Technical data

www.dimplex.de 01.2012 | Project planning manual for heat pumps for heating and domestic hot water preparation | 125
Integration of the heat pump in the heating system 8.15.8
8.15.8 Integration of renewable heat sources
Solar back-up for domestic hot water preparation
Fig. 8.49: Integration diagram (without safety valves) for a heat pump with solar back-up for domestic hot water preparation in
combination with a solar station (special accessory SST 25).
The SOLPU solar station offers
solar back-up for domestic hot
water preparation.
Function:
The solar controller WPM Econ
SOL adds solar control to the
existing WPM Econ Plus heat
pump manager. The solar con-
troller WPM Econ SOL controls
the circulating pump M23 in the
solar station. If there is a suffi-
ciently high temperature differ-
ence on sensor R23 and
domestic hot water cylinder R22
between solar collectors (R23 >
R22), domestic hot water prepa-
ration takes place via the solar
collectors. Domestic hot water
preparation via the heat pump
only takes place if the domestic
hot water set temperature is not
reached on sensor R3.
External supplementary heating and solar back-up for DHW preparation
Pre-configuration
Setting
Fig. 8.50: Integration diagram for mono energy heat pump operation, one heating circuit, series-connected buffer tank with ex-
ternal supplementary heating and domestic hot water preparation (hydraulics only suitable for brine-to-water or
water-to-water heat pumps)
Operating mode
electric heating
Immer-
sion
heater
in the
buffer
1st heating circuit Heating
2nd heating circuit Heating
3rd heating circuit No
Domestic hot water
yes via
sensor
Flange heater Yes
Swimming pool No
Supplementary heating
The return sensor must be
mounted in exactly the position
shown to prevent the heat pump
from switching on when the cyl-
inder is charged.
The universal buffer tank
PSW 500has a flange connec-
tion for installing the solar heat
exchanger RWT 500. A safety
temperature monitor must be
used with panel heating systems
(Chapt. 8.6.4 on page 107)
With permanent charging tem-
peratures of over 50 °C, the heat
pump must be blocked via an
additional thermostat for domes-
tic hot water and swimming pool
water preparation (ID3).
M18
(X2-K21)
E9
R3
(X3-R3)
T
R22
(X3-R22)
T
4
X
16
SOLPU
T
(X3-R23)
E1
0
.
5
R23
(X2-M23)
M23
(X2-M18)
R1
(X3-R1)
(X2-M18)
M18
T
WWM
00634054
3
(N1-N011)
M15
(X3-R5)
R5
(N1-N012/N013)
M22
MMH
T
TC
M
(F7)
(X2-K21)
E9
R3
(X3-R3)
T
R22
(X3-R22)
T
4
X
16
SOLPU
T
(X3-R23)
E1
0
.
5
R23
(X2-M23)
M23
(X2-K20)
E10.1
G
N1-ID3
>50°C
DDV
M16
(X2-M16)
R2.1
(X3-R2.1)
T
W
N1
N17.4
1