6 Energy saving tips
Operation manual
15
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620244-1B – 2021.02
You feel …
Fine-tune with slope and
offset:
At regular outdoor
temperatures …
At cold outdoor
temperatures …
Slope
Offset
Cold
Cold
—
↑
Cold
Hot
↓
↑
Hot
OK
↑
↓
Hot
Cold
↑
↓
Hot
Hot
—
↓
To fine-tune the weather-dependent curve: 2-points curve
The following table describes how to fine-tune the weather-
dependent curve of a zone:
You feel …
Fine-tune with
setpoints:
At regular outdoor
temperatures …
At cold outdoor
temperatures …
Y2
(a)
Y1
(a)
X1
(a)
X2
(a)
OK
Cold
↑
—
↑
—
OK
Hot
↓
—
↓
—
Cold
OK
—
↑
—
↑
Cold
Cold
↑
↑
↑
↑
Cold
Hot
↓
↑
↓
↑
Hot
OK
—
↓
—
↓
Hot
Cold
↑
↓
↑
↓
Hot
Hot
↓
↓
↓
↓
(a)
See
6
Energy saving tips
Tips about room temperature
▪ Make sure the desired room temperature is NEVER too high (in
heating mode) or too low (in cooling mode), but ALWAYS
according to your actual needs. Each saved degree can save up
to 6% of heating/cooling costs.
▪ Do NOT increase/decrease the desired room temperature to
speed up space heating/cooling. The space will NOT heat up/cool
down faster.
▪ When your system layout contains slow heat emitters (example:
underfloor heating), avoid large fluctuation of the desired room
temperature and do NOT let the room temperature drop too low/
rise too high. It will take more time and energy to heat up/cool
down the room again.
▪ Use a weekly schedule for your normal space heating or cooling
needs. If necessary, you can easily deviate from the schedule:
▪ For shorter periods: You can overrule the scheduled room
temperature until the next scheduled action.
Example:
When
you have a party, or when you are leaving for a couple of hours.
▪ For longer periods: You can use the holiday mode.
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.
▪ Regularly check if the water pressure is above 1 bar.
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.
WARNING
The appliance shall be stored so as to prevent mechanical
damage and in a well-ventilated room without continuously
operating ignition sources (example: open flames, an
operating gas appliance or an operating electric heater).
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Do NOT use cleaning materials or means to accelerate
the defrosting process other than those recommended
by the manufacturer.
▪ Be aware that the refrigerant inside the system is
odourless.
WARNING
The refrigerant inside the unit is mildly flammable, but
normally does NOT leak. If the refrigerant leaks in the
room and comes in contact with fire from a burner, a
heater, or a cooker, this may result in fire, or the formation
of a harmful gas.
Turn off any combustible heating devices, ventilate the
room, and contact the dealer where you purchased the
unit.
Do NOT use the unit until a service person confirms that
the part from which the refrigerant leaked has been
repaired.
8
Troubleshooting
Contact
For the symptoms listed below, you can try to solve the problem
yourself. For any other problem, contact your installer. You can find
the contact/helpdesk number via the user interface.
1
Go to [8.3]:
Information
>
Dealer information
.
8.1
To display the help text in case of a
malfunction
In case of a malfunction, the following will appear on the home
screen depending on the severity: