GREENSTAR DANESMOOR WALL MOUNTED
12/18 & 18/25
WALL MOUNTED OIL FIRED CONDENSING BOILER
CONVENTIONAL FLUE & ROOM SEALED FLUE
FOR FULLY PUMPED OPEN VENT OR SEALED CENTRAL HEATING SYSTEMS AND DOMESTIC
HOT WATER CYLINDERS
THE APPLIANCE IS FOR USE WITH KEROSENE (28 SECOND
OIL) ONLY
GB
INSTRUCTION MANUAL
INSTALLATION COMMISSIONING
& SERVICING
INSTALLATION & SERVICING INSTRUCTIONS
SYMBOLS USED IN THIS MANUAL:
PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATION.
THESE INSTRUCTIONS ARE APPLICABLE TO THE WORCESTER 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.
Domestic hot water
THE INSTRUCTIONS APPLY IN THE UK ONLY AND MUST BE FOLLOWED EXCEPT FOR ANY
STATUTORY OBLIGATION.
Central heating
THIS APPLIANCE MUST BE INSTALLED BY A COMPETENT PERSON. FAILURE TO INSTALL
CORRECTLY COULD LEAD TO PROSECUTION.
COMPLYING WITH THE BUILDING REGULATIONS:
This heating appliance forms part of the controlled services for the building. It is law that all controlled
services for buildings must comply with building regulations. You must be able to satisfy your Local
Authority Building Control Body (LABC) that the work carried out concerning the installation and
commissioning of this heating appliance has been carried out to a satisfactory standard.
Room thermostat
Frost thermostat
OFTEC operate a competent persons scheme and registered installers are able to certify that their
work complies with building regulations. Under the scheme;
OFTEC must be informed about every installation.
OFTEC will issue a building regulations compliance certificate to the householder and will
notify the LABC.
Wait time period
OFTEC provide controlled document forms CD10 and CD11 for use during installation and
commissioning respectively.
Programmer/timer OFF
Other organisations operate self-certification schemes e.g. NAPIT and BESCA Ltd. and it may be
possible for installers who are members of these organisations to self certify their work.
Alternatively you must submit a building control notice to the LABC before installing any boiler. The
LABC will then arrange regular inspection visits during the work to ensure that the installation
complies with the regulations.
Cold water main supply
IF YOU ARE IN ANY DOUBT CONTACT THE WORCESTER TECHNICAL HELPLINE.
DISTANCE LEARNING AND TRAINING COURSES ARE AVAILABLE FROM WORCESTER.
Electricity supply
PLEASE LEAVE THESE INSTRUCTIONS, THE COMPLETED COMMISSIONING FORM AND
THE USER MANUAL WITH THE OWNER OR WITH THE APPLIANCE AFTER INSTALLATION
OR SERVICING. THE SERVICE INTERVAL RECORD CAN BE FOUND ON THE BACK PAGE
OF THIS MANUAL.
ABBREVIATIONS USED IN THIS MANUAL:
Ø
Diameter
N/A
CH
Central Heating
SEDBUK
DHW
TRV
IP
CF
BF
Domestic Hot Water
Thermostatic Radiator Valve
Ingress Protection
Conventional flue
Balanced flue
OFTEC
IEE
LABC
Not allowed
Seasonal Efficiency of Domestic Boilers
in the United Kingdom
Oil Firing Technical Association for the
Petroleum Industry
Institute of Electrical Engineers
Local Authority Building Control Body
STORE THE APPLIANCE IN A DRY AREA PRIOR TO INSTALLATION.
IMPORTANT HANDLING INSTRUCTIONS:
It is advised that more than one person is
involved in the transfer of the packaged
appliance from the van to the point of installation.
It is advised that no attempt should be made to
move the packaged appliance without the use of
a suitable truck.
At all times the correct method for handling
heavy objects should be strictly observed.
GENERAL HANDLING GUIDELINES:
• Lift only a manageable weight, or ask for
help.
• When lifting, bend the knees, and keep the
back straight and feet apart.
• Do not lift and twist at the same time.
• Lift and carry items close to the body.
• Wear protective clothing and gloves to
protect from any sharp edges.
Check List
Item
Appliance....................................................................................................................................................................1
Accessories Box (below appliance) Contents:
Flue Adaptor Kit...................................................................................................................................................................1
Accessories Tray (top of appliance) Contents:
Base Panel............................................................................................................................................................................1
Condensate Pipe...............................................................................................................................................................1
Fixings Pack:
Wall bolts.........................................................................................................................................................................6
Burner Service Hook..................................................................................................................................................1
Cable Ties.......................................................................................................................................................................2
Oil Valve Fittings Pack................................................................................................................................................1
Fibre Washer Pack......................................................................................................................................................1
Casing Bolts..................................................................................................................................................................6
Literature Pack:
Greenstar Danesmoor Wall Mounted Installation/Servicing Instructions................................................1
Users Instructions...............................................................................................................................................................1
Warranty Return Envelope..............................................................................................................................................1
Guarantee Registration Card........................................................................................................................................1
1
INSTALLATION &
SERVICING INSTRUCTIONS
Qty
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
SAFETY &
REGULATIONS
CONTENTS
IMPORTANT INFORMATION AND SYMBOLS
1
SAFETY PRECAUTIONS AND INSTALLATION REGULATIONS
3
APPLIANCE
INFORMATION
SAFETY & REGULATIONS
APPLIANCE INFORMATION
GENERAL INFORMATION
4
TECHNICAL DATA
5
LAYOUT & COMPONENTS
6
CLEANING PRIMARY SYSTEMS
7
MAINS SUPPLY
8
10-11
CONDENSATE PIPEWORK
12
PRESSURE RELIEF PIPEWORK
13
BOILER LOCATION & CLEARANCES
PRE INSTALLATION
9
WATER SYSTEMS & PIPEWORK
14-15
FLUE TERMINAL POSITIONS
16
CONVENTIONAL FLUE
17
ROOM SEALED FLUE OPTIONS
18
INSTALLATION
OIL SUPPLY
INSTALLATION
PIPEWORK POSITIONS & FLUE OPENING
19-22
23
BOILER INSTALLATION
24
COMBUSTION CHAMBER
25
CONDENSATE TRAP
26
OIL BURNER & PUMP
COMMISSIONING
UNPACKING THE BOILER
27
REFITTING COMPONENTS
28-29
ELECTRICS
30-35
COMMISSIONING
FILLING THE SYSTEM
STARTING THE APPLIANCE
36
37
38-40
WATER TREATMENT
41
FINISHING COMMISSIONING - APPLIANCE
42
SERVICING
& SPARES
PRE-COMMISSIONING CHECKS - APPLIANCE
SERVICING & SPARES
BAFFLE ARRANGEMENT 12/18
43-45
46
BAFFLE ARRANGEMENT 18/25
47
INSPECTION AND SERVICE - CONCLUDED
48
SHORT PARTS LIST 12/18
49
SHORT PARTS LIST 18/25
50
FAULT FINDING
& DIAGRAMS
INSPECTION AND SERVICE
FAULT FINDING - BURNER FUNCTION
51
FAULT FINDING - HEATING & HOT WATER
52
FAULT FINDING - BOILER FUNCTION
53
DIAGNOSTICS FOR MO535 RDB CONTROL BOX
54
MO535 RDB CONTROL BOX OPERATION
55
COMBUSTION RECORD
56
SERVICE INTERVAL RECORD
57
NOTES
FAULT FINDING & DIAGNOSIS
2
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
CONTENTS
SAFETY &
REGULATIONS
SAFETY PRECAUTIONS
INSTALLATION REGULATIONS
OIL SMELLS, LEAKS OR FUMES FROM THE APPLIANCE:
Extinguish any naked flames.
The appliance should be installed by a competent
person. The person installing the appliance should
be aware of the Health and Safety at Work Act and
take appropriate action to ensure that the
regulations are adhered to. In order to give
optimum efficiency and trouble free operation the
appliance must be commissioned by a qualified
OFTEC engineer.
Open windows and doors.
Isolate the electrical supply.
Isolate the fuel supply to the boiler.
Rectify fault.
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). Where applicable, the CE mark indicates compliance with relative EU
Directives.
COMBUSTIBLE AND CORROSIVE MATERIALS:
Do not store or use any combustible materials (paper, thinners, paints etc.) inside or within the
vicinity of the appliance.
The combustion air must be kept clear of chemically aggressive substances which 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 these instructions and the relevant Installation Regulations.
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 regularly serviced by a competent, qualified engineer (such
as OFTEC registered personnel) using approved spares, to help maintain the economy, safety
and reliability of the appliance.
Failure to install appliances correctly could lead to
prosecution.
The compliance with a British Standard does not,
in itself, confer immunity from legal obligations. In
particular the installation of this appliance must be
in accordance with the relevant requirements of the
following British Standards and regulations in
respect of the safe installation of equipment:
BS 5410: part 1: Code of practice for Oil Fired
Boilers.
BS 799: part 5: Specification for Oil Storage
Tanks.
BS 7593: Code of Practice for treatment of water
in domestic hot water central heating systems.
BS 5449: part 1: Specification for forced
circulation hot water central heating for domestic
premises.
BS 5955: part 8: Specification for the installation
of thermoplastic pipes and associated fittings for
use in domestic hot and cold water services and
heating systems.
BS 7291: Thermoplastic pipes and associated
fittings for hot and cold water for domestic
purposes and heating installations in buildings.
BS 7074: part 1: Application, selection and
installation of expansion vessels and ancillary
equipment for sealed water systems.
BS 7671: IEE Wiring Regulations, current edition.
BS 1362: Specification for general purpose fuse
links for domestic and similar purposes.
The Building Regulations Part J and L1 England
and Wales; Part F and Part J Section III Scotland;
Part L and Part F Northern Ireland.
Local water company bye-laws.
The Control of Pollution (Oil) Regulations.
OFTEC Standards.
Where no specific instruction is given, reference
should be made to the relevant codes of practice.
3
SAFETY PRECAUTIONS
& INSTALLATION REGULATIONS
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
GENERAL INFORMATION
STANDARD PACKAGE:
30mm
380mm
410mm
A - Wall mounted oil fired condensing boiler.
B - Accessories tray.
C - Flue adaptor
600mm
APPLIANCE
INFORMATION
A
880mm
B
C
Check List
Item
Qty
Appliance....................................................................................................................................................................1
Accessories Box (below appliance) Contents:
Flue Adaptor Kit...................................................................................................................................................................1
Accessories Tray (top of appliance) Contents:
Base Panel............................................................................................................................................................................1
Condensate Pipe...............................................................................................................................................................1
Fixings Pack:
Wall bolts.........................................................................................................................................................................6
Burner Service Hook..................................................................................................................................................1
Cable Ties.......................................................................................................................................................................2
Oil Valve Fittings Pack.............................................................................................................................................. 1
Fibre Washer Pack......................................................................................................................................................1
Casing Bolts..................................................................................................................................................................6
Literature Pack:
Greenstar Danesmoor Wall Mounted Installation/Servicing Instructions................................................1
Users Instructions...............................................................................................................................................................1
Warranty Return Envelope..............................................................................................................................................1
Guarantee Registration Card........................................................................................................................................1
4
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
GENERAL INFORMATION
TECHNICAL DATA
DESCRIPTION
UNITS
12/18
18/25
litres
23
23
Maximum static head
metres
30
30
Minimum static head
metres
1
1
mbar
30
69
2.5
2.5
kg/hr
29
40
Fuel line (compression)
mm
10
10
Flow
mm
22
22
Return
mm
22
22
Central Heating
APPLIANCE
INFORMATION
Primary water capacity (total)
Water side resistance (20°C difference)
Max. permissible sealed system operating pressure
in accordance with WRAS guidelines
bar
Flue
Exit flue gas mass flow
Pipework connections
Primary drain
12mm hose connection
Condensate (polypropylene)
mm
21.5
21.5
AC...V
230
230
Frequency
Hz
50
50
Max. power consumption
W
150
160
Boiler flow temperature range (cut in/cut out)
°C
55/81
55/81
Control thermostat differential
°C
5
5
Boiler high limit thermostat set point
°C
95
95
Boiler manual reset overheat thermostat set point
°C
105
105
Flue manual reset overheat thermostat set point
°C
110
110
SEDBUK (Band A)
%
92.6
92.8
Appliance protection rating (with fascia programmer)
IP
20
20
Appliance protection rating (with programmer blanking plate)
IP
20
20
Appliance weight (dry)
kg
108.5
108.5
Lift weight
kg
72
72
class
1
1
mg/kWhr
160
160
Electrical
Electrical power supply voltage
Thermostats
General Data
Emissions class for NOx and CO
Typical NOx emission figures
5
TECHNICAL DATA
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
LAYOUT & COMPONENTS
The diagram opposite excludes the front
casing panel, bottom panel and air hose.
4.1
4.2
1
2
4
3
5
6
7
39
8
9
38
10
11
12
13
37
36
14
15
16
17
18
19
20
21
22
35
34
33
23
24
32
25
26
BAFFLE RETAINER ACCESS DOOR
SECONDARY HEAT EXCHANGER
BLEED POINTS
3. SECONDARY HEAT EXCHANGER
4. FLUE ADAPTOR
4.1 FLUE GAS SAMPLING POINT
4. 2 COMBUSTION AIR SAMPLE POINT
5.
AIR INLET CASING (FLEXIBLE AIR
DUCT CONNECTING TO AIR INTAKE
ON BURNER (18)
6.
FLUE OVERHEAT THERMOSTAT
PHIAL
7.
WALL MOUNTING FRAME
8. FLUE MANIFOLD ACCESS COVER
9. CONTROL AND MANUAL RESET
OVERHEAT THERMOSTAT PHIAL
10. AUTO-RESET HIGH LIMIT
11. HEAT EXCHANGER PIPE
12. CONDENSATE OUTLET
13. SECONDARY HEAT EXCHANGER
DRAIN POINT
14. RETURN PIPE
15. FLOW PIPE
16. CONDENSATE TRAP
17. DRIP TRAY
18. BURNER AIR INTAKE (CONNECTED
BY FLEXIBLE DUCT TO AIR INLET
CASING (6)
19. RIELLO RDB BURNER
20. LOCKOUT RESET BUTTON/INDICATOR
(ON FRONT OF BURNER CONTROL
BOX)
21. BURNER AIR SETTING ADJUSTER
22. BURNER CONTROL BOX
23. BURNER MOTOR
24. BURNER OIL PUMP
25. OIL SUPPLY ISOLATING VALVE
(UNDER HEAT EXCHANGER)
26. CONTROL BOX ASSEMBLY
27. BOILER OVERHEAT RESET BUTTON
28. FLUE OVERHEAT RESET BUTTON
29. OPTIONAL FASCIA MOUNTED
PROGRAMMER POSITION
30. POWER INDICATOR
31. TEMPERATURE CONTROL KNOB
32. LOCKOUT RESET BUTTON
33. LOCKOUT INDICATOR
34. POWER SWITCH
35. PRIMARY HEAT EXCHANGER DRAIN
(LOCATED UNDER HEAT EXCHANGER)
35. PRIMARY HEAT EXCHANGER
37. BURNER SERVICE SUPPORT
38. PRIMARY HEAT EXCHANGER BLEED
POINT
39. BOILER LIFTING HANDLE
APPLIANCE
INFORMATION
1.
2.
27
28
29
30
31
6
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
LAYOUT &
COMPONENTS
CLEANING PRIMARY SYSTEMS
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.
IMPORTANT: Debris from the system can
damage the boiler and reduce efficiency.
Failure to comply with the guidelines for
t he use of wat er treatment with the
appliance will invalidate the appliance
warranty.
BEFORE CLEANING THE SYSTEM:
ENSURE THE SYSTEM AND PIPEWORK IS
IN GOOD WORKING ORDER.
PRE INSTALLATION
FLUSH THE EXISTING SYSTEM WITH A
POWER FLUSHING MACHINE OR WITH A
CHEMICAL CLEANER BEFORE
INSTALLING NEW COMPONENTS.
CLEANING THE PRIMARY SYSTEM:
Cleanse the system in accordance with
BS 7593.
Fill the system with cold mains water to the
recommended pressure and check for leaks.
Open all drain cocks and drain the system.
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.
Run the boiler and system at normal operating
temperature in accordance with the
manufacturer's instructions.
Drain and thoroughly flush the system to
remove the flushing agent and any debris.
7
CLEANING
PRIMARY SYSTEMS
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
MAINS SUPPLY
ELECTRIC SUPPLY:
• Supply: 230V - 50Hz.
• Cable: PVC insulated 0.75mm2 (24 x
0.2mm) temperature rated to 90°C.
• Protection IP20.
• External 5A fuse to BS1362.
• The appliance must be earthed.
• Please refer to IEE regulations for cross
bonding requirements.
• Wiring between the appliance and the
electrical supply must comply with IEE wiring
regulations and any local regulations which
may apply for fixed wiring to a stationary
appliance.
• Any system connected to the boiler must not
have a separate electrical supply.
PRE INSTALLATION
• It must be possible to isolate the appliance
from the electric supply with at least a 3mm
contact separation in both poles supplying
the appliance.
8
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
MAINS SUPPLY
A
B
C
D
E
F
G
H
J
K
L
M
N
- Oil storage tank.
- Isolating valve.
- Oil strainer & water seperator.
- Fire valve to BS 5410.
- External wall.
- Fire valve sensor.
- Oil burner.
OIL SUPPLY
- Oil supply pipe.
- Oil pump.
- Full base (plastic tanks).
- Non-return valve.
- De-aerator.
- Oil filter (16µm max filtration size)
OIL SUPPLY :
• This appliance is suitable for kerosene (28
second oil) only, no other fuel must be used.
• Plastic or steel tanks should be installed to
BS 5410. A steel tank should conform to
BS 799: part 5 and have a slope of 1 in 24
away from the outlet valve with a sludge cock
at its lower end.
• Do not use galvanised steel tanks or
pipework for the oil supply system.
• Do not use soldered joints on the oil
supply pipework.
NOTE: All dimensions are in metres unless stated otherwise.
The maximum pipe run figures are based on using copper pipe with an inside diameter of
2mm less than the Ø.
E
F
BD
BN G
B C
H
J
MAXIMUM PIPE RUN FOR SINGLE PIPE GRAVITY FEED SYSTEM
HEAD 10mmØ
12mmØ
HEAD 10mmØ
12mmØ
0.5
12
30
2.5
62
100
1.0
25
69
3.0
74
100
1.5
37
91
3.5
87
100
2.0
49
100
4.0
99
100
c) Single pipe suction lift with de-aerator
Maximum suction height 3.5 metres. The oil
tank (A) must be positioned below the oil pump
(J). Create an inlet and return loop between the
de-aerator (M) and oil pump (J).
A non-return valve must be incorporated within
the de-aerator or fitted to the oil line between
the oil storage tank (A) and the de-aerator (M).
F G
b)
B
D
L
A
B C
L
150mm
B
H
K
N
J
E
10mmØ
50
44
38
32
12mmØ
100
100
95
80
HEAD
2.0
2.5
3.0
3.5
10mmØ
26
20
14
8
12mmØ
66
50
37
22
Lay the oil supply pipe (H) as straight and
level as possible to avoid air pockets and
unnecessary friction losses. Route away
from the boiler access door or other hot
surfaces.
F
G
Install a manual isolating valve (B) to the oil
supply pipe (H), as close to the oil storage
tank (A) as possible.
M
A
H
K
B
J
D
3.5m max .
c)
B C
A top feed oil tank fitted with a de-aerator
using an internal non-return valve should have
any non-return valves fitted in the base of the
tank to the suction line removed to assist
purging air from the oil line.
Pipework
Use copper pipe of the correct diameter
according to the information shown opposite.
Use flexible hoses to connect to the oil pump (J).
MAXIMUM PIPE RUN FOR DOUBLE PIPE SUB-GRAVITY FEED SYSTEM
HEAD
0
0.5
1.0
1.5
a) Single pipe gravity feed system:
The oil storage tank (A) must be positioned so
that the oil level does not exceed 4 metres above
the level of the burner oil pump (J) and in addition the oil level must be at least 300mm above
the oil pump (J). Where the maximum oil level in
the oil storage tank exceeds 4 metres, a head
breaking device must be installed between the
tank (A) and the burner oil pump (J).
b) Double pipe sub-gravity feed system:
Maximum suction height 3.5 metres. Non-return
valves must be fitted to the inlet and return oil line
between the oil pump (J) and oil storage tank (A).
3.5m max.
PRE INSTALLATION
K
4m max.
A
300mm
min.
a)
Fit an oil strainer and water seperator (C) to
the oil supply pipe, near the oil storage tank.
Fit an additional oil filter (N, 16µm max
filtration size) close to the boiler, but not
inside the boiler casing.
Fit a fire valve in accordance with BS 5410.
The fire valve (D) should be fitted externally
MAXIMUM PIPE RUN FOR SINGLE PIPE SUCTION LIFT WITH DE-AERATOR
to the building with the fire valve sensor (F)
located within the appliance case.
FUEL FLOW RATE
FUEL FLOW RATE
A fire valve with a shut off temperature of
HEAD 2.5kg/h 5kg/h 10kg/h 10kg/h
HEAD 2.5kg/h 5kg/h 10kg/h 10kg/h
85°C or higher is recommended to avoid
8mmØ 8mmØ 8mmØ 10mmØ
8mmØ 8mmØ 8mmØ 10mmØ
the possibility of nuisance shut offs.
2.0
60
30
14
65
0
100
55
26
100
2.5
45
25
11
50
0.5
95
45
23
100
A capillary type valve provides a neat and
3.0
35
15
8
35
1.0
80
40
20
90
simple installation. Alternatively, a fusible
3.5
25
10
5
20
1.5
70
35
17
75
link or electrical system may be used.
E
The table and illustration above is a guide only and does not in any way override the deaerator manufacturers instructions.
Under no circumstances should a
combination isolating/fire valve be used
as the sole fire protection device.
9
OIL SUPPLY
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
WATER SYSTEMS & PIPEWORK
IMPORTANT: The boiler should not be
allowed t o operat e wit h a ret urn
temperature of less than 40°C when the
system is up to operating temperature.
TYPICAL OPEN VENT SYSTEM:
PRIMARY SYSTEM PLASTIC PIPEWORK:
• Any plastic pipework used must have a
polymeric barrier, comply with BS 7921and
be installed to BS 5955 with 1000mm
(minimum) length of copper or steel pipe
connected to the boiler.
E
S
1000mm min.
F
H
• Plastic pipework used for underfloor heating
must be correctly controlled with a
thermostatic blending valve limiting the
temperature of the circuits to approx. 50°C
with 1000mm (minimum) length of copper or
steel pipe connected to the boiler.
M
R
T
R
L
T
L
PRIMARY SYSTEM/CONNECTIONS/VALVES:
A
R
R
K
L
L
T
L
C
K
J
D
D
A - Appliance.
G - Pressure gauge.
B - Expansion vessel.
H - Open vent 22mmØ min.
P - Pressure relief
discharge.
C - Automatic bypass valve.
J - Circulating pump.
R - Radiators.
D - Drain cock.
K - Zone valve.
S - Static head.
E - Feed and expansion cistern.
L - Lockshield valve.
F - Feed and expansion
15mmØ min.
M - Hot water cylinder.
N - Automatic air vent.
T - Thermostatic radiator
valve (TRV).
• Drain cocks are required at all the lowest
points on the system.
• Air vents are required at all high points on the
system.
U - To filling system.
OPEN VENT PRIMARY SYSTEM:
• The open vent pipe (H) and feed and
expansion pipe (F) must rise continuously
from the appliance.
• The feed and expansion cistern (E) must be
positioned to provide a static head (S) of at
least 1 metre above the highest point in the
heating system to the water level in the feed
and expansion cistern (E). If the appliance is
the highest point of the system 1 metre should
be above the highest point of the appliance.
• Ensure adequate space is left in the expansion
cistern for expansion of the system water.
• No valve shall be fitted in the open vent pipe
(H) or the feed and expansion pipe (F).
• The open vent pipe (H) must be at least
22mmØ.
TYPICAL SEALED SYSTEM:
N
M
R
T
R
L
T
L
P
A
R
R
B
L
G
L
T
L
U
C
J
K
D
• Do not use galvanised pipes or radiators.
• All system connections, taps and mixing
valves must be capable of sustaining a
pressure of 3 bar.
• Radiator valves should conform to
BS 2767:10.
• All other valves should conform to BS 1010.
• On new installations TRVs must be used on
all radiators except the radiator where the
room thermostat is sited, this must be fitted
with lockshield valves and left open. All
installations should have TRVs fitted to
radiators within the sleeping accommodation.
• An automatic bypass valve must be connected
between the heating flow and return where
TRVs are used on all radiators, fitted to give
at least a 3 metre circuit when activated.
PRE INSTALLATION
150mm max.
D
FULLY PUMPED SEALED PRIMARY SYSTEM:
• A pressure relief valve (P), spring loaded
safety valve set to operate at 3bar, must be
fitted to the heating flow pipe as close as
possible to the boiler.
• An expansion vessel (B) must be fitted to the
heating return pipe as close as possible to
the boiler and pressurised for the system
volume according to the instructions supplied
with the vessel.
• A pressure gauge (G), 3 bar minimum, must
be fitted to the heating flow pipe.
• An automatic air vent (N) must be fitted.
10
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
WATER SYSTEMS &
PIPEWORK
WATER SYSTEMS & PIPEWORK
Water main
supply
Heating return
Hose
return
Non return Non return
valve
valve
Stop
cock
Temporary hose
Auto air
vent
• Filling the system must comply with one of
the methods shown opposite.
• The filling point must be at low level and must
never be a permanent direct fixing to the
mains water supply.
• Filling loops must be WRAS approved.
Make up
vessel
Non return
valve
1000mm above
the highest point
of the system
Stop
cock
Fill Point
COMMISSIONING
INSTALLATION
PRE INSTALLATION
Heating return
Test cock
Stop
cock
FILLING PRIMARY SEALED SYSTEMS:
11
WATER SYSTEMS &
PIPEWORK
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
CONDENSATE PIPEWORK
CONDENSATE PIPEWORK:
a - Internal waste drainage system
• The condensate pipe must be a minimum of
21.5mmØ polypropylene pipe.
C
B
• All national and, where appropriate, local
regulations for the discharge and neutralisation
of condensate should be followed.
A
D
75mm
min.
Routing the pipework:
Wherever possible, the condensate
pipework should be routed internally to
prevent freezing.
• The condensate pipework must fall at least
50mm per metre towards the outlet.
• Take the shortest practicable route.
• Support the pipe at least every 0.5m for near
horizontal sections and 1m for vertical sections.
c - External drainage system
C
E
When a boiler is to be installed in an unheated
location, such as a garage, all condensate
drainage pipes should be considered as external.
C
A
External pipework:
450 min.
A
D
Invert
• Do not exceed 3 metres outside the dwelling.
• Terminate as close to the ground or drain as
possible(below the grating and above the
water level) while still allowing for safe
dispersal of the condesate. This helps to
reduce wind blowing up the pipe and freezing.
d - External condensate absorption point
Unsuitable for clay soil types
C
• The pipework length should be kept to a
minimum and the route as vertical as possible.
PRE INSTALLATION
b - Soil/vent stack
Connection of a condensate drainage pipe to a
drain may be subject to local building controls.
500mm min.
F
A
• Pipework subject to extreme cold or wind chill
conditions should be 32mm Ø pipe.
25mm
min.
G
• Protect ALL external pipework with weather
resistant insulation and box-in, if necessary,
to reduce the risk of freezing.
Making it safe:
I
H
200mm min.
400mm
min.
• Condensate pipework must not leak, freeze or
block up.
• Condensate traps must be filled before firing
up the boiler to prevent the possibility of
potetially harmful flue products evacuating via
the condensate route.
• Do not dispose of condensate into a water
recovery system where it is retained for reuse.
Condensate can be discharged into a rainwater
hopper which is part of a sewer system carrying
both rainwater and foul water.
• The pipework must follow one of the options
shown opposite:
A - Condensate from the boiler condensate
trap (supplied) which has a 75mm
minimum water seal.
B - Sink.
C - 21.5mm Ø polypropylene condensate pipe.
D - Gully.
E - Internal soil and vent stack.
F - 300mm x 100mm Ø sealed plastic tube.
G - Ground level.
H - Drainage holes 50mm from base of tube
(12mm Ø at 25mm centres) facing away
from building.
I-
Limestone chippings.
12
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
CONDENSATE PIPEWORK
PRESSURE RELIEF PIPEWORK
A
PRE INSTALLATION
B
A
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 outlet
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 (A) should be
at least 15mm diameter copper pipe and run
downwards away from the boiler and discharge
away from any electrics or other hazard,
preferably to an external drain or soakaway.
• Pipe (A) should be finished with a partial
bend, near the outlet to face the external wall
(as shown) to help prevent freezing.
A-
Drain pipe.
B-
Outside wall.
13
PRESSURE RELIEF PIPEWORK
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
BOILER LOCATION &
CLEARANCES
620mm
1010mm
• This boiler is only suitable for installing
internally within a property at a suitable
location onto a fixed rigid vertical non
combustable surface of the same size as the
boiler and capable of supporting the boiler
weight.
• The boiler is not suitable for external
installation unless a suitable enclosure is
provided.
300mm
• Roof space installations must fully conform to
BS 5410 part 1 section 4.6.9.
10mm
10mm
20mm
to removable door
• To provide sufficient air a suitable inlet must
be provided into the room or space in which
the boiler is situated.
600mm
front clearance
for service
1380mm
• In order to ensure clean and efficient
combustion an adequate supply of air must
be delivered to the combustion chamber.
CF minimum air inlet sizes*
Output
12/18
18/25
Size cm2
99
138
PRE INSTALLATION
Open flue model (CF):
An air brick or other form of continuous air
supply may have to be built into the installation
in order to ensure an adequate supply of air.
200mm
430mm
• If the appliance is to be installed in a confined
space or compartment two air vents will be
required, one at high level and one at low
level.
• The minimum area of each vent is given in the
chart opposite and the size depends on
whether the air is taken from another room or
outside the building.
MINIMUM AIR VENT AREA (cm2) FOR APPLIANCES
INSTALLED IN A COMPARTMENT:
1Internal air to and from a space/room inside the building.
2External air to and from directly outside the building.
Conventional flue:*
Internal1ventilation
High
Model Level
12/18 198
Low
Level
297
18/25
413
275
Room Sealed flue:*
Internal1ventilation
High
Model Level
12/18 198
Low
Level
198
18/25
275
275
External 2 ventilation
High
Low
Level Level
99
198
138
275
External 2 ventilation
High
Low
Level Level
99
99
138
138
• Where air is taken from another room that
room must contain an air inlet as described
above.
Room sealed balanced flue option (RS):
• This option does not require a seperate vent
for combustion air.
• Installations in cupboards or compartments
require permanent vents for cooling purposes,
one at high level and one at low level, either
to outside air or to a room. Both vents must
pass to the same room or be on the same
wall to the outside air.
• The minimum air vent free area is given in the
chart opposite and the size depends on
whether the air is taken from another room or
outside the building.
Clearances:
• The diagram shows the minimum clearances
required around the boiler for servicing.
• At least 1300mm will be required in front of
the wall to install the boiler.
* Due to changes in BS 5410 and modern
building design, these figures no longer
incorporate the adventitious ventilation
allowance.
14
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
BOILER LOCATION &
CLEARANCES
BOILER LOCATION &
CLEARANCES
COMPARTMENTS:
Follow the requirements of BS 5410 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 material (if perforated,
maximum hole sizes of 13mm) to separate
the boiler from the airing space.
Venting compartments:
PRE INSTALLATION
There must be sufficient clearance around the
appliance to allow proper circulation of
ventilation air. The clearances required for
installation and servicing will normally be
adequate for ventilation.
600mm
•
Ventilation must be provided for boilers
fitted into compartments as described in
BS 5410.
•
Combustion air must not be taken from a
room or internal space containing a bath or
shower and must not communicate with a
protected area such as a hall, stairway,
landing, corridor, lobby, shaft etc.
•
Air vents must allow access for clean free
air and must be sited to comply with the flue
terminal position requirements.
•
Air ducting runs must not exceed 3m.
•
Low level air vents must be less than
450mm from the floor.
•
A warning label must be added to the vents
with a statement to the effect: ''Do not block
this vent. Do not use for storage.”
600mm
750mm
2
3
1
2
1
3
2250mm
0
SHOWER / BATHROOMS:
The boiler must not be installed in zones 0, 1
or 2 (the shaded areas shown on the diagrams opposite).
A
IMPORTANT: conventional flued boilers must
not be fitted in a bathroom.
600mm
750mm
3
2
1
1
2
3
2250mm
0
I M PORTANT: any appliance control using
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 fitted in the bathroom.
In all cases the IEE wiring regulations must be
consulted.
Please refer to IEE regulations for cross bonding
requirements.
A
600mm radius
A - Bath or shower cubicle (zone 0)
15
FBOILER LOCATION &
CLEARANCES
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
Minimum dimensions of flue terminal positions for oil fired appliances:
FLUE TERMINAL POSITIONS
TERMINAL POSITION
CF
RS(H) RS(V)
A1 2
Directly below an opening, air brick, opening window, etc
N/A
600mm
N/A
12
B
Horizontally to an opening, air brick, opening window, etc
N/A
600mm
N/A
C
Below a plastic/painted gutter, drainage pipe or eaves if
combustible material protected
N/A
75mm
N/A
D3
Below a plastic/painted gutter, drainage pipe or eaves without
protection to combustible material
N/A
600mm
N/A
E
From vertical sanitary pipework
N/A
300mm
N/A
F
From an external or internal corner or from a surface or boundry
alongside the terminal
N/A
300mm
N/A
G
Above ground or balcony level
N/A
300mm*
N/A
H
From a surface or boundary facing the terminal
N/A
600mm** N/A
J
From a terminal facing the terminal
K
Vertically from a terminal on the same wall
L
Horizontally from a terminal on the same wall
M
1200**mm
• The flue must not cause an obstruction.
• Discharge from the flue outlet must not be 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 which could be regarded as a
nuisance, for example, near security lighting.
• There should be no restriction preventing the
clearance of combustion products from the
terminal.
—
N/A
1500mm
N/A
—
750mm
—
Above the point of highest intersection with the roof
600mm
—
600mm
N
From a vertical structure on the side of the terminal
750mm
—
750mm
O
Above a vertical structure less than 750mm from the side of the terminal 600mm
—
600mm
P
From a ridge terminal to a vertical structure on the roof
1500mm
—
N/A
Q
Above or to the side of any opening on a flat or sloping roof
300mm
—
300mm
R
Below any opening on a sloping roof
1000mm
—
1000mm
Key: — Not applicable, N/A Not allowed, CF Conventional flue, RS(H) Room Sealed Horizontal flue, RS(V) Room Sealed Vertical
flue.
Notes:
1. Terminals should be positioned so as to avoid products of combustion accumulating in stagnant pockets around the building or
entering into buildings.
2. Vertical structure in N, O and P includes tank or lift rooms, parapets, dormers etc.
3. Terminating positions should be at least 1.8m from an oil storage tank unless a wall with at least 30 min fire resistance and
extending 300mm higher and wider than the tank is provided between the tank and the terminating position.
4. Where a flue is terminated less than 600mm away from a projection above it and the projection consists of plastics or has a
combustible or painted surface, then a heat shield of at least 750mm wide should be fitted.
5. If the lowest part of the terminal is less than 2m above the ground, balcony, flat roof or other place to which any person has
access, the terminal should be protected by a guard.
6. Notwithstanding the dimensions given above, a terminal should not be sited closer than 300mm to combustible material. In the
case of a thatched roof, double this separation distance should be provided. It is also advisable to treat the thatch with a fire
retardant material and close wire in the vicinity of the flue.
7. It is essential that a flue or chimney does not pass through the roof within the shaded area delineated by dimensions Q and R.
8. Where protection is provided for plastic components, such as guttering, it is essential that this is to the standard specified by the
manufacturer of the plastic components.
• 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 5410:1
PRE INSTALLATION
—
• The flue must be fitted and terminated in
accordance with the recommendations of
BS5410.
• Flue terminals must be positioned to avoid
combustion products entering into buildings.
• A protective stainless steel terminal guard,
Part No: 7 716 190 050, must be fitted if
the terminal is 2m or less above a surface
where people have access.
• The following additional guidelines (from part
L Exceptions Guidance Document) are
recommended when determining the flue
outlet position:
• Avoid discharging flue gases into car ports
or narrow passageways.
• *Minimum distance of the flue terminal from
above ground is 2100mm where directed to a
public footpath, private access route or a
frequently used area and 2500mm from a
car parking area.
• **Minimum distance of the flue terminal to a
facing wall, fence, building or property
boundary is 2500mm.
P
Q
O
Q
Q
Q
Q
Q
Q
M
boundary
R
F
Pitched roof
C, D
J
A
H
Flat roof
N
B
F
E
K
F
G
L
boundary
16
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
FLUE TERMINAL
POSITIONS
CONVENTIONAL FLUE
• Open (conventional) flued appliances must
not be installed in a bedroom, bathroom or
bedsitting room.
• The flue system must be in accordance with
BS 5410 : Part 1 and the current Building
Regulations.
• The flue must be constructed of materials
suitable for use with condensing combustion
products.
D
E
• External flue systems must be of the insulated
type.
PRE INSTALLATION
• Brick and masonry chimneys must be lined
with a suitable non-combustible material and
properly jointed to withstand the effects of
the working temperature (minimum rating of
material 120°C) of the appliance and any
condensate which may form.
• All flue joints must be sealed to prevent the
leakage of condensate and combustion
products.
• Ensure that joints are made so that the
condensate runs away and is not collected
within the joint.
NOTE: The flue can be increased in size from
the boiler take off point providing the joint is
correctly sealed. Never reduce the flue diameter
from the boiler take off point.
CF Sizing:
• 12/18 and 18/25 = 100/103mmØ
C
• Because the flue operates at a lower
temperature on a condensing boiler
compaired to that of a conventional
appliance, the flue draught will be lower.
Typically the draught will be between
0.5mmwg and 4.4mmwg, measured with the
flue warm but the burner not firing. The actual
figure will vary depending on weather
conditions, flue height and position.
B
• The flue should be vertical and contain as few
bends as possible, a maximum of two 135°
bends should be used.
A
• The flue outlet must be extended beyond the
eaves of the building and where possible,
above the apex.
• Fit a suitable anti down-draught terminal
where down draughts are experienced.
• This appliance is suitable for the Worcester
‘Oilfit’ conventional flexible flue liner.
A - Boiler
B - Flue
C - Max. 2 bends at 135°
D - Anti down-draught terminal
E - Chimney
17
CONVENTIONAL FLUE
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
ROOM SEALED FLUE OPTIONS
The diagrams (opposite) show the components
used and the maximum flue length (L) for
each flue configuration.
L = 4000mm
L
A
B
In all cases L is measured from the outside of
the boiler casing.
X4
C
• To achieve the maximum flue length (L), a flue
section will have to be reduced in length.
L
• Only the flue terminal or straight flue
extensions can be reduced in length by
cutting.
L = 6000mm
E
B
• The horizontal flue terminal end can be fitted
from the inside or outside of the building.
X6
A
L = 4000mm
C
D
L
A
X4
B
B
E
PRE INSTALLATION
IMPORTANT:
All horizontal sections must rise away from
the boiler by 52mm per metre (3°) to allow
the condensate to drain back to the boiler.
C
L = 5000mm
L
E
B
X4
A - Horizontal terminal
B - Straight flue extension
C - Flue bend 90°
D - Flue bend 45° X 2
E - Vertical terminal
Calculating the flue length:
Measure the total flue length required, noting
that the maximum straight flue length including
the terminal is:
Horizontal 80/125mm Ø: 4000mm (excluding
120mm of terminal extending outside the building)
Vertical 80/125mm Ø: 6000mm.
L = 3000mm
L
A
X4
B
C
Then reduce the total straight flue length for
each extra flue bend (excluding the vertical flue
kit 90° elbow) by:
X2
1000mm for 90°
500mm for 45°
Flue Extension lengths:
L = 4000mm
E
B
X3
X2
L
Horizontal & Vertical 80/125mm Ø: 1000mm
overall length.
Effective length when engaged into sockets
within the flue run is 950mm.
Flue Terminal lengths:
Horizontal 80/125mm Ø: 720mm
Vertical 80/125mm Ø: 1080mm + cage
* to outside wall.
18
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
ROOM SEALED FLUE
OPTIONS
IIMPORTANT: All the previous Pre-Installation sections must be read
and requirements met before starting boiler or flue installation.
UNPACKING THE BOILER
LIFTING AND CARRYING PRECAUTIONS:
• Lift only a manageable weight, or ask for
help.
•
When lifting or putting things down, bend
the knees, and keep the back straight
and feet apart.
•
Do not lift and twist at the same time.
•
Lift and carry objects close to the body.
•
Wear protective clothing and gloves to
protect from any sharp edges.
1
Unpacking:
It is advised that two or more persons are involved
in the transfer of the packaged boiler from the van
to the point of delivery.
INSTALLATION
1 Once the packaged boiler has been
delivered, the outer carton is opened first.
Care should be taken when releasing the
straps. If a sharp implement is used make
sure the outer carton is not pierced and that
the implement is used in such a way so that it
may not cause personal injury. All sharp
objects must be covered or the blade
retracted after use and put away in a safe
place.
Lift the accessories tray out of the top of the
boiler carton and place in a safe place away
from the installation area. Installation and
user instructions are in this tray.
2 Lift carton up and away from the boiler.
Remove protective packaging from the front
of the boiler.
Remove protective bag from the appliance.
The flue adaptor is packaged at the base of
the boiler.
All packaging must be moved away from the
installation area to avoid a potential tripping
or slipping hazard.
At all times the correct method for handling
heavy objects should be strictly observed.
2
The unpacking of the appliance requires the
removal of the board support at the base of
the boiler. Instructions for this are on the
following pages.
19
UNPACKING THE BOILER
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
UNPACKING THE BOILER
1
All removed parts must be placed safely away
from the working area until required in order
to avoid a potential tripping or slipping
hazard.
A
At all times the correct method for handling
heavy objects should be strictly observed.
Removing the base support board:
It is advised that two or more persons are involved in
the handling of the appliance during the following
proceedure.
1 Carefully pull the front panel away from the
bottom of the wall mounting frame and lift
clear of the two upright tabs (A) at the top of
the frame. Remove from the appliance and
store safely away from the working area until
required.
2 Remove the drip tray (B) by sliding forwards
and away from the appliance.
2
3 Undo the connections (D) on the flow and
return pipes (nuts one end and spring clips
(E) the other) and remove the pipes. Store
safely away from the boiler.
C
B
3
D
Undo the nut (F) securing the burner and
remove the burner (G) from the appliance.
Make sure the burner lead is unpluged
from the boiler conrol box.
INSTALLATION
Undo the hos clip connection (C) at the
top of the flue outlet assembly and the one at
the burner securing the flexible air supply
hose and remove.
D
E
D
F
G
20
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
UNPACKING THE BOILER
UNPACKING THE BOILER
4
All removed parts must be placed safely away
from the working area until required in order
to avoid a potential tripping or slipping
hazard.
H
N
At all times the correct method for handling
heavy objects should be strictly observed.
J
I
Removing the base support board:
It is advised that two or more persons are involved
in the handling of the appliance during the
proceedure.
4 Undo the hose clip connection (H ) securing
the condensate outlet to the flue manifold.
M
Undo the two screws ( I ) on the wall frame
securing the trap bracket ( J ) and remove the
complete condensate trap and outlet, by
gently pulling downwards to free the assembly
from the flue manifold. Keep all parts of the
trap assembly in a safe place until required.
INSTALLATION
L
O
P
K
Undo the nut/bolt ( K ) securing the rear of the
electrical control box (L) and swing out to the
left. Remove the thermosat phials from their
pockets noting the position of each. To
remove the phials it is necessary to first
remove the split pins holding them in situ, and
then gently remove them from their locations on
the heat exchanger feeding the capillaries (M)
through the plastic tie (N) on the front of the
heat exchanger. In some instances this plastic tie
may have to be cut free and replaced with a new
one. The control box and capillaries can now be
lifted and removed from the left hand bracket
and stored safely away from the boiler.
Undo the two screws (O) securing the
control box bracket (P) to the heat exchanger
and remove.
5
5 Undo the four nuts (Q) securing the
combustion chamber door and remove the
chamber door (R). Be careful not to damage
the front insulation panel.
S
Undo the four nuts ( S ) securing the
baffle access door and remove the door (T).
Be careful not to damage the insulation
panel and seals.
T
U
The wall mounting frame can now be
removed by undoing the two nuts ( U ) on the
wall mounting frame indicated in the circled
areas on the diagram. It is important to
keep these nuts as they will be required
to re-mount the boiler onto the frame.
U
R
Q
21
UNPACKING THE BOILER
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
UNPACKING THE BOILER
6
All packaging must be placed safely away
from the working area in order to avoid a
potential tripping or slipping hazard.
At all times the correct method for handling
heavy objects should be strictly observed.
Removing the base support board:
It is advised that two or more persons are involved in
the handling of the appliance during the following
procedure.
V
W
V
Undo the base support board nuts and bolts
(V) removing the bottom two first. The boiler will
drop slightly to the floor so keep fingers away
from the heat exchanger body when it drops.
Then remove the top two bolts and pull the
base support board (W) and its brackets away
from the appliance.
The base support (W) and the brackets
attached to it are no longer required.
Please dispose of them in a responsible
way..
V
INSTALLATION
6 Carefully lay the boiler on its left hand side.
This is where the support board is least
proud of the appliance and there is less risk
of accidental damage to components. At
least two persons will be reqiuired to do this
and the correct method for handling heavy
objects should be strictly adhered to.
V
Optional orientation of flow and return pipes:
7 At this point, before mounting the frame on
the wall the orientation of the flow and return
pies can be changed to accomodate supply
from above the appliance.
7
To do this release both clamps (X) by
undoing the two bolts. The pipes are
now free to be removed and replaced in the
upright direction (Y).
Replace the clamps and re-tighten the bolts.
Do not tighten fully so that alignment can be
made when preplumbing before mounting
the appliance.
Y
X
Note: If a rear exit flue is also used the pipes
whilst in the upright position will have to be
shortened to miss the flue.
22
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
UNPACKING THE BOILER
PIPEWORK POSITIONS &
191mm
E
FLUE OPENING
188.5mm
CAUTION: Ensure there are no pipes,
electrical cables, damp proof courses or
other hazards before drilling.
SAFETY:
All relevant safety precautions must be undertaken.
Protective clothing, footwear, gloves and safety
goggles must be worn as appropriate.
PIPEWORK POSITIONS:
A - Flow 22mm Ø copper.
B - Return 22mm Ø copper.
C - Primary drain hose connection.
D - Condensate outlet 21.5mm Ø.
E - Flue outlet.
C
NOTE: For servicing purposes, keep condensate
and pressure relief discharge pipes away from
components and pipework connections.
74.5mm flow A
108mm Return B
153.5mm Condensate D
IMPORTANT: The flue and pipework
openings are covered with tabbed blanks.
SIDE VIEW
INSTALLATION
FRONT VIEW
Remove carefully as necessary.
FLUE OPENING:
Follow the diagram opposite to mark the
centre of the flue (1, & 2) for rear opening,
(2 & 3) for side opening or
(1 & 4) for top opening.
F
H
** IMPORTANT: for horizontal flues, increase
this height by 52mm for every 1000mm of
horizontal length that the flue opening is
away from the boiler.
COMMISSIONING
G
NOTE: all horizontal flue sections must rise away
from the boiler by 52mm per metre to ensure that
condensate flows back into the boiler for safe
discharge via the condensate waste pipe.
Make an opening (F, G or H) through the wall
using a core drill or similar at a size relative to
the wall thickness as shown below:
125mm Ø flue:
Wall thickness
150 - 240mm
240 - 330mm
330 - 420mm
420 - 500mm
4
191
G
3
F
1
512 min
191
2
215
3°
188 above
H the
top of the
appliance
Flue hole size
Ø155mm
Ø160mm
Ø165mm
Ø170mm
Use the wall mounting template
(supplied in the accessories box), to
check that the required clearances are
available around the proposed boiler
location. If the clearances are available
then secure the template to the wall,
making sure that the template is level,
and then mark the fixing points and flue
exit point onto the wall.
If the flue is exiting to the left or right of
the boiler then the centre line of the flue
will need to be raised by 52mm per
horizontal metre distance from the boiler
(a 3° rise from the boiler).
CAUTION: Ensure t here are no pipes ,
electrical cables, damp proof courses or other
hazards before drilling.
23
PIPEWORK POSITIONS &
FLUE OPENING
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
BOILER INSTALLATION
1
Drill the 6 mounting holes (the wall bolts
require 10mmØ x 90mm hole depth),
the pipe fitting bracket fixing hole (wall
plug and 5mmØ screw not supplied) and
flue exit (using the size chart on the
previous page).
C
D
CAUTION: the bolts supplied are
designed to be used on a standard
plastered wall, site conditions may require
a different fixing method to be used.
C
D
NB. There is a spare set of mounting holes in
the wall mounting frame to allow for different
fixing points if any of the original mounting
holes cannot be used (due to mortar joints,
voids etc).
B
Mount the wall mounting frame onto the
wall using the wall bolts supplied,
checking that the frame is level before
finally tightening the bolts.
F
A
E
1 Move the boiler to a position near the
wall mounting frame with the rear of the
boiler facing the frame. Have the two M8
boiler securing nuts (D) from the ready for
securing the boiler when lifted into
position.
Carefully rest the boiler (A) on its front
face and then lift the boiler up and
engage the rear support (B) into the slot
on the wall mounting frame, pivot the
boiler up until the support brackets
engage on the studs (C) on the frame
then fit and tighten the M8 nuts (D) on to
the studs to secure the boiler in place.
INSTALLATION
At least two people will be required to
mount the boiler onto the frame.
Check the frame is securely fastened to the
wall before fitting the boiler.
2Grease the flue outlet seal with the
solvent free grease supplied. Fit the flue
adaptor (E) onto the flue cowl with the
analysis test points on the left hand side
using the 3 screws supplied.
Refit the electrical control box support
bracket (F) at the base of the primary heat
exchanger.
Fit the oil isolation valve bracket (G)
(included in the accessories tray) to the
mounting on the bottom of the primary
heat exchanger.
Fit the oil isolation valve (supplied in the
accessories box), and return bulkhead
fitting to the bracket.
2
F
G
24
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
BOILER INSTALLATION
COMBUSTION CHAMBER
3
Combustion chamber:
Secondary
heat exchanger
baffles and
retainer
B
Primary
heat exchanger
baffles and
restrictor
plates
3 Check all the baffles (A), baffle retainers
(B) and restrictor plates (C) are correctly
fitted, (they may have moved during
transport or installation), then refit the
baffle access door (D).
Refit the combustion chamber door (E)
using the nuts and washers (F), tighten
until the door is firmly secured using the
sequence opposite to a torque of 6 Nm.
Do not overtighten the nuts.
INSTALLATION
D
F
F
E
F
F
D
12/18
18/25
Plan sectional view
Plan sectional view
B
A
C
B
A
C
IMPORTANT when refitting
the combustion chamber
access door
Combustion chamber
access door tightening
sequence.
25
COMBUSTION
CHAMBER
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
CONDENSATE TRAP
1
B
A
D
A
F
C
1 Refit the condensate trap (A)to the flue
manifold using the hose clip (B) . Then
re-fit the bracket (C) to the wall mounting
frame using the two screws provided (D).
Fit 21.5mmØ polypropylene pipework (E)
to the condensate trap flexible pipe (F)
using the fitting provided then terminate
the trap outlet to waste.
Ensure that the condensate pipework runs
away from the boiler at a constant fall of
50mm (min.) per metre.
Remove the flue cowl access door (G) by
undoing the 4 securing nuts (H).
Carefully pour 500ml of water into the flue
cowl to fill the condensate trap.
Check the water is draining away and the
condensate pipework joints are water
tight.
Refit the flue cowl access door.
IMPORTANT: The condensate trap must be
correctly filled to prevent the possibility of
potentially harmful flue products escaping
via the condensate pipework.
500ml
E
H x4
INSTALLATION
IMPORTANT: The boiler is not designed to
take the weight of the flue system, this must
be supported externally to the boiler.
Grease the vertical adaptor seal with the
solvent free grease supplied. Install the flue
following the instructions supplied with the flue.
2 Re-fit the flow and return pipes at the boiler.
Connect the system pipework ( I ) to the
flow ( J ) and return (K) pipes on the wall
bracket. These are push fit connections
secured with spring clips (L).
G
2
I
K
L
G
I
J
26
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
CONDENSATE TRAP
OIL BURNER & PUMP
CAUTION: ISOLATE THE OIL, WATER &
ELECTRICAL MAINS SUPPLIES BEFORE
STARTING ANY WORK AND OBSERVE ALL
RELEVANT SAFETY PRECAUTIONS.
OIL BURNER:
1 Check the nozzle (A) and electrode (B)
settings are correct as shown opposite.
Ensure nozzle (A) is aligned centrally within
the combustion head (C).
Inspect for any visible defects.
IMPORTANT: Before removing or fitting a
nozzle (A), loosen screw (D) and move
the electrodes (B) forward.
Electrode gap
3.5 - 4.0mm
1
After refitting check that the electrode
gaps are correct, as shown opposite.
B
A
5mm
B
INSTALLATION
A
* NOTE: the 12/18 model has a brass
deflection washer and locating circlip behind
the nozzle. These must be in place for the
correct operation of the burner.
A
2.0 - 2.5mm
OIL PUMP:
Connecting the oil pump for a double pipe
system:
B
5mm
The pump is factory set for double pipe
operation with the flexible oil pipes fitted.
Check connections before use.
C
Converting the oil pump for a single pipe
system:
Check the inlet pipe connection (1).
D
Unscrew return oil line (2).
RIELLO RDB OIL PUMP
Remove the by-pass screw (3).
Fit a return plug (4) (not supplied) to the oil
pump and tighten to secure.
1
3
2
*
(on 12/18 model only)
Brass air deflector washer
Locating circlip
27
OIL BURNER & PUMP
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
REFITTING COMPONENTS
1
1 The burner is supplied set to the mid range
output, if a different output is required then
the burner setup will need to be changed.
Remove the air intake manifold (A) by
undoing the two SC securing screws.
For the lowest burner output the air damper
disc setting will need to be changed as
shown opposite.
D
A
C
For CF flues at 25kW output
Remove the fan housing (B) by undoing
the four securing screws.
Fit the plastic air guide (C) using the
screws supplied (D).
Reassemble the burner in reverse order.
For any output change the nozzle will need
to be changed as given in the chart below.
Connect the flexible oil hoses onto the
fittings on the boiler.
B
Adjust position of air damper discs to suit
burner output (see chart below), located as
above. Access by removing the two star
screws (SC) to release the air inlet manifold.
G
12/18
Check that the blast tube gasket is in good
condition then fit the burner onto the
combustion chamber door. If there is a wall
or cupboard directly to the right hand side
of the boiler then the burner has to be
rotated into the mounting from underneath
the boiler (E). Push the burner firmly onto
the door and secure in place with the
retaining nut (F). Tighten sufficiently to seal
but do not overtighten the nut.
Reconnect the flexible air hose to the air
inlet casing (C).
Plug the burner lead into the control box.
INSTALLATION
WARNING: Ensure the oil pipe flow/return
connections are correct or serious
pump/deaerator damage could occur.
F
E
18/25
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
USING 28sec KEROSENE:
FUEL
OIL PUMP
NOZZLE
PRESSURE FLOW RATE
(p.s.i.)
Kg/h
l/h
APPROX.
FLUE GAS
%CO2
TEMP °C
APPROX.
INPUT
OUTPUT
AIR
(APPLIANCE)
(APPLIANCE)
SETTING
kW
kW
AIR
DAMPER
DISC
SETTING
BURNER
12
LD 2X SH 12/18
HEAD
Boiler 12/18 RDB 1
0.40 60°ES
100
1.06 1.34
63
12.0
2.25
12.7
12.4
0.45 60°ES
110
1.30 1.65
69
12.0
2.5
15.6
15.2
15-18 LD 2X SH 12/18
0.50 6 0°ES
120
1.55 1.96
71
12.5
4.25
18.6
18.1
15-18 LD 2X SH 12/18
18.0 21.5-25 LD 25X 4HBP
Boiler 18/25 RDB 2.2
0.50 8 0°ES
135
1.55 1.95
74
11.0
1.5
18.5
0.60 80°ES
125
1.86 2.35
78
11.5
2.25
22.4
21.7 21.5-25 LD 25X 4HBP
*0.75 80°ES
105
2.16 2.73
85
11.5
4.0
26.0
25.2 21.5-25 LD 25X 4HBP
*For CF flues at 25kW a plastic air guide
must be fitted.
28
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
REFITTING
COMPONENTS
REFITTING COMPONENTS
2
2 Lift electrical control box (A) back onto the
supporting bracket (B).
Locate the control box bracket at the rear a
and secure at the base of the primary heat
exchanger with the securing nut (C).
Carefully feed the capilleries (D) back over
the front of the boiler and through the
plastic tie (E) and locate in the correct
pockets.
E
INSTALLATION
Slide the drip tray (F) back into position.
D
F
C
B
A
C
29
REFITTING
COMPONENTS
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
ELECTRICS
= EARTH
A
= LIVE
DANGER - 230V:
ISOLATE THE MAINS ELECTRICITY
SUPPLY BEFORE STARTING ANY
WORK AND OBSERVE ALL
RELEVANT SAFETY PRECAUTIONS.
= NEUTRAL
1
Access to 230V connections:
1Remove the five electrical box rear cover
screws (A) and remove the cover.
2Release screws (B) from cable clamp (C).
Feed sufficient power cable (D) through the
cable clamp (C) and secure grip with
screws (B).
Separate the wires from the outer insulation and
strip the insulation to 6mm.
A
F
C
2
Any external device connected to the
boiler must NOT have a separate supply.
D
C
See the following pages of electrical
diagrams for details of different systems.
INSTALLATION
230V connections:
3Connect LIVE wire (Brown) to
terminal LI.
Connect NEUTRAL wire (Blue) to
terminal N.
Connect EARTH wire (Green/Yellow) to
the terminal
.
B
A
External 230V programmer:
4 Remove the link from link block (E).
Connect wires as shown.
3
4
N1 N2 1 2 3 4 5 6
7 8 9 10
E
230V
*Move the orange wire from terminal 9 to
terminal 6 for a 3 port valve system.
CH
F
5
Optional Worcester 230V programmer:
5 Remove the four fascia mounting plate
screws (F) and remove the mounting plate
from the fascia.
Loosen the two retaining screws (G) and
remove the blanking plate (H).
Fit the programmer then retighten the
retaining screws (G).
Refit the mounting plate into the fascia and
refit the four screws (F).
Remove the link block (E).
Plug the programmer block ( J )into the
terminal block as shown.
DHW
Refit rear cover:
Refit the rear cover to the electrical box
and secure with screws (A).
External 230V
programmer
G
5 6
7 8 9 10
J
*
H
From programmer
30
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
ELECTRICS
ELECTRICS
L N
230V STANDARD WIRING DIAGRAM:
M
Key to components:
Riello Burner
= EARTH
A - EARTH TAG.
= LIVE
B - HIGH LIMIT THERMOSTAT.
= NEUTRAL
C - FLUE MANUAL RESET OVERHEAT
THERMOSTAT.
N
12 34 5 6
D - BOILER MANUAL RESET OVERHEAT
THERMOSTAT.
E - POWER SWITCH
M
F - INTERNAL PROGRAMMER CONNECTOR.
12 34 5 6
G-TERMINAL CONNECTOR BLOCK.
H - LINK CONNECTOR.
E
I - CONTROL THERMOSTAT.
J - POWER NEON.
K - LOCKOUT NEON.
L - LOCKOUT RESET SWITCH.
B
M- BURNER SOCKET.
K
INSTALLATION
N - BURNER PLUG.
C
L
D
(C)
(1)
J
I
A
G
N1 N2 1 2 3 4 5 6
7 8 9 10
F
H
31
ELECTRICS
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
ELECTRICS
= EARTH
•
• = NEUTRAL
• = SWITCHED LIVE
= LIVE
DANGER - 230V:
ISOLATE THE MAINS ELECTRICITY
PRE-WIRED REMOTE 2 OR 3 PORT VALVE
CONTROL SET USING INTERNAL
PROGRAMMER:
Key to components:
O - REMOTE JUNCTION BOX (10-way) to
connect the following:
P
Mains wiring 230V 50Hz.
Hot water tank thermostat.
Room thermostat.
System water valves.
Circulating pump.
F
7 8 9 10
G
N1 N2 1 2 3 4 5 6
H
2 PORT
3 PORT
Remote (10 way) junction box (O)
requirements:
The junction box (O) must be a terminal block
type, current rated to at least 5 amps.
A 5 amp fuse must be fitted to the mains
supply.
The junction box (O) must be fitted externally
to the boiler.
Link 1 to 3 must be removed from the boiler
terminal connector block (G).
INSTALLATION
All appliance wiring this side of
the connector remains unchanged
P - 230V WORCESTER PROGRAMMER
(fitted into fascia panel).
F - INTERNAL PROGRAMMER CONNECTOR.
G- TERMINAL CONNECTOR BLOCK.
H - LINK CONNECTOR.
A frost thermostat can also be connected to the
remote junction box if required.
INSIDE BOILER
OUTSIDE BOILER
HOT WATER ON
HEATING ON
HOT WATER OFF
Internal Programmer (P) requirements:
2 and 3 port valve control sets:
Set the pin on the rear of the programmer to
‘pumped’.
Remove the link plug (H).
Connect the plug from programmer (P) into
connector (F).
Connect terminal 1 from the boiler terminal
block (G) to the ‘HOT WATER ON’ at the
remote junction box (O).
Connect terminal 2 from the boiler terminal
block (G) to the ‘HEATING ON’ at the
remote junction box (O).
3 port valve control sets:
A 3 port valve control set also requires a live feed
from ‘HOT WATER OFF’ switch position.
O
Remove the orange wire from terminal 9 and
pull back through the tie wraps. (Ensure that
the brown wire is firmly secured in terminal 9).
Connect the orange wire to terminal 6 on the
boiler terminal block (G).
Connect terminal 6 on the boiler terminal
block (G) to the ‘HOT WATER OFF’ at the
remote junction box (O).
32
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
ELECTRICS
ELECTRICS
= EARTH
• = LIVE
• = NEUTRAL
• = SWITCHED LIVE
DANGER - 230V:
ISOLATE THE MAINS ELECTRICITY
PRE-WIRED REMOTE 2 OR 3 PORT VALVE
CONTROL SET USING EXTERNAL
PROGRAMMER:
Key to components:
O - REMOTE JUNCTION BOX (10-way) to
connect the following:
Mains wiring 230V 50Hz.
Hot water tank thermostat.
Room thermostat.
System water valves.
Circulating pump.
External programmer.
All appliance wiring this side of
the connector remains unchanged
F
7 8 9 10
N1 N2 1 2 3 4 5 6
INSTALLATION
G
H
F - INTERNAL PROGRAMMER CONNECTOR.
G- TERMINAL CONNECTOR BLOCK.
H - LINK CONNECTOR.
Remote (10 way) junction box (O)
requirements:
The junction box (O) must be a terminal block
type, current rated to at least 5 amps.
A 5 amp fuse must be fitted to the mains
supply.
The junction box (O) must be fitted externally
to the boiler.
A frost thermostat can also be connected to the
remote junction box if required.
INSIDE BOILER
Note: The power indicator on the boiler will
function as a demand indicator when the
programmer is wired into the remote wiring
centre.
OUTSIDE BOILER
O
33
ELECTRICS
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
ELECTRICS
= EARTH
DANGER - 230V:
ISOLATE THE MAINS ELECTRICITY
2 PORT VALVE CONTROL SET:
•
• = NEUTRAL
= LIVE
Key to components:
Q - CH ZONE VALVE.
R - ROOM THERMOSTAT.
S - CIRCULATING PUMP.
P
F - INTERNAL PROGRAMMER CONNECTOR.
G-TERMINAL CONNECTOR BLOCK.
H - LINK CONNECTOR.
T - HOT WATER CYLINDER THERMOSTAT.
U - HOT WATER VALVE.
P - OPTIONAL 230V WORCESTER
PROGRAMMER (fitted into fascia panel).
All appliance wiring this side of
the connector remains unchanged
F
7 8 9 10
H
Optional 230V Worcester programmer (P):
Set the pin on the rear of the programmer to
‘pumped’.
Remove the link plug (H).
Connect the plug from programmer (P) into
connector (F).
2 PORT
INSTALLATION
N1 N2 1 2 3 4 5 6
G
Terminal connector block (G):
Remove link 1 to 3.
Make link 3 to 4.
INSIDE BOILER
OUTSIDE BOILER
Brown
S
Grey
U
Blue
Yellow/Green
Orange
Brown
Blue
Grey
Blue
Yellow / Green
Orange
Brown
T
Q
1
C
2
R
Blue
34
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
ELECTRICS
ELECTRICS
= EARTH
• = LIVE
• = NEUTRAL
DANGER - 230V:
ISOLATE THE MAINS ELECTRICITY
3 PORT VALVE CONTROL SET:
Key to components:
R - ROOM THERMOSTAT.
S - CIRCULATING PUMP.
P
F - INTERNAL PROGRAMMER CONNECTOR.
G-TERMINAL CONNECTOR BLOCK.
H - LINK CONNECTOR.
T - HOT WATER CYLINDER THERMOSTAT.
U - MID-POSITION VALVE.
P - OPTIONAL 230V WORCESTER
PROGRAMMER (fitted into fascia panel).
F
7 8 9 10
N1 N2 1 2 3 4 5 6
Terminal connector block (G):
Remove link 1 to 3.
Make link 3 to 5.
H
INSTALLATION
G
Optional 230V Worcester programmer (P):
Set the pin on the rear of the programmer to
‘pumped’.
Remove the link plug (H).
Connect the plug from programmer (P) into
connector (F).
Move the orange wire from terminal 9 to
terminal 6.
3 PORT
INSIDE BOILER
OUTSIDE BOILER
Brown
S
Blue
Yellow/Green
Blue
White
Orange
Grey
U
T
1
C
2
R
Blue
35
ELECTRICS
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
PRE-COMMISSIONING CHECKS APPLIANCE
CAUTION: ISOLATE THE MAINS ELECTRICAL
SUPPLIES BEFORE STARTING ANY WORK
AND OBSERVE ALL RELEVANT SAFETY
PRECAUTIONS.
3
1Check that the service and water pipes are
connected correctly.
2 Check that the oil supply is kerosene and
that the pipework is connected correctly to
the oil pump.
Check that the burner is seated correctly
on its mounting.
Turn on the main oil supply valve at the
tank, check the oil supply pipework and
connections. Rectify any leaks.
3 Check the flue is correctly fitted and the
connections are secure.
1
4 Check the condensate pipework is
correctly fitted and connected.
5 Check the condensate trap is filled with
water.
5
2
After successfully completing all of the
checks and any rectification work, close
the water valves, shut off the oil supply
and electrically isolate the boiler.
Complete the installation part of the
Guarantee Registration Card, and
complete a CD10 or equivalent to
inform the LABC of the installation.
4
COMMISSIONING
IMPORTANT: If the boiler is not to be
commissioned immediately then:
36
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
PRE-COMMISSIONING
CHECKS - APPLIANCE
FILLING THE SYSTEM
1
1 Open all system and radiator valves.
Turn on the water main stop cock.
Open vented systems only:
Turn on the water to the system feed and
expansion cistern and allow the system to
fill.
2 Sealed systems only:
Check and if required, adjust the expansion
vessel pressure using the Schraeder type
valve (C).
2
1 - 2 bar
Fill the system to between 1 and 2 bar
pressure via a WRAS approved filling link.
C
Monitor the pressure gauge during venting
and repressurise if required.
3 Vent all radiators, retighten when completed.
Check the system and correct any leaks.
Bleed air from at least one of the secondary
heat exchanger air vents (a radiator key is
ideal for this). There are two venting
bosses (A) on the top of the secondary
heat exchanger. Only one is used if fluing
to the side. The (A) in use and (B) must be
bled.
3
A
A
Bleed air from the primary heat
exchanger air vent (B).
COMMISSIONING
B
37
FILLING THE SYSTEM
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
STARTING THE APPLIANCE
IMPORTANT: Never run the appliance when
the appliance/system is unpressurised
(sealed systems) or empty.
POWER SWITCH
1
1Check the oil supply is correctly fitted and
in good working order before turning on
the oil supply valves to the boiler.
Turn on the main oil supply valve at the tank
and draw off oil until a steady flow of clear
uncontaminated oil can be seen as follows:
• The oil supply to the boiler should be
primed before the burner is operated to
avoid unnecessary pump wear.
• The use of an oil suction pump will prime
and flush through any oil supply set up
simply and easily. Alternatively the
following procedures can be used:
RIELLO
RDB OIL PUMP
C
D
Single pipe gravity feed systems:
Disconnect the flexible oil pipe and open
the isolating valve to discharge the oil into a
suitable container.
If a top entry tank has been used the
pipework will need to be primed before the
oil will discharge under gravity.
When completed, close the isolating valve,
reconnect the flexible oil pipe.
B
A
A - Bleed & pressure gauge port
Double pipe sub-gravity feed systems
and single pipe suction lift with de-aerator:
B - Pressure adjustment
C - Vacuum gauge port
Return
Flow
TANK
E
F
Kerosene
G
To prime a de-aerator, disconnect the
flexible oil inlet hose (F) from the isolation valve
and place in a container of kerosene (G).
Connect a spare flexible oil hose (E), to
discharge into container (G). Open the
isolating valve, turn on the power to the boiler
and set the programmer to ON. Prime the
de-aerator until there is a steady flow of oil into
container (G). Turn off the boiler then
reconnect the flexible oil inlet hose (F).
Turn on the boiler, the oil level in the de-aerator
will drop as the oil is used until the oil is drawn
from the tank. If the de-aerator empties and the
burner locks out before the oil is drawn from
the tank prime the de-aerator again.
Open the isolating valve and the oil pump
bleed valve (A) to discharge into a suitable
container once the boiler is started up.
Switch on the electrical supply to the boiler.
Switch on the boiler at the power switch.
COMMISSIONING
Prime the oil supply pipework to prevent oil
pump damage .
D - Retaining screws - cover
IMPORTANT: The burner has an 11 second
delay before the motor is activated.
BURNER LOCKOUT
H
I
BURNER LOCKOUT RESET BUTTON ( I )
Set the programmer to ON.
Turn on the boiler control thermostat.
Allow the burner to run through to 'lock-out'
indicated by the illumination of the lockout
indicator (H), (note: some systems will not
lock out).
If lockout occurs wait 2 minutes then press
the lockout reset button ( I ).
Repeat the procedure at least 3 times or
until a steady stream of oil, without air, runs
from the bleed port, then relock the bleed port.
Switch off the boiler at the power switch.
Remove the oil pump filter, clean with
kerosene and refit.
The internal filter is accessed by removing the
oil pump cover.
Safely dispose of the container/discharge.
38
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
STARTING THE
APPLIANCE
STARTING THE APPLIANCE
2
2 Fit a suitable pressure gauge to port (A)
on the oil pump.
Adjust the air shutter (L) and pump pressure
(B) as shown in the table opposite. The
burner should ignite following a pre-ignition
period of approx. 15 seconds.
If changing the burner output, check the
position of the air damper disc is correct to
the output as shown in the table below.
D
E
D
Boiler lockout indicator on:
SC
SC
12/18
Adjust position of air damper discs to suit
burner output (see chart below), located as
above. Access by removing the two star
screws (SC) to release the air inlet manifold.
18/25
3
4
F
If after-spurting occurs:
Release the burner retainer (F).
Remove the burner, combustion head (G).
and electrodes, hold the burner vertical
to unscrew the nozzle and fill the nozzle
holder with kerosene.
Refit nozzle, electrodes, combustion
head (G) and the burner.
Restart and run for 3 minute intervals until
after-spurting stops.
G
COMMISSIONING
RIELLO
5
4Start and run for 20 minutes.
Remove sampling point plug (K) to check
the smoke reading is between 0-1. If the
smoke level is above 1, check the combustion
settings are correct and the oil nozzle is in
good condition.
C
B
A
A - Bleed & pressure gauge port
Note: smoke readings may be inaccurate until
the smoke from burning organic binder in the
access door insulation has ceased.
D
B - Pressure adjustment
Check the CO2 levels and adjust the air
shutter (L) setting according to the table
opposite.
Check the flue gas temperature is close to
the values shown in the table.
C - Vacuum gauge port
L
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
USING 28sec KEROSENE:
FUEL
OIL PUMP
NOZZLE
PRESSURE FLOW RATE
(p.s.i.)
Kg/h
l/h
Wait 2 minutes then press the lockout
reset button (D) to initiate another start
sequence.
Repeat procedure until a flame is established.
3Start and run for 3 minutes then switch off.
Check for after-spurting from the nozzle,
indicated by oil saturation on the combustion
head (G).
K
RDB OIL PUMP
If the burner fails to establish a normal firing
pattern or flame failure occurs the flame
monitoring photocell mounted in the burner
body will alert the burner control box to shut
the burner down and provide a safe lockout
state indicated by the illumination of the lockout indicator (E).
APPROX.
FLUE GAS
%CO2
TEMP °C
APPROX.
INPUT
OUTPUT
AIR
(APPLIANCE)
(APPLIANCE)
SETTING
kW
kW
Boiler 12/18 RDB 1
0.40 60°ES
100
1.06 1.34
63
12.0
2.25
12.7
12.4
0.45 60°ES
110
1.30 1.65
69
12.0
2.5
15.6
15.2
0.50 6 0°ES
120
1.55 1.96
71
12.5
4.25
18.6
18.1
18.0
Boiler 18/25 RDB 2.2
AIR
DAMPER
DISC
SETTING
BURNER
If the flue gas temperature is too high and the
baffles are correctly fitted, then reduce the oil
pump pressure (B) 5-10p.s.i. to compensate
for nozzle variations.
Turn off the electrical supply.
Isolate the oil supply to the burner.
Remove the oil pressure gauge.
Refit the blanking plug (A).
Check and rectify any oil leaks.
12 LD 2X SH 12/18
5Switch on the oil supply.
15-18 LD 2X SH 12/18 Switch on the electrical supply.
15-18 LD 2X SH 12/18 Restart the boiler and run for 5 minutes.
Recheck the CO2 levels and if required,
adjust the air shutter setting (L) to obtain
21.5-25 LD 25X 4HBP
the correct CO2 level.
Refit the sample point cap.
21.5-25 LD 25X 4HBP
HEAD
0.50 8 0°ES
135
1.55 1.95
74
11.0
1.5
18.5
0.60 80°ES
125
1.86 2.35
78
11.5
2.25
22.4
21.7
*0.75 80°ES
105
2.16 2.73
85
11.5
4.0
26.0
25.2 21.5-25 LD 25X 4HBP
39
STARTING THE
APPLIANCE
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
STARTING THE APPLIANCE
B
1
C
A
IMPORTANT: The burner has an 11 second
delay before the motor is activated.
Ensure all radiators are heating up evenly
and balance the system to the temperature
difference required for the heating flow and
return according to the heating load.
2Set the room thermostat to minimum.
The burner and circulating pump should be off.
3Check that any other controls that are fitted
to the system are operating properly.
COMMISSIONING
2
Central heating:
1Open all radiator valves.
Set room thermostat to maximum.
Set programmer to ON for CH, OFF for
DHW (if applicable).
Turn the thermostat control (A) to max.
The power on indicator (C) will always be
on except for when wired as a ‘pre-wired
remote 2 or 3 port valve using external
programmer’. In this configuration the
indicator will only be on for demand.
Switch on the boiler by pressing the power
button (B).
40
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
STARTING THE
APPLIANCE
WATER TREATMENT
1
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 appliance
will invalidate the appliance warranty.
B
B
2
A
A
C
FLUSHING (Central Heating):
1Switch off the boiler.
Open vented systems only: turn off the
water to the system header tank.
Open all radiator valves/drain cocks (B) and
drain the system while the appliance is hot.
Close drain cocks (B).
2Add a suitable flushing agent (F) and refill
the system at the correct strength for the
system condition in accordance with the
manufacturer's instructions.
Vent the boiler using a radiator key or
suitable screwdriver (there are two vent
points (A) at the top of the secondary heat
exchanger. Only one may be in use, the
other may be obscured by side fluing.
Always vent (A) and the vent point on the
primary heat exchanger (C) and all radiators.
Run the boiler/system at normal operating
temperature for the time stated by the
flushing agent manufacturer.
3Drain (B) and thoroughly flush the system to
remove the flushing agent and debris.
INHIBITOR (Central Heating):
4Check drain cocks (B) and manual air vents
are closed and all radiator valves are open.
COMMISSIONING
3
5Add a suitable inhibitor (I), (or combined
inhibitor/anti-freeze if the system is exposed
to freezing conditions) to the heating system
in accordance with the manufacturers
instructions.
B
The inhibitor or combined inhibitor/anti-freeze
must not cause damage to the materials within
the boiler (mild steel, stainless steel, copper
and brass) and any other materials/components
within the system.
Open vented systems only: turn on the
water to the system header tank and allow
the system to fill.
Sealed systems only: fill the system to
between 1 and 2 bar via a WRAS approved
filling loop.
4
B
6Vent the boiler, (there are two vent points
(A) at the top of the secondary heat
exchanger. Only one may be in use, the
other may be obscured by side fluing.
Always vent (A) and the vent point on the
primary heat exchanger (C) and all
radiators; retighten vents when complete.
5
7Record the date when the inhibitor was
added to the system on the guarantee card.
NOTE: The concentration level of inhibitor in
the system should be checked every 12
months or sooner if system content is lost.
The addition of sealing agents to the system
water is not permitted as this can cause
problems with deposits left in the heat
exchanger and invalidate the appliance and
heat exchanger warranty .
1 - 2 bar
6
A
A
C
31
41
WATER TREATMENT
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
FINISHING COMMISSIONING APPLIANCE
A
1
B
1Locate the top rear edges of panel (A )
onto the supporting tabs ( B ) and drop the
front panel carefully into position over the
appliance. Push gently into place taking
care to apply any pressure at the edges
of the panel to avoid accidental damage
Lift the bottom panel (C) into place
beneath the boiler and engage the front lip
with the bottom of the front casing.
Secure both panels to the wall mounting
frame by replacing the screws (D) located
at the bottom of the wall mounting frame (E).
COMMISSIONING
2To fit the front flap follow the instructions on
the label attatched to the component.
Engage the flap in one pivot as indicated in
diagram (F).
Carefully bend the flap as shown in diagram
(G).
Engage second pivot to complete fitting as
shown in diagram (H).
2
E
C
F
D
Handover:
Complete the Guarantee Registration Card,
Combustion Record (page 50) and CD11 or
an equivalent commissioning form.
Set up the controls and show the user how
to operate all the controls shown in the User
Guide and all system controls.
Where applicable, instruct the customer how
to repressurise the system.
G
H
If the appliance is unused and exposed to
freezing conditions, shut off all the mains
supplies and drain the system and boiler.
NOTE: Release drain point ( I ) to drain the
primary heat exchanger.
I
42
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
FINISHING
COMMISSIONING - APPLIANCE
INSPECTION AND SERVICE
1
B
B
CAUTION: ISOLATE THE WATER,
ELECTRICAL AND OIL MAINS SUPPLIES
BEFORE STARTING ANY WORK AND
OBSERVE ALL RELEVANT SAFETY
PRECAUTIONS.
Routine servicing:
To maintain efficient boiler operation, the following
should be carried out at least once a year:
Carry out a pre-service check and note any
operational faults:
Pre-Service Check:
1Undo the screws (A) located at the bottom
of the wall mounting frame, remove the base
panel, hold the casing and pull slightly
away from the appliance from the bottom,
before lifting free of the supporting tabs (B )
on the top of the wall mounting frame.
Be sure to place the front cover and base
panel in a safe place away from the working
area.
Operate the appliance and system and note
any faults which may need to be corrected
during the service.
2 Switch off and electrically isolate the
boiler.
Depress locking ears and unplug burner
lead from control box (C).
2
C
3 Loosen clip (D) to detach air duct pipe
from the burner.
Remove the drip tray (E) by pulling forward
and free of the appliance.
3
Unscrew burner retainer nut (F) and gently
ease the burner forward and downwards
until clear of primary heat exchanger. The
burner may be hung on the hook (G)
provided.
A
SERVICING
& SPARES
D
E
G
F
Service requirements:
See the following instructions for detail of some
of the service requirements listed below:
Check and clean the burner.
Replace the burner nozzle and flexible oil
pipe/s.
Check and clean the baffle retainers.
Check and clean the baffles.
Check and clean the heat exchangers
surfaces.
Check the combustion chamber access
door insulation board.
Check that the flue system is unobstructed
and clean as necessary.
Clean or replace all oil filters.
Check that the condensate system is not
obstructed, clean and refill the condensate
trap as necessary.
Sealed systems only. Important:
The PRV is a safety device and must be
checked for correct operation.
The expansion vessel pressure must also be
checked and adjusted if required.
43
INSPECTION AND
SERVICE
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
INSPECTION AND SERVICE
Clean the Burner:
Remove the air intake cover (A) and clear
any debris from the air intake and air damper.
Disassemble the burner to allow access to
the fan impeller.
Check the condition of the gaskets between
these parts and replace if necessary.
Note the position of the air damper
adjustment and check the air damper moves
freely.
Clean both sides of the fan impeller and
remove any debris from the burner housing.
Check that the impeller rotates freely.
Reassemble the components.
Remove the combustion head (B) and
thoroughly clean any deposits.
A
B
IMPORTANT: Before removing or fitting a
nozzle (C), loosen screw (D) and move
the electrodes (E) forward.
After refitting check that the electrode
gaps are correct, as shown opposite.
D
F
Remove the nozzle (C).
Check the nozzle holder is clear of any debris
and clean if neccessary.
Fit a new oil atomising nozzle (C).
DO NOT dismantle the nozzle and DO NOT
clean the nozzle tip.
Check the electrodes (E) and reset if
necessary as shown opposite.
5mm
Electrode gap
3.5 - 4.0mm
E
E
5mm
RIELLO
B
E
C
RDB OIL PUMP
G
H
C
2.0 - 2.5mm
(on 12/18 model only)
Brass air deflection washer
Refit the combustion head (B). Check that
the nozzle (C) is central in the combustion
head (B) and the head settings are as
shown. Ensure that the photocell is lined up
with the sight hole.
Withdraw the photocell (F) from its housing
and wipe clean.
Remove the oil pump internal filter, clean in
kerosene and reassemble.
The internal filter is accessed by removing
screws (G) and the oil pump cover (H).
SERVICING
& SPARES
C
NOTE: The 12/18 model has a brass air
deflection washer and locating circlip behind
the nozzle. These must be in place for the
correct operation of the burner.
Replace the standard flexible oil line/s at
every annual service to prevent the
possibility of leakage due to ageing.
Reassemble the burner components.
Check the O-ring seal located around the
combustion head and replace if necessary.
This seal must be in good condition, seal
failure will cause flue gases to escape into
the room.
Locating circlip
G - Retaining screws - cover
H - Cover - oil pump
44
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
INSPECTION AND
SERVICE
INSPECTION AND SERVICE
External oil filter:
Remove the paper element from the external
oil filter and replace it. If the filter contains a
washable element, thoroughly clean in
kerosene and reassemble into the filter.
A
Clean the boiler:
B
Manifold access:
L
I
H
H
H
H
D
C
F
E
500ml
G
A
SERVICING
& SPARES
B
12/18
Plan sectional view
K
L
J
18/25
Plan sectional view
K
L
IMPORTANT when refitting
the combustion chamber
access door
J
Release the 4 nuts (A) to remove the flue
manifold access cover (B) and remove any
debris.
Check the condensate route is clear and
clean the condensate trap and pipework.
Check the flue system and clean if necessary.
Remove the baffle access cover (C) by
removing the 4 retaining nuts (D).
Remove the baffle retainer (E) and baffles (F)
from the secondary heat exchanger.
Check and clean the secondary heat
exchanger surfaces.
NOTE: Do not use wire brushes and
cleaning agents to clean the stainless steel
secondary heat exchanger components.
Pour 500ml of water into drain (G) to refill the
condensate trap.
Clean the secondary heat exchanger baffles
(F) if necessary and refit correctly.
Refit the baffle retainer (E).
Refit the flue manifold access cover (B) and
secure with nuts (A).
Combustion chamber:
Release the M10 retaining nuts and washers (H)
and remove combustion chamber access door ( I ).
Check the fibreglass rope seal on the
combustion chamber access door ( I ) and
replace if necessary.
Remove the baffle retainers (J) through the
baffle access at the top of the boiler while at
the same time holding the primary baffles (K)
through the primary heat exchanger. Remove
the baffles through the primary heat exchanger.
Clean and check the condition of the baffles
and the restrictor plate/s (L). Replace any
part considered to be badly corroded/degraded.
Thoroughly clean all of the heat exchanger
surfaces using a suitable brush and clear all
loose debris from the combustion chamber
and upper chamber.
Check the condition of the combustion
chamber access door insulation. If the
insulation is damaged the door assembly
must be replaced.
Refit the items in reverse order ensure the
baffles , baffle retainers and restrictor
plate/s are correctly fitted for the boiler
output as shown in the plan view opposite.
Check the seal on the baffle access cover
(C) and replace if necessary.
Refit combustion chamber access door (I).
Secure with nuts and washers (H) and
tighten to 6 Nm until the door is firmly
secured using the sequence shown
opposite. Do not over tighten the nuts.
Fire valve:
Combustion chamber
access door tightening
sequence.
Check that the oil supply pipe has a fire valve
fitted externally to the building with the fire
valve sensor located within the appliance
case. A fire valve sensor clip is provided for
this purpose.
45
INSPECTION AND
SERVICE
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
BAFFLE ARRANGEMENT 12/18
12/18 MODEL SHOWN
BAFFLE ACCESS DOOR
BAFFLE RETAINER
Remove and fit through baffle access door.
BAFFLE
2 for 12/18 models, fitted in tubes 1 & 4.
Lift baffle to remove the baffle retainer then
pull down to remove the baffle through the
combustion chamber.
1
2
3
4
RESTRICTOR PLATE
2 for 12/18 models, fitted into tubes 2 & 3.
Remove and fit through baffle access door.
SERVICING
& SPARES
COMBUSTION CHAMBER ACCESS DOOR
46
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
INSPECTION AND
SERVICE
BAFFLE ARRANGEMENT 18/25
18/25 MODEL SHOWN
BAFFLE ACCESS DOOR
BAFFLE RETAINER
Remove and fit through baffle access door.
BAFFLE
3 for 18/25 models, fitted in tubes 1, 3 & 4.
Lift baffle to remove the baffle retainer then
pull down to remove the baffle through the
combustion chamber.
1
2
3
4
RESTRICTOR PLATE
1 for 18/25 models, fitted into tube 2.
Remove and fit through baffle access door.
SERVICING
& SPARES
COMBUSTION CHAMBER ACCESS DOOR
47
INSPECTION AND
SERVICE
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
INSPECTION AND SERVICE
Re-commission the burner:
1 Align burner combustion head into the
combustion chamber door.
Locate the burner retainer (A) over the
threaded lug on the collar (B). Push the
burner firmly onto the flange and secure in
place with the retaining nut (C). Tighten
sufficiently but refrain from overtightening.
Check that the burner is seated correctly
on ithe door and that the oil pipe/s are not
trapped in front of or underneath the burner.
C
B
A
2 Attach air duct pipe and tighten clip (D) to
secure to the burner air intake.
Replace the drip tray (E).
Plug burner lead (F) into control box.
D
E
G
H
Locate the top rear edges of panel (G)
onto the supporting tabs ( H ) and drop the
front panel carefully into position over the
appliance. Push gently into place taking
care to apply any pressure at the edges
of the panel to avoid accidental damage
Lift the bottom panel into place beneath the
boiler and engage the front lip with the
bottom of the front casing.
Secure both panels to the wall mounting
frame by replacing the screws ( I ) located
at the bottom of the wall mounting frame.
After service handover:
Make a note of the date of any water treatment.
Set the controls back to the users
requirements.
Complete the service interval record at the
back of this manual and a CD11 or an
equivalent form.
If the appliance is unused and exposed to
freezing conditions; shut off all the mains
supplies, isolate the boiler and drain the
system and boiler, including the secondary
heat exchanger.
SERVICING
& SPARES
Connect an oil pressure gauge to the oil
pump, run the burner and check the oil
pressure is correct for the required boiler
output. Check that the smoke reading is
between 0 - 1. If above 1 check the air
setting. If the air setting is correct check
that the burner has been reassembled
correctly.
Allow the boiler to warm up then check the
combustion settings are correct as
indicated in the table on page 39, adjust
the CO2 if necessary using the air shutter.
When the combustion is correct turn off the
boiler, remove the pressure gauge and refit
the blanking plug and plastic cover.
F
I
48
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
INSPECTION AND
SERVICE
SHORT PARTS LIST 12/18
5
8
12
16
3
2
1
7
6
9
17
1 Burner - Riello RDB 1 12/18 HE
Part Number: 8 718 681 015 0
2 Combustion head - LD2X SH12/18
Part Number: 8 716 112 731 0
3 Control box MO535
Part Number: 8 718 682 250 0
4 Photocell
Part Number: 8 716 109 193 0
5 Ignition electrode
Part Number: 8 716 109 211 0
6 Motor
Part Number: 8 716 109 186 0
7 Oil pump - Riello RDB
Part Number: 8 716 115 297 0
7a Pump coupling
Part Number: 8 716 109 245 0
8 Flexible oil hose kit
Part Number: 8 716 108 052 0
7a
11
10
13
4
14
18
9 Burner 'O' ring
Part Number: 8 718 682 439 0
10 Control thermostat
Part Number: 7 718 680 902 0
11 Auto reset overheat thermostat
Part Number: 8 716 107 623 0
12 Manual reset overheat thermostat
Part Number: 8 716 107 625 0
13 Manual reset flue thermostat
Part Number: 8 716 107 624 0
14 Air damper disc 12 15-18
15
19
20
Part Number: 8 716 112 778 0
15 Cleaning brush
Part Number: 8 716 109 428 0
16 Secondary Heat Exchanger gasket
Part Number: 8 716 112 954 0
17 Nozzle holder
Part Number: 8 716 109 337 0
SERVICING
& SPARES
18 Circlip
Part Number: 8 716 112 773 0
19 Brass air restrictor washer
Part Number: 8 716 112 729 0
20 Oil nozzle
0.40 60° ES (12kW output)
Part Number: 8 716 156 679 0
0.45 60° ES (15kW output)
Part Number: 8 716 114 545 0
0.50 60° ES (18kW output)
Part Number: 8 716 156 671 0
49
SHORT PARTS LIST 12/18
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
SHORT PARTS LIST 18/25
5
12
16
7
6
9
7a
11
10
13
17
4
14
15
5 Ignition electrode
Part Number: 8 716 109 211 0
6 Motor
Part Number: 8 716 109 186 0
7 Oil pump - Riello RDB
Part Number: 8 716 115 297 0
7a Pump coupling
Part Number: 8 716 109 245 0
8 Flexible oil hose kit
Part Number: 8 716 108 052 0
9 Burner gasket
Part Number: 8 718 682 439 0
10 Control thermostat
Part Number: 8 718 680 902 0
11 Auto reset overheat thermostat
Part Number: 8 716 107 623 0
12 Manual reset overheat thermostat
Part Number: 8 716 107 625 0
13 Manual reset flue thermostat
Part Number: 8 716 107 624 0
14 Air damper disc 18 21.5-25
Part Number: 8 716 112 783 0
15 Cleaning brush
Part Number: 8 716 109 428 0
16 Secondary Heat Exchanger gasket
Part Number: 8 747 009 725 0
17 Oil nozzle
0.50 80° ES (18kW output)
Part Number: 8 716 156 671 0
0.60 80° ES (21.5kW output)
Part Number: 8 716 156 670 0
0.75 80° ES (25kW output)
Part Number: 8 716 109 387 0
SERVICING
& SPARES
8
3
2
1
1 Burner - Riello RDB 2.2 18/25 HE
Part Number: 8 718 681 016 0
2 Combustion head - T2 SH18/25
Part Number: 8 718 682 170 0
3 Control box MO535
Part Number: 8 718 682 250 0
4 Photocell
Part Number: 8 716 109 193 0
50
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
SHORT PARTS LIST 18/25
FAULT FINDING
Oil/
combustion
smells
Noisy burner
operation
High smoke
number
Pulsation on
start up
Intermittent
lockout
51
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
Rectify oil leak, replace
components if necessary.
Yes
No
Replace seals.
Remove
blockage/restriction.
Check flue seals.
No
No
Yes
Are the boiler combustion
chamber door, baffle or flue
access door seals leaking?
Yes
No
Yes
Is the flue blocked or
restricted?
Worn motor bearings:
replace the motor.
Move the fan away from
the housing. Replace if
distorted or unbalanced.
Check all combustion
settings.
Is there an oil leak? Check
all oil pipes & connections
for traces of oil
Yes
Is the noise from the
motor?
No
Is the fan touching the
fan housing or causing
vibration?
Yes
No
Service the burner and
the boiler.
Rectify the flue system
to match one of the
available flue options.
Has the burner been
serviced?
No
Yes
No
Is the flue system
correct?
Replace the nozzle and
recheck combustion.
Yes
Is the noise due to
combustion?
The oil system must be drained
& refilled with kerosene, then
recheck the combustion.
No
Yes
Change the flue system
to meet the literature
specifications.
Rectify the combustion
settings.
Is the fuel correct?
Kerosene only
No
No
Yes
Replace any seals that
are damaged or suspect.
Yes
No
No
Yes
Yes
Are the burner seals
leaking? Check all seals.
Air in the oil line:
investigate where the air
is getting into the oil line.
Yes
Bleed the pump. Does
the noise reduce?
Rectify the combustion
settings.
No
Are the combustion
settings correct for the
boiler & burner output?
Is the flue system
correct?
Are the combustion
settings correct for the
boiler & burner output?
Yes
Check all connections on
the burner and rectify
any faults.
Change the flue system
to meet the literature
specifications.
Check for air in the oil:
rectify oil line fault.
Are the electrical
connections on the
burner all sound?
Rectify the combustion
settings.
Yes
No
Is the flue system
correct?
No
Is the oil system a gravity
Yes
system?
No
Yes
No
Are the combustion
settings correct for the
boiler & burner output?
Start
Burner not operating normally.
Find symptom list below.
FAULT FINDING
& DIAGRAMS
Check flue draught with
gauge. Check flue seals.
Check flue for damage.
CF
Is the flue CF or RS?
Worn oil pump: replace
the oil pump
Check incorrect
parts/rectify settings.
No
Are all the combustion
head settings and
components correct?
RS
Yes
Check the photocell using the
information under the control
box chart.
Check flue seals. Check
flue for damage.
Remove
blockage/restriction.
Check flue seals.
No
Is the flue blocked or
restricted?
BOILER LOCKOUT:
Yes
replace the nozzle and
recheck combustion.
UNDER NO
CIRCUMSTANCES MUST
AN APPLIANCE BE LEFT
OPERATING WITH ANY
CONTROL LINKED OUT OR
OVER RIDDEN.
Indicated by the illumination of
the lockout indicator on the
fascia.
To reset, wait 2 minutes then
press the lockout reset button.
These fault finding charts are provided to assist competent and suitably qualified engineers to
locate and rectify faults. Whilst every effort has been taken to ensure the information given is
correct and complete we cannot guarantee that every eventuality has been covered.
Worcester, Bosch Group cannot be held responsible for costs incurred by persons not deemed
to be competent.
FAULT FINDING
BURNER FUNCTION
No power to the boiler.
Check external supply and
wiring. Rectify the fault.
No
No
FAULT FINDING
& DIAGRAMS
Is the power button ON?
Yes
No
Yes
Press in the power button
Is there 230V on terminal
L1 on the boiler connector
block?
Check the power switch
and its wiring.
Rectify the fault.
Yes
Yes
Replace the burner
control box.
Yes
Check and correct
programmer/timer
settings.
Is the power light
illuminated?
NOTE: When external
wiring centre and external
programmers are used
together this is a
demand indicator.
Start
No heating/hot water
Replace the control
thermostat
Is there 230V on pin 3 of
the control thermostat?
(the red wire)
Locate fault between the
control thermostat and
the burner.
Rectify fault.
Yes
Check external wiring.
Rectify the fault.
No
Is there 230V on
terminal 3 on the boiler
connector block?
Follow the control box
fault finding chart to
locate fault.
No
No
Yes
Yes
No
Is there 230V into the
burner control box?
Switch the
programmer/timer to ON.
Does the boiler fire up?
No
Is the programmer/timer
ON for heating/hot
water?
No
Is the burner lockout
light illuminated?
Yes
Yes
Check the wiring and
thermostats for open
circuit. Replace the faulty
part.
No
Is there 230V on the
orange wire to the high
limit thermostat?
No
Check external wiring.
Rectify the fault.
No
Is the flue or boiler
overheat thermostat
tripped out?
Yes
Yes
Lack of system water circulation.
Check the pump, valves and system.
Rectify the fault.
Reset the thermostat and
investigate cause of overheat. If the
thermostat will not reset, replace
the thermostat
UNDER NO
CIRCUMSTANCES MUST
AN APPLIANCE BE LEFT
OPERATING WITH ANY
CONTROL LINKED OUT OR
OVER RIDDEN.
These fault finding charts are provided to assist competent and suitably qualified engineers to
locate and rectify faults. Whilst every effort has been taken to ensure the information given is
correct and complete we cannot guarantee that every eventuality has been covered.
Worcester, Bosch Group cannot be held responsible for costs incurred by persons not deemed
to be competent.
FAULT FINDING
HEATING/ HOT WATER
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
52
FAULT FINDING
FAULT FINDING
Flue
overheat
thermostat
tripping out.
Short
cycling.
Boiler
overheat
thermostat
tripping out.
Yes
Check boiler & flue for damage,
replace any damaged
components before filling boiler.
No
Is the boiler filled with
water?
Yes
Refit baffles and restrictor
plate/s as appropriate for
output.
No
Are all the baffles and
restrictor plate/s fitted? (See
installation section for details).
Replace the control
thermostat.
Reduce the boiler/burner
output following the
instruction manual settings.
Is the short cycling
caused by the external
controls?
No
Yes
No
Is the boiler/burner
output matched to the
heating load?
Yes
Replace the flue
overheat thermostat
Check and correct all
external controls.
Push themostat fully
down the thermostat
pocket.
Fit an automatic bypass valve to give
at least a 3 metre circuit when
activated.
Is the control thermostat
bulb pushed firmly down
the thermostat pocket?
Check and rectify the
system/circulating pump.
Yes
No
Is there an automatic bypass fitted,
(3m min. circuit length), if TRVs are
used on all radiators?
No
Yes
No
Is the system water
circulating normally?
Start
Boiler not operating normally.
Find symptom list below.
FAULT FINDING
& DIAGRAMS
Yes
Replace high limit stat
(manual reset).
No
Is flow temperature
above 85°?
Yes
Replace control stat.
UNDER NO
CIRCUMSTANCES MUST
AN APPLIANCE BE LEFT
OPERATING WITH ANY
CONTROL LINKED OUT OR
OVER RIDDEN.
These fault finding charts are provided to assist competent and suitably qualified engineers to
locate and rectify faults. Whilst every effort has been taken to ensure the information given is
correct and complete we cannot guarantee that every eventuality has been covered.
Worcester, Bosch Group cannot be held responsible for costs incurred by persons not deemed
to be competent.
FAULT FINDING BOILER
BOILER FUNCTION
53
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
Replace
photo cell
Replace
control box
Yes
No
No
Yes
Replace
control box
Replace
solenoid coil
Replace
motor
Yes
Replace oil
pump
Yes
Oil to pump?
No
Drive
coupling
broken?
No
Purge
pressure
1-2 bar?
No
Pump
produces
pressure?
Unblock or
replace pipe
Yes
Yes
No
Replace
solenoid coil
No
(100Ω)?
Solenoid coil
Yes
functional
No
FAULT FINDING
FAULT FINDING
& DIAGRAMS
Replace
control box
No
Replace
pump stem
valve,
pressure
OK?
Yes
Solenoid
lead OK?
Solenoid operating?
increase the pump pressure.
Pressure now OK?
Yes
Combustion
air setting
correct?
Nozzle
atomising
fuel?
Yes
No
Reset air
setting
No
Pipe to
nozzle
holder OK?
All resistance measurements are actual measured values and some variation is to be expected, therefore measured
values should be similar to but not necessarily identical to the given values.
The operation of the photo cell can be tested by measuring the resistance across the photo cell, it should be a high
resistance (greater than 10MΩ or open circuit) in the dark and low resistance (3kΩ or less) in light.
Burners on balanced flue systems can recirculate flue products resulting in the burner cycling, if this happens check the
flue system integrity and the terminal position.
No
Yes
Replace
motor
Photo cell
functional?
No
Motor 40Ω
between blue &
black wires ?
(100Ω)?
Yes
Replace
motor/pump
No
Yes
Solenoid coil
functional
Motor gives
50 Volts on
white wire?
Motor or
pump
seized?
Check boiler
controls &
supply
No
Lockout
after 12 sec
purge?
Ignition
spark
proved?
No
Eectrodes &
leads OK?
Lockout
within 1
second?
Yes
No
Yes
No
Yes
Yes
No
Replace
electrodes/
leads
Replace
nozzle
Replace
control box
Yes
Replace
control box
Yes
230V to
control box?
No
Burner
motor runs?
Boiler not
operating
with a
heating /
hot water
demand
Yes
Replace
photo cell
No
Photo cell
functional?
No
If BF
remove
burner
snorkle tube
& retest.
Burner OK?
Yes
Flame off &
re-lights?
Yes
Combustion
head set
correctly?
No
Reset
combustion
head
Yes
Yes
No
Replace
control box
Reseal BF
or reposition
terminal
Boiler or flue
blocked
MEASURE ALL 230V
TESTS BETWEEN
NEUTRAL (N) AND THE
PIN, WIRE OR TERMINAL
SPECIFIED.
These fault finding charts are provided to assist competent and suitably qualified engineers to
locate and rectify faults. Whilst every effort has been taken to ensure the information given is
correct and complete we cannot guarantee that every eventuality has been covered.
Worcester, Bosch Group cannot be held responsible for costs incurred by persons not deemed
to be competent.
DIAGNOSTICS FOR
MO535 RDB CONTROL BOX
IMPORTANT: The burner has an 11 second
delay before the motor is activated.
54
This operation instruction is provided to assist competent and suitably qualified engineers to
locate and rectify faults. Whilst every effort has been taken to ensure the information given is
correct and complete we cannot guarantee that every eventuality has been covered.
Worcester, Bosch Group cannot be held responsible for costs incurred by persons not deemed
to be competent.
STATUS
CODE
MO535 RDB
CONTROL BOX OPERATION
ADDITIONAL INFORMATION
Operational Codes
OFF
OFF
Initial check time (11 seconds) before pre-purge
OFF
Pre-purge (15 seconds)
ORANGE Flashing
Safety time (maximum 5 seconds)
GREEN Flashing
Running
Only when the solenoid valve is energized with no flame
signal.
GREEN
Lock-out/Error Codes
False light before ignition
GREEN, RED
Under voltage or over voltage
RED, ORANGE
lock-out for no flame during safety time
RED
Lock-out for false flame signal /
Lock-out for burner control error
RED Flashing
Lock-out for maximum number of restarts
RED Fast flashing
Pump Priming Cycle
Pump priming cycle
GREEN, ORANGE, RED
In the lock-out condition, the oil pump can be primed
for 30 seconds:
1. Press the remote reset button for more than 6 seconds
and then release. The control box lock-out reset will
blink quickly green, orange and red.
2. Re-press the burner reset button and release within
3 seconds and pump priming starts.
FAULT FINDING
& DIAGRAMS
Lock-out and Reset
The control box can be reset consequently a maximum of 5 times after which the power
supply has to be reset; then the control box can be reset a further 5 times.
Limit of Restarts
If the flame is lost during operation; the burner will restart 3 times. On the 4th restart the
burner will go to lock-out. By resetting the power supply the control box is reset and allows
3 restarts.
Flame Detection
Flame detection minimum current:
30µA
Flame loss maximum current:
25µA
False flame maximum current (without false light):
19µA
55
FAULT FINDING
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
OIL BOILER COMBUSTION RECORD
BOILER MODEL
SERIAL No.
COMMISSIONING ENGINEER
COMBUSTION CHECKS
COMPANY NAME:
PUMP PRESSURE (PSI):
ADDRESS:
CO2 %:
ENGINEERS NAME:
SMOKE READING:
F.G.T.°C:
SIGNATURE:
FLUE PRESSURE:
DATE:
BURNER MODEL:
FOR ALL BOILERS CONFIRM THE FOLLOWING
THE CONDENSATE DRAIN HAS BEEN INSTALLED IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS
YES
OIL TYPE USED IS KEROSENE
YES
THE SYSTEM HAS BEEN FLUSHED IN ACCORDANCE WITH THE INSTRUCTIONS?
YES
THE SYSTEM CLEANER USED:
THE INHIBITOR USED:
SERVICE INTERVAL RECORD It is recommended that the heating system is serviced regularly and
that you complete the appropriate Service Interval Record overleaf.
Service Provider. Before completing the appropriate Service Interval Record overleaf, please ensure you have carried out the
service as described in this manual. Always use Worcester, Bosch Group specified spare parts when replacing all controls.
56
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
OIL BOILER
COMBUSTION RECORD
57
SERVICE 1 DATE
SERVICE 2 DATE
ENGINEER NAME
COMPANY NAME
TEL No.
OFTEC REG No.
PUMP PRESSURE:
NOZZLE CHANGED?
F.G.T. °C
COMMENTS
ENGINEER NAME
COMPANY NAME
TEL No.
OFTEC REG No.
PUMP PRESSURE:
NOZZLE CHANGED?
F.G.T. °C
COMMENTS
psi
CO2%:
YES
NO
FLUE PRESSURE:
SIGNATURE
SIGNATURE
SERVICE 3 DATE
SERVICE 4 DATE
ENGINEER NAME
COMPANY NAME
TEL No.
OFTEC REG No.
PUMP PRESSURE:
NOZZLE CHANGED?
F.G.T. °C
COMMENTS
ENGINEER NAME
COMPANY NAME
TEL No.
OFTEC REG No.
PUMP PRESSURE:
NOZZLE CHANGED?
F.G.T. °C
COMMENTS
psi
CO2%:
YES
NO
FLUE PRESSURE:
SIGNATURE
SIGNATURE
SERVICE 5 DATE
SERVICE 6 DATE
ENGINEER NAME
COMPANY NAME
TEL No.
OFTEC REG No.
PUMP PRESSURE:
NOZZLE CHANGED?
F.G.T. °C
COMMENTS
ENGINEER NAME
COMPANY NAME
TEL No.
OFTEC REG No.
PUMP PRESSURE:
NOZZLE CHANGED?
F.G.T. °C
COMMENTS
psi
CO2%:
YES
NO
FLUE PRESSURE:
SIGNATURE
SIGNATURE
SERVICE 7 DATE
SERVICE 8 DATE
ENGINEER NAME
COMPANY NAME
TEL No.
OFTEC REG No.
PUMP PRESSURE:
NOZZLE CHANGED?
F.G.T. °C
COMMENTS
ENGINEER NAME
COMPANY NAME
TEL No.
OFTEC REG No.
PUMP PRESSURE:
NOZZLE CHANGED?
F.G.T. °C
COMMENTS
psi
CO2%:
YES
NO
FLUE PRESSURE:
SIGNATURE
SIGNATURE
SERVICE 9 DATE
SERVICE 10 DATE
ENGINEER NAME
COMPANY NAME
TEL No.
OFTEC REG No.
PUMP PRESSURE:
NOZZLE CHANGED?
F.G.T. °C
COMMENTS
ENGINEER NAME
COMPANY NAME
TEL No.
OFTEC REG No.
PUMP PRESSURE:
NOZZLE CHANGED?
F.G.T. °C
COMMENTS
SIGNATURE
psi
CO2%:
YES
NO
FLUE PRESSURE:
SIGNATURE
psi
CO2%:
YES
NO
FLUE PRESSURE:
psi
CO2%:
YES
NO
FLUE PRESSURE:
psi
CO2%:
YES
NO
FLUE PRESSURE:
psi
CO2%:
YES
NO
FLUE PRESSURE:
psi
CO2%:
YES
NO
FLUE PRESSURE:
NOTES
NOTES
58
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR WALL MOUNTED OIL 12/18-18/25
8 718 681 134a (08.08)
NOTES
In the unlikely event the boiler does not give
complete satisfaction, before calling for a
service engineer, the installer should check
the following:General checks
1. Is there 230V across the boiler live and neutral terminals?
2. Is the polarity correct? (230V across live and earth, 0V across neutral and earth)
2. Is the air bled from the primary system?
3. Is the air bled from the oil supply?
4. Is the flue sized and routed correctly?
Boiler runs straight to lockout
1. Has the oil line been purged of air?
2. Where an air eliminator is used in conjunction with a top feed oil tank
the non-return valve, (if fitted), should be removed from the oil dip pipe.
Boiler locks out at the start of a demand
(Heating off overnight for example)
1. If an air eliminator is being used, check that there are no leaks that allow
air to be pulled into the oil supply.
2. If a two pipe oil supply is a being used, has a non-return valve
been fitted to the inlet pipe? Refer to the instructions for guidelines.
CONTACT INFORMATION
No domestic hot water
1. Is there a domestic hot water demand from the programmer and has the
tank reached temperature?
2. Is the circulating pump operating?
3. Are the programmer, tank thermostat, circulating pump and diverter
valve/zone valves wired correctly?
4. Is there 230V across L and N? If not there is no demand to the
boiler from the controls or the controls wiring is not correct.
No central heating
1. Are both programmer and room thermostat on demand for central heating?
2. Are the room thermostat, programmer, circulating pump and diverter
valve/zone valves (if CH and DHW system) wired correctly?
3. Is the circulating pump operating?
4. Is there 230V across L and N? If not there is no demand to the
boiler from the controls or the controls wiring is not correct.
EXCELLENCE COMES AS STANDARD
Worcester, Bosch Group
Cotswold Way, Warndon, Worcester WR4 9SW.
Tel. 01905 754624 Fax. 01905 754619
Worcester, Bosch Group is a trading name of
Bosch Thermotechnology Ltd.
www.worcester-bosch.co.uk
8 718 681 134a (08.08)
WORCESTER, BOSCH GROUP:
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:
FERNOX
01799 550811
www.fernox.com
SENTINEL
0151 420 9595
www.betzdearborn.com/sentinel
FLUE TERMINAL GUARD:
PART No. 7 716 190 050