Daikin EBHQ006BAV3 Installation Manual page 37

NOTICE
If the booster heater operation is limited ([4-03]=0), then
set point of field setting parameter [7-00] has only meaning
for powerful domestic water heating.
[7-01] Hysteresis value
difference determining the booster heater ON temperature
(T ). T = T
BH ON BH ON HP OFF
NOTICE
The minimum
temperature (T
OFF temperature (T
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.
NOTICE
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 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.
X2M
1 2 3 4
SP2 SP1
NOTICE
When dual set point control is enabled, heating/cooling
selection always has to be done on the user interface.
EBHQ006+008BAV3 + EKCBX/H008BAV3
Unit for air to water heat pump system
4PW64602-1A – 09.2010
booster heater: temperature
– [7-01]
value for booster heater
) is 2°C (fixed) below heat pump
BH ON
).
HP OFF
SP1 First set point contact
SP2 Second set point contact
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).
ON
[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 36.
NOTICE
Note that when the unit is configured to work with a
room thermostat (refer to "13.2. Room thermostat
installation configuration" on page 28), 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 [6] on page 34) 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 36.
1
0
1
0
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
If the outdoor temperature is higher than the field setting to
which parameter [4-02] is set, then field settings of
parameters [8-01], [8-02], and [8-04] are not considered.
) has already been
HP OFF
) has not yet been
HP OFF
[8-00]
[8-01] [8-02]
t
Installation manual
35