Daikin Altherma 3 R F EHVZ04S18E 6V Series - Page 233

16 | Technical data
Installer reference guide
233
ERGA04~08EAV3(A) + EHVZ04+08S18+23EA6V+9W
Daikin Altherma 3 R F
4P629093-1 – 2020.08
E*P (A9P) Indication LED
F1B # Overcurrent fuse backup heater
F1T Thermal fuse backup heater
F1U, F2U (A4P) * Fuse 5A 250V for digital I/O PCB
F1U, F2U (A5P) * Fuse 3.15A 250V for PCB
FU1 (A1P) Fuse T 5A 250V for PCB
K1A, K2A * High voltage Smart grid relay
K1M, K2M Contactor backup heater
K5M Safety contactor backup heater
K6M Relay 3-way valve bypass
K7M Relay 3-way valve flow
K*R (A1P-A4P) Relay on PCB
M1P Additional zone pump
M1S Mixing 3-way valve
M2P # Domestic hot water pump
M2S # 2-way valve for cooling mode
M3P Main zone pump
M3S 3-way valve for space heating/domestic hot water
P1M MMI display
PC (A15P) * Power circuit
PHC1 (A4P) * Optocoupler input circuit
Q1L Thermal protector backup heater
Q3L, Q4L # Safety thermostat
Q*DI # Earth leakage circuit breaker
R1H (A2P) * Humidity sensor
R1T (A1P ) Outlet water heat exchanger thermistor
R1T (A2P) * Ambient sensor On/OFF thermostat
R1T (A14P) * Ambient sensor user interface
R2T (A1P) Outlet backup heater thermistor
R2T (A2P) * External sensor (floor or ambient)
R3T Refrigerant liquid side thermistor
R4T Inlet water thermistor
R5T, R8T 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