Daikin Altherma 3 R ECH2O - Wiring Diagram: Indoor Unit

10 Technical data
Installation manual
48
EBSH/X(B)11+16P30+50DF
Daikin Altherma 3 R ECH₂O
4P663483-1A – 2021.11
10.2 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
X12M Field wiring terminal for AC
X15M Field wiring terminal for DC
X6M Backup heater power supply
terminal
Earth wiring
Field supply
1
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
Backup heater power supply Backup heater power supply
3V (1N~, 230 V, 3 kW) 3V (1N~, 230V, 3kW)
6V (1N~, 230 V, 6 kW) 6V (1N~, 230V, 6kW)
6WN/9WN (3N~, 400 V, 6/9
kW)
6WN/9WN (3N~, 400V,
6/9kW)
User installed options User installed options
Backup heater Backup heater
Remote user interface Dedicated Human Comfort
Interface (BRC1HHDA used as
room thermostat)
Ext. indoor thermistor External indoor thermistor
Ext outdoor thermistor External outdoor thermistor
Demand PCB Demand PCB
Smartgrid kit Smart grid kit
WLAN adapter module WLAN adapter module
WLAN cartridge WLAN cartridge
Bizone mixing kit Bizone mixing kit
Safety thermostat Safety thermostat
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
SWB1 Main switch box
SWB2 Backup heater switch box
Legend
A1P Main PCB
A2P * On/OFF thermostat (PC=power circuit)
A3P * Heat pump convector
A8P * Demand PCB
A11P MMI (=user interface of the indoor unit) –
Main PCB
A14P * PCB of the dedicated Human Comfort
Interface (BRC1HHDA used as room
thermostat)
A15P * Receiver PCB (wireless On/OFF thermostat)
A20P * WLAN module
A23P Hydro extension PCB
A30P Bizone mixing kit PCB
DS1(A8P) * DIP switch
F1B # Overcurrent fuse backup heater
F2B # Overcurrent fuse main
FU1 (A1P) Fuse (T 5 A 250 V for PCB)
FU1 (A23P) Fuse (3.15 A 250 V for PCB)
K1A, K2A * High voltage smartgrid relay
K1M, K2M Contactor backup heater
K5M Safety contactor backup heater
M2P # Domestic hot water pump
M4S # 2-way valve for cooling mode
PC (A15P) * Power circuit
Q1L Thermal protector backup 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
S4S # Smart grid feed-in
S6S~S9S * Digital power limitation inputs
S10S~S11S # Low voltage Smart grid contact
S12S Gas meter input
S13S Solar input
TR1 Power supply transformer
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
Outdoor unit Outdoor unit
SWB1 Switch box
(2) User interface (2) User interface