Domestic Hot Water Control: Advanced - Daikin ERHQ011BA Installer's Reference Manual

Changeover settings related to the outdoor temperature (only when
automatic is selected):
# Code
[A.3.3.1] [4-02] Space heating OFF temp. If the outdoor
temperature raises above this value, the
operation mode will change to cooling:
[A.3.3.2] [F-01] Space cooling On temp. If the outdoor
temperature drops below this value, the
operation mode will change to heating:
10~35°C (default: 20°C)
Changeover settings related to the indoor temperature. Only
applicable when Automatic is selected and the system is configured
in room thermostat control with 1 leaving water temperature zone
and quick heat emitters.
N/A [4-0B] Hysteresis: Ensures that changeover is
only done when necessary. Example: the
space operation mode only changes
from cooling to heating when the room
temperature drops below the desired
heating temperature subtracted by the
hysteresis.
1~10°C, step 0.5°C (default: 1°C)
N/A [4-0D] Offset: Ensures that the active desired
room temperature can be reached.
Example: if heating to cooling
changeover would occur below the
desired room temperature in heating, this
desired room temperature could never
be reached.
1~10°C, step 0.5°C (default: 1°C)
N/A [4-0E] Guard timer: Minimum time that the
system runs in a certain space operation
mode. This prevents too frequent
changeover between heating and cooling
mode.
0~120 minutes, step 15 minutes (default:
30 minutes)

8.3.2 Domestic hot water control: advanced

Preset tank temperatures
Only applicable when domestic hot water preparation is scheduled or
scheduled + reheat.
You can define preset tank temperatures:
storage economic
storage comfort
reheat
Preset values make it easy to use the same value in the schedule. If
you later want to change the value, you only have to do it in 1 place
(see also operation manual and/or user reference guide).
Storage comfort: Only applicable if the desired tank temperature is
NOT weather dependent. The storage comfort temperature denotes
the higher desired tank temperature, where the tank heat up cycle is
prioritized till the reheat set point. It is the desired temperature when
a storage comfort action is scheduled (preferably during night).
# Code
[7.4.3.1] [6-0A] 30~80°C (default: 60°C)
Storage eco: The storage economic temperature denotes the lower
desired tank temperature. It is the desired temperature when a
storage economic action is scheduled (preferably during day).
# Code
[7.4.3.2] [6-0B] 30~80°C (default: 45°C)
EHBH/X16
Daikin Altherma - Low Temperature Split
4P313776-1 – 2012.05
Description
EHBH/X04+08 and EHVH/X04+08:
14~25°C (default: 25°C)
EHBH/X16 and EHVH/X16:
14~35°C (default: 35°C)
Description
Description
Reheat: The desired reheat tank temperature is used:
in scheduled + reheat mode, as guaranteed minimum tank
temperature: if the tank temperature drops below this value, the
tank is heated up.
during storage comfort, to prioritize the domestic hot water
preparation. When the tank temperature raises above this value,
domestic hot water preparation and space heating/cooling are
executed sequentially.
# Code
[7.4.3.3] [6-0C] 30~50°C (default: 45°C)
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 scheduled+reheat 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.
# Code
[A.4.2.2] N/A Weather dependent desired tank
temperature is:
8 Configuration
Description
Description
Absolute (default): disabled. All
desired tank temperature are NOT
weather dependent.
Weather dep.: enabled.
scheduled or scheduled+reheat
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.
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