EKHBH/XE008BA
Indoor unit for air to water heat pump system and options
4PW56302-1
Operation manual
6
Space cooling operation (
c
)
In this mode, cooling will be activated as required by the water
temperature set point.
Domestic water heating operation (
w
)
In this mode, the indoor unit will heat up the domestic hot water tank
by heat pump when the space heating/space cooling operation has
reached its temperature set point or heat pump domestic water
heating has a higher demand request than space side (depends on
dipswitch setting).
Quiet mode operation (
s
)
Quiet mode operation means that the outdoor unit works at reduced
capacity so that the sound produced by the outdoor unit drops. This
implies that the indoor heating and cooling capacity will also drop.
Beware of this when a certain level of heating is required indoors.
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.
■
The space cooling temperature set point can only be
set manually (refer to
■
Switching between space heating and space cooling
operation can only be done by pressing the
=
button or by the external room thermostat.
■
Space cooling operation is not possible if the
installation is a "heating only" installation.
■
Refer to the warning mentioned in
concerning domestic water heating.
■
The domestic hot water water temperature set point
can only be set manually (refer to
■
Any domestic water heating operation is impossible
when the domestic hot water tank is not installed.
■
When the
w
icon is blinking, the domestic hot water is
heating up by the solar kit option and not by the indoor
unit. Refer to installation manual of the EKSOLHW
solar kit.
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).
