9 | Electrical installation
Installer reference guide
82
EPGA11~16DAV3(7) + EAVZ16S18+23DA6V(7)+9W
Daikin Altherma 3 H F
4P556075-1A – 2021.09
Model (power supply) Connections to backup heater power supply
*9W (3N~400V)
3N~, 50 Hz
400 V AC
SWB
Q1DI
L1 L2 L3 N
1
2
3
4
5
6
7
8
F1B
II I I
X6M
2
1
K5M
4
3
6
5
14
13
BRN
GRY
BLK
BLU
F1B Overcurrent fuse (field supply). Recommended fuse: 4‑pole; 20A; curve 400V;
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.
9.2.3 To connect the shut-off valve
1 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.
X1M
X2M
X1M
X2M
NO
M2S
NC
M2S
21 28
21 29
2 Fix the cable with cable ties to the cable tie mountings.
9.2.4 To connect the electricity meters
INFORMATION
In case of an electricity meter with transistor output, check the polarity. The positive
polarity MUST be connected to X5M/6 and X5M/4; the negative polarity to X5M/5
and X5M/3.
1 Connect the electricity meters cable to the appropriate terminals as shown in
the illustration below.