Technical data
126 | Project planning manual for heat pumps for heating and domestic hot water preparation | 01.2012 www.dimplex.de
8.15.8 Integration of the heat pump in the heating system
Renewable back-up for heating and domestic hot water preparation
Pre-configuration
Setting
Fig. 8.51: Integration diagram for bivalent renewable heat pump operation of a solid fuel boiler with renewable cylinder, a heat-
ing circuit with buffer tank connected in series and domestic hot water preparation
Operating mode
electric heating
Solar control
bivalent
renewa-
ble
immer-
sion
heater
in the
buffer
Yes
1st heating circuit Heating
2nd heating circuit No
Domestic hot water
Yes
with a
sensor
Flange heater Yes
Swimming pool No
The renewable cylinder (3.1) is
loaded by either the solid fuel
boiler or by additional heat gen-
erators (e.g. solar , see Solar
thermal energy manual). The
buffer volume must be dimen-
sioned according to the informa-
tion from the solid fuel boiler
manufacturer.
With a sufficiently high tempera-
ture level in the renewable cylin-
der the heat pump is blocked
and the energy from the cylinder
is used for heating requests, do-
mestic hot water requirements
and swimming pool needs.
Renewable back-up for heating and domestic hot water preparation
Pre-configuration
Setting
Fig. 8.52: Integration diagram for mono energy heat pump operation with PWD 750 combo tank for external supplementary
heating and domestic hot water preparation.
Operating mode
Mono
energy
Heat
pump+
electric
heating
1st heating circuit Heating
2nd heating circuit Heating
3rd heating circuit No
Domestic hot water
Yes
with a
sensor
Flange heater Yes
Swimming pool No
A separating plate integrated
into the combo tank in combina-
tion with a 3-way valve prevents
mixing losses between the heat-
ing and the domestic hot water
zones. With external charging,
heat riser pipes distribute the ex-
ternal energy to the supplemen-
tary heating system and the do-
mestic hot water preparation on
the basis of the temperature.
A flange connection enables the
solarheat exchanger RWT 750
to be installed.
The heating circuit pump M15
supplies the flow around the re-
turn sensor and prevents the
heat pump from switching on
when the system temperatures
are too high.
00431024
DDV
(X3-R1)
R1
T
R13
(X3-R13)
T
E10.3
T
T
G
X
(N1-N07/N08)
M21
3.1
T
4
WWM
TC
M
W
(F7)
3
(X2-K20)
E10.1
(X3-2.1)
R2.1
(X2-M13)
M13
(X2-M18)
M18
M16
(X2-M16)
(X2-K21)
E9
R3
(X3-R3)
R22
(X3-R22)
T
SOLPU
T
(X3-R23)
E1
0
.
5
R23
(X2-M23)
M23
N1
N17.4
1
R1
(X3-R1)
E10.1
(X2-K20)
E9
(X2-K21)
T
00634044
TC
R3
(X3-R3)
T
Y8
[AB]
[A]
[B]
[AB]
DDV
T
(X3-2.1)
R2.1
M16
(X2-M16)
[B]
[A]
(X2-M18)
Y8
(X2-M18)
T
SOLPU
T
(X3-R23)
E1
0
.
5
R23
(X2-M23)
M23
R22
(X3-R22)
MMH
T
M
W
(F7)
(N1-N011)
M15
(X3-R5)
R5
(N1-N012/N013)
M22
M
M
PWD
N1
N17.4
1