Preparing Electrical Wiring; About Preparing Electrical Wiring; About Preferential Kwh Rate Power Supply; Overview Of Electrical Connections Except External Actuators - Daikin EGSQH10S18AA9W Installer's Reference Manual

6 Preparation
6.4

Preparing electrical wiring

6.4.1

About preparing electrical wiring

INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
WARNING
▪ If the power supply has a missing or wrong N-phase,
equipment might break down.
▪ Establish proper earthing. Do NOT earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earthing may cause electrical shock.
▪ Install the required fuses or circuit breakers.
▪ Secure the electrical wiring with cable ties so that the
cables do NOT come in contact with sharp edges or
piping, particularly on the high-pressure side.
▪ Do NOT use taped wires, stranded conductor wires,
extension cords, or connections from a star system.
They can cause overheating, electrical shock or fire.
▪ Do NOT install a phase advancing capacitor, because
this unit is equipped with an inverter. A phase
advancing capacitor will reduce performance and may
cause accidents.
WARNING
▪ All wiring must be performed by an authorized
electrician and must comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on the site and all electrical
construction must
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
6.4.2

About preferential kWh rate power supply

Electricity companies throughout the world work hard to provide
reliable electric service at competitive prices and are often
authorized to bill clients at benefit rates. E.g. time-of-use rates,
seasonal rates, Wärmepumpentarif in Germany and Austria, ...
This equipment allows for connection to such preferential kWh rate
power supply delivery systems.
Consult with the electricity company acting as provider at the site
where this equipment is to be installed to know whether it is
appropriate to connect the equipment in one of the preferential kWh
rate power supply delivery systems available, if any.
When the equipment is connected to such preferential kWh rate
power supply, the electricity company is allowed to:
▪ interrupt power supply to the equipment for certain periods of time;
▪ demand that the equipment only consumes a limited amount of
electricity during certain periods of time.
The indoor unit is designed to receive an input signal by which the
unit switches into forced off mode. At that moment, the unit
compressor will not operate.
Whether the power supply is interrupted or not, the wiring to the unit
is different.
Installer reference guide
22
comply with the applicable
6.4.3 Overview of electrical connections except
external actuators
General remark about abbreviations in this and the following
chapters:
▪ E1 = Refrigerant cycle components (e.g. compressor) and brine
piping parts (e.g. brine pump)
▪ E2 = All other components except backup heater
▪ E3 = Backup heater
Normal power Preferential kWh rate power supply
supply
Power supply is
NOT interrupted
a
0
0 58 0
1 5 0
1+2 1+2 3
During preferential
kWh rate power
supply activation,
power supply is NOT
interrupted. E1 is
turned off by the
control.
Remark: The
electricity company
MUST always allow
the power
consumption of E2
and E3.
a Normal power supply
b Preferential kWh rate power supply
1 Power supply for E1 and E3
2 Power supply for E2
3 Preferential kWh rate power supply (voltage free contact)
NOTICE
The setting brine freezing temperature can be modified
and the read out is correct in [A.6.9] Brine freezeup temp
ONLY after having accessed menu [A.8] Overview
settings.
This setting can ONLY be modified and/or saved and the
read out is ONLY correct if the communication between
hydro module and compressor module is present. The
communication between hydro module and compressor
module is NOT guaranteed and/or applicable if:
▪ error "U4" appears on the user interface,
▪ the heat pump module is connected to preferential kWh
rate power supply where power supply is interrupted
and preferential kWh rate power supply is activated.
6.4.4 Overview of electrical connections for
external and internal actuators
The following illustration shows the required field wiring.
Power supply is
interrupted
b a
0
0 58 0
1 5 0
0
0 58 0
1 5 0
2 3
During preferential
kWh rate power
supply activation,
power supply is
interrupted
immediately or after
some time by the
electricity company.
In this case, the
hydro PCB MUST be
powered by a
separate normal
power supply.
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351748-1D – 2016.02
b
0
0 58 0
1 5 0
1