Daikin Altherma 3 HT - Page 268

16 | Technical data
Installer reference guide
268
EPRA14~18D + ETVH/X16S18+23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03
English Translation
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)
A15P * Receiver PCB (wireless ON/OFF thermostat)
A20P * WLAN module
A30P * Bizone mixing kit PCB
CN* (A4P) * Connector
DS1 (A8P) * DIP switch
F1B # Overcurrent fuse backup 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
K5M Safety contactor backup heater
K*R (A1P-A4P) Relay on PCB
M2P # Domestic hot water pump
M2S # 2-way valve for cooling mode
PC (A15P) * Power circuit
PHC1 (A4P) * Optocoupler input circuit