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

9 | Electrical installation
Installer reference guide
117
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
4P620241-1 – 2020.06
9.2.13 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 service cover. See "To open the outdoor unit"[472].
2 Connect the safety thermostat (normally closed) cable to the appropriate
terminals as shown in the illustration below.
X5M.14
X5M.13
Q4L
13 14
X5M
13 14
X5M
a
a Remove jumper
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
motorized 3‑way valve delivered with the domestic hot water tank.
NOTICE
Error. If you remove the jumper (open circuit) but do NOT connect the safety
thermostat, stop error 8H-03 will occur.