Technical data
102 | Project planning manual for heat pumps for heating and domestic hot water preparation | 01.2012 www.dimplex.de
8.5 Integration of the heat pump in the heating system
Fig. 8.15: Pressure drop diagram MMH 50
Table 8.4: Dual differential pressureless manifold (DDV) for the connection of
a mixed heating circuit, external supplementary heating and op-
tional domestic hot water preparation.
Fig. 8.16: Integration of the dual differential pressureless manifold for heating
operation and domestic hot water preparation
NOTE
The DDV 50 is included as an accessory with NTC-2 (for WPM 2004 and
WPM 2006plus) and NTC-10 (for WPM 200 and WPM Econ Plus) return
temperature sensors.
NOTE
Circulating pump type UPE 120-32 is available as an accessory as a pump
for the main heat pump circuit.
NOTE
The installation height of the DDV 50 with a pump inside micrometer of
180 mm is around 0.8 m.
8.5 Hydro tower
The hydro tower HWK 332 delivers heat pump hydraulics the
most limited of spaces. It consists of a 100 litre buffer tank and a
300 litre tank with pre-assembled heat pump hydraulics. The hy-
draulics including components and pump modules for an un-
mixed heating circuit with one circulating pump each in the gen-
erator and consumer circuit are
installed in a compact and space-saving hydro tower. The hydro
tower is connected to the heat pump via two hydraulic connecting
cables and one electrical connecting cable. All electrical compo-
nents such as circulating pumps, sensors and heating element
come pre-installed.
8.5.1 General properties
Benefits of the hydro tower:
Low installation effort
All components easily accessible
Integrated 100l buffer tank reduces operating cycles of the
heat pump, thus increasing the efficiency of the system
Integrated 300l domestic hot water cylinder with built-in
flange heater (1.5 kW) for thermal disinfection
The stepless adjustable operation of the circulating pump in
the heating circuit permits adjustment of the output accord-
ing to need.
Switchable pipe heater (2 / 4 / 6 kW) for supplementary heat-
ing
Optional immersion heater up to 6 kW
Ready-to-connect, contains all essential components, i.e.
pumps, shut-offs, safety devices and heat pump man-
ager(HWK 332 Econ)
Hydraulic components
Buffer tank, 100 litres
300 litre domestic hot water cylinder
Dual differential pressureless manifold
Safety equipment:
Safety valve, start-to-leak pressure 2.5 bar
Easy connection of the required expansion vessel (not in-
cluded in scope of delivery).
1
Connections heating
2" external thread
2
Connections
heat pump
2" external thread
3
Connections
buffer tank
1 1/4" external thread
4 KFE ball valve
5
Vitaulic clamp
(four in total)
6 Pressure gauge
7 Safety valve 3 bar
8
T-joint for
MAG connection
9
Sealing plugs for
check valve
10 Sealing plugs
11
Immersion sleeve for
return sensor
0,30
0,40
0,50
0,60
0,70
0,80
0,00
0,10
0,20
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Pressure drop [bar]
Volume ow pressure drop diagram
Pump assembly FL-MK DN 50 Art.-Nr.: 66548 EA KKW
Volume ow [m3/h]
1
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