6 Electrical installation
Installation manual
22
EBSH/X(B)11+16P30+50DF
Daikin Altherma 3 R ECH
₂
O
4P663483-1A – 2021.11
b
a
a
c
b
a
Drainback connection
b
Spillover connection
c
Hose with non-return valve (1/2")
With installed drainback solar kit (option)
1
Combine the fill and drain kit (option) with the drainback solar
kit (option) to fill the storage tank.
2
Connect the hose with non-return valve to the fill and drain kit.
Follow the steps described in the previous chapter.
5.4.7
To insulate the water piping
The piping in the complete water circuit MUST be insulated to
prevent condensation during cooling operation and reduction of the
heating and cooling capacity.
If the temperature is higher than 30°C and the humidity is higher
than RH 80%, the thickness of the insulation materials should be at
least 20 mm to prevent condensation on the surface of the
insulation.
6
Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
CAUTION
Do NOT push or place redundant cable length in the unit.
NOTICE
The distance between the high voltage and low voltage
cables should be at least 50 mm.
6.1
About electrical compliance
Only for the backup heater of the indoor unit
"6.3.3 To connect the backup heater power supply"
6.2
Guidelines when connecting the
electrical wiring
Tightening torques
Indoor unit:
Item
Tightening torque (N•m)
M4 (X1M)
1.2
M4 (X12M, X15M)
0.88 ±10%
Indoor unit – BUH option:
Item
Tightening torque (N•m)
M4 (X6M) *3V, *6V
2.45 ±10%
M4 (X6M) *9W
1.2
6.3
Connections to the indoor unit
Item
Description
Power supply (main)
See
"6.3.2 To connect the main power
24].
Power supply (backup
heater)
See
"6.3.3 To connect the backup heater
25].
Backup heater
See
"6.3.4 To connect the backup heater to
27].
Shut-off valve
See
"6.3.5 To connect the shut-off
Electricity meters
See
"6.3.6 To connect the electricity
28].
Domestic hot water
pump
See
"6.3.7 To connect the domestic hot
28].
Alarm output
See
Space cooling/heating
operation control
See
"6.3.9 To connect the space cooling/
29].
Changeover to
external heat source
control
See
"6.3.10 To connect the changeover to
30].
Power consumption
digital inputs
See
Safety thermostat
See
thermostat (normally closed
contact)"
31].
Smart Grid
See
32].