EKHVWQ0 E260AA1V3
Domestic hot water heat pump
4PW65343-1A – 10.2010
Operation manual
6
27.
SCHEDULE TIMER BUTTON
r
/
p
The main function of this multi-purpose button is to
enable/disable the schedule timer. If the schedule timer is
disabled, the system will heat up the domestic water the whole
day as long as the actual domestic hot water tank temperature is
lower than the set point temperature.
The button is also used to program the controller. The function of
the button depends on the actual status of the controller or on
previous actions carried out by the operator.
If the controller is set in permission level 3 (refer to "Field
settings" on page 13), the schedule timer button will not be
operable.
28.
TIME ADJUST BUTTON
pi
and
pj
These multi-purpose buttons are used to adjust the clock and in
schedule timer programming mode.
29.
DOMESTIC HOT WATER TEMPERATURE ADJUST BUTTONS
wbi
and
wbj
These multi-purpose buttons are used to adjust the current set
point of the domestic hot water in continuous operation mode or
in schedule timer programming mode. The buttons are also used
to select the weekday while setting the clock.
30.
POWERFUL MODE BUTTON
P
This button is used if a sudden request for hot water is needed
while no hot water is available in the domestic hot water tank.
When pushed, the domestic water will be heated up fast until the
set point temperature (determined by field setting) is reached.
The
w
icon wil be blinking rapidly with 0.2 seconds interval.
This action is only possible when the unit is operating. If the
powerful mode button (
P
) is pressed when the unit is in OFF
mode, the "
n
" message will be displayed.
31.
QUIET MODE BUTTON
s
This button enables or disables quiet mode.
If the controller is set in permission level 3 (refer to "Field
settings" on page 13), the quiet mode button will not be
operable.
5.3.
Setting up the controller
After initial installation, the user can set the clock and day of the
week.
The controller is equipped with a schedule timer that enables the user
to schedule operations. Setting the clock and day of the week is
required to be able to use the schedule timer.
Setting the clock
1
Hold down the
pr
button for 5 seconds.
The clock read-out and the day of week indicator start flashing.
2
Use the
pi
and
pj
buttons to adjust the clock.
Each time the
pi
or
pj
button is pressed, the time will
increase/decrease by 1 minute. Keeping the
pi
or
pj
button pressed will increase/decrease the time by 10 minutes.
3
Use the
wi
or
wj
button to adjust the day of the week.
Each time the
wi
or
wj
button is pressed the next or
previous day is displayed.
4
Press the
<
button to confirm the current set time and day of the
week.
To leave this procedure without saving, press the
pr
button.
If no button is pressed for 5 minutes the clock and day of the
week will return to their previous setting.
Setting the schedule timer
To set the schedule timer, refer to chapter "Programming and
consulting the schedule timer" on page 9.
5.4.
Description of the operation modes
Basic domestic water heating operation (
w
)
In this mode, the indoor unit will heat up the domestic hot water tank.
There are 2 basic domestic water heating modes: continuous mode
and scheduled timer mode. All heating will be activated as required
by the water temperature set point. The set point can be set manually
or auto adaptive (refer to "Auto adaptive set point operation" on
page 9).
Continuous operation
In continuous operation mode, the domestic water is always heated
up to the required set point. As soon as the domestic water
temperature is lower than the set point temperature (taking into
account the heat pump ON differential), the heating up of the
domestic water will start automatically. This operation mode remains
enabled until the schedule timer button is pressed (refer to "Schedule
timer operation" on page 7).
As the controller has a wide variety of functions, it is possible to
select a function which is restricted at a certain moment. In that case
the message
n
will appear.
Switching on domestic water heating (
w
)
1
Switch on the unit by pushing the
Y
button.
The operation LED
0
lights up.
2
For continuous operation the
p
icon must be OFF.
3
Use the
wi
and
wj
buttons to set the desired water
temperature.
The temperature range for heating is by default 35°C to 60°C.
This means that in default operation only the heat pump will heat
up the water.
For temperatures higher than 60°C (until 75°C maximum) refer
to the field settings explained in the installation manual.
In order to avoid freezing of installation space, heating by the
heat pump is not operable when the indoor ambient temperature
drops below a certain temperature (refer to the field settings
explained in the installation manual). The booster heater will
take over the heating proces.
The clock needs to be set manually. Adjust the setting
when switching from summertime to wintertime and vice
versa.
INFORMATION
The domestic hot water temperature set point can also be
auto adaptive (icon
a
is shown).
This means that the controller calculates the water
temperature set point based on the history of use of
domestic hot water.
