Functional Description - Dimplex BWP 30 HS Installation And Operating Instructions Manual

Display
2nd heat generator
2nd heat generator (HG2)
Bivalence temperature
Ventilation
Ventilation
Photovoltaic
Photovoltaic
Setpoint

7.3 Functional description

The domestic hot water heat pump is used for heating domestic
hot water. To do this, the heat pump uses the heat stored in the
ambient air and/or outside air. The essential difference between
the two devices is the range of air temperatures at which they
can be operated
BWP 30HS : +8 °C to 45 °C
BWP 30HSD: -8 °C to 45 °C. The BWP 30HSD also
independently defrosts the evaporator in the device.
ATTENTION!
The use of outside air as a heat source is expressly recommended only
outside of the heating period or in regions which have a mild climate
(above 0 °C) all year round.
7.3.1 Time programs
Shut-off times
It is possible to block the operation of the domestic water heat
pump by setting shut-off times. Two independent shut-off times
can be programmed. The individual shut-off times are activated
as soon as the hour or minute value is not equal to zero. During
the shut-off times, the cylinder is kept at a minimum temperature
in order to avoid loss of comfort. The ventilation, solar and rapid
heating (heating element) functions, and the function for using
electricity from photovoltaic systems are possible during shut-off
times.
Thermal disinfection
The start time for thermal disinfection and the desired setpoint
must be set. The function is activated as soon as the hour or
minute value is not equal to zero.
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Description
Activates a 2nd heat generator (e.g. oil or gas boiler). If solar operation
is not being used, the 2nd heat generator can be activated. Priority is
given to the activation of the heating element if the lower operating limit
or the switching temperature is undershot.
Limit temperature for 2nd heat generator. The heat pump is blocked
below this temperature
**(BWP 30HS down to 8 °C, BWP 30HSD down to -8 °C)
Activates the ventilation function. Continuous operation of the fan is
also possible independently of domestic hot water preparation in order
to ensure air circulation or an exhaust air function. The speed and thus
the volume flow can be set as a percentage. 100 % corresponds to a
volume flow of 450 m³/h. 0 % means that the fan is switched off outside
of domestic hot water preparation.
Activates the photovoltaic function. The digital input is evaluated after
the photovoltaic function is activated (see Chapt. 7.3.6 on page 10 for
further information)
Input of the domestic hot water setpoint that becomes active when
sufficient output is available.
7.3.2 Heating element
The integrated heating element can be used to supplement heat
pump operation. The heating element is automatically switched
on if the domestic hot water set temperature is not reached within
8 hours in heat pump operation (BWP 30HSD version only). The
heating element is always requested if the heat pump's operating
limits are exceeded and no 2nd heat generator is available. This
occurs when the air intake temperature is exceeded/overshot or
the domestic hot water set temperature is above 60 °C. Using the
"Rapid heating" key, it is possible to select whether the heating
element should be active within a set period of time or whether it
should be permanently active. If the air intake temperature is
above 8 °C, the heating element is blocked. It can only be
switched on above the 8 °C limit for the rapid heating function.
7.3.3 Ventilation
The ventilation function can be activated. This function comes
into use when the heat pump is switched off, i.e. no domestic hot
water request is pending. In this case, the heat pump's fan
continues to run according to the setpoint. This should ensure a
minimum quantity of exhaust air independently of heat pump
operation, e.g. in the case of commercial waste heat recovery.
7.3
Setting range
Yes
No
- 8 / 8**
....
15
20%
....
100%
Yes
No
35 °C
...45 °C...
60 °C
EN-9