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Application guidelines
Installer reference guide
52
EGSAH/X06+10UDA9W
Daikin Altherma 3 GEO
4P598592-1A – 2019.12
5.9 Setting up the brine low pressure switch
Depending on the applicable legislation, you might have to install a brine low
pressure switch (field supply).
The brine low pressure switch can be used to notify the user when there is a leak in
the brine circuit. The switch (normally closed) is triggered when the pressure in the
brine circuit is lower than the threshold value of the switch.
NOTICE
Mechanical.
We recommend to use a mechanical brine low pressure switch. If an
electrical brine low pressure switch is used, capacitive currents might disturb the
flow switch operation causing an error on the unit.
NOTICE
Before disconnecting.
If you want to remove or disconnect the brine low pressure
switch, first set [C‑0B]=0 (brine low pressure switch not installed). If not, this causes
an error.
If [C-0B]=1 (brine low pressure switch installed), and the brine low pressure switch
is triggered, then:
Heat pump operation
Stops with error.
When the pressure in the brine circuit is
restored, a power restart of the system
is required.
Emergency mode
Activates
10-day brine pump operation
Passive cooling
Brine pump actuator test run
Interrupts
If [C-0B]=1 (brine low pressure switch installed), and the connection to the ACS
digital I/O PCB is malfunctioning, then:
Heat pump operation
Stops with error.
When the malfunction is over, the unit
resumes operation.
Emergency mode
Activates but no heating is possible
because the backup heater is
disconnected from the ACS digital I/O
PCB.
10-day brine pump operation
Passive cooling
Brine pump actuator test run
Interrupts
Setup
"8.2.11 To connect the brine low pressure switch"
Configuration
193].
Содержание Altherma 3 GEO
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