Daikin Altherma 3 ECH2O - Page 63

10 Technical data
Installation and maintenance instructions
63
Daikin Altherma EHS(X/H)(B)-D
Heat pump (indoor unit) with integrated heat accumulator
008.1444099_01 – 11/2018 – EN
Item Designation Item Designation
Heat pump outdoor unit K1 Relay 1 for backup heater
Heat pump indoor unit K2 Relay 2 for backup heater
3UVB1 3-way switch valve (internal heat generator circuit) K3 Relay 3 for backup heater
3UVDHW 3-way switch valve (hot water/heating) X1 Terminal strip for backup heater mains connection
A1P Printed circuit board (heat pump basic control) X3 Plug connection for internal wiring to J17 (RoCon BM2C)
X26A Plug connection to TRA1 (230V) FLS Flow sensor
X31A Plug connection to TRA1 (12V) HT/NT Switching contact for low rate mains connection
X3A Plug connection for internal wiring (bridging plug) P Heating circulation pump (connected inside the device)
X4A Plug connection for FLS flow sensor and t
DHW2
P
Z
Circulation pump
X5A Plug connection for t
V
inflow temperature sensor PWM Pump connection (PWM signal)
X6A Plug connection for t
V, BH
inflow temperature sensor RJ45 CAN Plug connection (RoCon BM2C) for internal wiring (for Ro-
Con+ B1)
X7A Plug connection for temperature sensor (refrigerant fluid)
t
DC
RoCon+
B1
Controller control panel
X8A Plug connection for return flow temperature sensor t
R
RoCon
BM2C
Printed circuit board (basic controller module)
X16A Plug connection for heating circulation pump X16A Plug connection for heating circulation pump P
X18A Plug connection to J11 of RoCon BM2C J2 Plug connection for 3UVB1
X19A Plug connection to XAG1 + J10 of RoCon BM2C J3 Plug connection AUX switching contacts and cooling out-
put status output
X21A Plug connection for internal wiring (bridging plug) J5 Pressure sensor plug connection
AUX Switching contact outputs (A-A1-A2) + (B-B1) J6 Plug connection mains voltage
EKBUxx Backup heater J8 Plug connection for EXT
DS Pressure sensor Plug connection for EBA
EBA Switching contact for external requirement request Plug connection for Smart Grid EVU switching contacts
EXT Switching contact for external operating mode changeover Plug connection for outside temperature sensor t
V,BH
F1 Fuse 250V T 2A (RoCon BM2C) Plug connection for storage tank temperature sensor t
DHW1
SG Switching contact for Smart Grid (intelligent mains con-
nection)
Plug connection for HT/NT EVU switching contact
TRA1 Transformer J10 Plug connection for internal wiring to X19A
t
A
Outside temperature sensor J11 Plug connection for internal wiring to X18A (A1P)
t
DHW1
Storage tank temperature sensor 1 (RoCon BM2C) J12 Plug connection for 3UV DHW
t
DHW2
Storage tank temperature sensor 2 (A1P) J13 System bus plug connection (e.g. room station)
t
R
Return flow temperature sensor 2 (A1P) J14 Circulation pump P
Z
plug connection
t
V1
Inflow temperature sensor 1 (A1P) J15 Plug connection for internal wiring (bridging plug)
t
V, BH
Backup heater inflow temperature sensor J16 Room thermostat (EKRTR / EKRTW) plug connection
EHS15706
8
Mixer module HT/NT Switching contact for low rate mains connection
EHS15703
4
Room station XAG1 Heat pump outdoor unit plug connection
cooling
output
Status output for "Cooling" operating mode
(floor heating control connection cooling output)
XBUH1 Backup heater plug connection (EKBUxx)
RT Room thermostat (EKRTW) X2M6 HPc-VK-1 connection cable clamp
RT-E Receiver for wireless room thermostat (EKRTR) X2M7 HPc-VK-1 connection cable clamp
RTX-EHS Printed circuit board (backup heater) X11M Terminal strip in the HP convector
Tab.10-26 Key names for connection and wiring diagrams