To Connect The Safety Thermostat (Normally Closed Contact) - Daikin Altherma 3 H MT ECH2O Installer's Reference Manual

9 | Electrical installation

9.3.12 To connect the safety thermostat (normally closed contact)

Installer reference guide
132
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
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 "9.3.1 To connect the electrical wiring to the indoor
"7.2.5 To open the indoor
7
Q4L
A
4
unit" [ 72]):
1
8
B
unit" [ 4 116].
EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1 – 2021.07
4
3
2