5 Operation
Operation manual
11
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688015-1C – 2022.09
5.4
Turning operation ON or OFF
5.4.1
Visual indication
Certain functionalities of the unit can be enabled or disabled
separately. If a functionality is disabled, the corresponding
temperature icon in the home screen will be greyed out.
Room temperature control
55
21
35
45
a
55
21
35
45
b
a
Room temperature control ON
b
Room temperature control OFF
Space heating/cooling operation
55
21
35
45
c
55
21
35
45
d
c
Space heating/cooling operation ON
d
Space heating/cooling operation OFF
5.4.2
To turn ON or OFF
Room temperature control
1
Go to [C.1]:
Operation
>
Room
.
Operation
Room
Space heating/cooling
On
On
C.1
2
Set operation to
On
or
Off
.
Space heating/cooling operation
NOTICE
Room frost protection.
Even if you turn OFF space
heating/cooling operation ([C.2]:
Operation
>
Space
heating/cooling
), room frost protection operation –if
enabled– can still activate. However, for leaving water
temperature control and external room thermostat control,
the protection is NOT guaranteed.
NOTICE
Water pipe freeze prevention.
Even if you turn OFF
space heating/cooling operation ([C.2]:
Operation
>
Space heating/cooling
), water pipe freeze prevention –
if enabled– will remain active.
1
Go to [C.2]:
Operation
>
Space heating/cooling
.
Operation
Space heating/cooling
On
On
Room
C.2
2
Set operation to
On
or
Off
.
5.5
Reading out information
To read out information
1
Go to [8]:
Information
.
Possible read-out information
In menu…
You can read out…
[8.1]
Energy data
Produced energy, consumed
electricity, and consumed gas
[8.2]
Malfunction history
Malfunction history
[8.3]
Dealer information
Contact/helpdesk number
[8.4]
Sensors
Room temperature, outside
temperature, leaving water
temperature,…
[8.5]
Actuators
Status/mode of each actuator
Example:
Unit pump ON/OFF
[8.6]
Operation modes
Current operation mode
Example:
Defrost/oil return
mode
[8.7]
About
Version information about the
system
[8.8]
Connection status
Information about the connection
status of the unit, the room
thermostat and WLAN.
[8.9]
Running hours
Running hours of specific system
components
5.6
Space heating/cooling control
5.6.1
Setting the space operation mode
About space operation modes
Your unit can be a cooling or a heating/cooling model:
▪ If your unit is a cooling model, it can cool down a space.
▪ If your unit is a heating/cooling model, it can both heat up and cool
down a space. You have to tell the system which operation mode
to use.
To tell the system which space operation to use, you can:
You can…
Location
Check which space operation mode is
currently used.
Home screen
Set the space operation mode permanently. Main menu
Restrict automatic changeover according to
a monthly schedule.
About space operation modes
Your unit can be a cooling or a heating/cooling model:
▪ If your unit is a cooling model, it can cool down a space.
▪ If your unit is a heating/cooling model, it can both heat up and cool
down a space. You have to tell the system which operation mode
to use.
