Rotex RKHBH016BB3V3 Manual De Instalación página 87

Dual set point control
Applies only to installations with different heat emitter which require
different set points.
Dual set point control makes it possible to generate 2 different set
points.
INFORMATION
There is no indication available which set point is active!
■ [7-02] Dual set point control status: defines whether the dual
set point control is enabled (1) or disabled (0).
■ [7-03] Second set point heating: specifies the second set
point temperature in heating operation.
■ [7-04] Second set point cooling: specifies the second set
point temperature in cooling operation.
NOTICE
■
The first set point heating/cooling is the set point
selected on the user interface.
- In heating mode the first set point can be a fixed
value or weather dependent.
- In cooling mode the first set point can be a fixed
value or weather dependent.
■
The second set point heating [7-03] should be linked
to the heat emitters which requires the highest set
point in heating mode. Example: fan coil unit.
■
The second set point cooling [7-04] is always a fixed
value. It should be linked to the heat emitters which
requires the lowest set point in cooling mode.
Example: fan coil unit.
■
The actual second set point heating value depends
on the selected value of setting [7-03].
- In case [7-03]=1~24, the actual second set point
will be first set point heating increased with [7-03]
(the maximum is 55°C).
In this way the second set point heating is linked to
the first set point heating.
- In case [7-03]=25~55, the actual second set point
heating is equal to [7-03].
■
The selection of second set point or first set point is
determined by the terminals (X2M: 1, 2, 4).
The second set point has always priority on the first
set point.
X2M
1 2 3 4
SP2 SP1
SP1 First set point contact
SP2 Second set point contact
INFORMATION
When dual set point control is enabled, heating/cooling
selection always has to be done on the user interface.
NOTICE
It is the responsibility of the installer to make sure no
unwanted situations can occur.
It is very important that the water temperature to the floor
heating loops never becomes too high in heating mode or
never too cold in cooling mode. Failure to observe this rule
can result in construction damage or discomfort. For
example in cooling mode condensation on the floor can
occur when water towards the floor heating loops is too
cold (dew point).
RKHBH/X016BB
Indoor unit for air to water heat pump system
4PW62576-1 – 10.2010
[8] Domestic water heating mode timer
Applies only to installations with a domestic hot water tank.
The 'domestic water heating mode timer' field settings defines the
minimum and maximum domestic water heating times, minimum time
between two domestic water heating cycles by heat pump, and
booster heater delay time.
■ [8-00] Minimum running time: specifies the minimum time
period during which heat pump domestic water heating mode
should be activated, even when the target domestic hot water
temperature for heat pump (T
reached.
■ [8-01] Maximum running time: specifies the maximum time
period during which heat pump domestic water heating mode
can be activated, even when the target domestic hot water
temperature for heat pump (T
reached.
The actual maximum running time will automatically variate
between [8-01] and [8-01]+[8-04] depending on the outdoor
temperature. See figure in chapter "[8-04]" on page 34.
INFORMATION
Note that when the unit is configured to work with a
room thermostat (refer to "8.2. Room thermostat
installation configuration"
maximum running timer will only be taken into
account when there is a request for space heating
or space cooling. When there is no request for
space heating or space cooling, domestic water
heating by the heat pump will continue until the
'heat pump OFF temperature' (see field settings
"[6]" on page 31) is reached. When no room
thermostat is installed, the timer is always taken
into account.
■ [8-02] Anti-recycling time: specifies the minimum required
interval between two heat pump domestic water heating
mode cycles.
The actual anti-recycling time will automatically variate
between [8-02] and 0 depending on the outdoor temperature.
See figure in chapter "[8-04]" on page 34.
1
0
1
0
[8-00]
[8-01]
1 Heat pump domestic water heating mode (1=active, 0=not
active)
2 Hot water request for heat pump (1=request, 0=no request)
t Time
INFORMATION
■
If the outdoor temperature is higher than the field
setting to which parameter [4-02] is set, and lower
than the field setting to which parameter [F-01], then
field settings of parameters [8-01], [8-02], and [8-04]
are not considered.
■
Parameter [F-01] is only applicable for RKHBX*
indoor units.
) has already been
HP OFF
) has not yet been
HP OFF
on page 23), the
t
[8-02]
Installation manual
33