10 Technical data
Installation manual
42
EL23E
Daikin Altherma 3 R MT F
4P708476-1 – 2023.03
A14P
* PCB of the dedicated Human Comfort
Interface (BRC1HHDA used as room
thermostat)
A15P
* Receiver PCB (wireless ON/OFF
thermostat)
A20P
* WLAN module
CN* (A4P)
* Connector
DS1(A8P)
* DIP switch
F1B
# Overcurrent fuse backup heater
F1U, F2U (A4P)
* Fuse 5 A 250 V for digital I/O PCB
K1A, K2A
* High voltage Smart Grid relay
K1M, K2M
Contactor backup heater
K5M
Safety contactor backup heater
K6M
Relay 3-way valve bypass
K7M
Relay 3-way valve flow
K*R (A4P)
Relay on PCB
M2P
# Domestic hot water pump
M2S
# 2-way valve for cooling mode
PC (A15P)
* Power circuit
PHC1 (A4P)
* Optocoupler input circuit
Q1L
Thermal protector backup heater
Q3L, 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
# Electrical meter pulse input 1
S3S
# Electrical meter pulse input 2
S4S
# Smart Grid feed-in
S6S~S9S
* Digital power limitation inputs
S10S-S11S
# Low voltage Smart Grid contact
SS1 (A4P)
* Selector switch
TR1
Power supply transformer
X6M
# Backup heater power supply terminal strip
X10M
* Smart Grid 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
For HP tariff
For heat pump tariff
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)
Outdoor unit
Outdoor unit
Preferential kWh rate power
supply contact: 16 V DC
detection (voltage supplied by
PCB)
Preferential kWh rate power
supply contact: 16 V DC
detection (voltage supplied by
PCB)
English
Translation
SWB
Switch box
Use normal kWh rate power
supply for indoor unit
Use normal kWh rate power
supply for indoor unit
(2) Backup heater power supply
(2) Backup heater power supply
Only for ***
Only for ***
(3) User interface
(3) User interface
Only for remote user interface
Only for the dedicated Human
Comfort Interface (BRC1HHDA
used as room thermostat)
SD card
Card slot for WLAN cartridge
SWB
Switch box
WLAN cartridge
WLAN cartridge
(5) Ext. thermistor
(5) External thermistor
SWB
Switch box
(6) Field supplied options
(6) Field supplied options
12 V DC pulse detection (voltage
supplied by PCB)
12 V DC pulse detection (voltage
supplied by PCB)
230 V AC Control Device
230 V AC Control Device
230 V AC supplied by PCB
230 V AC supplied by PCB
Continuous
Continuous current
DHW pump output
Domestic hot water pump output
DHW pump
Domestic hot water pump
Electrical meters
Electrical meters
For HV smartgrid
For high voltage Smart Grid
For LV smartgrid
For low voltage Smart Grid
For safety thermostat
For safety thermostat
For smartgrid
For Smart Grid
Inrush
Inrush current
Max. load
Maximum load
Normally closed
Normally closed
Normally open
Normally open
Safety thermostat
Safety thermostat
Safety thermostat contact: 16 V
DC detection (voltage supplied
by PCB)
Safety thermostat contact:
16 V DC detection (voltage
supplied by PCB)
Shut-off valve
Shut-off valve
Smartgrid contacts
Smart Grid contacts
Smartgrid PV power pulse meter Smart Grid photovoltaic power
pulse meter
SWB
Switch box
(7) Option PCBs
(7) Option PCBs
Alarm output
Alarm output
Changeover to ext. heat source
Changeover to external heat
source
Max. load
Maximum load
Min. load
Minimum load
Only for demand PCB option
Only for demand PCB option
Only for digital I/O PCB option
Only for digital I/O PCB option
Options: ext. heat source output,
alarm output
Options: external heat source
output, alarm output
Options: On/OFF output
Options: ON/OFF output
Power limitation digital inputs: 12
V DC / 12 mA detection (voltage
supplied by PCB)
Power limitation digital inputs:
12 V DC / 12 mA detection
(voltage supplied by PCB)
Space C/H On/OFF output
Space cooling/heating ON/OFF
output
SWB
Switch box
