EKHBH/X016BA
Indoor unit for air to water heat pump system and options
4PW54186-1
Operation manual
6
Controller operations
Manual operation
In manual operation, the user manually controls the settings of the
installation. The last setting remains active until the user changes it or
until the schedule timer forces another setting (refer to
).
As the controller can be used for a wide variety of installations, it is
possible to select a function which is not available on your
installation. In that case the message
n
will appear.
Switching on and setting space heating (
h
) and space cooling
(
c
)
1
Use the
=
button to select space heating (
h
) or space cooling
(
c
).
Icon
h
or
c
appears on the display as well as the corresponding
water temperature set point.
2
Use the
bi
and
bj
buttons to set the desired water
temperature.
•
Temperature range for heating: 25°C to 55°C
The temperature for heating can be set as low as 15°C (see
). However, the temperature for
heating should only be set lower than 25°C during
commissioning of the installation. When set lower than 25°C,
only the backup heater will operate.
In order to avoid overheating, space heating is not operable
when the outdoor ambient temperature rises above a certain
temperature (as set through field setting [4-02], refer to
•
Temperature range for cooling: 5°C to 22°C
3
Switch on the unit by pushing the
y
button.
The operation LED
0
lights up.
Selection and setting of domestic water heating (
w
)
1
Use the
v
button to activate domestic water heating (
w
).
Icon
w
appears on the display.
2
Use the
wi
or
wj
button to display the actual
temperature set point and subsequently, to set the correct
temperature.
The actual temperature set point only appears on the display
after pressing one of the buttons
wi
or
wj
. If no button is
pressed for 5 seconds, the temperature set point will
automatically disappear from the display again.
Temperature range for domestic water heating: 30°C to 78°C
3
Press the
v
button to deactivate domestic water heating (
w
).
Icon
w
disappears from the display.
Selecting powerful domestic water heating operation
1
Press
v
for 5 seconds to activate powerful domestic water
heating operation.
Icons
w
and
m
start flashing.
Powerful domestic water heating is deactivated automatically
when the set point for the domestic hot water is reached.
Selecting quiet mode operation (
s
)
1
Use the
s
button to activate quiet mode operation (
s
).
Icon
s
appears on the display.
If the controller is set in permission level 2 or 3 (refer to
s
button will not be operable.
Selecting weather dependent set point operation (only in
heating mode)
1
Press the
ba
button to select weather dependent set point
operation.
Icon
a
appears on the display as well as the shift value. The
shift value is not shown in case it is 0.
2
Use the
bi
and
bj
buttons to set the shift value.
Range for the shift value: –5°C to +5°C
Displaying actual temperatures
1
Push the
ba
button for 5 seconds.
The
b
icon and the outgoing water temperature are displayed.
The icons
l
and
=
are flashing.
2
Use the
pi
and
pj
buttons to display:
•
The outdoor temperature (
u
icon is flashing).
•
The domestic hot water tank temperature (
w
icon is
flashing).
•
The outgoing water temperature (
=
are flashing).
If no button is pressed for 5 seconds, the controller leaves the
display mode.
CAUTION
The actual operation range depends on the values set on
field setting [9].
These values shall be determined based on the
application.
In heating mode (
h
), the water temperature set point can
also be weather dependent (icon
a
is shown).
This means that the controller calculates the water
temperature set point based on the outdoor temperature.
In this case, instead of showing the water temperature set
point, the controller shows the "shift value" which can be
set by the user. This shift value is the temperature
difference between the temperature set point calculated by
the controller and the real set point. E.g. a positive shift
value means that the real temperature set point will be
higher than the calculated set point.
When the unit is connected to an external room
thermostat, buttons
=
and
y
are not operable and the
icon
e
is shown. In this case, the external room
thermostat switches the unit on or off and determines the
operation mode (space heating or space cooling).
Remark that pushing the
y
button has no influence on
the domestic water heating. Domestic water heating is only
switched on or off by means of the
v
button.
