10
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Configuration
Installer reference guide
124
E EHFH03S18D
Daikin Altherma 3 R F
4P596806-1C – 2022.09
Space heating/cooling: Pump operation mode
#
Code
Description
[A.2.1.9]
[F-0D]
Pump operation mode
▪
0 (
Continuous
)
▪
1 (
Sample
)
▪
2 (
Request
)
When the space heating/cooling control is OFF by the user interface, the pump is
always OFF. When the space heating/cooling control is ON, you can select the
desired pump operation mode (only applicable during space heating/cooling).
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 (user interface)
b
OFF
c
ON
d
Pump operation
Sample
:
The pump is ON when there is a heating or cooling demand as the leaving water
temperature has not reached the desired temperature yet. When thermo OFF
condition occurs, the pump runs every 5 minutes to check the water temperature
and demand heating or cooling if necessary.
Remark:
Sample is NOT available in external room thermostat control or room
thermostat control.
a
b
d
e
f
c
g
b
c
a
Space heating/cooling control (user interface)
b
OFF
c
ON
d
LWT temperature
e
Actual
f
Desired
g
Pump operation
Request
:
Pump operation based on request.
Example:
Using a room thermostat creates a thermo ON/OFF condition. When
there is no demand, the pump is OFF.
Remark:
Request is NOT available in leaving water temperature control.
