Wiring Diagram: Indoor Unit - Daikin Altherma 3 R F Installer's Reference Manual

15 | Technical data

15.4 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.
Installer reference guide
190
Notes to go through before starting the unit
English
Notes to go through before starting
the unit
X1M
X2M
X5M
X6M
1
Note 1: Connection point of the power
supply for the BUH/BSH should be
foreseen outside the unit.
Backup heater power supply
1N~, 230 V
User installed options
LAN adapter
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
Safety thermostat
Add LWT
Translation
Notes to go through before starting the
unit
Main terminal
Field wiring terminal for AC
Field wiring terminal for DC
Backup heater power supply terminal
Earth wiring
Field supply
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
Note 1: Connection point of the power
supply for the backup heater/booster
heater should be foreseen outside the
unit.
Backup heater power supply
1N~, 230 V
User installed options
LAN adapter
User interface used as room
thermostat
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
Safety thermostat
Additional leaving water temperature
ERLA03DAV3 + EHFH03S18DJ3V
Daikin Altherma 3 R F
4P596806-1 – 2019.10