Daikin Altherma 3 R ECH2O - Page 37

6 Technical data
Installation and operating manual
37
Daikin Altherma EHS(X/H)(B)-D
Daikin Altherma 3 R ECH₂O
008.1451099_00 – 07/2020
 6‒6 Key names for connection and wiring diagrams
Item Name Item Name
Heat pump outdoor unit J2 Plug connection 3UVB1
Heat pump indoor unit J3 Plug connection AUX switching contacts and cooling
output status output
3UVB1 3‑way changeover valve (internal heat generator
circuit)
J5 Pressure sensor plug connection
3UV DHW 3‑way changeover valve (hot water/heating) J6 Plug connection mains voltage
a Switch box J8 Plug connection for EXT
A1P Printed PCB (heat pump basic control) Plug connection for EBA
AUX Switching contact outputs (A-A1-A2) + (B-B1) Plug connection for Smart Grid EVU switching contacts
b Switch box cover Backup heater infeed temperature sensor plug
connection t
V,BH
cooling output Status output for "Cooling" operating mode
(floor heating control connection cooling output)
Plug connection for storage tank temperature sensor
t
DHW1
DS Pressure sensor Plug connection for HT/NT EVU switching contact
EBA Switching contact for external requirement request J10 Plug connection for internal wiring to X1A
EHS157034 Room station J11 Plug connection for internal wiring to X18A (A1P)
EHS157068 Mixer module J12 Plug connection 3UV DHW
EKBUxx Backup heater J13 System bus plug connection (e.g. room station)
EXT Switching contact for external operating mode
changeover
J14 Circulation pump P
Z
plug connection
F1 Fuse 250V T 2A (RoCon BM2C) J15 Mains switch plug connection
FLS FlowSensor J16 Room thermostat (EKRTR/EKRTW) plug connection
HT/NT Switching contact for low rate mains connection K1 Relay 1 for backup heater
P Heating circulation pump (connected inside the device) K2 Relay 2 for backup heater
P
Z
Circulation pump K3 Relay 3 for backup heater
PWM Pump connection (PWM signal) X1 Terminal strip for backup heater mains connection
RJ45 CAN Internal wiring plug connection (RoCon BM2C) (to
RoCon+ B1)
X3 Internal wiring plug connection to J17 (RoCon BM2C)
RoCon BM2C Printed PCB (basic controller module) X1A Plug connection to J10 from RoCon BM2C
RoCon+ B1 Controller control panel X3A Plug connection for internal wiring (bridging plug)
RT Room thermostat (EKRTW) X4A Plug connection for FLS flow sensor and t
DHW2
RT-E Receiver for wireless room thermostat (EKRTR) X5A Plug connection for t
V
flow temperature sensor
RTX-EHS Printed PCB (backup heater) X7A Plug connection for temperature sensor (refrigerant
fluid) t
DC
SG Switching contact for Smart Grid (intelligent mains
connection)
X8A Plug connection for return temperature sensor t
R
T
A
Outdoor temperature sensor X16A Plug connection for heating circulation pump
TRA1 Transformer X18A Plug connection to J11 from RoCon BM2C
t
DHW1
Storage tank temperature sensor 1 (RoCon BM2C) X19A Plug connection to XAG1
t
DHW2
Storage tank temperature sensor 2 (A1P) X21A Plug connection for internal wiring (bridging plug)
t
R
Return temperature sensor (A1P) X22A Plug connection for XTA1
t
V
Flow temperature sensor (A1P) X26A Plug connection to TRA1 (230V)
t
V,BH
Backup heater flow temperature sensor X31A Plug connection to TRA1 (12V)
X2M6 HPc-VK-1 connection cable clamp
X2M7 HPc-VK-1 connection cable clamp
X11M Terminal strip in FWXV-ATV3
XAG1 Heat pump outdoor unit plug connection
XBUH1 Backup heater plug connection (EKBUxx)
XAG1 Heat pump outdoor unit plug connection
XTA1 Outdoor temperature sensor terminal strip T
A