Electrical Installation; About Electrical Compliance - Daikin Altherma 3 H HT W Installationsanleitung

Glycol setting
NOTICE
If glycol is present in the system, setting [E-0D] must be
set to 1. If the glycol setting is NOT set correctly, the liquid
inside the piping can freeze.
Freeze protection by freeze protection valves
About freeze protection valves
When no glycol is added to the water, you can use freeze protection
valves to drain the water from the system before it can freeze.
▪ Install freeze protection valves (field supply) at all lowest points of
the field piping.
▪ Normally closed valves (located indoors near the piping entry/exit
points) can prevent that all water from indoor piping is drained
when the freeze protection valves open.
NOTICE
When freeze protection valves are installed, set the
minimum cooling setpoint (default=7°C) at least 2°C higher
than the maximum opening temperature of the freeze
protection valve. If lower, freeze protection valves can
open during cooling operation.
For more information, see the installer reference guide.
4.2.4 To fill the domestic hot water tank
See the installation manual of the domestic hot water tank.
4.2.5 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.
Outdoor water piping insulation
See the installation manual of the outdoor unit, or the installer
reference guide.
5

Electrical installation

DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
INFORMATION
When installing field supply or option cables, foresee
sufficient cable length. This will make it possible to open
the switch box and gain access to other components
during service.
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.
5.1

About electrical compliance

Only for the backup heater of the indoor unit
See "To connect the backup heater power
ETBH/X16DF6V+9W
Daikin Altherma 3 H HT W
4P586453-1C – 2020.10
supply" [ 4 12].
5.2 Guidelines when connecting the
electrical wiring
Tightening torques
Indoor unit:
Item
M4 (X1M, X2M, X5M)
M4 (earth)
5.3 Connections to the indoor unit
Item
Power supply (main) See "To connect the main power
supply" [ 4 11].
Power supply (backup See "To connect the backup heater power
supply" [ 4 12].
heater)
Shut-off valve See "To connect the shut-off
Electricity meters See "To connect the electricity
meters" [ 4 14].
Domestic hot water See "To connect the domestic hot water
pump" [ 4 14].
pump
Alarm output See "To connect the alarm
Space cooling/heating See "To connect the space cooling/heating
operation control ON/OFF
Changeover to See "To connect the changeover to
external heat source external heat
control
Power consumption See "To connect the power consumption
inputs" [ 4 16].
digital inputs digital
Safety thermostat See "To connect the safety thermostat
(normally closed
Room thermostat See:
(wired or wireless)
▪ Installation manual of the wireless
▪ Installation manual of the wired
▪ Addendum
Wires: 0.75 mm²
Maximum running current: 100 mA
For the main zone:
▪ [2.9] Control
▪ [2.A] Thermostat type
For the additional zone:
▪ [3.A] Thermostat type
▪ [3.9] (read-only) Control
5 Electrical installation
Tightening torque (N•m)
1.2~1.5
Description
valve" [ 4 13].
output" [ 4 14].
output" [ 4 15].
source" [ 4 15].
contact)" [ 4 16].
room thermostat
room thermostat (digital
analogue) + multi-zoning base
unit
▪ Connection of the wired room
thermostat (digital or analogue)
to the multi-zoning base unit
▪ Connection of the multi-zoning
base unit to the indoor unit
▪ For cooling/heating operation,
you also need option EKRELAY1
book for optional
equipment
Installation manual
or
9