Wiring Diagram: Indoor Unit - Daikin ETBH16EF6V Installation Manual

10 Technical data
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
Notes to go through before
starting the unit
X1M
X2M
X5M
X6M
X7M, X8M
X10M
1
Note 1: Connection point of the
power supply for the BUH/BSH
should be foreseen outside the
unit.
Backup heater power supply
6T1 (3~, 230 V, 6 kW)
6V3 (1N~, 230 V, 6 kW)
6WN/9WN (3N~, 400 V, 6/9
kW)
User installed options
Remote user interface
Ext. indoor thermistor
Ext outdoor thermistor
Digital I/O PCB
Demand PCB
Safety thermostat
Smart Grid
WLAN module
WLAN cartridge
Bizone mixing kit
Domestic hot water tank
Main LWT
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Ext. thermistor
Heat pump convector
Add LWT
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Ext. thermistor
Heat pump convector
Installation manual
34
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
Booster heater power supply
terminal
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 backup
heater/booster heater should be
foreseen outside the unit.
Backup heater power supply
6T1 (3~, 230 V, 6 kW)
6V3 (1N~, 230 V, 6 kW)
6WN/9WN (3N~, 400 V, 6/9
kW)
User installed options
User interface used as room
thermostat
External indoor thermistor
External outdoor thermistor
Digital I/O PCB
Demand PCB
Safety thermostat
Smart grid
WLAN module
WLAN cartridge
Bizone mixing kit
Domestic hot water tank
Main leaving water temperature
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
External thermistor
Heat pump convector
Additional leaving water
temperature
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
External thermistor
Heat pump convector
Position in switch box
English
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
B1PW Water pressure sensor
BSK (A3P) Solar pump station relay
CN* (A4P) * Connector
DS1(A8P) * DIP switch
F1B # Overcurrent fuse backup heater
F2B # Overcurrent fuse booster 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
K3M * Contactor booster 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
M3S * 3-way valve for floorheating/domestic hot
water
PC (A15P) * Power circuit
PHC1 (A4P) * Optocoupler input circuit
Q1L Thermal protector backup heater
Q2L * Thermal protector booster 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)
R5T Domestic hot water thermistor
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
Translation
Position in switch box
ETBH/X16EF6V+9W
Daikin Altherma 3 H HT W
4P644727-1 – 2021.02