10 Technical data
Installation manual
34
ETVH/X16S18+23EA6V+9W
Daikin Altherma 3 H HT F
4P644728-1 – 2021.02
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
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
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
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 module WLAN module
WLAN cartridge WLAN cartridge
Bizone mixing kit Bizone mixing kit
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
Legend
A1P Main PCB
A2P * On/OFF thermostat (PC=power circuit)
A3P * Heat pump convector
A4P * Digital I/O PCB
A8P * Demand PCB
A11P MMI (=user interface connected to the
indoor unit) – Main PCB
A14P * User interface PCB
A15P * Receiver PCB (wireless On/OFF thermostat)
A20P * WLAN module
A30P * Bizone mixing kit PCB
CN* (A4P) * Connector
DS1(A8P) * DIP switch
F1B # Overcurrent fuse backup heater
F1U, F2U (A4P) * Fuse 5A 250V for digital I/O PCB
K1A, K2A * High voltage Smart grid relay
K1M, K2M Contactor backup heater
K5M Safety contactor backup heater
K*R (A1P-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
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, J*, X*H*,
X*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
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