Wiring Diagram: Indoor Unit - Daikin Altherma EHVH08SU18CB6W Installer's Reference Manual

14.5

Wiring diagram: Indoor unit

See the internal wiring diagram supplied with the unit (on the inside of the indoor unit switch box cover). The abbreviations used are listed
below.
Notes to go through before starting the unit
English
Notes to go through before
starting the unit
X1M
X2M
X5M
X6M, X7M
15
**
/12.2
1
Internal backup heater
configuration
1N~, 230 V, 6 kW
3~, 230 V, 6 kW
3N~, 400 V, 6 kW
User installed options
Bottom plate heater
Remote user interface
Ext. indoor thermistor
Ext outdoor thermistor
Digital I/O PCB
Demand PCB
Main LWT
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Ext. thermistor
Heat pump convector
Add LWT
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Ext. thermistor
Heat pump convector
Position in switch box
English
Position in switch box
Legend
A1P Main PCB
A2P User interface PCB
A3P * On/OFF thermostat (PC=power circuit)
A3P * Heat pump convector
A4P * Digital I/O PCB
ERLQ004~008CA + EHVH04+08SU18+26CB6W
Daikin Altherma – Low temperature split
4P449978-1B – 2018.07
Translation
Notes to go through before
starting the unit
Main terminal
Field wiring terminal for AC
Field wiring terminal for DC
Backup heater terminal
Earth wiring
Wire number 15
Field supply
Connection ** continues on page
12 column 2
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
Internal backup heater
configuration
1N~, 230 V, 6 kW
3~, 230 V, 6 kW
3N~, 400 V, 6 kW
User installed options
Bottom plate heater
Remote user interface
External indoor thermistor
External outdoor thermistor
Digital I/O PCB
Demand PCB
Main leaving water temperature
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
External thermistor
Heat pump convector
Additional leaving water
temperature
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
External thermistor
Heat pump convector
Translation
Position in switch box
A4P * Receiver PCB (Wireless On/OFF
thermostat)
A5P Anode driver PCB
A8P * Demand PCB
DS1(A8P) * DIP switch
F1B Overcurrent fuse backup heater
F2B Overcurrent fuse booster heater
F1U, F2U * Fuse 5 A 250 V for digital I/O PCB
PHC1 (A4P) * Optocoupler input circuit
K*R Relay on PCB
K1M, K2M Contactor backup heater
K3M Contactor booster heater
K5M Safety contactor backup heater
M2P # Domestic hot water pump
M2S # Shut-off valve
Q*DI # Earth leakage circuit breaker
Q1L Thermal protector backup heater
Q2L Thermal protector booster heater
R1T (A3P) * Ambient sensor On/OFF thermostat
R2T * External sensor (floor or ambient)
R6T * External indoor or outdoor ambient
thermistor
R1H (A3P) * Humidity sensor
S1S # Preferential kWh rate power supply contact
S2S # Electrical meter pulse input 1
S3S # Electrical meter pulse input 2
S4S # Safety thermostat
S6S~S9S # Digital power limitation inputs
SS1 (A4P) * Selector switch
TR1 Power supply transformer
X*M Terminal strip
X*Y Connector
* = Optional
# = Field supply
Colours
BLK Black
BRN Brown
GRY Grey
RED Red
Translation of text on wiring diagram
English
(1) Main power connection
For preferential kWh rate power
supply
Indoor unit supplied from outdoor Indoor unit supplied from outdoor
Normal kWh rate power supply
Only for normal power supply
(standard)
Only for preferential kWh rate
power supply (outdoor)
14 Technical data
Translation
(1) Main power connection
For preferential kWh rate power
supply
Normal kWh rate power supply
Only for normal power supply
(standard)
Only for preferential kWh rate
power supply (outdoor)
Installer reference guide
91