Rotex RBLQ011AA6V3, Operation Manual

Page: 26 / 176

Operation manual
5
R(D/B)LQ011~0W1
Unit for air to water heat pump system and options
4PW53150-1
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 unit will deliver hot water to the domestic hot water
tank when the space heating or space cooling operation has reached
its temperature set point. When necessary and when allowed by the
booster heater schedule timer (refer to "Programming quiet mode,
booster heating or domestic water heating" on page 9), the booster
heater provides auxiliary heating for the domestic hot water tank.
Powerful domestic water heating operation
In the case of urgent need of domestic hot water, the domestic hot
water temperature set point can be reached quickly by using the
booster heater. Powerful domestic water heating operation is forcing
the booster heater to operate until the domestic hot water
temperature set point is reached.
Quiet mode operation (
s
)
Quiet mode operation means that the unit works at reduced capacity
so that the noise produced by the 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.
Two quiet modes are available.
Disinfection function
When the w , ç , é and m icons are blinking together, the
disinfection function has been activated. This is not a malfunction.
Refer to "[2] Disinfection function" on page 11 for more details.
Freeze-up protection function
When the
h
,
é
and
§
icons are blinking together, the freeze-up
protection has been activated. This is not a malfunction. Refer to
"[4] Backup heater operation and space heating off temperature" on
page 12 for more details.
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 "Schedule
timer operation" on page 6).
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 cooling ( c ) and heating ( h )
1 Use the = button to select space cooling ( c ) or space heating
(
h
).
Icon c or h 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
"Field settings" on page 10). 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 "Field
settings" on page 10).
• 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.
NOTE
■
The space cooling temperature set point can only
be set manually (refer to "Manual operation" on
page 5).
■
Switching between space heating and space
cooling operation can only be done by pressing
the
= button or by an external room thermostat.
■
Space cooling operation is not possible if the
installation is a "heating only" installation.
NOTE
■
In order to provide domestic hot water throughout
the day, it is advised to keep the domestic water
heating operation on continuously.
■
The domestic hot water water temperature set
point can only be set manually (refer to "Manual
operation" on page 5).
■
Any domestic water heating operation is
impossible when the domestic hot water tank is
not installed.
NOTE 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.
NOTE 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 cooling or space heating).
NOTE 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.
4PW53150-1 Page 5 Thursday, May 7, 2009 1:59 PM