Daikin EHVH04SU18CB6W [91/108] Wiring diagram indoor unit

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Daikin EHVH04SU18CB6W [91/108] Wiring diagram indoor unit
14 Technical data
Installer reference guide
91
ERLQ004~008CA + EHVH04+08SU18+26CB6W
Daikin Altherma – Low temperature split
4P449978-1 – 2016.06
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 Translation
Notes to go through before
starting the unit
Notes to go through before
starting the unit
X1M Main terminal
X2M Field wiring terminal for AC
X5M Field wiring terminal for DC
X6M, X7M Backup heater terminal
Earth wiring
15
Wire number 15
Field supply
**
/12.2
Connection ** continues on page
12 column 2
1
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
Internal backup heater
configuration
Internal backup heater
configuration
1N~, 230 V, 6 kW 1N~, 230V, 6kW
3~, 230 V, 6 kW 3~, 230V, 6kW
3N~, 400 V, 6 kW 3N~, 400V, 6kW
User installed options User installed options
Bottom plate heater Bottom plate heater
Remote user interface Remote user interface
Ext. indoor thermistor External indoor thermistor
Ext outdoor thermistor External outdoor thermistor
Digital I/O PCB Digital I/O PCB
Demand PCB Demand PCB
Main LWT Main leaving water temperature
On/OFF thermostat (wired) On/OFF thermostat (wired)
On/OFF thermostat (wireless) On/OFF thermostat (wireless)
Ext. thermistor External thermistor
Heat pump convector Heat pump convector
Add LWT Additional leaving water
temperature
On/OFF thermostat (wired) On/OFF thermostat (wired)
On/OFF thermostat (wireless) On/OFF thermostat (wireless)
Ext. thermistor External thermistor
Heat pump convector Heat pump convector
Position in switch box
English Translation
Position in switch box 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
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 Translation
(1) Main power connection (1) Main power connection
For preferential kWh rate power
supply
For preferential kWh rate power
supply
Indoor unit supplied from outdoor Indoor unit supplied from outdoor
Normal kWh rate power supply Normal kWh rate power supply
Only for normal power supply
(standard)
Only for normal power supply
(standard)
Only for preferential kWh rate
power supply (outdoor)
Only for preferential kWh rate
power supply (outdoor)

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