot water preparation | 129
Integration of the heat pump in the heating system 8.15.11
8.15.11 Integration of split air-to-water heat pumps
Mono energy operation
Fig. 8.56: Integration diagram for monovalent heat pump operation of a split air-to-water heat pump with one heating circuit and
domestic hot water preparation (regulation based on outside temperature)
With all split air-to-water heat
pumps, the indoor unit contains
an electric heating element for
supplementary heating and a
circulating pump. The heating
element supports the heat pump
when needed. Via the three-way
valve, the circulating pump ei-
ther acts as a heat circulating
pump or a domestic hot water
circulating pump.
The circulating pump M13 in-
stalled in the heating circuit is an
electronically regulated circulat-
ing pump.
(R1)
N1
MAG
(N1-05/06/GND)
E9
(N1-01/02)
R3
T
M
T
Y13
1.7
(N1-03/04)
(E10.1)
M25
EB KPV
M13
p
WWM
TC
SMF
PWS
332
Bivalent operation
Fig. 8.57: Integration diagram for bivalent heat pump operation of a split air-to-water heat pump with one heating circuit and an
existing boiler (oil/gas)
The system marked as an exist-
ing system is controlled via the
existing boiler controller. The
maximum inlet temperature in
the heat pump must be re-
stricted to 60°C.(e.g. with the
thermostat shown).
If the bivalent alternative operat-
ing mode is required, the heat
pump can be switched off via the
thermostat shown if the temper-
ature is exceeded. The biva-
lence point of the heat pump
must be set to -15 °C to prevent
the installed pipe heater from
switching on. The heating curve
of the heat pump must also be
set so that there is a higher set
temperature above the biva-
lence point than with the boiler
controller. Domestic hot water
preparation via the heat pump
and boiler is not possible with
this integration.
(R1)
N1
MAG
T
1.7
(E10.1)
M25
T
Öl / Gas
SMF
M
3
Bestand
-
K -