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Page 7 – Bunn DUAL User Manual

Page 7

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Page 7

R
T

S
E
L
E
C
T
O
R

S

W

VIO

PROBE

PIN-20

1

4

3

2

LIQUID
LEVEL

BOARD

BLU

K1

RED

SOL

RED

RED

SW. & THERMOSTAT

READY INDICATORS

OPTIONAL

RECOVERY BOOSTER

BLK

BLU

K2 N.O.

K3 N.O.

RED

SCHEMATIC WIRING DIAGRAM DUAL-A & -B BREWER

(W/TWO-GRINDER INTERFACE)

GRN/YEL

RED-12

K1

N.O.

BLU

TANK HEATERS (TWO)

3300W EACH

1/4 BATCH
1/3 BATCH
1/2 BATCH
2/3 BATCH

3/4 BATCH
BATCH COMMON

FRACTIONAL

BATCHES

(CONNECT

AS REQUIRED)

FULL BATCH

(NO CONNECTION)

TAN

GRY

PNK

GRINDER

INTERFACE

CONNECTOR

GRY

TAN

PNK

4

1

2

3

WHI/VIO

OPTIONAL 3-SET SELECTOR SWITCHES SHOWN

WITH TWO-GRINDER INTERFACE OPTION

L2

200 OR 240 VOLTS AC

2 WIRE

FRACTIONAL

BATCHES

(CONNECT

AS REQUIRED)

FULL BATCH

(NO CONNECTION)

TAN

GRY

PNK

WHI/VIO

1/4 BATCH
1/3 BATCH
1/2 BATCH
2/3 BATCH

3/4 BATCH
BATCH COMMON

GRINDER

INTERFACE

CONNECTOR

GRY

TAN

PNK

4

1

2

3

L
T

S
E
L
E
C
T
O
R

S

W

RED

WHI/ORA

WHI/VIO

WHI/GRN

WHI/YEL

RED

WHI/RED

WHI/GRN

1

RIGHT
BREW
TIMER

3

2

4
5

SOL

OPTIONAL

WATER BYPASS SOL.

RED

ORA

WHI/RED

WHI/BRN

YEL

RED

WHI/RED

WHI/GRN

SOL

OPTIONAL

WATER BYPASS SOL.

1

LEFT

BREW
TIMER

3

2

4
5

LEFT SW.

RIGHT SW.

WHI/VIO

SOL

K3

OPTIONAL

RECOVERY BOOSTER

WHI/RED

WHI/BRN

SOL

K2

OPTIONAL

RECOVERY BOOSTER

WHI/VIO

WHI/GRN

WHI/RED

RED

WHI/VIO

RED

100W WARMER

(NOT AVAILABLE ON

DUAL-TS)

100W WARMER

(NOT AVAILABLE ON

DUAL-TS)

BLK

SAFETY SW

RED

RED

L1

RED-12

RED-12

K1

N.O.

BLK-12

BLK-12

BLK-12

BLK

LIMIT THERMOSTAT

R
T

S
E
L
E
C
T
O
R

S

W

VIO

PROBE

PIN-20

1

4

3

2

LIQUID
LEVEL

BOARD

BLU

K1

RED

SOL

RED

RED

SW. & THERMOSTAT

READY INDICATORS

OPTIONAL

RECOVERY BOOSTER

BLK

BLU

K2 N.O.

K3 N.O.

RED

SCHEMATIC WIRING DIAGRAM DUAL-A & -B BREWER

(W/ONE-GRINDER INTERFACE)

GRN/YEL

RED-12

K1

N.O.

BLU

TANK HEATERS (TWO)

3300W EACH

1/4 BATCH
1/3 BATCH
1/2 BATCH
2/3 BATCH

3/4 BATCH
BATCH COMMON

FRACTIONAL

BATCHES

(CONNECT

AS REQUIRED)

FULL BATCH

(NO CONNECTION)

TAN

GRY

PNK

WHI/VIO

OPTIONAL 3-SET SELECTOR SWITCHES SHOWN

WITH ONE-GRINDER INTERFACE OPTION

L2

200 OR 240 VOLTS AC

2 WIRE

FRACTIONAL

BATCHES

(CONNECT

AS REQUIRED)

FULL BATCH

(NO CONNECTION)

TAN

GRY

PNK

WHI/VIO

1/4 BATCH
1/3 BATCH
1/2 BATCH
2/3 BATCH

3/4 BATCH
BATCH COMMON

L
T

S
E
L
E
C
T
O
R

S

W

RED

WHI/ORA

WHI/VIO

WHI/GRN

WHI/YEL

RED

WHI/RED

WHI/GRN

1

RIGHT
BREW
TIMER

3

2

4
5

SOL

OPTIONAL

WATER BYPASS SOL.

RED

ORA

WHI/RED

WHI/BRN

YEL

RED

WHI/RED

WHI/GRN

SOL

OPTIONAL

WATER BYPASS SOL.

1

LEFT

BREW
TIMER

3

2

4
5

LEFT SW.

RIGHT SW.

WHI/VIO

SOL

K3

OPTIONAL

RECOVERY BOOSTER

WHI/RED

WHI/BRN

SOL

K2

OPTIONAL

RECOVERY BOOSTER

WHI/VIO

WHI/GRN

WHI/RED

RED

WHI/VIO

RED

100W WARMER

(NOT AVAILABLE ON

DUAL-TS)

100W WARMER

(NOT AVAILABLE ON

DUAL-TS)

BLK

SAFETY SW

RED

RED

L1

RED-12

RED-12

K1

N.O.

BLK-12

BLK-12

BLK-12

BLK

LIMIT THERMOSTAT

GRIND

SELECTOR

SW

GRY

TAN

PNK

GRY

TAN

PNK

GRINDER INTERFACE

CONNECTOR

4

1

2

3

GRY

TAN

PNK

SCHEMATIC WIRING DIAGRAM DUAL-A & -B BREWER ECA

(W/TWO-GRINDER INTERFACE)

R
T

S
E
L
E
C
T
O
R

S

W

RED

WHI/ORA

WHI/VIO

WHI/GRN
WHI/YEL

RED

WHI/RED

WHI/GRN

L1

GRN/YEL

TANK HEATERS (TWO)

3300W EACH

BLK

1

RIGHT
BREW
TIMER

3

2

4
5

1/4 BATCH
1/3 BATCH
1/2 BATCH
2/3 BATCH

3/4 BATCH
BATCH COMMON

FRACTIONAL

BATCHES

(CONNECT

AS REQUIRED)

FULL BATCH

(NO CONNECTION)

TAN

GRY

PNK

GRINDER

INTERFACE

CONNECTOR

GRY

TAN

PNK

4

1

2

3

WHI/VIO

OPTIONAL 3-SET SELECTOR SWITCHES SHOWN

WITH TWO-GRINDER INTERFACE OPTION

SOL

OPTIONAL

WATER BYPASS SOL.

L2

200 OR 240 VOLTS AC

2 WIRE

RED

ORA

WHI/RED

WHI/BRN

YEL

RED

WHI/RED

WHI/GRN

SOL

OPTIONAL

WATER BYPASS SOL.

1

LEFT

BREW
TIMER

3

2

4
5

FRACTIONAL

BATCHES

(CONNECT

AS REQUIRED)

FULL BATCH

(NO CONNECTION)

TAN

GRY

PNK

WHI/VIO

1/4 BATCH
1/3 BATCH
1/2 BATCH
2/3 BATCH

3/4 BATCH
BATCH COMMON

GRINDER

INTERFACE

CONNECTOR

GRY

TAN

PNK

4

1

2

3

LEFT SW.

RIGHT SW.

WHI/VIO

L
T

S
E
L
E
C
T
O
R

S

W

SOL

K1

OPTIONAL

RECOVERY BOOSTER

WHI/RED

WHI/BRN

SOL

K2

OPTIONAL

RECOVERY BOOSTER

WHI/VIO

WHI/GRN

GRY

K2 N.O.

WHI/RED

RED

TANK HEATER

SW

RED

GRY

GRY

ELECTRONIC

CONTROL

ASSY

1

2

5
4

7
6

3

W

H

I

W

H

I

t

°

TAN

BLU

WHI/BRN

PIN 20

(PROBE)

SOL

GRN

WHI/BLU

INTERLOCK

ASSY

PNK

GRY

LIMIT

THERMOSTAT

WHI-12

BLK-12

BLK-12

BLU-12

BLK-12

BLU-12

K1 N.O.

SAFETY SW

RED

RED

READY

L.E.D.

PNK

GRY

BLK

BLU-12

BLU-12

RED-12

OPTIONAL RECOVERY BOOSTER

BRN/BLK

RED/BLK

WHI/ORA

ORA

RED

WHI/VIO

RED

100W WARMER

(NOT AVAILABLE ON

DUAL-TS)

100W WARMER

(NOT AVAILABLE ON

DUAL-TS)

SCHEMATIC WIRING DIAGRAM DUAL-A & -B BREWER ECA

(W/ONE-GRINDER INTERFACE)

R
T

S
E
L
E
C
T
O
R

S

W

RED

WHI/ORA

WHI/VIO

WHI/GRN
WHI/YEL

RED

WHI/RED

WHI/GRN

L1

GRN/YEL

TANK HEATERS (TWO)

3300W EACH

BLK

1

RIGHT
BREW
TIMER

3

2

4
5

1/4 BATCH
1/3 BATCH
1/2 BATCH
2/3 BATCH

3/4 BATCH
BATCH COMMON

FRACTIONAL

BATCHES

(CONNECT

AS REQUIRED)

FULL BATCH

(NO CONNECTION)

TAN

GRY

PNK

WHI/VIO

OPTIONAL 3-SET SELECTOR SWITCHES SHOWN

WITH ONE-GRINDER INTERFACE OPTION

SOL

OPTIONAL

WATER BYPASS SOL.

L2

200 OR 240 VOLTS AC

2 WIRE

RED

ORA

WHI/RED

WHI/BRN

YEL

RED

WHI/RED

WHI/GRN

SOL

OPTIONAL

WATER BYPASS SOL.

1

LEFT

BREW
TIMER

3

2

4
5

FRACTIONAL

BATCHES

(CONNECT

AS REQUIRED)

FULL BATCH

(NO CONNECTION)

TAN

GRY

PNK

WHI/VIO

1/4 BATCH
1/3 BATCH
1/2 BATCH
2/3 BATCH

3/4 BATCH
BATCH COMMON

LEFT SW.

RIGHT SW.

WHI/VIO

L
T

S
E
L
E
C
T
O
R

S

W

SOL

K1

OPTIONAL

RECOVERY BOOSTER

WHI/RED

WHI/BRN

SOL

K2

OPTIONAL

RECOVERY BOOSTER

WHI/VIO

WHI/GRN

GRY

K2 N.O.

WHI/RED

RED

TANK HEATER

SW

RED

GRY

GRY

ELECTRONIC

CONTROL

ASSY

1

2

5
4

7
6

3

W

H

I

W

H

I

t

°

TAN

BLU

WHI/BRN

PIN 20

(PROBE)

SOL

GRN

WHI/BLU

INTERLOCK

ASSY

PNK

GRY

LIMIT

THERMOSTAT

WHI-12

BLK-12

BLK-12

BLU-12

BLK-12

BLU-12

K1 N.O.

SAFETY SW

RED

RED

READY

L.E.D.

PNK

GRY

BLK

BLU-12

BLU-12

RED-12

OPTIONAL RECOVERY BOOSTER

BRN/BLK

RED/BLK

WHI/ORA

ORA

RED

WHI/VIO

RED

100W WARMER

(NOT AVAILABLE ON

DUAL-TS)

100W WARMER

(NOT AVAILABLE ON

DUAL-TS)

GRIND

SELECTOR

SW

GRY

TAN

PNK

GRY

TAN

PNK

GRINDER INTERFACE

CONNECTOR

4

1

2

3

GRY

TAN

PNK

10566 032300

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