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Electrical installation
Installer reference guide
125
EPRA14~W1 + ETSH/X(B)16P30+50EF
Daikin Altherma 3 H HT ECH₂O
4P679467-1 – 2022.02
2
Connect both connection cables from the backup heater EKECBU* to the
appropriate connectors as shown in the illustration below.
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 unit"
117].
9.3.5 To connect the shut-off valve
INFORMATION
Shut-off valve usage example.
In case of one LWT zone, and a combination of
underfloor heating and heat pump convectors, install a shut-off valve before the
underfloor heating to prevent condensation on the floor during cooling operation.
Wires: 2×0.75 mm²
Maximum running current: 100 mA
230 V AC supplied by PCB
[2.D]
Shut off valve
1
Open the following (see
"7.2.5 To open the indoor unit"
1
User interface panel
1
3
4
2
2
Switch box
3
Switch box cover
4
Top cover
2
Connect the valve control cable to the appropriate terminals as shown in the
illustration below.
NOTICE
Wiring is different for a NC (normally closed) valve and a NO (normally open) valve.