EHVH/X16
Daikin Altherma - Low Temperature Split
4P313777-1 – 2012.05
Installer reference guide
44
8 Configuration
Weather dependent
The weather dependent installer settings define the parameters for
the weather dependent operation of the unit. When weather
dependent operation is active the desired tank temperature is
determined automatically depending on the averaged outdoor
temperature: low outdoor temperatures will result in higher desired
tank temperatures as the cold water tap is colder and vice versa. In
case of scheduled or screheat domestic hot water
preparation, the storage comfort temperature is weather dependent
(according to the weather dependent curve), the storage economic
and reheat temperature are NOT weather dependent. In case of
reheat only domestic hot water preparation, the desired tank
temperature is weather dependent (according to the weather
dependent curve). During weather dependent operation, the end-
user cannot adjust the desired tank temperature on the user
interface.
Booster heater and heat pump operation
For systems with separate domestic hot water tank (only for
EHBH/X
)
#
Code
Description
[A.4.2.2]
N/A
Weather dependent desired tank
temperature is:
Q
Absolute (default): disabled. All
desired tank temperature are NOT
weather dependent.
Q
Weather dep.: enabled. In
scheduled or screheat
mode, the storage comfort
temperature is weather dependent.
Storage economic and reheat
temperatures are NOT weather
dependent. In reheat mode, the
desired tank temperature is weather
dependent.
Note: When the displayed tank
temperature is weather dependent,
it cannot be adjusted on the user
interface.
[A.4.2.3]
[0-0E]
[0-0D]
[0-0C]
[0-0B]
Weather-dependent curve
T
DHW
: The desired tank temperature.
T
a
: The (averaged) outdoor ambient
temperature
Q
[0-0E]: low outdoor ambient
temperature. –20~5°C (default: –
10°C)
Q
[0-0D]: high outdoor ambient
temperature: 10~20°C (default:
15°C)
Q
[0-0C]: desired tank temperature
when the outdoor temperature
equals or drops below the low
ambient temperature: 55~70°C
(default: 70°C)
Q
[0-0B]: desired tank temperature
when the outdoor temperature
equals or rises above the high
ambient temperature: 35~55°C
(default: 55°C)
T
DHW
T
a
[0-0C]
[0-0B]
[0-0E]
[0-0D]
[A.4.2.1]
N/A
Schedule temperatures
The possible actions of the tank
temperature are:
Q
Presets (default): the predefined
temperatures storage comfort,
storage economic, and storage
stop. The predefined temperature
are set in the menu structure.
Q
Custom: custom temperatures within
the allowable range and storage stop.
Note: When selecting this value, it is
NOT possible to select weather
dependent tank temperatures.
#
Code
Description
N/A
[4-03]
Defines the operation permission of the
booster heater depending on ambient,
domestic hot water temperature or
operation mode of heat pump. This
setting is only applicable in reheat mode
for applications with separate domestic
hot water tank.
Q
0: Booster heater operation is NOT
allowed except for "Disinfection
function" and "Powerful domestic
water heating".
Only use this in case the capacity of
the heat pump can cover the heating
requirements of the house and
domestic hot water over the complete
heating season.
If the outdoor temperature is below
setting [5-03] and [5-02]=1, the
domestic hot water will not be heated.
The domestic hot water temperature
can be maximum the heat pump OFF
temperature.
Q
1: Booster heater operation is
allowed when required.
Q
2: The booster heater is allowed
outside the operation range of the heat
pump for domestic hot water operation.
Booster heater operation is only
allowed if:
Q
Ambient temperature is out of
the operating range: T
a
<[5-03]
or T
a
>35°C, OR
Q
Domestic hot water temperature
is 2°C lower than the heat pump
OFF temperature.
The booster heater will be allowed to
operate when T
a
<[5-03] independent of
the status of [5-02].
If bivalent operation is enabled and
permission signal for auxiliary boiler is
ON, the booster heater will be restricted
even when T
a
<[5-03]. See [C-02].
Q
3: The booster heater is allowed
when the heat pump is NOT active
in domestic hot water operation.
Same as setting 1, but simultaneous
heat pump domestic hot water
operation and booster heater
operation is not allowed.
When setting [4-03]=1/2/3, the booster
heater operation can still be restricted by
the booster heater allowance schedule.
#
Code
Description
