6 Energy saving tips
Operation manual
13
EKHWET90~120BAV3
R32 Split series – Domestic hot water tank
4P680075-1B – 2022.02
5.9
Priority schedule
Air Conditioning or domestic hot water priority
When multiple indoor units are connected to the outdoor unit (refer
to Installer Reference Guide for details), the user can set on the user
interface for each month whether to put
DHW
or Air Conditioning (
A/C
)
as priority. This will determine how the outdoor unit will react in case
multiple indoor units requested operation at the same time:
▪ If
DHW
is set as priority, outdoor unit can decide to operate only for
DHW
, while
A/C
operation is put on hold. In this case, once
DHW
operation is finished, outdoor unit can switch to
A/C
operation.
▪ If
A/C
is set as priority, outdoor unit can decide to operate only
A/
C
, in which case booster heater can start for
DHW
production. Once
A/C
operation is finished, outdoor unit can switch to
DHW
.
To select the Priority schedule
1
Go to [5.F]:
Tank
>
Priority schedule
.
2
Select which month to set.
Priority schedule
February
March
January
DHW
DHW
DHW
3
Select the priority schedule of that month.
Priority schedule
February
March
January
DHW
DHW
A/C
INFORMATION
If the booster heater always takes over the DHW heat load
due to setting Priority schedule to AC, electricity
consumption will be considerably higher. For the months
where space heating/cooling is less important, it is
recommended to set the Priority schedule to DHW.
INFORMATION
If DHW is set as priority and frequent DHW operation is
expected, there is risk for comfort problem due to
interruption of AC operation. For the months where space
heating/cooling is more important, it is recommended to set
the Priority schedule to AC.
5.10
Operation mode
Choosing Operation mode for DHW
Depending on whether early booster heater operation is desired, two
DHW
operation modes can be chosen as follows:
▪
Efficient
: Booster heater only allowed when outdoor unit is
unable to perform
DHW
(e.g. water temperature is outside operation
range of outdoor unit, or outdoor unit decides to only perform
A/C
13])
▪
Quick
: Booster heater is allowed either after a certain amount of
time has passed since start of
DHW
operation (refer below) or when
outdoor unit is unable to perform
DHW
.
Quick mode timer
When
Quick
mode is chosen, user can choose between 3 preset
timers after which Booster heater can activate since the start of
DHW
operation:
▪ Turbo: 10 minutes
▪ Normal: 20 minutes
▪ Economic: 30 minutes
When
Efficient
mode is chosen, the
Quick mode timer
is not
used.
6
Energy saving tips
Tips about DHW tank temperature
▪ Use a weekly schedule for your normal domestic hot water needs
(ONLY in scheduled mode).
▪ Also, by setting the heat up action to only scheduled action,
interruption to AC operation will be limited to the specific moments
where space heating/cooling demand is less important.
▪ Program to heat up the DHW tank to a preset value (
Comfort
=
higher DHW tank temperature) during the night, because then
space heating/cooling demand is lower (example: between
22:00 and 04:00).
▪ If heating up the DHW tank once at night is NOT sufficient,
program to additionally heat up the DHW tank to a preset value
(
Eco
= lower DHW tank temperature) during the day or the time
when occupants are not present (example: between 09:00 and
15:00).
▪ Make sure the desired DHW tank temperature is NOT too high.
Example:
After installation, lower the DHW tank temperature daily
by 1°C and check if you still have enough hot water.
7
Maintenance and service
7.1
Overview: Maintenance and
service
The installer has to perform a yearly maintenance. You can find the
contact/helpdesk number via the user interface.
1
Go to [8.3]:
Information
>
Dealer information
.
As end user, you have to:
▪ Keep the area around the unit clean.
▪ Keep the user interface clean with a soft damp cloth. Do NOT use
any detergents.
Refrigerant
This product contains fluorinated greenhouse gases. Do NOT vent
gases into the atmosphere.
Refrigerant type: R32
Global warming potential (GWP) value: 675
NOTICE
Applicable legislation on
fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
equivalent.
Formula to calculate the quantity in CO
2
equivalent
tonnes:
GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
Please contact your installer for more information.
WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.
