4 Quick guide
Operation manual
5
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620244-1B – 2021.02
1234
Advanced user
4.2
Space heating/cooling
To turn space heating/cooling operation ON or OFF
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
C.2
2
Set operation to
On
or
Off
.
To change the desired room temperature
During room temperature control, you can use the room temperature
setpoint screen to read out and adjust the desired room temperature.
1
Go to [1]:
Room
.
Room
1
2
Adjust the desired room temperature.
+
–
21
°C
1
a
b
Room
a
Actual room temperature
b
Desired room temperature
To change the desired leaving water temperature
You can use the leaving water temperature setpoint screen to read
out and adjust the desired leaving water temperature.
1
Go to [2]:
Main zone
or [3]:
Additional zone
.
Main zone
2
Additional zone
3
2
Adjust the desired leaving water temperature.
+
–
20
°C
2
a
b
Main zone
+
–
12
°C
3
a
b
Additional zone
a
Actual leaving water temperature
b
Desired leaving water temperature
To change the weather-dependent curve for the space heating/
cooling zones
1
Go to the applicable zone:
Zone
Go to …
Main zone – Heating
[2.5]
Main zone
>
Heating WD
curve
Main zone – Cooling
[2.6]
Main zone
>
Cooling WD
curve
Additional zone – Heating
[3.5]
Additional zone
>
Heating WD curve
Additional zone – Cooling
[3.6]
Additional zone
>
Cooling WD curve
2
Change the weather-dependent curve.
There are 2 types of WD curves:
slope-offset curve
(default),
and
2-points curve
. If needed, you can change the type in
[2.E]
Main zone
>
WD curve type
. The way to adjust the
curve depends on the type.
Slope-offset curve
Slope.
When slope is changed,
the new preferred temperature at
X1 is unequally higher than the
preferred temperature at X2.
X1
X2
c
d
Y1
Y2
Y3
Y4
a
b
Offset
. When offset is changed,
the new preferred temperature at
X1 is equally higher as the
preferred temperature at X2.
Y1
Y2
Y3
Y4
X1
X2
a
b
c
d