57

PREHEAT AND DHW FUNCTION

INSTALLATION

FAULT FINDING

& DIAGRAMS

Tap open

(recognised

by flow turbine)

Wait

5 seconds

DOMESTIC

HOT

WATER

DEMAND

(priority over

all other

demands)

Gas valve OFF.

Burner shut down if primary temperature 94°C

(until 84°C)

Over temperature shut- down if water tempera- ture is 8°C above set value.

Fan (& gas) modulation to achieve set temperature (40-60°C)

DEMAND

END

& SERVICING INSTRUCTIONS FOR

POWER

 

BLUE

SWITCH

 

LIGHT

 

ON

 

ON

ECO button

not

illuminated *

(ie preheat requested)

AND

Diverter valve

 

Fan to

 

IGNITION

 

GREEN

in DHW

 

 

 

FLAME

 

start

 

SEQUENCE

 

position

 

 

 

LIGHT

 

speed.

 

(see detail)

 

Pump ON.

 

 

 

ON

 

 

 

 

 

Gas valve

OFF

Pump run 3

minutes

Fan run 30

seconds

WORCESTER GREENSTAR 24 i junior/28 i junior 8 716 107 336b (11/05)

*Set by

pressing ECO button. If pro- grammer is fitted this is set by a combination of programmer (DHW) demand and ECO button.

20minutes since last pre- heat demand

AND

temperature at least 10° below set point.

PREHEAT

DEMAND

LOCKOUT

 

 

IGNITION SEQUENCE

 

 

 

 

 

Fan (& gas)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

modulation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to achieve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

(55°C)

 

 

 

 

Spark

 

 

 

 

BURNER

 

 

 

 

 

 

 

 

 

 

 

 

 

ignition

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LIT?

 

 

 

 

 

 

 

 

 

 

 

4 seconds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

NO

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5th

 

 

 

 

Stop spark.

 

 

 

 

 

 

 

 

 

 

 

 

 

Wait

 

 

 

 

 

 

 

 

 

 

attempt?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10 seconds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DEMAND

END

Gas valve

OFF

Stop pump

Stop fan

PREHEAT AND DHW FUNCTION

Page 58
Image 58
Bosch Appliances 28i junior, 24i junior manual Preheat and DHW Function

28i junior, 24i junior specifications

Bosch Appliances has long been synonymous with quality and innovation in the kitchen. Among its notable offerings, the Bosch 24i Junior stands out as a compact yet powerful dishwasher that caters to modern household needs. This appliance is designed to provide efficient cleaning while conserving valuable space in smaller kitchens.

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