To Connect The Shut-Off Valve - Daikin Altherma 3 H HT F Installer's Reference Manual

9.3.3 To connect the shut-off valve

EPRA14~18D + ETVH16SU18+23E
Daikin Altherma 3 H HT F
4P644738-1A – 2022.03
Model (power supply)
*6V (6T1: 3~ 230 V)
F1B Overcurrent fuse (field supply). Recommended fuse: 4‑pole; 20 A; curve 400 V;
tripping class C.
K5M Safety contactor (in the lower switch box)
Q1DI Earth leakage circuit breaker (field supply)
SWB Switch box
X6M Terminal (field supply)
NOTICE
Do NOT cut or remove the backup heater power supply cable.
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
1 Top panel
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.
Connections to backup heater power supply
2
K5M
1
SWB
X6M
1
F1B
I I
2
Q1DI
3~, 50 Hz
L1 L2 L3
230 V AC
"7.2.6 To open the indoor
9 Electrical installation
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Installer reference guide
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