E(D/B)(H/L)Q011~0W1
Unit for air to water heat pump system and options
4PW51122-1
Operation manual
14
[8] Domestic water heating mode timer
Applies only to installations with a domestic hot water tank.
The 'domestic water heating mode timer' field settings defines the
minimum and maximum domestic water heating times, and minimum
time between two domestic water heating cycli.
■
[8-00] Minimum running time: specifies the minimum time
period during which domestic water heating should be
activated, even when the target domestic water temperature
has already been reached.
■
[8-01] Maximum running time: specifies the maximum time
period during which domestic water heating can be activated,
even when the target domestic hot water temperature has
not yet been reached.
Note that when the unit is configured to work with a room
thermostat (refer to chapter
"Room thermostat installation
configuration" in the installation manual
), the maximum
running timer will only be taken into account when there is a
request for space cooling or space heating. When there is no
request for room cooling or room heating, domestic water
heating by the heat pump will continue until the 'heat pump
OFF temperature' (see field settings [5]) is reached. When no
room thermostat is installed, the timer is always taken into
account.
■
[8-02] Anti-recycling time: specifies the minimum required
interval between two domestic water heating cycli.
■
[8-03] Booster heater delay time: specifies the start-up time
delay of the booster heater operation after start of the heat
pump domestic water heating operation.
Example
[9] Cooling and heating set points
The purpose of this field setting is to prevent the user from selecting
a wrong (i.e., too hot or too cold) leaving water temperature. Thereto
the heating temperature set point range and the cooling temperature
set point range available to the user can be configured.
■
[9-00] Heating set point upper limit: maximum leaving water
temperature for heating operation.
■
[9-01] Heating set point lower limit: minimum leaving water
temperature for heating operation.
■
[9-02] Cooling set point upper limit: maximum leaving water
temperature for cooling operation.
■
[9-03] Cooling set point lower limit: minimum leaving water
temperature for cooling operation.
■
[9-04] Overshoot setting: defines how much the water
temperature may rise above the setpoint before the
compressor stops. This function is only applicable in heating
mode.
[A] Quiet mode
This field setting allows to select the desired quiet mode. Two quiet
modes are available: quiet mode A and quiet mode B.
In quiet mode A, priority is given to the unit operating quietly under all
circumstances. Fan and compressor speed (and thus performance)
will be limited to a certain percentage of the speed at normal
operation. In certain cases, this might result in reduced performance.
In quiet mode B, quiet operation might be overridden when higher
performance is required. In certain cases, this might result in less
quiet operation of the unit to meet the requested performance.
■
[A-00] Quiet mode type: defines whether quiet mode A (0) or
quiet mode B (2) is selected.
■
[A-01] Parameter 01: do not change this setting. Leave it set
to its default value.
1
Domestic water heating (1 = active, 0 = not active)
2
Hot water request (1 = request, 0 = no request)
t
Time
NOTE
If the outdoor temperature is higher than the field
setting to which parameter [4-02] is set, then field
settings of parameters [8-01] and [8-02] are not
considered.
1
Booster heater operation (1 = active, 0 = not active)
2
Heat pump domestic hot water operation (1 = request, 0 = no
request)
3
Hot water request (1 = request, 0 = no request)
t
Time
t
1
0
1
0
[8-01]
[8-02]
[8-00]
t
1
0
1
0
1
0
[8-03]
3
NOTE
■
Take care that [8-03] is always smaller than the
maximum running time [8-01].
■
By adapting the booster heater delay time versus
the maximum running time, an optional balance
can be found between the energy efficiency and
the heat up time.
■
However, if the booster heater delay time is set
too high, it might take a long time before the
domestic hot water reaches its set temperature
upon domestic hot water mode request.
Energy saving settings
Quick heating settings (default)
[8-01]
20~95 min
30 min
[8-03]
20~95 min
20 min
■
In case of a floor heating application, it is important to
limit the maximum leaving water temperature at
heating operation according to the specifications of
the floor heating installation.
■
In case of a floor cooling application, it is important to
limit the minimum leaving water temperature at
cooling operation (field setting of parameter [9-03]) to
16~18°C to prevent condensation on the floor.
Do not set other values than the ones mentioned.
