10 Technical data
Installation manual
33
ETVH/23E
Daikin Altherma 3 H MT F
4P634880-1C – 2022.08
c1
Water IN from outdoor unit (screw connection, 1")
c2
Water OUT to outdoor unit (screw connection, 1")
d
Pump
e
Backup heater
f
Shut-off valve, male-female 1"
g
Expansion vessel
h
Magnetic filter/dirt separator
i
Safety valve
j
Air purge
k
Drain valve
l
Loose nut 1"
m
Shut-off valve (recommended)
n
Non-return valve (recommended)
o
Pressure reducing valve (recommended)
*p
Pressure relief valve (max. 10 bar (=1.0 MPa))(mandatory)
*q
Tundish (mandatory)
r
Expansion vessel (recommended)
B1PW
Space heating water pressure sensor
B2L
Flow sensor
M3S
3-way valve (space heating/domestic hot water)
R1T
Thermistor (water IN)
R2T
Thermistor (backup heater – water OUT)
R5T, R8T
Thermistor (tank)
S1L
Flow switch
Screw connection
Flare connection
Quick coupling
Brazed connection
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
1
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
should be foreseen outside the
unit.
Note 1: Connection point of the
power supply for the backup
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
Dedicated Human Comfort
Interface (BRC1HHDA used as
room thermostat)
Ext. indoor thermistor
External indoor thermistor
Ext outdoor thermistor
External outdoor thermistor
Digital I/O PCB
Digital I/O PCB
English
Translation
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
Main PCB of the MMI (= user interface of the
indoor unit)
A14P
* PCB of the dedicated Human Comfort
Interface (BRC1HHDA used as room
thermostat)
