16 | Technical data
Installer reference guide
254
ERGA04~08EAV3(A) + EHVH04+08SU18+23EA6V
Daikin Altherma 3 R F
4P629090-1 – 2020.08
16.4 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.
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
X10M Smart grid 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 BUH/BSH should be
foreseen outside the unit.
Note 1: Connection point of the power
supply for the backup heater/booster
heater should be foreseen outside the
unit.
Backup heater power supply Backup heater power supply
3V (1N~, 230 V, 3 kW) 3V (1N~, 230 V, 3 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/9WN (3N~, 400 V, 6/9 kW) 6WN/9WN (3N~, 400 V, 6/9 kW)
User installed options User installed options
LAN adapter LAN adapter
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
Safety thermostat Safety thermostat
Smart Grid Smart grid
WLAN adapter module WLAN adapter module
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