About Preferential Kwh Rate Power Supply; Overview Of Electrical Connections Except External Actuators; Overview Of Electrical Connections For External And Internal Actuators - Daikin ERHQ-BW1 Installer's Reference Manual

6 Preparation
WARNING
The backup heater should have a dedicated power supply.

6.3.2 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.

6.3.3 Overview of electrical connections except external actuators

Normal power supply
a
0 0
58 0
1 5 0
3 1
2
a Normal power supply
b Preferential kWh rate power supply
1 Power supply for outdoor unit
2 Power supply and interconnection cable to indoor unit
3 Power supply for backup heater
4 Preferential kWh rate power supply (voltage free contact)
5 Normal kWh rate power supply (to power the indoor unit PCB in the event of power supply interruption of the preferential kWh rate power supply)
6.3.4 Overview of electrical connections for
external and internal actuators
The following illustration shows the required field wiring.
INFORMATION
The following illustration is an example and may NOT
match your system layout.
a
20 6
15 12
21
13
16
14
14
17
18 19
a Indoor unit
Installer reference guide
21
Power supply is NOT interrupted
During preferential kWh rate power supply
activation, power supply is NOT interrupted.
The outdoor unit is turned off by the control.
Remark: The electricity company must always
allow the power consumption of the indoor unit.
M
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 outdoor unit
compressor will not operate.
Whether the power supply is interrupted or not, the wiring to the unit
is different.
Preferential kWh rate power supply
b
0 0
58 0
1 5 0
3 1
4
2
During preferential kWh rate power supply
activation, power supply is interrupted
immediately or after some time by the
electricity company. In this case, the indoor
unit must be powered by a separate normal
power supply.
Power supply is interrupted
a
b
0 0 0 0
58 0 58 0
1 5 0 1 5 0
5 3 4 1
2
Daikin Altherma - Low Temperature Split
4P313777-1 – 2012.05
EHVH/X16