Daikin ERLQ004CA Installer's Reference Manual page 89

English
Remote user interface
Ext. indoor thermistor
Ext outdoor thermistor
Digital I/O PCB
Demand PCB
Solar pump and control station
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
Position in switch box
English
Position in switch box
Legend
A1P Main PCB
A2P User interface PCB
A3P * Solar pump station 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 Anode driver PCB
A8P * Demand PCB
B1L Flow sensor
BSK (A3P) * Solar pump station relay
DS1 (A8P) * DIP switch
E1A Electrical anode
E1H Backup heater element (1 kW)
E2H Backup heater element (2 kW)
E3H Backup heater element (3 kW)
E4H * Booster heater (3 kW)
F1B Overcurrent fuse backup heater
F2B * Overcurrent fuse booster heater
F1T Thermal fuse backup heater
F1U, F2U (A4P) * Fuse 5 A 250 V for digital I/O PCB
FU1 (A1P) Fuse T 6.3 A 250 V for PCB
K1M, K2M Contactor backup heater
K3M * Contactor booster heater
K5M Safety contactor backup heater (only for
*9W)
K*R (A1P, A4P) Relay on PCB
M1P Main supply pump
M2P # Domestic hot water pump
M2S # 2-way valve for cooling mode
ERLQ004~008CA + EHBH/X04+08CB
Daikin Altherma – Low temperature split
4P384972-1B – 2017.04
Translation
Remote user interface
External indoor thermistor
External outdoor thermistor
Digital I/O PCB
Demand PCB
Solar pump and control station
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
Translation
Position in switch box
M3S (*) 3-way valve for floor heating/domestic hot
water
PC (A4P) Power circuit
PHC1 (A4P) * Optocoupler input circuit
Q*DI # Earth leakage circuit breaker
Q1L Thermal protector backup heater
Q2L * Thermal protector booster heater
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
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
X1H, X*Y
X*M Terminal strip
*: Optional
(*): Standard for EHVH/X, optional for EHBH/X
#: Field supply
Colours
BLK Black
BRN Brown
GRY Grey
RED Red
Translation of text on wiring diagram
English
(1) Main power connection
For preferential kWh rate power
supply
Indoor unit supplied from outdoor Indoor unit supplied from outdoor
Normal kWh rate power supply
Only for normal power supply
(standard)
Only for preferential kWh rate
power supply (outdoor)
Outdoor unit
Preferential kWh rate power
supply contact: 16 V DC
detection (voltage supplied by
PCB)
Use normal kWh rate power
supply for indoor unit
(2) Backup heater power supply
Only for ***
14 Technical data
Translation
(1) Main power connection
For preferential kWh rate power
supply
Normal kWh rate power supply
Only for normal power supply
(standard)
Only for preferential kWh rate
power supply (outdoor)
Outdoor unit
Preferential kWh rate power
supply contact: 16 V DC
detection (voltage supplied by
PCB)
Use normal kWh rate power
supply for indoor unit
(2) Backup heater power supply
Only for ***
Installer reference guide
89