Overview Of Electrical Connections Except External Actuators - Daikin EWYA004D2V3P Installer's Reference Manual

9.1.5 Overview of electrical connections except external actuators

EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B – 2022.09
The hydro module of the outdoor 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.
The wiring to the unit is different depending on whether the power supply is
interrupted or NOT.
This topic describes the following power supply layouts:
▪ Normal kWh rate power supply
▪ Preferential kWh rate power supply WITHOUT separate normal kWh rate power
supply
▪ Preferential kWh rate power supply WITH separate normal kWh rate power
supply
Normal kWh rate power supply
0
0 58 0
1 5 0
a
b b
c d e
A B
A Outdoor unit
B External backup heater kit
a Electrical cabinet: Normal kWh rate power supply
b Overcurrent fuse
c Compressor module
d Hydro module
e Backup heater
Preferential kWh rate power supply WITHOUT separate normal kWh rate power
supply
During preferential kWh rate power supply activation, power supply is NOT
interrupted. The compressor module of the outdoor unit is turned off by the
control.
Remark: The electricity company must always allow the power consumption of the
hydro module of the outdoor unit.
0
0 58 0
1 5 0
S1S
b
X5M/9+10
c d
A
A Outdoor unit
B External backup heater kit
a Electrical cabinet: Preferential kWh rate power supply
b Overcurrent fuse
c Compressor module
d Hydro module
e Backup heater
a
b
e
B
9 Electrical installation
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Installer reference guide
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