To Connect The Low Pressure Switch On The Central Water Loop Side - Daikin Altherma 3 WS Installation Manual

Q4L
1×
3 Fix the cable with cable ties to the cable tie mountings.
NOTICE
Make sure to select and install the safety thermostat
according to the applicable legislation.
In any case, to prevent unnecessary tripping of the safety
thermostat, we recommend the following:
▪ The safety thermostat is automatically resettable.
▪ The safety thermostat has a maximum temperature
variation rate of 2°C/min.
▪ There is a minimum distance of 2 m between the safety
thermostat and the 3‑way valve.
INFORMATION
ALWAYS configure the safety thermostat after it is
installed. Without configuration, the unit will ignore the
safety thermostat contact.
INFORMATION
The preferential kWh rate power supply contact is
connected to the same terminals (X5M/9+10) as the safety
thermostat. Thus, the
preferential kWh rate power supply OR a safety
thermostat.
5.13 To connect the low pressure
switch on the central water loop
side
Depending on the applicable legislation, you might have to install a
low pressure switch (field supply) on the central water loop side.
NOTICE
Mechanical. We recommend to use a mechanical low
pressure switch for the central water loop circuit. If an
electrical low pressure switch is used, capacitive currents
might disturb the flow switch operation causing an error on
the unit.
EWSAH/X06UDA9W
Daikin Altherma 3 WS
4P675760-1 – 2021.10
2×
X5M
1×
system can have EITHER
5 Electrical installation
NOTICE
Before disconnecting. If you need to remove or
disconnect the low pressure switch from the central water
loop circuit, first set [C‑0B]=0 to indicate that no low
pressure switch is installed in the central water loop circuit.
If not, removing or disconnecting the low pressure switch
will cause an error.
Wires: 2×0.75 mm²
Set overview field setting [C-0B]=1.
▪ If [C-0B]=0 (central water loop low pressure switch not
installed), the unit does not check the input.
▪ If [C-0B]=1 (central water loop low pressure switch
installed), the unit checks the input. If the input is "open",
error EJ-01 occurs.
1 Open the following (see "3.2.1 To open the indoor
1 Top panel
2 User interface panel
3 Installer switch box cover
2 Connect the cable of the central water loop low pressure switch
as shown in the illustration below.
S1PL
P<
1×
a Cut loop wires coming from A16P/X13A/1+4 (factory
mounted)
b Splicing connectors (field supply)
c Wires of the central water loop low pressure switch cable
(field supply)
unit" [ 4 7]):
1
3
2
2×
1×
A16P/X13A/1+4
a b c
Installation manual
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