Hw Hp Operation; "Heat Pump" Switch; "Heating Element" Switch - Dimplex BWP 30 HLW Montage- Und Gebrauchsanweisung

6.2 HW HP Operation

Control panel
Temperature indicator
The thermometer sensor (analogue distance thermometer
with tendency indicator) measures the hot-water tempera-
ture in the upper part of the hot-water cylinder. The indicator
is located on the control panel.
1 "Heat Exchanger" switch
The switch position "I" allows a second heat generator to be connected

2 "Heating Element" switch

When the switch is in "I" position, the heating element is permanently switched
on. In the " " position, the heating element switches into automatic operation

3 "Heat Pump" switch

→
Switch position "O" heat pump "OFF",
→
in switch position " " heat pump "ON"
4 Temperature indicator (see above)
5 "Hot-Water Temperature" rotary controller
Hot-water temperature switch (set-value generator)
→
Left-hand stop min. temperature
→
Right-hand stop max. temperature
1. The illustration shows the HW HP control panel with internal heat exchanger.
The "Heat Exchanger" switch is not required for HW HP without internal heat
exchanger.
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Hot-water temperature controller (rotary controller)
The rotary button is used to set the desired hot-water tempera-
ture. If the cylinder temperature is lower than the set hot-water
temperature, the heat pump is switched on (if the heat pump
switch is in the "Heat Pump Operation ON" position).
The maximum hot-water temperature that can be attained with
the heat pump is 60 °C ±1.5 K. The standard heating element
can be used if higher temperatures are required.
Notes on economical use of energy:
To achieve a high COP with the integrated heat pump while
cutting water level losses, the HW HP should normally not
be operated at a hot-water temperature of more than 45 °C
(see illustration).
Only set the temperature controller to higher values or man-
ually switch on the heating element if necessary.
To ensure optimum compressor operating times and down-
times, it is important to avoid manual and repeated switching
on and off of the heat pump!
"Heat Pump" switch
The heat pump is ready for operation when the "Heat Pump"
switch is in the " " position. If the hot-water temperature in the
cylinder drops below the set value, the heat pump will be acti-
vated until the desired hot-water temperature has been reached.
"Heating Element" switch
If more hot water is needed or if a higher water temperature
(> 60 ±2 °C) is desired, the "Heating Element" switch can be
used to switch on the integrated 1.5 kW radiator.
If the "Heating Element" switch is in the "I" position, the approx.
upper third of the cylinder will be heated up to the maximum tem-
perature of the heating element controller (factory setting 65 °C);
1 at hot-water temperatures > 60 °C, DHW preparation is done by
heating element only. It is possible to optionally control the heat-
ing element via an external switch (see point 5.3). If the "Heating
Element" switch is in the " " position (automatic operation) and
the air temperature is 8 ±1.5 °C (dead-band value 3 K), the cylin-
der volume is heated up (nominally only) to the setpoint temper-
ature of the hot-water temperature controller.
Note → Heating element controller
The heating element controller is a second control unit for the op-
erating range of the electric heating element, and independent of
the hot-water controller. The factory set switch-off temperature of
65 °C can be changed by a technician (see Point 2.4)
"Heat Exchanger" switch (HW HP with internal heat
exchanger only)
When this switch is operated, external heat exchanger operation
is enabled, i.e. hot water can be prepared (e.g. in winter) using a
second heat generator (e.g. boiler, solar installation etc. - if the
necessary electrical connection is established at the heat pump).
Hot-water temperature is controlled using the HW HP tempera-
ture controller.
6.2
E-7