Bosch WORCESTER GREENSTAR 25CDi Bedienungsanleitung

Dieses Handbuch passt für folgende Modelle

11

Inhaltsverzeichnis

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GREENSTAR

CDi

»í'

WALL

HUNG

RSF

GAS-FIRED

CONDENSING

COMBINATION

BOILER

FOR

SEALED

CENTRAL

HEATING

SYSTEMS

AND

MAINS

FED

DOMESTIC

HOT

WATER

THE

APPLIANCE

IS

FOR

USE

WITH

NATURAL

GAS

OR

LP.G.

(Cat

II

2H3P

TYPE

C13

C33)

NATURAL

GAS:

WORCESTER

GREENSTAR

25CDÍ

GC

NUMBER

47-311-92

WORCESTER

GREENSTAR

30CDÍ

GC

NUMBER

47-311-93

WORCESTER

GREENSTAR

35CDÍ

GC

NUMBER

47-311-94

WORCESTER

GREENSTAR

40CDÍ

GC

NUMBER

47-311-95

LIQUID

PETROLEUM

GAS:

WORCESTER

GREENSTAR

25CDÍ

GC

NUMBER

47-311-96

WORCESTER

GREENSTAR

30CDÍ

GC

NUMBER

47-311-97

WORCESTER

GREENSTAR

35CDÍ

GC

NUMBER

47-311-98

WORCESTER

GREENSTAR

40CDÍ

GC

NUMBER

47-406-01

5^/ORCESTER

INSTRUCTION

MANUAL

INSTALLATION,

COMMISSIONING

SERVICING

_______

ÇbenchmariÇ

j

Bosch

Group

CONTACT

INFORMATION

INSTALLATION

SERVICING

INSTRUCTIONS

WORCESTER

BOSCH:

PLEASE

READ

THESE

INSTRUCTIONS

CAREFULLY

BEFORE

STARTING

INSTALLATION.

TECHNICAL:

SERVICE:

SPARES:

LITERATURE:

TRAINING:

SALES:

WEBSITE:

08705

266241

08457

256206

01905

752571

01905

752556

01905

752526

01905

752640

www.worcester-bosch.co.uk

THESE

INSTRUCTIONS

ARE

APPLICABLE

TO

THE

WORCESTER

BOSCH

APPLIANCE

MODEL(S)

STATED

ON

THE

FRONT

COVER

OF

THIS

MANUAL

ONLY

AND

MUST

NOT

BE

USED

WITH

ANY

OTHER

MAKE

OR

MODEL

OF

APPLIANCE.

THE

INSTRUCTIONS

APPLY

IN

THE

UK

ONLY

AND

MUST

BE

FOLLOWED

EXCEPT

FOR

ANY

STATUTORY

OBLIGATION.

THIS

APPLIANCE

MUST

BE

INSTALLED

BY

A

COMPETENT

PERSON.

FAILURE

TO

INSTALL

CORRECTLY

COULD

LEAD

TO

PROSECUTION.

WATER

TREATMENT:

FERNOX

01799

550811

www.fernox.com

SENTINEL

0151

420

9595

www.betzdearborn.com/sentinel

FLUE

TERMINAL

GUARD:

TOWER

FLUE

COMPONENTS

VALE

RISE

TONBRIDGE

TN9

1TB

IF

YOU

ARE

IN

ANY

DOUBT

CONTACT

WORCESTER

BOSCH

TECHNICAL

HELPLINE.

DISTANCE

LEARNING

AND

TRAINING

COURSES

ARE

AVAILABLE

FROM

WORCESTER

BOSCH.

PLEASE

LEAVE

THESE

INSTRUCTIONS

THE

USER

GUIDE

AND

THE

COMPLETED

BENCHMARK

LOG

BOOK

OR

A

CERTIFICATE

CONFIRMING

COMPLIANCE

WITH

IS

813

(EIRE

ONLY)

WITH

THE

USER

OR

AT

THE

GAS

METER

AFTER

INSTALLATION

OR

SERVIC



ING.

ABBREVIATIONS

USED

IN

THIS

MANUAL:

0

Diameter

NG

Natural

Gas

LPG

Liquid

Petroleum

Gas

CH

Central

Heating

DHW

Domestic

Hot

Water

IP

Ingress

Protection

SEDBUK

Seasonal

Efficiency

of

Domestic

Boilers

in

the

United

Kingdom

STORE

THE

APPLIANCE

IN

A

DRY

AREA

PRIOR

TO

INSTALLATION.

SYMBOLS

USED

IN

THIS

MANUAL:

Domestic

hot

water

Time

clock

CH

only

Central

heating

Program

mer/timer

A

Cold

water

main

supply

Room

thermostat

LIFTING

AND

CARRYING

PRECAUTIONS:

•

Lift

only

a

manageable

weight,

or

ask

for

help.

•

When

lifting

the

boiler,

bend

the

knees,

and

keep

the

back

straight

and

feet

apart.

•

Do

not

lift

and

twist

at

the

same

time.

•

Lift

and

carry

the

boiler

close

to

the

body

•

Wear

protective

clothing

and

gloves

to

protect

from

any

sharp

edges

Electricity

supply

Gas

supply

Wait

time

period

s

—

SERVICING

INSTRUCTIONS

INSTALLATION

&

SERVICING

INSTRUCTIONS

FOR

WORCESTER

BOSCH

GREENSTAR

25CDi/30CDi/35CDi/40

CDi

6

720

611

927b(04/05)

^NORCESTER

Bosch

Group

CONTENTS

SAFETY

&

REGULATIONS

SAFETY

PRECAUTIONS

4

INSTALLATION

REGULATIONS

4

APP

LIANCE

INFORMATION

_____________________________________________________________

GENERAL

INFORMATION

5

TECHNICAL

DATA

________________________________________________________________6

LAYOUT

COMPONENTS

7-8

PRE-

INSTALLATION

____________________________________________________________________

CLEANING

PRIMARY

SYSTEMS

9

MAINS

SUPPLIES

10

WATER

SYSTEMS

PIPEWORK

__________________________________________________

11

CONDENSATE

PIPEWORK

______________________________________________________

12

BOILER

LOCATION

CLEARANCES

___________________________________________

13-14

PLUMBING

MANIFOLD

__________________________________________________________

15

FLUE

TERMINAL

POSITIONS

_____________________________________________________

16

FLUE

OPTIONS

17-20

INST

ALLATION

_________________________________________________________________________

UNPACKING

WALL

FRAME

AND

ANCILLARY

ITEMS

~21~

WALL

MOUNTING

PLATE

/

FLUE

OPENING

________________________________________

22

CHARGING

LINK

(FILLING

LOOP)

________________________________________________

23

UNPACKING

THE

APPLIANCE

24

FITTING

THE

APPLIANCE

/

BOILER

CONNECTIONS

________________________________

25

FLUE

INSTALLATION

__________________________________________________________

26-28

CONDENSATE

CONNECTION

___________________________________________________

29

ELECTRICAL

___________________________________________________________________

30

POSITION

OF

WIRED

COMPONENTS

31

COM

MISSIONING

_____________________________________________________________________

PRE-COMMISSIONING

CHECKS

________________________________________________

32

FILLING

THE

SYSTEM

________________________________________________________

33

STARTING

THE

APPLIANCE

34

WATER

TREATMENT

____________________________________________________________

35

COMMISSIONING

______________________________________________________________

36

FINISHING

COMMISSIONING

37

SER

VICING

&

SPARES

__________________________________________________________________

INSPECTION

AND

SERVICE

__________________________________________________

38-42

REPLACEMENT

OF

PARTS

____________________________________________________

43-52

SETTING

THE

GAS/AIR

RATIO

____________________________________________________

53

SHORT

PARTS

LIST

54

CON

VERSION

KITS

_____________________________________________________________________

L.P.G.

CONVERSION

55

FAU

LT

FINDING

&

DIAGNOSIS

___________________________________________________________

FAULTFINDING

_________________________________________________________________

56

CENTRAL

HEATING

FUNCTION

__________________________________________________

57

PREHEAT

AND

DHW

FUNCTION

58

PROTECTION

FUNCTION

59

INSTALLATION

&

SERVICING

INSTRUCTIONS

FOR

WORCESTER

BOSCH

GREENSTAR

25CDi/30CDi/35CDi/40CDi

6

720

611

927b

(04/05)

CONTENTS

^WORCESTER

Bosch

Group

SAFETY

PRECAUTIONS

INSTALLATION

REGULATIONS

SAFETY

REGULATIONS

IF

YOU

SMELL

GAS:

X

DON

’

T

SMOKE

OR

STRIKE

MATCHES

X

DON

’

T

TURN

ELECTRICAL

SWITCHES

ON

OR

OFF

✓

DO

PUT

OUT

NAKED

FLAMES

✓

DO

OPEN

DOORS

AND

WINDOWS

✓

DO

KEEP

PEOPLE

AWAY

FROM

THE

AREA

AFFECTED

✓

DO

TURN

OFF

THE

CONTROL

VALVE

AT

THE

METER

✓

TELEPHONE

YOUR

GAS

COMPANY

A

Benchmark

Log

Book

is

provided

by

the

manufacturer

for

the

installer

to

complete

including

their

CORGI

registration

number

to

confirm

that

the

boiler

has

been

installed,

commissioned

and

serviced

according

to

the

manufacturer

’

s

instructions.

IMPORTANT:

The

completed

Benchmark

Checklist

will

be

required

in

the

event

of

any

warranty

work

and

may

be

required

by

the

local

Building

Control

Inspector.

HEALTH

&

SAFETY

The

appliance

contains

no

asbestos

and

no

substances

have

been

used

in

the

construction

process

that

contravene

the

COSHH

Regulations

(Control

of

Substances

Hazardous

to

Health

Regulations

1988).

COMBUSTIBLE

AND

CORROSIVE

MATERIALS

Do

not

store

or

use

any

combustible

materials

(paper,

thinners,

paints

etc.)

inside

or

within

the

vicinity

of

the

appliance.

Chemically

aggressive

substances,

such

as

halogenated

hydrocarbons

containing

chlorine

or

fluorine

compounds

can

corrode

the

appliance

and

invalidate

any

warranty.

FITTING

&

MODIFICATIONS

Fitting

the

appliance

and

any

controls

to

the

appliance

may

only

be

carried

out

by

a

competent

engineer

in

accordance

with

the

Gas

Safety

(Installation

and

Use)

Regulations

1998.

Flue

systems

must

not

be

modified

in

any

way

other

than

as

described

in

the

fitting

instructions.

Any

misuse

or

unauthorised

modifications

to

the

appliance,

flue

or

associated

components

and

systems

could

invalidate

the

warranty.

The

manufacturer

accepts

no

liability

arising

from

any

such

actions,

excluding

statutory

rights.

SERVICING

Advise

the

user

to

have

the

system

serviced

annually

by

a

competent,

qualified

engineer

(such

as

British

Gas

or

CORGI

registered

personnel)

using

approved

spares,

to

help

maintain

the

economy,

safety

and

reliability

of

the

appliance.

IMPORTANT

-

The

service

engineer

must

complete

the

Service

Record

in

the

Benchmark

section

after

each

service.

Gas

Safety

(Installation

Use)

Regulations:

All

gas

appliances

must

be

installed

by

a

competent

person

in

accordance

with

the

above

regulations.

Failure

to

install

appliances

correctly

could

lead

to

prosecution.

The

appliance

must

be

installed

in

accordance

with,

and

comply

to,

the

current:

Gas

Safety

Regulations,

IEE

Regulations,

Building

Regulations,

Building

Standards

(Scotland)

(Consolidation),

Building

Regulations

(Northern

Ireland),

local

water

by-laws,

Health

Safety

Document

635

(The

Electricity

at

Work

Regulations

1989)

and

any

other

local

requirements.

British

Standards:

The

relevant

British

Standards

should

be

followed,

including:

BS7074:1

:

Code

of

practice

for

domestic

and

hot

water

supply

BS6891

:

Installation

of

low

pressure

gas

pipework

up

to

28mm

(R1)

BS5546

:

Installation

of

gas

hot

water

supplies

for

domestic

purposes

EN:12828

:

Central

heating

for

domestic

premises

BS5440:1

:

Flues

and

ventilation

for

gas

appli



ances

of

rated

heating

not

exceeding

70kW

(net)

:

Flues

BS5440:2

:

Flues

and

ventilation

for

gas

appli



ances

of

rated

heating

not

exceeding

70kW

(net)

:

Air

Supply

BS7593

:

Treatment

of

water

in

domestic

hot

water

central

heating

systems

BS

6798

:

Installation

of

gas

fired

boilers

of

rated

input

up

to

70kW

(net)

Where

no

specific

instruction

is

given,

reference

should

be

made

to

the

relevant

British

Standard

codes

of

Practice.

L.P.G.

Installation:

An

appliance

using

L.P.G.

must

not

be

installed

in

a

room

or

internal

space

below

ground

level

unless

one

side

of

the

building

is

open

to

the

ground.

Timber

framed

buildings:

Where

the

boiler

is

to

be

fitted

to

a

timber

framed

building

the

guidelines

laid

down

in

BS5440:

Part

1

and

IGE

"Gas

Installations

in

Timber

Frame

Buildings

”

should

be

adhered

to.

Potable

water:

All

seals,

joints

and

compounds

(including

flux

and

solder)

and

components

used

as

part

of

the

secondary

domestic

water

system

must

be

approved

by

WRAS.

s

SAFETY

PRECAUTIONS

INSTALLATION

REGULATIONS

INSTALLATION

&

SERVICING

INSTRUCTIONS

FOR

WORCESTER

BOSCH

GREENSTAR

25CDi/30CDi/35CDi/40

CDi

6

720

611

927b

(04/05)

^fORCESTER

Bosch

Group

GENERAL

INFORMATION

STANDARD

PACKAGE:

A-

Wall

hung

gas

fired

condensing

combi

boil



er

for

central

heating

and

domestic

hot

water

Wall

mounting

plate

Hanging

bracket

Pre-plumbing

manifold

Hardware

pack

Charging

Link

Assembly

B-

C-

D-

E-

F-

G

-

Literature

pack

H

-

Bottom

panel

I

-

Trap

/

Syphon

Outlet

Connection

(22

mm

Plastic

Pipe)

67

20611927-11.

10

APPLIANCE

INFORMATION

440mm

SPECIFICATIONS:

Pre-wired

and

pre-plumbed

Galvanised

steel

inner

frame

Digital

control

system

Automatic

ignition

Direct

burner

ignition

Built-in

frost

thermostat

(boiler

protection)

Built-in

fault

finding

diagnostics

Modulating

automatic

gas

valve

Combustion

air

fan

with

speed

regulator

CH

temperature

sensor

control

Pump

anti-seizure

protection

Flue

gas

temperature

limiter

Condensate

trap

syphon

DHW

flow

sensor

temperature

control

Plate

type

DHW

heat

exchanger

Modulating

circulating

pump

INSTALLATION

&

SERVICING

INSTRUCTIONS

FOR

WORCESTER

BOSCH

GREENSTAR

25COI/30CDÍ/35COÍ/4OCDI

6

720

611

927b

(04/05)

4

GENERAL

INFORMATION

TECHNICAL

DATA

AAPPLIANCE

INFORMATION

DESCRIPTION

UNITS

25CDÍ

NATURAL

GAS

25CDÍ

L.P.G.

30CDi

35CDÍ 40CDÍ

30CDÍ

35CDÍ

Domestic

hot

water

Min.

heat

input

kW

8.0

8.0

8.0 9.8

9.1 9.1 9.1

Max.

rated

heat

output

kW

25.8 30.9 35.0

40.0

25.8

30.9

35.0

Max.

rated

heat

input

kW

25.8

30.9 35.0 40.0

25.8

30.9

35.0

Max.

mains

inlet

pressure

bar

10

10

10

10

10 10

10

Min.

mains

inlet

pressure

(working)

for

max

flow

bar

1.2

1.4 1.5

1.7

1.2 1.4

1.5

Min.

mains

inlet

pressure

(working)

for

operation

bar

0.2

0.2

0.2 0.2

0.2

0.2

0.2

Domestic

Hot

Water

temperature

range

°C

40-60 40-60 40-60

40-60

40-60

40-60 40-60

Domestic

Hot

Water

specific

rate

-

30°C

rise

l/min

11.0

13.3

16.5

17.3

11.0

13.3 16.5

Max.

Domestic

Hot

Water

flow

rate

-

40°C

rise

+/

—

15%

l/min

9

11

12

14

9

11

12

Central

Heating

Max.

rated

heat

input

kW

25.8 30.9 30.9 30.9

25.8

30.9

30.9

Max.

rated

heat

output

net

40/30°C

kW

26.8

32.1 32.1 32.1

26.8

32.1

32.1

Max.

rated

heat

output

net

50/30°C

kW

26.6

31.8

31.8 31.8

26.6

31.8 31.8

Max.

rated

heat

output

net

80/60°C

kW

25.0 30.0 30.0 30.0 25.0

30.0 30.0

Min.

rated

heat

output

net

40/30°C

kW

8.6

8.6

8.6

10.6

9.8

9.8

9.8

Min.

rated

heat

output

net

50/30°C

kW

8.6

8.6

8.6

10.5

9.7

9.7

9.7

Min.

rated

heat

output

net

80/60°C

kW

7.7 7.7 7.7

9.4

8.7

8.7

8.7

Mtn.

rated

heat

input

net

kW

8.0

8.0 8.0

9.8

9.1

9.1

9.1

Max.

flow

temperature

°C

nom.

90

nom.

90

nom.

90

nom.

90

nom.

90

nom.

90

nom.

90

Max.

permissible

operating

pressure

bar

3.0

3.0

3.0 3.0

3.0

3.0

3.0

Available

pump

head

at

21

°C

system

temperature

rise

m

2222

2

22

Gas

flow

rate

-

Max.

10

minutes

from

lighting

Natural

Gas

G20

m

3

/h

2.6

3.2

3.7

4.4

Propane

Gas

(LPG)

kg/h

-

2.0

2.4

2.7

Flue

Flue

Gas

Temp.

80/60°C,

rated

min.

load

°C

70/58

76/58 76/58

86/58

70/58 76/58

76/58

Flue

Gas

Temp,

40/30°C,

rated

min.

load

°C

51/33

55/33 55/33 58/35

51/33

55/33

55/33

CO2

level

at

max.

rated

heat

output

%

9.6

9.6

9.6

9.7

10.8

10.8

10.8

CO2

level

at

min.

rated

heat

output

%

9.0

9.0 9.0

9.1

10,5

10.5

10.5

NOx

-

class

555555

5

Condensate

Max.

condensation

rate

l/h

2.3

2.7 2.7

2.7

2.3 2.7

2.7

pH

value,

approx.

4.8

4.8

4.8 4.8

4.8

4.8 4.8

Electrical

Electrical

power

supply

voltage

AC...V

230 230 230 230 230 230

230

Frequency

Hz

50

50

50

50 50

50

50

Max.

power

consumption

W

125 135

160

170

125

135

160

General

Data

SEDBUK

band

A

A

AA

A

A

A

Appliance

protection

rating

IP

X4D

X4D

X4D X4D

X4D X4D X4D

Appliance

protection

rating

with

mechanical

or

RF

mech.

timer

fitted

IP

20 20

20

20 20

20

20

Permissible

ambient

temperatures

°C

0-50

0-50 0-50

0-50 0-50

0-50

0-50

Nominal

capacity

of

appliance

1

3.75 3.75 3.75

3.75 3.75

3.75 3.75

Noise

output

level

dB(A)

40

44

44

47

40

44

44

Total

boiler

weight

(lift

weight)

kg

48.5

48.5

48.5 48.5 48.5 48.5 48.5

Packaged

boiler

weight

kg

57

57 57

57

57

57

57

SEDBUK

%

90.3 90.3

90.3

90.2 90.3 90.3

90.3

TECHNICAL

DATA

INSTALLATION

&

SERVICING

INSTRUCTIONS

FOR

WORCESTER

BOSCH

GREENSTAR

25CDÍ/30CDÍ/35CDÍ/40

CDi

6

720

511

927b

(04/05)

Bosch

Group

LAYOUT

COMPONENTS

The

diagram

opposite

shows

the

controls

in

the

servicing

position

and

excludes

the

outer

case.

1

FLAME

VIEWING

WINDOW

2

IGNITION

ELECTRODE

AND

FLAME

SENSE

ELECTRODE

3

HEAT

EXCHANGER

4

OVERH

EAT

TH

ERMOSTAT

5

ACCESS

POINT

FOR

CLEANING

HEAT

EXCHANGER

6

PLATE

TO

PLATE

DHW

HEAT

EXCHANGER

7

PUMP

8

SYSTEM

PRESSURE

GAUGE

9

DRAIN

POINT

W

10

MAINS

COLD

WATER

IN

11

CH

RETURN

12

CHARGING

LINK

ASSEMBLY

13

GAS

INLET

CONNECTION

22

mm

COMPRESSION

14

COVER

FOR

EXTERNAL

WIRING

CONNECTIONS

15

CONTROL

PANEL

IN

SERVICE

POSITION

16

ACCESS

COVER

FOR

TRANSFORMER

PCB

17

DHW

OUT

18

CH

FLOW

19

TRAP/SYPHON

OUTLET

CONNEC



TION

(22

mm

PLASTIC

PIPE)

20

INLET

PRESSURE

TEST

POINT

21

TRAP/SYPHON

22

GAS

VALVE

23

DHW

TEMPERATURE

SENSOR

24

AIR/GAS

ADJUSTMENT

SCREW

25

TESTING

POINT

FOR

FAN

PRESSURE

26

FAN

27

PRIMARY

SENSOR

28

EXPANSION

VESSEL

29

REMOVABLE

TOP

CASE

PANEL

FOR

SERVICING

APPLIANCE

INFORMATION

INSTALLATION

&

SERVICING

INSTRUCTIONS

FOR

WORCESTER

BOSCH

GREENSTAR

25COi/30CDi/35CDi/40CDi

6

TSO

611

927b

(04/05)

LAYOUT

COMPONENTS

i^fORCESTER

Bosch

Group

LAYOUT

COMPONENTS

APPLIANCE

INFORMATION

PLATE

TO

PLATE

DHW

HEAT

EXCHANGER

DRAIN

POINT

SYSTEM

PUMP

FLOW

TURBINE

UNUSED

PORT

AUTO

AIRVENT

FLOW

CONNECTION

FROM

BOILER

HEAT

EXCHANGER

DHW

SENSOR

CH

FLOW

CONNECTION

TO

SERVICE

VALVE

DHW

OUT

CONNECTION

COLD

WATER

IN

CONNECTION

CH

RETURN

CONNECTION

TO

SER



VICE

VALVE

DIVERTER

VALVE

PRESSURE

RELIEF

VALVE

COMPACT

HYDRAULIC

MOUNTING

SCREW

(2)

TO

BOILER

CH

TEMPERATURE

CONTROL

MAINS

ON/OFF

INDICATOR/DIAGNOS-

TIC

LIGHT

(BLUE)

DHW

TEMPERATURE

CONTROL

CENTRAL

HEATING

BOOST

BUTTON

SERVICE

BUTTON

BURNER

ON

INDICATOR

LIGHT

(GREEN)

MASTER

SWITCH

ON/OFF

HOLIDAY

BUTTON

ECO

BUTTON

FAULT

RESET

BUTTON

SYSTEM

PRESSURE

GAUGE

POSITION

FOR

OPTIONAL

PROGRAMMER

DISPLAY

LAYOUT

COMPONENTS

INSTALLATION

&

SERVICING

INSTRUCTIONS

FOR

WORCESTER

BOSCH

GREENSTAR

25CDi/30CDi/35COi/40

CD!

5

720

611

927b

(04/05)

S^ORCESTER

Bosch

Group

CLEANING

PRIMARY

SYSTEMS

IMPORTANT:

All

the

following

Pre-Installation

sections

must

be

read

and

requirements

met

before

starting

boiler

or

flue

installation.

IMPORTANT:

Debris

from

the

system

can

damage

the

boiler

and

reduce

efficiency.

Failure

to

comply

with

the

guidelines

for

the

use

of

water

treatment

with

the

appli



ance

will

invalidate

the

appliance

warranty.

CAUTION:

ISOLATE

THE

MAINS

SUPPLIES

BEFORE

STARTING

ANY

WORK

AND

OBSERVE

ALL

RELEVANT

SAFETY

PRECAUTIONS.

BEFORE

CLEANING

THE

SYSTEM:

ENSURE

THE

SYSTEM

AND

PIPEWORK

IS

IN

GOOD

WORKING

ORDER

KEEP

THE

EXISTING

BOILER/

CIRCULATING

PUMP

WHERE

POSSIBLE

OR

USE

A

POWER

FLUSHING

MACHINE

TO

AID

THE

CLEANSING

PROCEDURE

BEFORE

INSTALLING

A

NEW

BOILER.

CLEANING

THE

PRIMARY

SYSTEM:

1

Fill

the

system

with

cold

water

and

check

for

leaks.

2

Open

all

drain

cocks

and

drain

the

system.

3

Close

drain

cocks

and

add

a

suitable

flushing

agent

at

the

correct

strength

for

the

system

condition

in

accordance

with

the

manufacturer

’

s

instructions.

INSTALLATION

►

Circulate

the

flushing

agent

before

the

boiler

is

fired

up.

4

Run

the

boiler/system

at

normal

operating

temperature

as

directed

by

the

manufacturer

of

the

flushing

agent.

5

Drain

and

thoroughly

flush

the

system

to

remove

the

flushing

agent

and

debris.

Flushing

Agent

INSTALLATION

&

SERVICING

INSTRUCTIONS

FOR

WORCESTER

BOSCH

GREENSTAR

25CDi/30CDi/35CDi/40CDi

6

720

611

927b

(04/05)

CLEANING

PRIMARY

SYSTEMS

^WORCESTER

Bosch

Group

MAINS

SUPPLIES

INSTALLATION

MAINS

WATER

EXPANSION

VESSEL:

A

-

Mini

expansion

vessel,

part

No.

7

716

102

105

B

-

Mains

water

inlet

pipe

C

-

Non-return

valve

D

-

Boiler

D

A

“

"

k

r

’

*.

ELECTRIC

SUPPLY:

•

Supply:

230V

-

50Hz

(See

Technical

Data

for

IP

ratings.)

•

Cable:

PVC

insulated

0.75m

(24

x

0.2mm)

temperature

rated

to

90°C.

•

External

3A

fuse

to

BS1362.

•

The

appliance

must

be

earthed.

•

All

pipes

to

the

boiler

must

be

cross



bonded.

•

Wiring

must

comply

with

I

EE

wiring

regula



tions

and

any

local

regulations

which

may

apply

to

fixed

wiring

to

a

stationary

appli



ance.

GAS

SUPPLY:

•

Boilers

using

NG

must

be

connected

to

a

governed

meter.

•

LPG

boilers

must

be

connected

to

a

regulator.

•

Installation

and

connection

of

the

gas

sup



ply

to

the

boiler

must

be

in

accordance

with

BS6891.

•

Under

no

circumstances

should

the

size

of

the

gas

supply

pipe

be

less

than

that

of

the

appliance

inlet

connection.

•

The

meter

or

regulator

and

pipework

to

the

meter

must

be

checked,

preferably

by

the

gas

supplier,

to

ensure

it

is

in

good

working

order

and

can

meet

the

gas

flow

and

pres



sure

requirements

in

addition

to

the

demand

from

any

other

appliance

being

served.

This

does

not

include

the

pipework

from

the

meter

to

the

boiler.

WATER

SUPPLY:

Water

Mains

Pressure:

•

Minimum

mains

water

pressure

1.5

up

to

2.5

bar

(see

technical

data

on

page

6)

for

maximum

performance.

•

Maximum

mains

fed

water

pressure

10

bar.

If

necessary,

fit

a

pressure

reducing

valve.

IMPORTANT:

Non-return

back

flow

pre



vention

devices

(including

those

associat



ed

with

water

meters)

fitted

to

the

mains

water

supply

can

cause

a

pressure

build

up

which

could

damage

the

boiler

and

other

household

appliances.

•

Where

the

mains

water

supply

has

a

non



return,

back

flow

prevention

valve

fitted,

a

mini

expansion

vessel

(A)

should

be

con



nected

to

the

mains

water

inlet

pipe

(B)

between

the

non-return

valve

(C)

and

the

boiler

(D)

as

shown

opposite.

Use

in

hard

water

areas:

Normally

there

is

no

need

for

water

treatment

to

prevent

scale

formation

as

the

maximum

temperature

of

the

DHW

heat

exchanger

is

limited

by

the

electronic

control

circuit.

In

areas

where

the

temporary

water

hardness

exceeds

200

ppm

consideration

may

need

to

be

given

to

the

fitting

of

a

scale

prevention

device.

In

such

circumstances

the

advice

of

the

local

water

authority

should

be

sought.

MAINS

SUPPLIES

INSTALLATION

&

SERVICING

INSTRUCTIONS

FOR

WORCESTER

BOSCH

GREENSTAR

25CDÍ/30CDI/35CDI/40

CDS

6

720

611

927b

(04/05)

^W

orcester

Bosch

Group