ESSENCY EXR - Wiring Diagram

48
WIRING DIAGRAM
This water heater is wired as indicated in the schematic below.
HotWaterPump
HEU
UART2
TFV
M
ATV
θ
SHWTU
θ
DHWT2
θ
SHWT
WaterLevelSensor1
Flowmeter
θ
DCWT
θ
DHWT1
WaterLevelSensor2
UART1
θ
SHWTL
θ
HEUThermostat
-
+
θ
Ba�ery
HEL
θ
HELThermostat
AC/DCConverter
L01
T01
T06
L03
L04
T07
Connectionnamingconvention:
Txx:TerminalBox
Lxx:LowerHeatingElementconnection
Pxx:AC-DCconverterconnection
Uxx:UpperHeatingElementconnection
P02
T04
T03
TouchscreenCard
U03
T05
14VDC 14VDC  GND  GND
U02
TerminalBox
P01
L1 NC L2
L02
T02
U01
EHLT+ EHLT-
14VDC
14VDC
GND
GND
SHWTU  GND EHUT+ EHUT-
GND OD2 GND OD1
 GND
AIN_PWR
 AIN10V
 GND
 CAN_H
 CAN_L
+BATTERY  GND  NTC_BAT
ON/OFF
 GND
OPWM
 GND
 SCT
 GND
TSV_1 TSV_2 HWMPC HWMPS  GND
AxPCGND AxPSGND
GND
SHWTL
GND
DHWT2
GND
DCWT
GND
DHWT1
HMI_Tx HMI_Rx  GND HMI_5V
 GND DCWF_PWR  DCWF  TFV  WLD2  GND  WLD1  GND  SHWT  GND