Daikin Altherma 3 R ECH2O - To Insulate the Water Piping; 6 Electrical Installation; About Electrical Compliance; Guidelines When Connecting the Electrical Wiring

6 Electrical installation
Installation manual
22
EBSH/X(B)11+16P30+50DF
Daikin Altherma 3 R ECH₂O
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
See "6.3.3To connect the backup heater power supply"[425].
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
supply"[424].
Power supply (backup
heater)
See "6.3.3To connect the backup heater
power supply"[425].
Backup heater See "6.3.4To connect the backup heater to
the main unit"[427].
Shut-off valve See "6.3.5To connect the shut-off
valve"[427].
Electricity meters See "6.3.6To connect the electricity
meters"[428].
Domestic hot water
pump
See "6.3.7To connect the domestic hot
water pump"[428].
Alarm output See "6.3.8To connect the alarm
output"[429].
Space cooling/heating
operation control
See "6.3.9To connect the space cooling/
heating ON/OFF output"[429].
Changeover to
external heat source
control
See "6.3.10To connect the changeover to
external heat source"[430].
Power consumption
digital inputs
See "6.3.11To connect the power
consumption digital inputs"[430].
Safety thermostat See "6.3.12To connect the safety
thermostat (normally closed
contact)"[431].
Smart Grid See "6.3.13To connect a Smart
Grid"[432].