Installer reference guide
45
EHBH/X16
Daikin Altherma - Low Temperature Split
4P313776-1 – 2012.05
8 Configuration
Booster heater and heat pump operation
For systems with separate domestic hot water tank (only for
EHBH/X
)
[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)
[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
T
DHW
T
a
[0-0C]
[0-0B]
[0-0E]
[0-0D]
#
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.
N/A
[7-00]
Overshoot temperature. Temperature
difference above the domestic hot water
set point temperature before the booster
heater is turned OFF. The domestic hot
water tank temperature will increase with
[7-00] above selected temperature
set point.
N/A
[7-01]
Hysteresis. Temperature difference
between booster heater ON and booster
heater OFF temperature. The minimum
hysteresis temperature is 2°C.
N/A
[6-00]
The temperature difference determining
the heat pump ON temperature.
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