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

9 | Electrical installation
Installer reference guide
124
EPRA14~18D + ETVH/X16S18+23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03
A
1245
S6S S7S S8S
S9S
3
B
A
B
A8P
X801M
a
1 2 3 4 5
a Installation of EKRP1AHTA is required.
3 Fix the cable with cable ties to the cable tie mountings.
9.3.10 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.
—
1 Open the following (see "7.2.6To open the indoor unit"[469]):
1 Top panel
1
2
3
2 User interface panel
3 Upper switch box 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.