Technical data
100 | Project planning manual for heat pumps for heating and domestic hot water preparation | 01.2012 www.dimplex.de
8.4.2 Integration of the heat pump in the heating system
8.4.2 Compact manifold KPV 25 with extension module EB KPV
The compact manifold KPV 25 can be turned into a differential
pressureless manifold through the use of the extension module
EB KPV. The generator and consumer circuits are hydraulically
isolated and they each contain a circulating pump.
NOTE
The use of the compact manifold KPV 25 with extension module EB KPV
is recommended for heat pumps with a heating water flow rate up to max.
2.0 m
3
/h.
8.4.3 Dual differential pressureless manifold DDV
The dual differential pressureless manifold (DDV) functions as
an interface between the heat pump, the heating distribution sys-
tem, the buffer tank and, in some cases, the domestic hot water
cylinder.
A compact system is used to simplify the installation process, so
that a lot of different components do not have to be installed indi-
vidually.
Three different versions of the dual differential pressureless
manifold are available as accessories:
DDV 25 (recommended up to 2.0 m³/h)
DDV 32 (recommended up to 2.5 m³/h)
DDV 50 (recommended up to 7.5 m³/h)
8.4.3.1 Dual differential pressureless manifold DDV 25 and DDV 32
Fig. 8.9: Dual differential pressureless manifold (DDV) for the connection of
a mixed heating circuit, external supplementary heating and op-
tional domestic hot water preparation.
Fig. 8.10: Integration of the dual differential pressureless manifold for heating
operation and domestic hot water preparation
NOTE
The installation length of the DDV is approx. 1m incl. pumps!
NOTE
The DDV 25 and DDV 32 are included as accessories with NTC-2 (for WPM
2004 and WPM 2006plus) and NTC-10 (for WPM 200 and WPM Econ Plus)
return temperature sensors.
1
Heating connections
1 1/2" internal thread
2
Heat pump connections
1 1/4" external thread
4
Buffer tank connections
1 1/4" internal thread
5
Domestic hot water cylinder
connections 1 1/4" external
thread
7 Pressure gauge
8
Safety valve 3/4" internal
thread
9
T-joint for mounting
the expansion vessel
10 Check valve
11
Immersion sleeve for
Return sensor
12 Insulation
DDV 25 DDV 32
3
Auxiliary circulating
pump/
main circuit heat
circulating pump
1" external thread
Auxiliary circulating
pump/
main circuit heat
circulating pump
1 1/4" external thread
6 Isolation valve 1" Isolation valve 1 1/4"
6.1
Isolation valve 1" with
check valve
Isolation valve 1 1/4" with
check valve
13 Double nipples 1" Double nipples 1 1/4"
Maximum installation
length with pump (inside
micrometer 180) 96cm
Maximum installation
length with pump (inside
micrometer 180) 98cm
''9
8383
5NMIXEDHEATINGCIRCUIT
-IXEDHEATINGCIRCUIT
"UFFERTANK
$OMESTICHOT
WATERCYLINDERS
(EATPUMP