Wiring Diagram: Indoor Unit - Daikin EPRA18DAW1 Installer's Reference Manual

15 | Technical data

15.5 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.
Installer reference guide
232
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 should be foreseen
outside the unit.
Backup heater power supply
6T1 (3~, 230 V, 6 kW)
6V (1N~, 230 V, 6 kW)
6WN/9WN (3N~, 400 V, 6/9 kW)
User installed options
LAN adapter
WLAN adapter
Remote user interface
Ext. indoor thermistor
Ext outdoor thermistor
Digital I/O PCB
Demand PCB
Safety thermostat
Main LWT
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Ext. thermistor
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 should be
foreseen outside the unit.
Backup heater power supply
6T1 (3~, 230 V, 6 kW)
6V (1N~, 230 V, 6 kW)
6WN/9WN (3N~, 400 V, 6/9 kW)
User installed options
LAN adapter
WLAN adapter
Dedicated Human Comfort Interface
(BRC1HHDA used as room thermostat)
External indoor thermistor
External outdoor thermistor
Digital I/O PCB
Demand PCB
Safety thermostat
Main leaving water temperature
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
External thermistor
EPRA14~18DAV3+W1 + ETVZ16S18+23DA6V+9W
Daikin Altherma 3 H HT F
4P587503-1A – 2020.01