EKHBH/XE008BA
Indoor unit for air to water heat pump system
4PW56301-1A
Installation manual
27
[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, minimum time
between two domestic water heating cycles by heat pump, and
booster heater delay time.
■
[8-00] Minimum running time: specifies the minimum time
period during which heat pump domestic water heating mode
should be activated, even when the target domestic hot water
temperature for heat pump (T
HP OFF
) has already been
reached.
■
[8-01] Maximum running time: specifies the maximum time
period during which heat pump domestic water heating mode
can be activated, even when the target domestic hot water
temperature for heat pump (T
HP OFF
) has not yet been
reached.
The actual maximum running time will automatically variate
between [8-01] and [8-01]+[8-04] depending on the outdoor
temperature. See figure in chapter
.
■
[8-02] Anti-recycling time: specifies the minimum required
interval between two heat pump domestic water heating
mode cycles.
The actual anti-recycling time will automatically variate
between [8-02] and 0 depending on the outdoor temperature.
See figure in chapter
■
[8-04] Additional running time at [4-02]/[F-01]: specifies the
additional running time on the maximum running time at
outdoor temperature [4-02] or [F-01]. See figure below.
[9] Cooling and heating set point ranges
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 set point before the
compressor stops. This function is only applicable in heating
mode.
Before changing field settings for domestic water heating,
read attentively the warnings mentioned in the paragraph
"Domestic hot water tank (option)" on page 2
Note that when the unit is configured to work with a
room thermostat (refer to
installation configuration" on page
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
) is reached. When no room thermostat
is installed, the timer is always taken into account.
1
Heat pump domestic water heating mode
(1 = active, 0 = not active)
2
Hot water request for heat pump (1 = request, 0 = no request)
t
Time
If the outdoor temperature is higher than the field setting to
which parameter [4-02] is set, then field settings of
parameters [8-01], [8-02], and [8-04] are not considered.
t
1
0
1
0
[8-01]
[8-02]
[8-00]
Heating
Cooling
t
Time
T
A
Ambient (outdoor) temperature
anti-recycle time
maximum running time
The full advantage of [8-04] will be applicable if setting
[4-03] is not 1.
CAUTION
■
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.
t
T
A
t
T
A
0
[8-01]
[5-03]
[4-02]
[8-02]
[8-01]+
[8-04]
0
[8-01]
[F-01]
35
°
C
[8-02]
[8-01]+
[8-04]
