Daikin Altherma 3 H W - 8.2 Wiring diagram: Indoor unit

8 Technical data
Installation manual
26
EABH/X16DF6V+9W
Daikin Altherma 3 H W
4P644479-1 – 2020.12
8.2 Wiring diagram: Indoor unit
See the internal wiring diagram supplied with the unit (on the inside of the indoor unit upper front panel). 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 Backup heater power supply
terminal
X7M/X8M Booster heater power supply
terminal
Earth wiring
Field supply
1
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
Note 1: Connection point of the
power supply for the BUH/BSH
should be foreseen outside the
unit.
Note 1: Connection point of the
power supply for the backup
heater should be foreseen outside
the unit.
Backup heater power supply Backup heater power supply
3V3 (1N~, 230 V, 3 kW) 3V3 (3~, 230V, 6kW)
6T1 (3~, 230 V, 6 kW) 6T1 (3~, 230V, 6kW)
6V3 (1N~, 230 V, 6 kW) 6V3 (1N~, 230V, 6kW)
6WN (3N~, 400 V, 6
kW)/9WN (3N~, 400 V, 9 kW)
6WN/9WN (3N~, 400V, 6kW)
User installed options User installed options
LAN adapter LAN adapter
Domestic hot water tank Domestic hot water tank
Remote user interface User interface used as room
thermostat
Ext. indoor thermistor External indoor thermistor
Ext outdoor thermistor External outdoor thermistor
Digital I/O PCB Digital I/O PCB
Demand PCB Demand PCB
Bottom plate heater Bottom plate heater
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
Safety thermostat Safety thermostat
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 * On/OFF thermostat (PC=power circuit)
A3P * Heat pump convector
A4P * Digital I/O PCB
A8P * Demand PCB
A10P MMI (=user interface connected to the
indoor unit) – Power supply unit PCB
A11P MMI (=user interface connected to the
indoor unit) – Main PCB
A13P * LAN adapter
A14P * User interface PCB
A15P * Receiver PCB (wireless On/OFF thermostat)
BSK (A3P) * Solar pump station relay
CN* (A4P) * Connector
DS1(A8P) * DIP switch
F1B # Overcurrent fuse backup heater
F2B # Overcurrent fuse booster heater
F1U, F2U (A4P) * Fuse 5A 250V for digital I/O PCB
K1M, K2M Contactor backup heater
K3M Contactor booster heater
K5M Safety contactor backup heater
K*R (A4P) Relay on PCB
M2P # Domestic hot water pump
M2S # 2-way valve for cooling mode
M3S # 3-way valve for floorheating/domestic hot
water
PC (A15P) * Power circuit
PHC1 (A4P) * Optocoupler input circuit
Q2L Thermal protector booster heater
Q4L # Safety thermostat
Q*DI # Earth leakage circuit breaker
R1H (A2P) * Humidity sensor
R1T (A2P) * Ambient sensor On/OFF thermostat
R2T (A2P) * External sensor (floor or ambient)
R6T * External indoor or outdoor ambient
thermistor
S1S # Preferential kWh rate power supply contact
S2S # Electricity meter pulse input 1
S3S # Electricity meter pulse input 2
S6S~S9S * Digital power limitation inputs
SS1 (A4P) * Selector switch
TR1 Power supply transformer
X6M # Backup heater power supply terminal strip
X7M/X8M # Booster heater power supply terminal strip
X*, X*A, X*Y, Y* Connector
X*M Terminal strip
* Optional
# Field supply
Translation of text on wiring diagram
English Translation
(1) Main power connection (1) Main power connection