To Connect The Shut-Off Valve - Daikin EPRA18DAV3 Installer's Reference Manual

8.3.3 To connect the shut-off valve

EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
Model (power supply)
*6V (6T1: 3~ 230 V)
*9W (3N~ 400 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.
For more information, see the installer reference guide.
8
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Connections to backup heater power supply
2 4
K5M
1 3
SWB
X6M
1 3
F1B
I I I
2 4
Q1DI
3~, 50 Hz
L1 L2 L3
230 V AC
2 4
K5M
1 3
SWB
X6M
1 3
F1B
I I I
2 4
Q1DI
3N~, 50 Hz
L1 L2 L3
400 V AC
Electrical installation
6 14
5 13
5 7
I
6 8
6 14
5 13
5 7
I
6 8
N
Installer reference guide
105