Electrolux Natural Gas Condensing Tankless Water Heater EN18WI30LS Wiring diagram

Electrolux Water Heater Wiring diagram - Natural Gas Condensing Tankless Water Heater EN18WI30LS.
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Y

POWER
CIRCUIT
BOARD

<CN102>

G

<CN78>

<CN186>

MAIN
CIRCUIT
BOARD

R

BL

BL

W

BK

G

BL

O

R

G

BL

<CN101>

<CN42>

R

O

V

W

BL

G

Y

BK

Y

R

<CN38>

<CN197>

BK

BL

BL

W

<CN103>

BK

BK

W

<CN92>

O

<CN104>

W

Y

R

<CN27>

BL

BR

Y

HEAT EXCHANGER

FLOW SENSOR

BL

BL

R

Y

R

Y

(GND)

(Vcc)

(Pulse)

GY

W

R

BL

BL

Minimum Manifold
Pressure Set Button
Maximum Manifold
Pressure Set Button

BL

W

G

R

BK

BL

Quick Connect Cord 2(Optional)

Other Unit in Quick Connect

Multi System

(For Quick Connect Multi System Only)

Decrease Button

Increase Button
Manifold Gas Pressure

Manifold Gas Pressure

BL

BL

<CN186>

BL

G

R

BK

W

BL

G

R

BK

W

MAIN CIRCUIT

BOARD

FLAME ROD

BL

R

R

R(Vcc)

FAN MOTOR

BL(GND)

BR(Vdc)

Y(FG)

BR

BL

Y

BR

BL

Y

G

GROUND

LIGHTNING
PROTECTION

CIRCULATION PUMP
(OPTIONAL)

FREEZE PREVENTION HEATER

W

W

W

HEAT
EXCHANGER
FLOW CONTROL
VALVE

R

R

(VCC)

(Fully open)

(GND)

BL

Y

BL

Y

(VDC)

BK

V

G

O

W

BK

V

G

O

W

BL

BL

BL

BK

W

HIGH-LIMIT

SWITCH

W

W

W

W

THERMAL FUSE

R

BK

RorBL

BKorBL

BL

BK

BK

W

W

BL

R

BK(W)

W(BK)

BK

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

G

GROUND

G

GROUND

<DIP SWITCH>

FLAME DETECTING CIRCUIT

GAS PROPORTION VALVE
POWER CONTROL CIRCUIT

WATER FLOW SENSOR

15V POWER CIRCUIT

HEAT EXCHANGER FLOW CONTROL VALVE

DC15V

GND

DC140V

HOT

HEAT EXCHANGER
THERMISTOR

5V POWER CIRCUIT

AIR INLET
THERMISTOR

FLAME ROD

FR

DU

EARTH

RELAY 2

D

GND

WATER OUTLET
THERMISTOR

WATER INLET
THERMISTOR

FAN
PULSE
CONTROL
CIRCUIT

RELAY
DRIVING
CIRCUIT

RELAY 1

CPU

CENTRAL
PROCESSING
UNIT

D

FAN CURRENT
VALUE INPUT

POWER
CONTROLLER

DC12V

C

SECONDARY

PRIMARY

COMBUTION FAN

FAN

FAN CONTROL
OUTPUT

FAN ROTATION
SPEED INPUT

DC140V

C

Sub-CPU
SUB
CONTROL
UNIT

A

B

EARTH

ARRESTER

NEUTRAL

VARISTOR

RELAY 2

RELAY 1

FREEZE PREVENTION
HEATER

CIRCULATION PUMP

10A(FUSE)

VARISTOR

SOLENOID
VALVE 0

SV0

SV3

SV2

SV1

SOLENOID
VALVE Q2

SOLENOID
VALVE Q3

SOLENOID
VALVE Q1

HIGH LIMIT
SWITCH

IG

IGNITER

E

E

IG DRIVING CIRCUIT

GAS SOLENOID VALVE
 DRIVING CIRCUIT

THERMAL FUSE

W

W

WATER LEVEL
ELECTRODE

W

(GND)

R

W

RorV

W

RorG

BL

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

EXHAUST
THERMISTOR

<CN89>

REMOTE CONTROLLER

BL

BL

W

W

W

W

BK(W)

W(BK)

<AC120V>

BR : Brown

Y   : Yellow

R   : Red

O  : Orange

BK : Black
GY : Gray

G   : Green

BL : Blue

V  : Violet

W  : White

COLOR CODING

WIRING DIAGRAM

B

A

BYPASS  FLOW CONTROL VALVE

SV4

SOLENOID
VALVE Q4

BYPASS
FLOW CONTROL
VALVE

R

R

(VCC)

(Fully open)

(GND)

BL

Y

BL

Y

(VDC)

BK

V

G

O

W

BK

V

G

O

W

Y

G

O

V

BK

O

BL

BLorG

R

W

W

BK

GROUND

W

W

R

HEAT EXCHANGER

THERMISTOR

WATER OUTLET

THERMISTOR
AIR INLET

THERMISTOR
WATER INLET

THERMISTOR
EXHAUST

THERMISTOR

WATER LEVEL ELECTRODE
DETECTION CIRCUIT

BR

<E(N,P)19 Model Only>

<E(N,P)19 Model Only>

<E(N,P)19 Model Only>

RorBL

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

<E(N,P)18 Model Only>

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