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8.2
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
15
**
/12.2
1
User installed options
Domestic hot water tank
Remote user interface
Ext. indoor thermistor
Ext outdoor thermistor
Digital I/O PCB
Demand PCB
Bottom plate heater
Main LWT
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Ext. thermistor
Heat pump convector
Safety thermostat
Add LWT
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Ext. thermistor
Heat pump convector
Position in switch box
English
Position in switch box
Legend
A1P
Main PCB
A2P
User interface PCB
A3P
*
On/OFF thermostat (PC=power circuit)
A3P
*
Heat pump convector
A4P
*
Digital I/O PCB
A4P
*
Receiver PCB (Wireless On/OFF
thermostat)
A5P
Bizone PCB
A6P
Current loop PCB
EHVZ04~16S18CB3V
Daikin Altherma – Low temperature split
4P401672-1E – 2018.02
Translation
Notes to go through before
starting the unit
Main terminal
Field wiring terminal for AC
Field wiring terminal for DC
Earth wiring
Wire number 15
Field supply
Connection ** continues on page
12 column 2
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
User installed options
Domestic hot water tank
Remote user interface
External indoor thermistor
External outdoor thermistor
Digital I/O PCB
Demand PCB
Bottom plate heater
Main leaving water temperature
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
External thermistor
Heat pump convector
Safety thermostat
Additional leaving water
temperature
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
External thermistor
Heat pump convector
Translation
Position in switch box
A7P
Anode driver PCB
A8P
*
Demand PCB
B1L
Flow sensor
DS1 (A5P)
DIP switch
DS1 (A8P)
DIP switch
E1A
Electrical anode
E3H
Backup heater element (3 kW)
F1B
Overcurrent fuse backup heater
F1T
Thermal fuse backup heater
F1U (A4P)
*
Fuse 5 A 250 V for digital I/O PCB
F2U (A4P)
*
Fuse 5 A 250 V for digital I/O PCB
F1U (A5P)
Fuse T 2 A 250 V for PCB
F2U (A5P)
Fuse T 2 A 250 V for PCB
FU1 (A1P)
Fuse T 6.3 A 250 V for PCB
K1M
Contactor backup heater
K2M
Relay 3-way valve bypass
K3M
Relay 3-way valve flow
K*R (A1P, A4P)
Relay on PCB
M1P
Additional zone pump
M2P
#
Domestic hot water pump
M3P
Main zone pump
M1S
Mixing 3-way valve
M2S
#
2-way valve for cooling mode
M3S
3-way valve for space heating/domestic hot
water
PC (A4P)
Power circuit
PHC1 (A4P)
*
Optocoupler input circuit
Q*DI
#
Earth leakage circuit breaker
Q1L
Thermal protector backup heater
Q3L
#
Safety thermostat
R1H (A3P)
*
Humidity sensor
R1T (A1P)
Outlet water heat exchanger thermistor
R1T (A2P)
Ambient sensor user interface
R1T (A3P)
*
Ambient sensor On/OFF thermostat
R2T (A1P)
Outlet backup heater thermistor
R2T (A3P)
*
External sensor (floor or ambient)
R3T
Refrigerant liquid side thermistor
R4T
Inlet water thermistor
R5T
Domestic hot water thermistor
R6T
*
External indoor or outdoor ambient
thermistor
R7T
Mixed leaving water thermistor
S1S
#
Preferential kWh rate power supply contact
S2S
#
Electrical meter pulse input 1
S3S
#
Electrical meter pulse input 2
S4S
#
Safety thermostat
S6S~S9S
#
Digital power limitation inputs
SS1 (A4P)
*
Selector switch
TR1
Power supply transformer
CN1-2, X*A
Connector
X*H, X*Y
8 Technical data
Installation manual
23
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