To Connect The Safety Thermostat (Normally Closed Contact) - Daikin Altherma 3 R ECH2O EHSHB-E Series Installation Manual

6 Electrical installation
1
2
3 Connect the power consumption digital inputs cable to the
appropriate terminals as shown in the illustration below.
A
B
A8P
4 Fix the cable with cable ties to the cable tie mountings. General
information, see "6.3.1 To connect the electrical wiring to the
unit" [ 4 18].
indoor
6.3.12 To connect the safety thermostat
(normally closed contact)
Wires: 2×0.75 mm²
Maximum length: 50 m
Safety thermostat contact: 16 V DC detection (voltage
supplied by PCB). The voltage-free contact shall ensure the
minimum applicable load of 15 V DC, 10 mA.
Installation manual
26
3
1 2 3 4 5
A
a
B
[9.8.1]=3 (Benefit kWh power supply = Safety
thermostat)
1 Open the following (see "4.2.1 To open the indoor
1 User interface panel
2 Switch box
3 Switch box cover
4 Top cover
2 Connect the safety thermostat (normally closed) cable to the
appropriate terminals as shown in the illustration below.
Note: The jumper wire (factory-mounted) must be removed from the
respective terminals.
A
B
7 8
X 5M 1
3 Fix the cable with cable ties to the cable tie mountings. General
information, see "6.3.1 To connect the electrical wiring to the
unit" [ 4 18].
indoor
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.
NOTICE
Error. If you remove the jumper (open circuit) but do NOT
connect the safety thermostat, stop error 8H-03 will occur.
unit" [ 4 10]):
4
3
2
1
7
8
Q4L
A
B
EHSH/X(B)04+08P30+50EF
Daikin Altherma 3 R ECH₂O
4P678717-1 – 2021.11