6 Electrical installation
Installation manual
16
ETBH/X16E
Daikin Altherma 3 H HT W
4P644727-1B – 2022.03
NOTICE
Do NOT cut or remove the backup heater power supply
cable.
6.3.3
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
"4.2.1 To open the indoor unit"
7]):
1
Front panel
1
2
3
2
Switch box cover
3
Switch box
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.
B
C
A
A
B
C
A
A
M2S
NO
NC
C
5 6
X2M
C
21 28
X2M
C
5 6
X2M
C
21 29
X2M
B
X2M
3
Fix the cable with cable ties to the cable tie mountings.
6.3.4
To connect the electricity meters
Wires: 2 (per meter)×0.75 mm²
Electricity meters: 12 V DC pulse detection (voltage supplied
by PCB)
[9.A]
Energy metering
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
Open the following (see
"4.2.1 To open the indoor unit"
7]):
1
Front panel
1
2
3
2
Switch box cover
3
Switch box
2
Connect the electricity meters cable to the appropriate terminals
as shown in the illustration below.
B
C
A
A
6 5 4 3
S3S
S2S
C
B
X5M
3
4
X5M
6
5
3
Fix the cable with cable ties to the cable tie mountings.
6.3.5
To connect the domestic hot water pump
Wires: (2+GND)×0.75 mm²
DHW pump output. Maximum load: 2 A (inrush), 230 V AC,
1 A (continuous)
[9.2.2]
DHW pump
[9.2.3]
DHW pump schedule
1
Open the following (see
"4.2.1 To open the indoor unit"
7]):
Summary of Contents for ETBH16E 6V Series
Page 39: ......
