Daikin Altherma 3 HT - To Connect the Shut-Off Valve

9 | Electrical installation
Installer reference guide
117
EPRA14~18D + ETVH/X16S18+23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03
NOTICE
Do NOT cut or remove the backup heater power supply cable.
9.3.3 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 "7.2.6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 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.
A
M2S