Rotex RKHBRD011ABV1 Manual De Instalación página 73

[8] Option setup
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[8-00] Remote controller temperature control
When using the remote control delivered with the unit, 2 types of
temperature control are possible. Default [8-00]=1 which means
that the remote controller is used as room thermostat, so the
remote controller can be placed in the living room to control the
room temperature. Set [8-00] to 0 to use the unit in leaving water
temperature control.
■
[8-01] Backup heater optional setting
This setting applies to installations with a backup heater
installed (refer to "[6-02] Heater kit" on page 23).
■ [8-01]=0 (default)
During benefit kWh rate power supply mode the backup
heater will not operate. No automatic heat pump operation
stop is performed at lower ambient temperatures.
■ [8-01]=1
During benefit kWh rate power supply mode the backup
heater will operate automatically in emergency mode. If the
ambient temperature is lower than –25°C, the heat pump
operation will stop and the unit will automatically change to
emergency operation.
For more information about connections to the backup heater,
refer to the backup heater installation manual.
■
[8-02] Emergency operation
During emergency mode, heating is only done by the heater kit,
not by the heat pump.
Activation of emergency mode is done by changing field setting
[8-02]=1.
Activating the emergency mode will stop the heat pump
operation. The pump of the indoor unit will be started, but
heating itself is done by the heater kit. If there are no error
conditions in leaving or returning water thermistors, the heater
kit can start to follow emergency operation.
NOTE Before activating emergency operation, be sure to
activate the heater kit. The heater will stay in
emergency mode until the field setting is set back
to default [8-02]=0.
■
[8-03] Quiet mode
The unit has a quiet mode functionality for which 3 levels can be
selected:
■ [8-03]=1 low noise level 1 (default)
■ [8-03]=2 low noise level 2
■ [8-03]=3 low noise level 3 (is the most quiet)
Activating this quiet mode is done by pushing the QUIET MODE
button on the remote controller or through the schedule timer.
■
[8-04] Freeze-up prevention
The unit has a freeze-up prevention functionality for which 3
levels can be selected:
■ [8-04]=0 prevention level 0 (default: no prevention)
■ [8-04]=1 prevention level 1
■ [8-04]=2 prevention level 2
The freeze-up prevention is only active when the unit is in
thermo OFF condition. If prevention level 1 is enabled, the
freeze-up prevention will start if the outdoor ambient
temperature <4°C and if leaving or return water temperature
<7°C. For prevention level 2, the freeze-up prevention will start
as soon as the ambient temperature <4°C.
For both cases the pump will operate and if leaving or return
water <5°C for 5 minutes the unit will start up to prevent too low
temperatures.
It is advised to enable freeze-up prevention if the indoor unit is
located in a colder ambient room (e.g. garage, ...) to prevent
water freeze-up.
RKHBRD011~016ABV1+Y1
Indoor unit for air to water heat pump system
4PW61218-1C – 2012.06
[9] Automatic temperature compensation
If needed, it is possible to adjust some thermistor value of the unit by
a correction value. This can be used as countermeasure for
thermistor tolerances or capacity shortage.
The compensated temperature (= measured temperature plus
compensation value) is then used for controlling the system and will
be displayed in the temperature read-out mode.
■
[9-00] Leaving water temperature compensation value
■
[9-01] Domestic hot water tank compensation value
■
[9-02] Thermo ON/OFF admission
By changing this value the operation range for space heating
operation can be modified.
If the ambient temperature becomes higher than (24°C + the
value of [9-02]) no space heating is possible.
Space heating can be requested as long as the ambient
temperature is lower than (20°C + the value of [9-02]).
Example: [9-02]=–2°C
T
A
C C
B
A No space heating operation possible
B Request for space heating possible
C Hysteresis area
T Ambient temperature
[A] Option setup
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[A-01] Current limitation
This setting provides the possibility to limit the power
consumption of the indoor unit as follows:
Setting
[A-01]=0 (default)
[A-01]=1 18.4 A
[A-01]=2
The indoor unit current is limited, the outdoor unit is slave and
will also reduce its power consumption consequentially.
However transient conditions with higher power consumption
are possible.
■
[A-02] Temperature difference for leaving and returning water
The unit is designed to support radiator operation. The advised
leaving water temperature (set by the remote controller) for
radiators is 65°C. In such a case the unit will be controlled to
realize a temperature difference (ΔT) of 10°C, which means that
the returning water to the unit is around 55°C.
Depending on the installed application (radiators, fan coil
units, ...) or situation, it can be required to change the ΔT. This
can be done by changing field setting [A-02].
NOTE To prevent excessive corrosion of the unit water
piping a ΔT ≥10° is strongly advised when the low
water temperature can become higher than 60°C.
■
[A-03] See chapter "Multiple set point control" on page 29.
■
[A-04] See chapter "Multiple set point control" on page 29
24°C–2°C = 22°C
20°C–2°C = 18°C
V1 Y1
23 A 13 A
10.4 A
15 A 8.5 A
Installation manual
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