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Mi u, User interface module, Central control board) – American Water Heater HCG3 130T 300 User Manual

Page 65: Figure 62

background image

65

(a)hcg3 130t 400 wiring diagram

1

2

5

6

WHITE

GREEN

BLACK

BLACK

WHITE

RED

COMBUSTION

BLOWER

NOTE: COMBUSTION BLOWER MOTORS

ON 400,000 Btu/hr MODELS ARE

THREE PHASE (3Ø) MOTORS.

BLACK, WHITE AND RED WIRES MUST BE

WIRED AS SHOWN OR THE MOTOR WILL

TURN BACKWARDS. THIS MAY CAUSE THE

CONTROL SYSTEM TO LOCK OUT ON

“BLOWER PROVER OPEN” FAULT.

WHITE/BLACK
WHITE/GREEN
WHITE
WHITE/YELLOW

1

T

2

T

3

T

L

N

AI1

0V

+15V
L l1

2

GREEN

WHITE

RED

BLACK

1

BLACK

3

WHITE

1 RED (ECO)

4 RED (ECO)

2 BLACK
3 BLACK

BLOCKED

INTAKE AIR

BLOCKED

EXHAUST

BLOWER

PROVER

24 VAC

GAS VALVE

B

C

C

6J5

J4
J7

J5

1J

61

J

01

J3

1J2

J3

J1

J

TRANSFORMER

50VA

GROUND STRIP

BURNER GROUND

(BURNER BOLT)

LOW GAS

PRESSURE SWITCH

1 BLACK

RED

2 WHITE

1 BLACK
2 BLACK

MI

U

1

2

15

4

14

5

10

6

7

8

13

11

L

N

ANODE 1

ANODE 2

1 GREEN
2 BLUE

N

OI

T

C

N

UJ

X

O

B

RED

GREEN

GREEN

WHITE

N

E

E

R

G

N

E

E

R

G

N

E

E

R

G

GREEN

UPPER TEMPERATURE PROBE

1 BLACK120 VAC HOT

3 WHITE 120 VAC NEUTRAL
4 YEL 24 VAC
4 YEL 24 VAC

LOWER TEMPERATURE PROBE

HOT SURFACE IGNITER

FLAME SENSOR

(CENTRAL CONTROL BOARD)

INSIDE CCB

ENCLOSURE

GROUND

120 VAC NEUTRAL

120 VAC HOT

USER INTERFACE MODULE

ENABLE/DISABLE CIRCUIT

JUMPER WIRE BETWEEN PINS

8 AND 11 ON J6 PLUG

VFD

VARIABLE

FREQUENCY

DRIVE

ON/OFF

SWITCH

figure 62