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Installation manual
30
EKCBX/H008BBV3
Unit for air to water heat pump system
4PW66983-1C – 08.2011
[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
HP OFF
) has already been
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
HP OFF
) has not yet been
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
■
[8-02] 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
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
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 is always a fixed
value.
■
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] 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.
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).
X2M
1
2
3
4
SP1
SP2
SP1
First set point contact
SP2
Second set point contact
INFORMATION
Note that when the unit is configured to work with a
room thermostat (refer to
installation configuration" on page 21
), the 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
on
) is reached. When no
room thermostat is installed, the timer is always taken
into account.
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] is set,
then field settings of parameters [8-01], [8-02], and
[8-04] are not considered.
■
Parameter [F-01] is only applicable for EKCBX indoor
units.
t
1
0
1
0
[8-01]
[8-02]
[8-00]
