Consumed Energy; Normal Kwh Rate Power Supply; Preferential Kwh Rate Power Supply - Daikin Altherma EHVH08SU18CB6W Installer's Reference Manual

5 Application guidelines
▪ Setup and configuration:
▪ No additional equipment needed.
▪ Measure the capacity (resistance measurement) of the booster
heater and set the capacity via the user interface. Example: If
you measure a booster heater resistance of 24Ω, the capacity
of the heater at 230 V is 2200 W.
5.5.2

Consumed energy

You can use the following methods to determine the consumed
energy:
▪ Calculating
▪ Measuring
INFORMATION
You cannot combine calculating the consumed energy
(example: for backup
consumed energy (example: for outdoor unit). If you do so,
the energy data will be invalid.
Calculating the consumed energy
▪ Only applicable for EHVH04+08.
▪ The consumed energy is calculated internally based on:
▪ The actual power input of the outdoor unit
▪ The set capacity of the backup heater and booster 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 backup heater (step 1 and step 2)
▪ The booster heater
Measuring the consumed energy
▪ Applicable for all models.
▪ 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. Consumed energy data for EHVH11+16 models will only
be available if this setting is configured.
INFORMATION
When measuring the electrical power consumption, make
sure ALL power input of the system is covered by the
electrical power meters.
5.5.3

Normal kWh rate power supply

General rule
One power meter that covers the entire system is sufficient.
Setup
Connect the power meter to X5M/7 and X5M/8.
Power meter type
In case of...
▪ Single-phase outdoor unit
▪ Backup heater supplied from a
single-phase grid
In other cases (i.e. a three-phase
outdoor unit and/or a backup
heater connected to a three-
phase grid)
Installer reference guide
20
heater) and measuring the
Use a... power meter
Single-phase
Three-phase
Example
Single-phase power meter
0
0
58 0
1 5 0
a
b
c c
d e f g
A B C
A Outdoor unit
B Indoor unit
C DHW tank
a Electrical cabinet (L /N)
1
b Power meter (L /N)
1
c Fuse (L /N)
1
d Outdoor unit (L /N)
1
e Indoor unit (L /N)
1
f Backup heater (L /N)
1
g Booster heater (L /N)
1
Exception
▪ You can use a second power meter if:
▪ The power range of one meter is insufficient.
▪ The electrical meter cannot easily be installed in the electrical
cabinet.
▪ 230 V and 400 V three-phase grids are combined (very
uncommon), because of technical limitations of power meters.
▪ Connection and setup:
▪ Connect the second power meter to X5M/9 and X5M/10.
▪ In the software the power consumption data of both meters is
added so you do NOT have to set which meter covers which
power consumption. You only need to set the number of pulses
of each power meter.
▪ See "5.5.4 Preferential kWh rate power supply" on page 20
an example with two power meters.
5.5.4

Preferential kWh rate power supply

General rule
▪ Power meter 1: Measures the outdoor unit.
▪ Power meter 2: Measures the rest (i.e. indoor unit, backup heater,
and booster heater).
Setup
▪ Connect power meter 1 to X5M/7 and X5M/8.
▪ Connect power meter 2 to X5M/9 and X5M/10.
Power meter types
▪ Power meter 1: Single- or three-phase power meter according to
the power supply of the outdoor unit.
ERLQ004~008CA + EHVH04+08SU18+26CB6W
Three-phase power meter
0
0
58 0
1 5 0
a
b
  
 
c c d
e f g h
A B C
A Outdoor unit
B Indoor unit
C DHW tank
a Electrical cabinet (L /L /L /N)
1 2 3
b Power meter (L /L /L /N)
1 2 3
c Fuse (L /L /L /N)
1 2 3
d Fuse (L /N)
1
e Outdoor unit (L /L /L /N)
1 2 3
f Indoor unit (L /L /L /N)
1 2 3
g Backup heater (L /L /L /N)
1 2 3
h Booster heater (L /N)
1
Daikin Altherma – Low temperature split
4P449978-1B – 2018.07
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