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Electrical installation
Installer reference guide
104
EPRA14~W1 + ET9W
Daikin Altherma 3 H HT F
4P587503-1A – 2020.01
A
2
Q3L
1
B
A
B
X5M
1 2
3
Fix the cable with cable ties to the cable tie mountings.
INFORMATION
Installation of a safety thermostat (field supply) is required for the main zone,
otherwise the unit will NOT operate.
NOTICE
A safety thermostat MUST be installed on the main zone to avoid too high water
temperatures in this zone. The safety thermostat is typically a thermostatically
controlled valve with a normally closed contact. When the water temperature in the
main zone is too high, the contact will open and the user interface will show a 8H‑02
error. ONLY the main pump will stop.
Additional zone
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
)
4
Connect the safety thermostat (normally closed) cable to the appropriate
terminals as shown in the illustration below.
Summary of Contents for Altherma 3 H HT EPRA18DAW1
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