Daikin Altherma 3 R ECH2O - To Connect the Safety Thermostat (Normally Closed Contact)

6 Electrical installation
Installation manual
31
EBSH/X(B)11+16P30+50DF
Daikin Altherma 3 R ECH₂O
4P663483-1A – 2021.11
1
2
3
3 Connect the power consumption digital inputs cable to the
appropriate terminals as shown in the illustration below.
A
B
B
A
A8P
M108X
1
2
3
4
5
1 2
4
5
S6S
S7S
S8S
S9S
3
a
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
indoor unit"[423].
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.
[9.8.1]=3 (Benefit kWh power supply = Safety
thermostat)
1 Open the following (see "4.2.1To open the indoor unit"[415]):
1 User interface panel
1
3
4
2
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
A
B
7 8
X 5 M1
8
Q4L
7
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
indoor unit"[423].
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.