Operation manual
15
EKHBH/XE008BA
Indoor unit for air to water heat pump system and options
4PW56302-1
[3] Auto restart
When power returns after a power supply failure, the auto restart
function reapplies the user interface settings at the time of the power
supply failure.
Note that with the function disabled the schedule timer will not be
activated when power returns to the unit after a power supply failure.
Press the
pr
button to enable the schedule timer again.
■
[3-00] Status: defines whether the auto restart function is
turned ON (0) or OFF (1).
[4] Space heating off temperature
Space heating off temperature
■
[4-02] Space heating off temperature: outdoor temperature
above which space heating is turned off, to avoid
overheating.
[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.
[C] Setup on EKRP1HB digital I/O PCB
Solar priority mode
■
[C-00] Solar priority mode setting: for information concerning
the EKSOLHW solar kit, refer to the installation manual of
that kit.
[D] Local shift value weather dependent
Local shift value weather dependent
The local shift value weather dependent field setting is only relevant
in case weather dependent set point (see field setting
dependent set point (heating operation only)" on page
selected.
■
[D-03] Local shift value weather dependent: determines the
shift value of the weather dependent set point around
outdoor temperature of 0°C.
[E] Unit information readout
■
[E-00] Readout of the software version (example: 23)
■
[E-01] Readout of the EEPROM version (example: 23)
■
[E-02] Readout of the unit model identification (example: 11)
■
[E-03] Readout of the liquid refrigerant temperature
■
[E-04] Readout of the inlet water temperature
Space heating/cooling always has priority over the
disinfection function.
The disinfection function is only possible when the unit is
not operating for space heating/cooling.
To allow the disinfection function, the schedule timers must
be used. Set the disinfection function settings so that it is
combined with the domestic hot water function that is
running during disabled space heating/cooling interval. It is
advised to run the disinfection function for minimum 1 hour.
Refer to the extra addendum of the operation manual for
an example pattern.
Refer to the operation manual for a detailed explanation
how to program the schedule timer.
If using a room thermostat, the disinfection function is not
possible as long as the room thermostat demands heating
or cooling. In this case, de-activate the room thermostat
demand by its schedule timer. Refer to the manual of the
room thermostat for a detailed explanation on how to
de-activate space heating/cooling by schedule timer.
NOTE
It is therefore recommended to leave the auto restart
function enabled.
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
Target water temperature
T
A
Outdoor temperature
range
Range
local shift
value
Local shift value
[1-00], [1-01],
[1-02], [1-03]
Applicable field setting of the weather dependent set
point [1]
[D-03]
Outdoor temperature range
(T
A
)
Local shift value
0
—
—
1
–2°C~2°C
2
2
4
3
–4°C~4°C
2
4
4
NOTE
[E-03] and [E-04] readouts are not permanently
refreshed. Temperature readouts are updated
after looping through the field setting first codes
again only.
T
A
T
t
[1-03]
[1-00]
0
°
C
[1-01]
[1-02]
local shift value
range
