Consumed Energy; Power Supply Layouts With Power Meters - Daikin EWYA004D2V3P Installer's Reference Manual

6 | Application guidelines

6.4.2 Consumed energy

6.4.3 Power supply layouts with power meters

Installer reference guide
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▪ The produced heat is calculated internally based on:
- The leaving and entering water temperature
- The flow rate
▪ Setup and configuration: No additional equipment needed.
You can use the following methods to determine the consumed energy:
▪ Calculating
▪ Measuring
INFORMATION
You cannot combine calculating the consumed energy (example: for backup heater
(if applicable)) and measuring the consumed energy (example: for outdoor unit). If
you do so, the energy data will be invalid.
Calculating the consumed energy
▪ The consumed energy is calculated internally based on:
- The actual power input of the outdoor unit
- The set capacity of the optional backup heater
- The voltage
▪ Setup and configuration: To get accurate energy data, measure the capacity
(resistance measurement) and set the capacity via the user interface for the
optional backup heater (step 1 and step 2).
Measuring the consumed energy
▪ Preferred method because of higher accuracy.
▪ Requires external power meters.
▪ Setup and configuration: When using electrical power meters, set the number of
pulses/kWh for each power meter via the user interface.
INFORMATION
When measuring the electrical power consumption, make sure ALL power input of
the system is covered by the electrical power meters.
1 power meter. You only need 1 power meter that measures the entire system
(compressor module, hydro module and backup heater) in the following cases:
▪ Normal kWh rate power supply
▪ Preferential kWh rate power supply WITHOUT separate normal kWh rate power
supply
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B – 2022.09