Connecting The Electrical Wiring; In Case Of Dedicated Gas Boiler - Daikin Altherma EJHA04AAV3 Installation Manual

5 Installation
During winter, protect the water piping and shut‑off valves against
freezing by adding heat tape (field supply). If the outdoor
temperature can drop below –20°C and no heat tape is used, it is
recommended to install the shut‑off valves indoors.
5.4

Connecting the electrical wiring

DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
Prevent hazards due to inadvertent resetting of the thermal
cut-out: power to this appliance MUST NOT be supplied
through an external switching device, such as a timer, or
connected to a circuit that is regularly turned ON and OFF
by the utility.
NOTICE
Safety thermostat (normally closed contact). The
outdoor unit does not contain a safety thermostat. Make
sure to install a field-supplied safety thermostat in the heat
emitter system according to the applicable legislation.
However, you cannot connect the feedback signal from the
safety thermostat to the outdoor unit or gas boiler because
there are no terminals for the feedback signal. Because of
this, you also do not have to do any configuration on the
outdoor unit or gas boiler.
In any case, to prevent unnecessary tripping of the safety
thermostat, it is recommended that ...
▪ ... the safety thermostat is automatically resettable.
▪ ... the safety thermostat has a maximum temperature
variation rate of 2°C/min.
▪ ... there is a minimum distance of 2 m between the
safety thermostat and the motorised 3‑way valve
delivered with the domestic hot water tank.
▪ ... the safety thermostat setpoint is at least 15°C
greater than the maximum leaving water temperature
setpoint.
5.4.1

In case of dedicated gas boiler

To connect the electrical wiring on the outdoor
unit
NOTICE
The distance between the high voltage and low voltage
cables should be at least 50 mm.
CAUTION
Do NOT push or place redundant cable length in the unit.
1 Open the top plate and the front plate. See
outdoor unit" on page 9.
2 Insert the wiring at the back of the unit:
a
b
a~d See below
Installation manual
16
"5.1.1 To open the
c
d
3 If you insert cables through the knockout holes c and d:
▪ Punch the knockout holes using a hammer and screw driver.
▪ Insert the cable glands (delivered as accessory).
4 Inside the unit, route the wiring to the switch box as follows:
c
d
3×
a~d See below
5 Inside the switch box, connect the wires to the appropriate
terminals.
6 After connecting all wiring, close the front plate and the top
plate.
Connections in case of dedicated gas boiler
Routing Possible cables (depends on the installed
options)
a Main power supply
Main power supply
(high voltage)
b User interface (mandatory option)
User interface (low
voltage)
c Domestic hot water pump (field supply)
High voltage
d ▪ Interconnection cable between outdoor
unit and gas boiler
Low voltage
▪ External
(option)
▪ LAN adapter (option)
INFORMATION
Bottom plate heater (option). For the routing, see the
installation manual of the bottom plate heater.
Daikin Altherma hybrid monobloc – Heat pump module
a
b
outdoor temperature sensor
EJHA04AAV3
4P530607-1B – 2018.10