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Configuration
Installer reference guide
154
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06
Pump operation mode
When the space heating/cooling operation is OFF, the pump is always OFF. When
space heating/cooling operation is ON, you have the choice between these
operation modes:
#
Code
Description
[4.5]
[F–0D]
Pump operation mode
:
▪
0
Continuous
: Continuous pump operation,
regardless of thermo ON or OFF condition.
Remark:
Continuous pump operation requires
more energy than sample or request pump
operation.
a
b
c
d
b
c
a
Space heating/cooling control
b
Off
c
On
d
Pump operation
[4.5]
[F-0D]
▪
1
Sample
: The pump is ON when there is
heating or cooling demand as the leaving water
temperature has not yet reached the desired
temperature yet. When thermo OFF condition
occurs, the pump runs every 3 minutes to
check the water temperature and demand
heating or cooling if necessary.
Remark:
Sample is ONLY available in leaving water
temperature control.
a
b
d
e
f
c
g
b
c
a
Space heating/cooling control
b
Off
c
On
d
LWT temperature
e
Actual
f
Desired
g
Pump operation
Summary of Contents for EWAA0 DAV3P Series
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