Daikin EKHWET90BAV3, Installation Manual

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7 Configuration
Installation manual
15
EKHWET90~120BAV3
R32 Split series – Domestic hot water tank
4P680074-1 – 2021.11
set the exact heater capacity and this will lead to more accurate
energy data. The capacity of the booster heater installed in the
domestic hot water tank is 1,2 kW.
# Code Description
[9.4.1] [6-02] Booster heater capacity [kW]. The
capacity of the booster heater at nominal
voltage.
Range: 0~10 kW
7.2.4 Configuration wizard: Tank
Heat up mode
The domestic hot water can be prepared in 3 different ways. They
differ from each other by the way the desired tank temperature is set
and how the unit acts upon it.
# Code Description
[5.6] [6-0D] Heat up mode :
▪ 0: Reheat only : Only reheat
operation is allowed.
▪ 1: Sc reheat : The domestic
hot water tank is heated according to a
schedule and between the scheduled
heat up cycles, reheat operation is
allowed.
▪ 2: Schedule only : The domestic hot
water tank can ONLY be heated
according to a schedule.
See the operation manual for more details.
Settings for Reheat only mode
During Reheat only mode, the tank setpoint can be set on the user
interface. The maximum allowed temperature is determined by the
following setting:
# Code Description
[5.8] [6-0E] Maximum :
The maximum temperature that users
can select for the domestic hot water.
You can use this setting to limit the
temperature at the hot water taps.
The maximum temperature is NOT
applicable during disinfection function.
To set the heat pump ON hysteresis:
# Code Description
[5.9] [6-00] Heat pump ON hysteresis
▪ 2°C~20°C
INFORMATION
To ensure most optimum operation of the outdoor unit, we
recommend to set the hysteresis to 6°C or higher.
INFORMATION
If Reheat setpoint is outside operation range of the outdoor
unit, then the hysteresis will refer to the the highest
temperature achievable by heat pump operation.
Settings for Schedule only mode and Sc reheat mode
Comfort setpoint
Only applicable when domestic hot water preparation is Schedule
only
or
Sc reheat
. When programming the schedule, you
can make use of the comfort setpoint as a preset value. When you
later want to change the storage setpoint, you only have to do it in
one place.
The tank will heat up until the storage comfort temperature has
been reached. It is the higher desired temperature when a storage
comfort action is scheduled.
Additionally, a storage stop can be programmed. This feature puts a
stop to tank heating even if the setpoint has NOT been reached.
Only program a storage stop when tank heating is absolutely
undesirable.
# Code Description
[5.2] [6-0A] Comfort setpoint :
▪ 30°C~[6‑0E]°C
Eco setpoint
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 Description
[5.3] [6-0B]
Eco setpoint
:
▪ 30°C~min(50,[6‑0E])°C
Reheat setpoint
Desired reheat tank temperature , used:
▪ in Schedule + reheat mode, during reheat mode: the
guaranteed minimum tank temperature is set by the Reheat
setpoint
minus the reheat hysteresis. If the tank temperature
drops below this value, the tank is heated up.
# Code Description
[5.4] [6-0C] Reheat setpoint :
▪ 30°C~min(50,[6‑0E])°C
Hysteresis (reheat hysteresis)
Applicable when domestic hot water preparation is scheduled
+reheat. When the tank temperature drops below the reheat
temperature minus the reheat hysteresis temperature, the tank heats
up to the reheat temperature.
# Code Description
[5.A] [6-08] Reheat hysteresis
▪ 2°C~20°C
INFORMATION
To ensure most optimum operation of the outdoor unit, we
recommend to set the hysteresis to 6°C or higher.
INFORMATION
If Reheat setpoint is outside operation range of the outdoor
unit, then the hysteresis will refer to the the highest
temperature achievable by heat pump operation.
7.3 Weather-dependent curve
7.3.1 What is a weather-dependent curve?
Weather-dependent operation
The unit operates 'weather dependent' if the desired tank
temperature is determined automatically by the outdoor temperature.
If the outdoor temperature drops or rises, the unit compensates
instantly. Thus, the unit does not have to wait for feedback by the
user to increase or decrease the target temperature of the tank.
Because it reacts more quickly, it prevents high rises and drops of
the water temperature at tap points.
Advantage
Weather-dependent operation reduces energy consumption.