Bosch Worcester GREENSTAR CDi Series User manual

GREENSTAR CDi
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
L.P.G. (Cat II 2H3P TYPE C13 & C33)
NATURAL GAS:
WORCESTER GREENSTAR 25CDi
GC NUMBER 47-311-92
WORCESTER GREENSTAR 30CDi
GC NUMBER 47-311-93
WORCESTER GREENSTAR 37CDi
GC NUMBER 47-406-08
WORCESTER GREENSTAR 42CDi
GC NUMBER 47-406-10
LIQUID PETROLEUM GAS:
WORCESTER GREENSTAR 25CDi
GC NUMBER 47-311-96
WORCESTER GREENSTAR 30CDi
GC NUMBER 47-311-97
WORCESTER GREENSTAR 37CDi
GC NUMBER 47-406- 09
WORCESTER GREENSTAR 42CDi
GC NUMBER 47-406-11
INSTRUCTION MANUAL
INSTALLATION,
COMMISSIONING
&SERVICING
(}enchmarf)

CONTACT INFORMATION
WORCESTER BOSCH:
TECHNICAL: 08705 266241
SERVICE: 08457
256206
SPARES: 01905 752571
LITERATURE: 01905 752556
TRAINING: 01905 752526
SALES: 01905 752640
WEBSITE: www.worcester-bosch.co.uk
WATER TREATMENT:
FERN OX 01799 550811
www.fernox.com
SENTINEL
0151 420 9595
www.betzdearborn.com/sentinel
FLUE TERMINAL GUARD:
TOWER FLUE COMPONENTS
VALE RISE
TONBRIDGE
TN9 1TB
STORE THE APPLIANCE IN A DRY AREA
PRIOR
TO INSTALLATION.
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
INSTALLATION &
SERVICING INSTRUCTIONS
INSTALLATION & SERVICING INSTRUCTIONS
PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATION.
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.
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
SYMBOLS USED IN
THIS MANUAL:
Domestic hot water Time clock C H only
• Central heating Programmer/timer
Cold water
main supply
Room thermostat
Electricity supply Wait time period
Gas supply
INSTALLATION & SERVICING INSTRUCTIONS
FOR WORCESTER BOSCH GREENSTAR 25CDI/30CDI/37CDI/42 co; ~ORCESTER
6 720 613 700a (2006/11) Bosch Group

CONTENTS
SAFETY & REGULATIONS
SAFETY PRECAUTIONS
INSTALLATION REGULATIONS
APPLIANCE INFORMATION
GENERAL INFORMATION
TECHNICAL
DATA
LAYOUT & COMPONENTS
PRE-INSTALLATION
CLEANING PRIMARY SYSTEMS
MAINS SUPPLIES
WATER SYSTEMS & PIPEWORK
CONDENSATE PIPEWORK
BOILER LOCATION & CLEARANCES
PLUMBING MANIFOLD
FLUE TERMINAL POSITIONS
FLUE OPTIONS
INSTALLATION
UNPACKING WALL FRAME AND ANCILLARY ITEMS
WALL MOUNTING
PLATE I FLUE OPENING
CHARGING LINK (FILLING LOOP)
UNPACKING THE APPLIANCE
FITTING THE APPLIANCE I BOILER
CONNECTIONS
FLUE INSTALLATION
CONDENSATE CONNECTION
ELECTRICAL
POSITION OF WIRED COMPONENTS
COMMISSIONING
PRE-COMMISSIONING CHECKS
FILLING THE SYSTEM
STARTING THE APPLIANCE
WATER TREATMENT
COMMISSIONING
FINISHING COMMISSIONING
SERVICING & SPARES
INSPECTION AND SERVICE
REPLACEMENT OF
PARTS
SETTING THE GAS/AIR RATIO
SHORT PARTS LIST
CONVERSION KITS
L.P.G. CONVERSION
FAULT FINDING & DIAGNOSIS
FAULT FINDING
CENTRAL HEATING FUNCTION
PREHEAT AND
DHW FUNCTION
PROTECTION FUNCTION
4
4
5
6
7-8
9
10
11
12
13-14
15
16
17-20
21
22
23
24
25
26-28
29
30
31
32
33
34
35
36
37
38-42
43-52
53
54
55
56
57
58
59
~ORCESTER
Bosch Group
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDV30CDV37CDci42CDI
6
720 613 700a (2006/11)
CONTENTS

SAFETY PRECAUTIONS
IF YOU SMELL GAS:
X DON'T
SMOKE OR STRIKE MATCHES
X DON'T TURN ELECTRICAL SWITCHES ON OR OFF
V' DO PUT OUT NAKED FLAMES
V' DO OPEN DOORS AND WINDOWS
V' DO KEEP PEOPLE AWAY FROM THE AREA AFFECTED
V' DO TURN OFF THE CONTROL VALVE AT THE METER
V' TELEPHONE THE NATIONAL GAS EMERGENCY SERVICE ON 0800111999
(/Jenc!Jmorl()
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.
INSTALLATION REGULATIONS
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, IE E 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.
CHwater:
Artificially softened water must not be used to
fill the central heating system.
SAFETY PRECAUTIONS INSTALLATION & SERVICING INSTRUCTIONS
FOR WORCESTER BOSCH GREENSTAR 25CDI/30CDI/37CDI/42 co; ~ORCESTER
& INSTALLATION REGULATIONS 6 720
613 700a (2006/11) Bosch Group

max.
760mm
H
0
69~
c
0
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~ORCESTER INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDV30CDV37CDc!42CD'
Bosch Group
6 720 613 700a (2006/11)
GENERAL INFORMATION
STANDARD
PACKAGE:
A- Wall hung gas fired condensing combi boil-
er for central heating and domestic hot water
B - Wall mounting plate
C -Hanging bracket
D - Pre-plumbing manifold
E - Hardware
pack
F- Charging Link Assembly
G - Literature
pack
H - Bottom panel
I -Trap I Syphon Outlet Connection
(22 mm Plastic Pipe)
B
/
D
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
GENERAL INFORMATION

TECHNICAL DATA
NATURAL GAS L.P.G.
DESCRIPTION UNITS 25CDi
30CDi 37CDi 42CDi 25CDi 30CDi 37CDi 42CDi
Central Heating
Max. rated heat input kW 25.8 30.9 30.9 30.9 25.8 30.9 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 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 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 30.0
Min. rated heat output net 40/30°C kW 8.6 8.6 10.6 10.6 12.4 12.4 15.7 15.7
Min. rated heat output net
50/30°C kW 8.6 8.6 10.5 10.5 12.3 12.3 15.5 15.5
Min. rated heat output net
80/60°C kW 7.7 7.7 9.4 9.4 11,0 11.0 13.9 13.9
Min. rated heat input net
kW 8.0 8.0 9.8 9.8 11.5 11.5 14.5 14.5
Max. flow temperature
•c
nom. 90 nom. 90 nom. 90 nom. 90 nom. 90 nom. 90 nom. 90 nom. 90
Max. permissible operating pressure bar 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
Available pump head at
21 •c system temperature rise m 2 2 2 2 2 2 2 2
Gas
flow rate- Max. 10 minutes from lighting
Natural Gas G20 2.6 3.2 3.9 4.4
Propane Gas (LPG) 2.0 2.4 2.9 3.3
Flue
Flue Gas Temp. 80/60°C, rated min. load
•c
70/58 76/58 83/58 87/58 70/58 76/58 83/58 87/58
Flue Gas Temp. 40/30°C, rated min. load
•c
51/33 55/33 60/35 66/35 51/33 55/33 60/35 66/35
C02 level at max. rated heat output % 9.6 9.6 9.7 9.7
11.5 11.5 11.5 11.5
C02 level at min. rated heat output % 9.0 9.0
9.1 9.1 10.5 10.5 10.5 10.5
NOx- class 5 5 5 5 5 5 5 5
Condensate
Max. condensation rate 2.3 2.7 2.7 2.7 2.3 2.7 2.7 2.7
pH value, approx. 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8
Electrical
Electrical power supply voltage
AC .. .V 230 230 230 230 230 230 230 230
Frequency Hz 50 50 50 50 50 50 50 50
Max. power consumption w 135 150 160 175 135 150 160 175
General Data
SEDBUK band A A A A A A A A
Appliance protection rating IP X4D 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 20
Permissible ambient temperatures
•c
0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50
Nominal capacity of appliance I 3.75 3.75 3.75 3.75 3.75 3.75 3.75 3.75
Noise output level (at
DHW inlet pressure 3 bar) dB(A) 40 44 45 47 40 44 45 47
Total boiler weight (lift weight) kg 48.5 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 57
SEDBUK % 90.3 90.1 90.1 90.1 90.3 90.1 90.1 90.1
TECHNICAL DATA
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDI/30CDI/37CDI/42 co; ~ORCESTER
6 720 613 700a (2006/11)
Bosch Group

28 ·---------
27 ------------
16 ·-
~ORCESTER
Bosch Group
---
---
---
---
---
2
-- 3
4
. 5
6
7
8
................ 12
---
........ 14
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDV30CDV37CDci42CDI
6
720 613 700a (2006/11)
LAYOUT &
COMPONENTS
The diagram opposite shows the controls in the
servicing position
and excludes the outer case.
FLAME VIEWING WINDOW
2 IGNITION ELECTRODE AND FLAME
SENSE ELECTRODE
3 HEAT EXCHANGER
4 OVERHEAT THERMOSTAT
5 ACCESS POINT FOR CLEANING HEAT
EXCHANGER
6
PLATE TO PLATE DHW
HEAT EXCHANGER
7 PUMP
8 SYSTEM PRESSURE GAUGE
9 DRAIN POINT
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 DHWOUT
18 CH FLOW
19 TRAP I SYPHON OUTLET CONNEC·
TION (22 mm PLASTIC PIPE)
20 INLET PRESSURE TEST POINT
21 TRAP I SYPHON
22 GAS
VALVE
23 DHW TEMPERATURE SENSOR
24 AIR I GAS ADJUSTMENT SCREW
25 TESTING POINT FOR FAN PRESSURE
26
FAN
27 PRIMARY SENSOR
28 EXPANSION VESSEL
29 REMOVABLE TOP CASE PANEL FOR
SERVICING
LAYOUT &
COMPONENTS

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LAYOUT & COMPONENTS
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LAYOUT & COMPONENTS
6
PLATE TO PLATE DHW HEAT
EXCHANGER
9 DRAIN POINT
32 SYSTEM PUMP
36 FLOW TURBINE
37 UNUSED PORT
38 AUTO AIR VENT
39 FLOW CONNECTION FROM BOILER
HEAT EXCHANGER
40
DHW SENSOR
41 CH FLOW CONNECTION TO SERVICE
VALVE
42 DHW OUT CONNECTION
43 COLD WATER
IN CONNECTION
44 CH RETURN CONNECTION
TO SER-
VICE
VALVE
45 DIVERTER VALVE
46 PRESSURE RELIEF VALVE
47 COMPACT HYDRAULIC MOUNTING
SCREW (2) TO BOILER
---•---47
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48 CH TEMPERATURE CONTROL
49 MAINS
ON/OFF INDICATOR/DIAGNOS-
TIC LIGHT (BLUE)
50
DHW TEMPERATURE CONTROL
51 CENTRAL HEATING BOOST BUTTON
52 SERVICE BUTTON
53 BURNER ON INDICATOR LIGHT
(GREEN)
54 MASTER SWITCH
ON/OFF
55 HOLIDAY BUTTON
56 ECO BUTTON
57
FAULT RESET BUTTON
58 SYSTEM PRESSURE GAUGE
59 POSITION FOR OPTIONAL
TEXT
DISPLAY WITH INTELLIGENT FUNC-
TIONALITY OR TIMER
60 DISPLAY
INSTALLATION & SERVICING INSTRUCTIONS
FOR WORCESTER BOSCH GREENSTAR 25CDI/30CDI/37CDI/42 co; ~ORCESTER
6 720 613 700a (2006/11)
Bosch Group

IMPORTANT: All the following Pre-Installation sections must be read and
requirements met before starting boiler or flue installation.
CAUTION: ISOLATE THE MAINS SUPPLIES BEFORE STARTING ANY WORK AND
OBSERVE ALL RELEVANT SAFETY PRECAUTIONS.
1
2
3
@
Valve
~
Flushing
Agent
~ORCESTER
Bosch Group
4
5
KEY
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDV30CDV37CDci42CD•
6 720 613 700a (2006/11)
CLEANING PRIMARY SYSTEMS
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.
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:
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.
~ 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.
CLEANING PRIMARY SYSTEMS

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
--------•
B c
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MAINS SUPPLIES
ELECTRIC SUPPLY:
Supply:
230V- 50Hz
(See Technical Data for IP ratings.)
Cable: PVC insulated
0. 75mm2
(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 lEE wiring regula-
tions and
any local regulations which may
apply to fixed wiring to a stationary appliance.
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.
For olive connections we recommend using
gas pipes with
minimum 0.9 mm wall thickness.
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 25CDI/30CDI/37CDI/42 co; ~ORCESTER
6 720 613 700a (2006/11)
Bosch Group

TYPICAL SEALED SYSTEM
A-
B-
C-
p-
R-
Appliance expansion vessel
-central heating
Extra expansion vessel
-central heating return
Drain
cock
Pressure relief discharge
Radiators
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6 720 611 927-02.10
~ORCESTER
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDV30CDV37CDci42CD•
6 720 613 700a (2006/11)
Bosch
Group
WATER SYSTEMS & PIPEWORK
PLASTIC PIPEWORK:
• Any plastic pipework must have a polymeric
barrier with
600 mm (minimum) length of
copper or steel pipe connected to the boiler.
Plastic
pipework used for underfloor heating
must be correctly controlled with a thermo-
static blending valve limiting the temperature
of the circuits to approx. 50°C.
The pipework from the boiler to the blending
valve must be
in copper or steel (protected
from corrosion).
CONNECTIONS/VALVES:
• All system connections, taps and mixing
valves must be capable
of sustaining a pres-
sure up
to 3 bar.
Radiator valves should conform
to
BS2767:10.
• All other valves should conform to BS 1010.
On
new installations, or extensions to exist-
ing systems where a radiator previously did
not exist, each radiator should be fitted with
a TRV, except the one fitted
in the same
room/area as the room thermostat.
On boiler only replacement jobs, it is recom-
mended, (but not mandatory,)
to fit a TRV on
each radiator. It is, however, a requirement,
for energy conservation purposes,
to recom-
mend
to the customer that a TRV is fitted to
each radiator.
• An automatic bypass may be required,
(downstream
of the pump), in order to main-
tain the minimum flow-rate through the appli-
ance.
• A drain
cock is required at the lowest point
on the system.
• An air vent is required at the highest point
on the system.
SHOWERS/BIDETS
If a shower head can be immersed in water
or
comes closer than 25 mm from the top
edge of a bath or shower tray spill over level
then
an anti-siphon device must be fitted to
the shower hose.
Bidets with
direct hot & cold mains water
can be used (with the approval
of the local
water authority) and must be the over rim
flushing type with shrouded outlets to pre-
vent the fitting
of hand held sprays.
SEALED PRIMARY SYSTEM:
The
CH sealed system must be filled using
the built-in filling link (see page 23).
Where the system volume is more than
100 litres or exceeds 2.65 bar at maximum
heating temperature
an extra expansion ves-
sel (B) must be fitted as close as possible
to the appliance in the central heating
return.
Pressurize the extra expansion vessel (B) to
the same figure as the expansion vessel
built into the appliance.
Do not use galvanised pipes or radiators.
WATER SYSTEMS & PIPEWORK

3
5
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Internal
sink/washing machine
drain
2 Internal waste drainage system
3 Soil/vent stack
4 External drainage system
5 External condensate absorption
point
A - Condensate from boiler
B- Sink
C- 22 mm 0 plastic condensate pipe
D- Gulley
E - Internal soil and vent stack
F -Serviceable waste trap (75
mm min)
G- 300 mm x 100 mm 0 sealed plastic
tube
H - Ground level
J - Drainage holes 50 mm from base of
tube
(12 mm 0 at 25 mm centres)
facing away from building
K - Limestone chippings
L-
M,O-
N-
Outside wall
Drain pipe
External drain
CONDENSATE PIPEWORK
CONDENSATE PIPEWORK:
The condensate pipe must be a minimum of
22
mm 0 plastic pipe.
The condensate
pipework must fall at least
50
mm per metre towards the outlet and
should
take the shortest practicable route.
The pipework must follow one of the options
shown opposite into
an internal serviceable
trap
(min. 75 mm) such as a sink/washing
machine) and discharge direct into a vent stack
(E) min. 450 mm above pipe invert or into a gul-
ley (D) below ground but above the water level.
Wherever possible the condensate dis-
charge pipe work should
be routed and ter-
minated internally. Should this not be possi-
ble, and the only available route is external,
the following conditions should be
observed:
Pipe work length should be kept to a
minimum and the route as vertical as
possible.
Where pipe work could be subjected to
extreme cold or wind chill, a weather
proof insulation should be used.
Alternatively the condensate pipework
could
be increased to a minimum 32 mm
without the requirement to insulate.
IMPORTANT:
Ensure there are no block-
ages in the pipe run.
PRESSURE RELIEF PIPEWORK
IMPORTANT: The
pressure relief valve is a
safety device for the boiler and if activated
may discharge boiling water or steam
through the relief valve drain pipe.
Care
should be taken when siting the out-
let pipe so that it does not cause an
obstruction or discharge above a window,
entrance
or other public access where it
could cause a hazard.
The pressure relief drain pipe (M,O) from
the boiler should be at least
15 mm diameter
copper pipe and
run downwards away from
any electrics or other hazard, preferably to
an external drain or soakaway.
Pipe (M) should
be finished with a partial
bend, near the outlet to face the external
wall (as shown) to help prevent freezing.
Use waterproof pipe insulation
in exposed
positions and for external pipework.
INSTALLATION & SERVICING INSTRUCTIONS
FOR WORCESTER BOSCH GREENSTAR 25CDI/30CDI/37CDI/42 co; ~ORCESTER
6 720 613 700a (2006/11)
Bosch Group

SERVICING CLEARANCES ~- -
Using 1 00 mm flue kit
-1112 mm
Using 125 mm flue kit
-1152 mm
'20mm
' to removable door
600mm
' front clearance
'
for service
+30mn
above elbow
'
200 mm '
5mm
~ORCESTER
Bosch Group
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDV30CDV37CDci42CD•
6 720 613 700a (2006/11)
BOILER LOCATION &
CLEARANCES
This boiler is only suitable for installing internally
within a
property at a suitable location onto a
fixed, rigid non-combustible surface at least the
same size as the boiler
and capable of support-
ing the boiler weight.
COMPARTMENTS:
Follow the requirements of BS6798 and
BS5440 Part 2 and note:
Minimum clearances must
be maintained
• An
access door is required to install, service
and maintain the boiler and any ancillary
equipment.
• If fitting the boiler into
an airing cupboard
use a non-combustible perforated material
(maximum hole sizes
of 13mm) to separate
the boiler from the airing space.
BOILER CLEARANCES:
The diagram opposite shows the m1n1mu
space required to install and service the boiler.
VENTILATION
This is a room sealed appliance and
does not
require any air for combustion from inside the
property. If the
appliance is fitted into a cup-
board or a compartment is built around the
appliance after installation, then the compart-
ment must be separated from the boiler space
by a perforated non-combustible partition as
described in BS 6798.
Notwithstanding the requirements of BS 6798
and BS 5440 there is no need for ventilation
openings to be provided in the compartment
because of the low heat loss from the appliance
casing, if the clearances
shown are maintained.
Do
not operate the appliance if the flue terminal
fitted on the outside wall
or roof is obstructed
or damaged.
BOILER LOCATION & CLEARANCES

BOILER LOCATION &
CLEARANCES
aoomm
BATHROOMS:
750mm
The boiler can be installed in zones 2 or 3. If a
mechanical or
RF mechanical timer or text dis-
® @
CD CD
play with room thermostat (IP 20 only) is fitted
the boiler can only be installed
in zone 3.
@ ® 2250mm A Non mechanical timer can be installed in
zone
2.
See lEE wiring regulations.
(See Technical Data for
IP ratings.}
IMPORTANT: any switch or appliance
control using 230 V mains electricity must
not be able to be touched by a person
using the bath or shower.
Electrical switches, fused
spur and socket
outlets must not be situated in the bath-
aoomm room.
750mm
For further information about bathroom installa-
lions please consult Operational Procedures
Part 20, Electricity.
@ ® 2250mm
600mm radius
6720611927-13.10
BOILER LOCATION & CLEARANCES INSTALLATION & SERVICING INSTRUCTIONS
FOR WORCESTER BOSCH GREENSTAR 25CDI/30CDI/37CDI/42 co; ~ORCESTER
6 720 613 700a (2006/11)
Bosch Group

•
CH Flow
(alternative
from above
appliance)
22
mm
CH flow
22
mm
c;J!:_ DHW Out (alternative from above appliance) 15 mm
lUGas Supply (alternative from above appliance) 22 mm
:~
c..~
~-
1
I
I
I
I
I
I
H
c:;J!:_ Mains Water In (alternative from above appliance) 15 mm
• CH Return (alternative from above appliance) 22 mm
DHW Out 15 mm
Mains Gas Supply 22 mm
• CH return 22 mm
Mains Water In 15 mm
~ORCESTER
Bosch Group
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDV30CDV37CDci42CDI
6
720 613 700a (2006/11)
PLUMBING MANIFOLD
CONNECTIONS:
Heating System: 22
mm compression fittings
DHW:
15 mm compression fittings
Gas: 22
mm compression fittings
Use the
fittings supplied in the Hardware
pack.
PREPLUMBING
With the plumbing manifold installed,
pipework can be installed to the valves on the
manifold.
The system can be filled (without the boiler
being
connected) using the charging link
assembly (see page 23).
The valves can be closed enabling the DHW
and CH systems to be tested. The boiler can
be installed at later date.
RUNNING PIPES
BEHIND THE BOILER
If the boiler pipes are to be
run behind the
appliance ensure that the pipes pass close to
the wall
as shown in the diagram opposite,
and within the pipe guide.
PLUMBING MANIFOLD

Minimum dimensions of flue terminal positions for balanced room sealed flues with
fanned draught:
DRWG. TERMINAL POSITION DISTANCE
REF:
A' Directly below an opening, air brick, opening windows, etc. 300mm
B' Above
an opening, air brick, opening window, etc. 300mm
C'
Horizontally to an opening, air brick, opening window, etc. 300mm
D Below gutters, soil pipes or drain pipes 75mm
E
Below eaves 200mm
F2
Below balconies or car port roof (lowest point) 200mm
G From a vertical drain pipe or soil pipe 150mm
H From
an internal or external corner 300mm
I Above ground, roof or balcony 300mm
J From a surface facing the terminal 600mm
K From a terminal facing the terminal 1200mm
L2
From an opening in the car port (e.g. door, window) into the dwelling 1200mm
M Vertically from a terminal on the same wall 1500mm
N Horizontally from a terminal on the same wall 300mm
0 From a non combustible vertical structure on the roof *
p Above intersection with roof *
0 Adjacent to
windows or openings on pitched and flat roofs 600mm
R Below windows or openings on pitched roofs 2000mm
In addition, the terminal should not be nearer than 150mm (fanned draught} to an opening
in the building fabric formed for the purpose of accommodating a built-in element such as a
window
frame.
2 Not recommended.
*
See instructions supplied with vertical flue kits.
FLUE TERMINAL POSITIONS
The flue must be fitted and terminated
in
accordance with the recommendations of
BS5440 : Part 1.
The flue must not cause an obstruction.
Discharge and any noise from the flue outlet
must not cause a nuisance.
Flue gases have a tendency
to plume and in
certain weather conditions a white plume of
condensation will be discharged from the
flue outlet.
Where this could be a nuisance,
for example, near security lighting,
an alter-
nate position should be found.
The air inlet/outlet
duct and the terminal of
the boiler must not be closer than 25mm to
any combustible material.
Detailed recommendations on protection
of
combustible materials are given in
BS 5440:1
• A protective terminal guard must be fitted if
the terminal is 2m or less above a surface to
which people have access.
The guard must be spaced equally (mini-
mum
50 mm) around the flue and fixed to
the wall with plated screws. See
Contact
Information (inside front cover).
FLUE TERMINAL POSITIONS INSTALLATION & SERVICING INSTRUCTIONS
FOR WORCESTER BOSCH GREENSTAR 25CDI/30CDI/37CDI/42 co; ~ORCESTER
6 720 613 700a (2006/11)
Bosch Group

STANDARD FLUE HORIZONTAL
0100
MAX 686 mm Ax 1
MIN 250
mm Ax 1*
0125
MAX 1070 mm Ax 1
MIN 250
mm Ax 1*
* Requires cutting
MAXIMUM FLUE HORIZONTAL
0100- 10000 mm
Ax1+Bx10
0125- 23000 mm
Ax 1 + B x 23
--------~
MAXIMUM FLUE VERTICAL START+ 1 BEND
0 c
0100- 10000 mm
Ax1+Cx1+Bx11
+ Fx 1
0125- 23000 mm
A X 1 + c X 1 + B X 23
+
Fx 1
MAXIMUM FLUE
HORIZONTAL+ 1 BEND
0 c
0100- 8000 mm
Ax1 + Bxg+Cx1
0125- 21000 mm
A X 1 + B X 21 + c X 1
MAXIMUM FLUE VERTICAL
START+ 2 BENDS
F
bi 0 '- ---, 1' lu:z?' A
B
L__ ___ ___..
co
0100-8000 mm
A X 1 + c X 2 + B X 10
+ Fx 1
0125- 21000 mm
A X 1 + c X 2 + B X 22
+ Fx 1
MAXIMUM FLUE VERTICAL
START+ 3 BENDS
F
B
c 0
0100-6000 mm
Ax1+Cx3
+Bxg+Fx1
0125- 1gooo mm
Ax1+Cx3
+ B X 21 + F X 1
MAXIMUM FLUE VERTICAL
WITH 2 X 45°
BENDS
E
B
D V
0100- g500 mm
(including terminal)
Bx10+Dx2+Ex1
0125- 21000 mm
(including terminal)
B X
21 + D X 2 + E X 1
VERTICAL FLUE WITH
2 X
goo BENDS
E
B
c 0
0100- 7500 mm
(including terminal)
Bxg+ Cx2 +Ex1
0125- 1gooo mm
(including terminal)
Bx20+ Cx2 +Ex1
6 720 611 927-08.1 0
~ORCESTER INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDV30CDV37CDc!42CD•
Bosch Group
6 720 613 700a (2006/11)
FLUE OPTIONS 25CDi
The diagrams (opposite) show the compo-
nents used and the
maximum flue length for
each configuration of 100
mm and
125
mm 0 flues.
• Shaded flue components indicate the stan-
dard 100
mm 0 horizontal flue.
• Only straight flue sections can be reduced
in length and cut.
•
The flue terminal end can be fitted from the
inside or outside of the building.
Fixing kits are supplied with the flue exten-
sion kits.
Horizontal125
mm 0 and Vertical100 mm
and 125 mm 0 flue kits are available with
separate instructions. Contact your supplier
or Worcester Bosch.
A c D
QH i
lb--l
0 v
B
ED
F
fd_
A- Standard horizontal flue (100 mm 0 shown)
B - Straight flue extension
C- Flue bend, goo
D - Flue bends, 45°
E - Vertical terminal (vertical adaptor supplied
with terminal)
F- Vertical adaptor (used with horizontal
terminal)
Calculating the flue length:
Measure the total flue length required, noting
that the maximum straight flue length including
the terminal is:
Horizontal 60/100
mm 0: 10000 mm
Horizontal80/125 mm 0: 23000 mm
Vertical60/100 mm 0: 11500 mm
Vertical 80/125 mm 0: 23000 mm
Then reduce the total straight flue length for
each extra flue bend (excluding the turret) by:
2000
mm for goo
1000 mm for 45°
Flue extension total lengths:
Horizontal & Vertical 60/100
mm 0: g5o mm
Horizontal & Vertical 80/125 mm 0: 1000 mm
Flue terminal total lengths:
Horizontal 60/100
mm 0: 800 mm
Horizontal80/125 mm 0: 1200 mm
Vertical60/100 mm 0: 1140 mm
Vertical 80/125 mm 0: 1365 mm
FLUE OPTIONS 25CDi

STANDARD FLUE HORIZONTAL
Q H I
PA
0100
MAX 686 mm Ax 1
MIN 250
mm Ax 1*
0125
MAX 1070 mm Ax 1
MIN 250
mm Ax 1*
* Requires cutting
MAXIMUM FLUE HORIZONTAL
0100- 7goo mm
Ax1+Bx8
0125- 18500 mm
A X 1 + B X 18
MAXIMUM FLUE VERTICAL START+ 1 BEND
0 c
0100- 7goo mm
Ax1+Cx1+Bxg
+ Fx 1
0125- 18500 mm
Ax1+Cx1+Bx1g
+ Fx 1
MAXIMUM FLUE
HORIZONTAL+ 1 BEND
bJ Oc_ _ _JL_ _uc iP A
B
0 c
0100- 5goo mm
Ax1 + Bx7+Cx1
0125- 16500 mm
Ax1 + Bx17+Cx1
FLUE OPTIONS 30CDi
I
_____ ,.,
MAXIMUM FLUE VERTICAL
START+ 2 BENDS
F
.bi d II iPA
B ~---~
co
0100- 5goo mm
Ax1+Cx2+ Bx8
+ Fx 1
0125- 16500 mm
A X 1 + c X 2 + B X 18
+ Fx 1
MAXIMUM FLUE VERTICAL
START+ 3 BENDS
F
B
c 0
0100- 3goo mm
Ax1+Cx3
+Bx7+Fx1
0125- 14500 mm
Ax1+Cx3
+Bx17+Fx1
MAXIMUM FLUE VERTICAL
WITH 2 X 45° BENDS
E
B B
D V
0100- 7400 mm
(including terminal)
Bx8+Dx2+Ex1
0125- 16500 mm
(including terminal)
Bx17+ Dx2 +Ex1
VERTICAL FLUE WITH
2 X
goo BENDS
E
B B
c 0
0100-5400 mm
(including terminal)
Bx7+ Cx2 +Ex1
0125- 14500 mm
(including terminal)
Bx16+ Cx2 +Ex1
6 720 611 927-08.1 0
FLUE OPTIONS 30CDi
The diagrams (opposite) show the compo-
nents used and the maximum flue length for
each configuration of 100
mm and
125
mm 0 flues.
• Shaded flue components indicate the stan-
dard 100
mm 0 horizontal flue.
Only straight flue sections can be reduced
in length and cut.
•
The flue terminal end can be fitted from the
inside or outside of the building.
Fixing kits are supplied with the flue exten-
sion kits.
Horizontal 125
mm 0 and Vertical 100 mm
and 125 mm 0 flue kits are available with
separate instructions. Contact your supplier
or Worcester Bosch.
A c D
_QH
IP 0 v
B
EB
F
Q
A - Standard horizontal flue
(1 00 mm 0 shown)
B - Straight flue extension
C -
Flue bend, goo
D - Flue bends, 45°
E - Vertical terminal (vertical adaptor supplied
with terminal)
F- Vertical adaptor (used with horizontal
terminal)
Calculating the flue length:
Measure the total flue length required, noting
that the
maximum straight flue length including
the terminal is:
Horizontal 60/100
mm 0: 7goo mm
Horizontal 80/125 mm 0: 18500 mm
Vertical 60/100 mm 0: g400 mm
Vertical 80/125 mm 0: 18500 mm
Then reduce the total straight flue length for
each extra flue bend (excluding the turret)
by:
2000 mm for goo
1000 mm for 45°
Flue extension total lengths:
Horizontal & Vertical 60/100
mm 0: g5o mm
Horizontal & Vertical 80/125 mm 0: 1000 mm
Flue terminal total lengths:
Horizontal 60/100
mm 0: 800 mm
Horizontal 80/125 mm 0: 1200 mm
Vertical 60/100 mm 0: 1140 mm
Vertical 80/125 mm 0: 1365 mm
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDI/30CDI/37CDI/42 co; ~ORCESTER
6 720 613 700a (2006/11)
Bosch Group

STANDARD FLUE HORIZONTAL
_g) o II i i9 A
0100
MAX 686 mm Ax 1
MIN 250
mm Ax 1*
0125
MAX 1070 mm Ax 1
MIN 250
mm Ax 1*
* Requires cutting
MAXIMUM FLUE HORIZONTAL
0100- 3000 mm
Ax1+Bx3
0125- 15000 mm
Ax1+Bx14
MAXIMUM FLUE VERTICAL START+ 1 BEND
0 c
0100-3000 mm
Ax1+Cx1+Bx4
+ Fx 1
0125- 15000 mm
A X 1 + c X 1 + B X 15
+ Fx 1
MAXIMUM FLUE
HORIZONTAL+ 1 BEND
_g) 0'-------"'--- M-iiY A
B
0 c
0100- 1000 mm
Ax1+Bx1+Cx1
0125- 13000 mm
A X 1 + B X 13 + c X 1
'
'"
MAXIMUM FLUE VERTICAL
START+ 2 BENDS
F
.!d. d I IP A
B ~---~
co
0100- 1000 mm
Ax1+Cx2+ Bx3
+ Fx 1
0125- 13000 mm
A X 1 + c X 2 + B X 14
+
Fx 1
MAXIMUM FLUE VERTICAL
START+ 3 BENDS
F
B
bJ. O:[===~= JiiL i u l i9 '
c 0
0100- N/A
0125- 11000 mm
Ax1+Cx3
+ B X 13 + F X 1
A
MAXIMUM FLUE VERTICAL
WITH 2 X 45° BENDS
E
B
D V
0100-4000 mm
(including terminal)
Bx4+Dx2+Ex1
0125- 14000 mm
(including terminal)
Bx14+ Dx2 +Ex1
VERTICAL FLUE WITH
2 X goo BENDS
E
B
c 0
0100- 2000 mm
(including terminal)
Bx3+ Cx2 +Ex1
0125- 12000 mm
(including terminal)
Bx13+ Cx2 +Ex1
6 720 611 927-08.1 0
~ORCESTER INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDV30CDV37CDc!42CD'
Bosch Group
6 720 613 700a (2006/11)
FLUE OPTIONS 37CDi
The diagrams (opposite) show the compo-
nents used and the maximum flue length for
each configuration of 100
mm and
125
mm 0 flues.
• Shaded flue components indicate the stan-
dard 100
mm 0 horizontal flue.
• Only straight flue sections can be reduced
in length and cut.
•
The flue terminal end can be fitted from the
inside or outside of the building.
Fixing kits
are supplied with the flue exten-
sion kits.
Horizontal125
mm 0 and Vertical100 mm
and 125 mm 0 flue kits are available with
separate instructions. Contact your supplier
or British Gas.
A c D
QH ll
:b--"
0 v
B
ED
F
Jd.
A - Standard horizontal flue
(1 00 mm 0 shown)
B - Straight flue extension
C -
Flue bend, goo
D - Flue bends, 45°
E - Vertical terminal (vertical adaptor supplied
with terminal)
F- Vertical adaptor (used with horizontal
terminal)
Calculating the flue length:
Measure the total flue length required, noting
that the maximum straight flue length including
the terminal is:
Horizontal 60/100
mm 0: 3000 mm
Horizontal 80/125 mm 0: 15000 mm
Vertical 60/100 mm 0: 6000 mm
Vertical 80/125 mm 0: 16000 mm
Then reduce the total straight flue length for
each extra flue bend (excluding the turret)
by:
2000 mm for goo
1000
mm for 45°
Flue extension total lengths:
Horizontal & Vertical 60/100
mm 0: g5o mm
Horizontal & Vertical 80/125 mm 0: 1000 mm
Flue terminal total lengths:
Horizontal 60/100
mm 0: 800 mm
Horizontal 80/125 mm 0: 1200 mm
Vertical60/100 mm 0: 1140 mm
Vertical 80/125 mm 0: 1365 mm
FLUE OPTIONS 37CDi

STANDARD FLUE HORIZONTAL
Q H I
PA
0100
MAX 686 mm Ax 1
MIN 250
mm Ax 1*
0125
MAX 1070 mm Ax 1
MIN 250
mm Ax 1*
* Requires cutting
MAXIMUM FLUE HORIZONTAL
0100- 2600 mm
Ax1+Bx2
0125-12500 mm
Ax1+Bx12
MAXIMUM FLUE VERTICAL START+ 1 BEND
0 c
0100- 2600 mm
Ax1+Cx1+Bx3
+ Fx 1
0125- 12500 mm
A X 1 + c X 1 + B X 13
+ Fx 1
MAXIMUM FLUE
HORIZONTAL+ 1 BEND
bJ Oc_ _ _JL_ _uc iP A
B
0 c
0100-600 mm
Ax1 + Bx1 +Cx1
0125- 10500 mm
Ax1 + Bx11 +Cx1
FLUE OPTIONS 42CDi
I
_____ ,.,
MAXIMUM FLUE VERTICAL
START+ 2 BENDS
F
.bi d II iPA
B ~---~
co
0100- N/A
0125- 10500 mm
A X 1 + c X 2 + B X 12
+ Fx 1
MAXIMUM FLUE VERTICAL
START+ 3 BENDS
F
B
c 0
0100- N/A
0125- 8500 mm
Ax1+Cx3
+Bx11 +Fx1
MAXIMUM FLUE VERTICAL
WITH 2 X 45° BENDS
E
B B
D V
0100- 2goo mm
(including terminal)
Bx3+Dx2+Ex1
0125- 14000 mm
(including terminal)
B X
14 + D X 2 +EX 1
VERTICAL FLUE WITH
2 X
goo BENDS
E
B B
c 0
0100- N/A
0125- 12000 mm
(including terminal)
Bx13+ Cx2 +Ex1
6 720 611 927-08.1 0
FLUE OPTIONS 42CDi
The diagrams (opposite) show the compo-
nents used and the maximum flue length for
each configuration of 100
mm and
125
mm 0 flues.
• Shaded flue components indicate the stan-
dard 100
mm 0 horizontal flue.
Only straight flue sections can be reduced
in length and cut.
•
The flue terminal end can be fitted from the
inside or outside of the building.
Fixing kits are supplied with the flue exten-
sion kits.
Horizontal 125
mm 0 and Vertical 100 mm
and 125 mm 0 flue kits are available with
separate instructions. Contact your supplier
or Worcester Bosch.
A c D
_QH
IP 0 v
B
EB
F
Q
A - Standard horizontal flue
(1 00 mm 0 shown)
B - Straight flue extension
C -
Flue bend, goo
D - Flue bends, 45°
E - Vertical terminal (vertical adaptor supplied
with terminal)
F- Vertical adaptor (used with horizontal
terminal)
Calculating the flue length:
Measure the total flue length required, noting
that the
maximum straight flue length including
the terminal is:
Horizontal 60/100
mm 0: 2600 mm
Horizontal 80/125 mm 0: 12500 mm
Vertical 60/100 mm 0: 4goo mm
Vertical 80/125 mm 0: 16000 mm
Then reduce the total straight flue length for
each extra flue bend (excluding the turret)
by:
2000 mm for goo
1000 mm for 45°
Flue extension total lengths:
Horizontal & Vertical 60/100
mm 0: g5o mm
Horizontal & Vertical 80/125 mm 0: 1000 mm
Flue terminal total lengths:
Horizontal 60/100
mm 0: 800 mm
Horizontal 80/125 mm 0: 1200 mm
Vertical 60/100 mm 0: 1140 mm
Vertical 80/125 mm 0: 1365 mm
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDI/30CDI/37CDI/42 co; ~ORCESTER
6 720 613 700a (2006/11)
Bosch Group