GREENSTAR HEATSLAVE
12/18, 18/25, 25/32kW
FLOOR STANDING OIL FIRED CONDENSING COMBINATION BOILER
CONVENTIONAL FLUE & ROOM SEALED FLUE
FOR OPEN VENT AND SEALED CENTRAL HEATING SYSTEMS WITH DOMESTIC MAINS
FED HOT WATER
THE APPLIANCE IS FOR USE WITH KEROSENE
(28 SECOND OIL) ONLY
GB
USER INSTRUCTIONS
& CUSTOMER CARE GUIDE
CONTACT INFORMATION
USER INSTRUCTIONS &
CUSTOMER CARE GUIDE
Worcester, Bosch Group:
PLEASE READ THESE INSTRUCTIONS
CAREFULLY BEFORE OPERATING YOUR
APPLIANCE.
Service call centres:
UK
TEL: 08457 256206
FAX: 08457 757536
SCOTLAND ONLY FAX: 01506 441687
Other enquiries:
TEL:
MAIN RECEPTION: 01905 754624
TECHNICAL:
08705 266241
LITERATURE:
01905 752556
SALES:
01905 752640
WEBSITE:
FAX:
754619
www.worcester-bosch.co.uk
WATER TREATMENT:
THESE INSTRUCTIONS ARE APPLICABLE
TO THE WORCESTER, BOSCH GROUP
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.
IF YOU ARE IN ANY DOUBT CONTACT THE
WORCESTER, BOSCH GROUP TECHNICAL
HELPLINE.
PLEASE KEEP THESE INSTRUCTIONS WITH
THE INSTALLATION AND SERVICING
INSTRUCTIONS IN A SAFE PLACE OR WITH
THE APPLIANCE AFTER INSTALLATION OR
SERVICING.
DO NOT INTERFERE WITH ANY SEALED
COMPONENTS.
FERNOX 01799 550811
www.fernox.com
SENTINEL 0151 420 9595
ABBREVIATIONS:
www.betzdearborn.com/sentinel
SEDBUK Seasonal Efficiency for Domestic
Boilers in the United Kingdom.
FLUE TERMINAL GUARDS:
OFTEC Oil Firing Technical Association for the
Petroleum Industry.
WORCESTER, BOSCH GROUP
OIL FIRING TECHNICAL ASSOCIATION:
OFTEC 0845 6585080
www.oftec.org
USER INSTRUCTIONS &
CUSTOMER CARE GUIDE
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
INTRODUCTION
CONTENTS
ENERGY SAVING
TIPS ON ENERGY SAVING
USING YOUR
APPLIANCE
4-6
7
ENERGY
SAVING
8
8
8
9
9
10
11
12
13
MAINTENANCE
USING YOUR APPLIANCE
CONTROLS
OPERATING THE APPLIANCE
Switching the boiler on/off
Setting the heating temperature
Controlling central heating
Setting the hot water temperature
Frost protection
Pressure gauge
Filling loop
Fault conditions 12/18 and 18/25 models
Fault conditions 25/32 model
2
3
14-15
16
17
18
GUARANTEE
YOUR GUARANTEE
GUARANTEE REGISTRATION
19
20
NOTES
MAINTENANCE
MAINTAINING YOUR APPLIANCE
FAULT FINDING
FAULT OR BREAKDOWN
GUARANTEE
INTRODUCTION
SAFETY PRECAUTIONS
EXCELLENCE COMES AS STANDARD
GENERAL INFORMATION
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
CONTENTS
1
INTRODUCTION
SAFETY PRECAUTIONS
OIL SMELLS, LEAKS OR FUMES FROM THE
APPLIANCE:
Extinguish any naked flames.
Open windows and doors.
Switch off the appliance electricity supply.
Isolate the fuel supply to the boiler.
Contact installer/service engineer.
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 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:
You must have the system regularly
serviced by a competent, qualified OFTEC
registered engineer using approved spares,
to help maintain the economy, safety and
reliability of the appliance.
The appliance should be serviced once each
year after installation unless the installation
conditions and usage demand more frequent
services.
DO NOT OPERATE THE APPLIANCE WHEN:
The appliance, flue or system is incorrectly
fitted, faulty or damaged.
The flue terminal outlet fitted on the outside
wall or roof is obstructed or damaged.
There are fumes, fuel leaks or fuel smells
from the fuel supply, appliance or flue system.
The system is empty, frozen or unpressurised
(sealed systems).
The condensate pipe is blocked or restricted.
The appliance clearances are inadequate.
The air supply is restricted or vents damaged.
2
EXCELLENCE COMES AS STANDARD
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
Thank you for purchasing a Greenstar oil fired
condensing boiler from Worcester, Bosch
Group. The company prides itself on
manufacturing boilers to the strictest quality
control standards throughout every stage of
production.
INTRODUCTION
EXCELLENCE COMES AS
STANDARD
Worcester, Bosch Group has led the field in
innovative appliance design and performance for
more than 40 years. This heritage means all
products are of exceptional quality and proven
reliability.
The condensing range in particular, is extremely
energy efficient, converting more of the fuel
consumed into heat offering you economical
running costs and value for money. It sits in
SEBUK band A, at the top of the energy rated
appliances available.
There is also the assurance of our no-nonsense
parts and labour guarantee - backed up by an
optional servicing and maintenance contract to
keep your boiler operating at peak condition and
efficiency.
To find out more about Worcester, Bosch
Group, use the 'Contact Information' shown on
the inside front cover.
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
EXCELLENCE COMES AS STANDARD
3
INTRODUCTION
GENERAL INFORMATION
Read these instructions carefully to get the best
from your appliance.
CENTRAL HEATING SYSTEMS:
During the first few hours of operation of the
central heating system, check that all radiators
are being heated at an even rate.
If the top of a radiator is at a lower temperature
than the bottom then it should be vented by
releasing air through the venting screw at the top
of the radiator. Ask your installer to show you
how this is done. Repeated venting will reduce
the quantity of water in the system and this must
be replenished for safe and satisfactory
operation of the appliance.
When excessive venting or water leaks are found
in the system you must contact a service
engineer to inspect the installation and rectify
any fault.
Only use additives compatible with the appliance
and system. Use of incompatible additives can
cause damage and will invalidate the appliance
guarantee.
Sealed heating systems:
Where the appliance is fitted to a sealed heating
system your installer will inform you of the
minimum and maximum pressure which must be
indicated on the pressure gauge.
Regularly check the pressure is maintained and
contact your installer or maintenance engineer if
there is a noticeable, permanent drop in
pressure. If the system loses pressure it should
be repressurised and the cause of the loss
investigated.
CONDENSATE:
This is a high efficiency appliance using
condensing technology which will under normal
operation produce a regular discharge of
condensate to drain and at times, give out a
plume of water vapour from the flue terminal.
4
GENERAL INFORMATION
ROOM THERMOSTAT:
A room temperature controller must be fitted to
control the central heating. Refer to instructions
supplied with the thermostat for information on
siting and setting.
THERMOSTATIC RADIATOR VALVES:
It is recommended that this type of valve is fitted
to all but one of the radiators (or at least those in
the sleeping accommodation). The remaining
radiator, which must be where the room
thermostat is located, should be un-controlled
and must be left open.
SHOWERS, BIDETS, TAPS/MIXING VALVES:
Standard hot and cold taps and mixing valves
must be suitable for operating at the water mains
supply pressure. Only thermostatically controlled
showers are suitable for use with this appliance.
Hot and cold mains fed water can be supplied
directly to an over-rim flushing bidet subject to
local water company requirements.
WATER FLOW:
With all mains fed systems the flow of water
from individual taps will vary with the number of
outlets operated simultaneously and the cold
water supply pressure to the property. Flow
balancing using 'ball-o-fix' type valves is
recommended to avoid an excessive reduction in
flow to individual outlets.
The flow of water demanded from both hot and
cold service outlets is dependent on the mains
water supply, it may not be possible in some
installations to operate all outlets simultaneously.
MAINS WATER FAILURE:
Central heating:
The appliance will operate in central heating mode.
Hot water will not be available until the water
supply is restored.
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
USE IN HARD WATER AREAS:
In exceptionally hard water areas a device to
prevent scale formation may be fitted. Installation
of a scale inhibitor assembly should be in
accordance with the requirements of the local
water company. An isolating valve should be
fitted to allow for servicing.
INTRODUCTION
GENERAL INFORMATION
CIRCULATING PUMP:
The pump is pre-set and must not be adjusted.
BOILER LOCATION:
This boiler is only suitable for installing internally
within a property at a suitable location onto a
fixed rigid non-combustible surface at least the
same size as the boiler and capable of
supporting the boiler weight.
Roof space installations must fully conform to
BS 5410 part 1 section 4.6.9.
SERVICE CLEARANCES
1200mm
530mm
1155mm
300mm**
**The boiler can be installed under a worktop as
long as:
The worktop above the boiler is removable
for maintenance.
There is at least 10mm clearance above the
boiler.
The front of the boiler is not enclosed.
5mm*
5mm*
600mm
The boiler is not suitable for external installation
unless a suitable enclosure is provided.
VENTILATION:
Air vents must be functional at all times and the
air supply must not be restricted or
contaminated.
The appliance clearances must meet the
minimum shown opposite for servicing and
venting purposes.
* If this clearance is less than 75mm the flue
'knock-out' panel sections must be removed to
improve air circulation and cooling.
Do not place clothes or objects to hinder the air
circulation required by the appliance.
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
GENERAL INFORMATION
5
INTRODUCTION
GENERAL INFORMATION
Conventional flued appliances:
Minimum area of of air inlet for combustion:
Area (cm )
kW
2
12/18
99
18/25
138
25/32
176
Conventional flue appliances require an
adequate supply of fresh air which must be
delivered to the boiler for combustion purposes
through a permanent inlet, such as an air brick,
into the area where the boiler is situated.
If a cupboard or compartment which is to be
used for storage or airing is built around the
appliance after installation there must be a
non-combustible partition around the boiler.
Further information can be found in BS 5410
which also describes venting requirements.
Venting compartments:
Ventilation must be provided for boilers fitted
into compartments as described in BS 5410
A minimum of 2 air vents must be fitted, one
at low level and another at high level onto
the same wall using the same air for
circulation.
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
kW
High
Level
Low
Level
12/18
198
279
External2 ventilation
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.
High
Level
Low
Level
Low level air vents must be less than
450mm from the floor.
99
198
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''.
18/25
275
413
138
275
25/32
352
528
176
352
Room Sealed flue:
Internal1ventilation
6
kW
High
Level
Low
Level
External2 ventilation
High
Level
Low
Level
12/18
198
198
99
99
18/25
275
275
138
138
25/32
352
352
176
176
GENERAL INFORMATION
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
A
B
C
D
E
F
OFF
TIMED
ONCE
ON
OFF
TIMED
ONCE
ON
HOT WATER
bar
ADVANCE SET ?
SELECT
G
H
J
K
CENTRAL HEATING
YES
A
Hot water temperature control.
B
Central heating temperature control.
C
Lock-out indicator.
D
Power on indicator.
E
Heating system water pressure gauge.
F
Optional programmer (see instructions
supplied with programmer for details).
ADVANCE
SELECT
L
G Reset button - lock-out (behind front
panel)* for 12/18 and 18/25 models only.
*On the 25/32 model the reset is
accessed by removing the top panel on
the appliance and pressing the reset
button on the control box of the burner
(see diagram below).
H
Reset button - flue thermostat (behind
front panel).
J
Reset button - heating (behind front
panel).
K
Holder for User Guide.
L
Front panel.
USING YOUR
APPLIANCE
CONTROLS
Lockout reset button locations
25/32 Model
Remove top panel to access Burner
Reset Button (A).
12/18 and 18/25 Models
Remove front panel (pull bottom of
panel out and lift to remove) to
access Burner Reset Button (A)
Thermostat Reset Buttons (B and
C) are common to all models.
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
CONTROLS
7
OPERATING THE APPLIANCE
SWITCHING THE BOILER ON/OFF:
To switch on the boiler; turn on the water,
oil and electricity supply to the boiler.
USING YOUR
APPLIANCE
Check the programmer/timer is correct and
it is set to ON.
Set the room thermostat to the desired
setting.
Open and set thermostatic radiator valves as
required.
Turn the boiler water temperature control to
the required setting.
To switch off the boiler; turn the
programmer/timer to OFF for heating and
hot water. If the appliance is left unused and
exposed to freezing conditions; shut off all
the mains supplies, isolate the boiler and
drain the system and boiler.
CENTRAL HEATING TEMPERATURE CONTROL:
SETTING HEATING TEMPERATURE:
Turn the control clockwise to increase the
water temperature.
Turn the control anti-clockwise to reduce the
water temperature.
The minimum and maximum ranges of the
heating control positions are approx. 55°C to
81°C.
CONTROLLING CENTRAL HEATING:
Set the programmer/timer to the correct time
with the required ON/OFF periods.
Turn the room thermostat to the temperature
required.
Set thermostatic radiator valves to the
required temperature for each room.
8
OPERATING THE APPLIANCE
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
OPERATING THE APPLIANCE
HOT WATER TEMPERATURE CONTROL:
SETTING THE HOT WATER TEMPERATURE:
Turn the control anti-clockwise to reduce the
water temperature.
A high setting will give a higher hot water
temperature and greater quantities of hot water.
WARNING: care should be taken when
washing your hands as the combination
of low water flow rate and high setting of
the hot water control thermostat can
result in very hot water at the tap.
USING YOUR
APPLIANCE
Turn the control clockwise to increase the
water temperature.
FROST PROTECTION:
A frost thermostat can be wired into the
appliance.
Frost protection should be fitted to the
system where the system is most exposed
and at risk of freezing.
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
OPERATING THE APPLIANCE
9
OPERATING THE APPLIANCE
PRESSURE GAUGE:
USING YOUR
APPLIANCE
The pressure gauge indicates the boiler/heating
system water pressure and has two pointers:
2
3
1
4
0
bar
Sealed System pressure when
boiler is operating CH
Red (external) pointer is set manually to indicate
the normal system pressure (1 to 1.5 bar for
sealed systems, 0 to 0.5 bar for open vent
systems).
Grey (internal) pointer shows the actual system
pressure (on sealed systems the pressure will
rise when the boiler/system heats up from cold).
Please check with your installer what type of
system you have.
On sealed systems the red pointer should be set
to the normal operating pressure (1 to 1.5 bar)
and the grey ponter will fluctuate around this
pressure depending on whether the system is
hot or cold. If a sealed system pressure drops
below 1 bar the system should be repressurised
to between 1 and 1.5 bar and the cause of the
drop investigated. If the pressure rises to more
than 2.5 bar please contact your installer for
advice.
Regularly check that the pressure is maintained
and contact your installer or maintenance
engineer if a permanent significant drop in
pressure occurs.
On open vent systems the pressure gauge is not
used and the grey needle will remain at the
bottom of its scale. If the presure rises to more
than 1 bar please contact your installer for
advice.
10
OPERATING THE APPLIANCE
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
OPERATING THE APPLIANCE
A filling loop is a set of manually operated valves
and a flexible pipe that allow water to be added
to the system when the valves are opened. This
device must be WRAS approved. To comply with
local water authority by-laws the flexible pipe
should only be connected when topping up the
system and disconnected when not in use.
Should the sealed system pressure within your
system have dropped to below 0.5 bar (shown
on the pressure gauge) you will need to increase
this to ensure your boiler continues to run
without problems.
Your installer should have informed you where
to find the filling system and instructed you in
its use.
USING YOUR
APPLIANCE
FILLING LOOP: Sealed systems only
Should this have been overlooked you can
increase the pressure by following these
instructions:
1. The boilers integral pressure gauge should be
visible from the filling link.
2. Connect the flexible hose across the two
valves, one leading from the boiler and the other
from the mains supply. The connecting nuts need
only to be hand tight.
3. Slowly open both valves ensuring that water
does not leak from either end of the flexible
hose.
4. You will start to hear water passing across the
hose and valves and the grey needle on the
pressure guage will rise.
5. When the needle rises between 1 and 1.5 bar
close both valves, the needle should now remain
fixed.
6. The hose should then be disconnected from
at least one valve, a small amount of water will
emit from the hose, this is normal. If water
continues to issue from the hose the valve has
not been fully closed or is passing. If it is
passing you will need to contact your installer to
resolve the problem.
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
OPERATING THE APPLIANCE
11
OPERATING THE APPLIANCE
(1) NORMAL OPERATION:
FAULT CONDITIONS: 12/18 AND 18/25
MODELS
The Power on and Lockout lights can indicate
some basic fault conditions.
USING YOUR
APPLIANCE
(1) Normal operation:
Light ON
Mains power supply to boiler.
(2) Both lights on:
(2) BOTH LIGHTS ON:
Boiler not firing
Check the level in the oil tank.
Remove the front white panel on the
appliance (see E below) and press the
Reset button (G). The boiler should fire.
If there is no response, wait 2 minutes and
press the Reset Button (G) again.
H
H
G
(3) POWER ON LIGHT ON LOCKOUT LIGHT OFF:
If Lockout light stays on, do not attempt
further resets. Contact your service
engineer for advice.
(3) Power on light on, lockout light off:
Boiler not on No heating/hot water
Check the programmer is set to ON and
roomstat is calling for heat.
G
G
H
Press Reset Button (H), press Reset Button
(J) both are below the fascia, behind the
front white panel (see E below).
JJ
If the boiler remains off, contact your service
engineer for advice.
(4) Both lights off:
Boiler not on No heating/hot water
(5) ACCESSING RESET BUTTONS:
Ensure there is power supply to the boiler.
If there is power supply to the boiler contact
your service engineer for advice.
(5) Accessing Reset Buttons:
JJ
H
H
G
12
OPERATING THE APPLIANCE
G
H
G
To access the Reset Buttons pull
the bottom of the front white panel and lift to
remove.
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
OPERATING THE APPLIANCE
(1) NORMAL OPERATION:
FAULT CONDITIONS: 25/32 MODEL
The Power on and Lockout lights can indicate
some basic fault conditions”
Light ON
Mains power supply to boiler.
(2) Both lights on:
Boiler not firing
(2) BOTH LIGHTS ON:
USING YOUR
APPLIANCE
(1) Normal operation:
Check the level in the oil tank.
Remove the top panel on the appliance and
press the Reset button (A) on the control
box of the burner (see E below).
If there is no response, wait 2 minutes and
press the Reset Button (A) again.
If Lockout light stays on, do not attempt
further resets. Contact your service
engineer for advice.
(3) Power on light on lockout light off:
(3) POWER ON LIGHT ON LOCKOUT LIGHT OFF:
Boiler not on No heating/hot water
Check the programmer is set to ON and
roomstat is calling for heat.
Press Reset Button (B), press Reset Button
(C) both are below the fascia, behind the
front white panel (see E below).
If the boiler remains off, contact your service
engineer for advice.
(4) Both lights off:
(5) ACCESSING RESET BUTTONS:
Boiler not on No heating/hot water
Ensure there is power supply to the boiler.
If there is power supply to the boiler contact
your service engineer for advice.
(5) Accessing Reset Buttons:
To access the Reset Button (A) remove top
panel.
To access Reset Buttons (B) and (C) pull
the bottom of the front white panel and lift to
remove.
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
OPERATING THE APPLIANCE
13
TIPS ON ENERGY SAVING
Heating economically:
The boiler is designed to provide a high level of
comfort while keeping oil consumption and the
resulting environmental effect as low as possible.
The central heating control on the boiler should
be set as low as possible while still maintaining a
comfortable room temperature.
ENERGY
SAVING
The temperature of each room can be set
individually using the thermostatic radiator valves
(except the primary room with the room
thermostat).
Roof insulation:
Around 30% of the heat loss from a property is
through the roof. Replace any old insulation with
new insulation, preferably to a minimum
thickness of 200mm.
Window frames:
Single glazed windows, particularly those with
steel frames, can lose a great deal of heat.
Consideration should be given to replacement
with PVCu or wooden framed double glazed
units.
Curtains:
Lined curtains, or heavier full length curtains can
provide excellent insulation. However, always
ensure that the curtains do not drape over
radiators.
Draughts:
Try to ensure that draughts around doors,
windows, letterboxes and keyholes etc., are
reduced by using a suitable draught excluder.
Warning: do not block or seal any air vents
that are installed to ensure the central
heating boiler (or other appliance) operate
safely.
14
TIPS ON ENERGY SAVING
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
TIPS ON ENERGY SAVING
Room thermostats:
Reducing the setting of the room thermostat by
1°C can reduce fuel consumption by up to 10%.
New control systems:
Upgrade your heating control system with the
latest equipment available. The minimum level of
control for a heating system is a programmer,
interlocking room thermostat and thermostatic
radiator valves.
More often than not radiators will be sited
underneath a window, so the warm air from the
radiator heats the colder incoming air from the
window.
ENERGY
SAVING
Radiators:
The performance of the radiator will be affected
if the curtains are allowed to drape over the
radiator or shelves are fitted above it.
The positioning of furniture and tables in front of
the radiator should also be avoided.
It is advisable to manually adjust all radiator
valves every 2-3 months to prevent them from
sticking. It is also important that the plastic tops
of all valves are always in position and not
cracked or damaged to help prevent accidents.
Care should be taken when vacuum cleaning
carpets to avoid damage to valves and pipework.
The heating system and the outputs of the
radiators have been carefully selected by your
installer. The temperature obtainable in any given
room is dependent on all radiators being
operated at the same time. If you decide to turn
off radiators in unused rooms, spare bedrooms
etc., you may experience slightly lower room
temperatures in rooms adjacent to unheated
rooms.
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
TIPS ON ENERGY SAVING
15
MAINTAINING YOUR APPLIANCE
Your new appliance represents a long term
investment in a reliable, high quality product.
In order to realise its maximum working life and
to ensure it continues to operate at peak
efficiency and performance, it is essential that
servicing and maintenance checks are performed
at least once a year by a competent person.
If you would like to know more about sevicing
options from Worcester, Bosch Group, please
visit www. worcester-bosch.co.uk. Please tick
the appropriate box on your warranty registration
card for further details of the Worcester, Bosch
Group Service Contract .
When your appliance requires servicing please
contact a Worcester, Bosch Group contact
centre (see inside front cover for details).
MAINTENANCE
In addition to the service contract we are
pleased to offer a one-off annual service or
breakdown cover.
Maintenance tips:
Regularly check the oil level in the tank.
Regularly check the system pressure, ask your
installer for guidance.
Do not obstruct the flue outlet or the air inlet.
16
MAINTAINING YOUR APPLIANCE
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
Problem
Cause
Remedy
Desired room temperature
is not reached
Thermostatic radiator
valve(s) set too low
Increase thermostatic
radiator valve setting(s)
Room thermostat set too
low
Increase room thermostat
setting
Temperature control for
CH flow on boiler set too
low
Increase CH flow
temperature control
setting
Air trapped in heating
system
Bleed radiators, if fitted to
a sealed system recharge
heating system
Desired room temperature
exceeded by large amount
Radiators are too hot
Turn down thermostatic
radiator valves / room stat
Temperature rises instead
of falling
Clock is incorrectly set
Check setting
No display or display unit
does not respond
Momentary power failure
Switch off appliance at
master switch, wait a few
seconds then switch on
again
Hot water temperature too
low
Hot water temperature set
too low
Check setting
Hot water not in timed
period on the programmer
Check programmer
settings
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FAULT FINDING
MAINTENANCE
FAULT FINDING
17
FAULT OR BREAKDOWN
This appliance is supported in the UK by
Worcester, Bosch Group, part of BBT
Thermotechnology UK Ltd.
Specialist factory trained Service Engineers are
available to attend in the unlikely event that a
breakdown occurs on this appliance.
MAINTENANCE
No charge will be made for parts and/or
labour providing:
An appliance fault is found and the
appliance has been installed within the past
24 months. Reasonable evidence of this
must be supplied on request
A call-out charge will be made where:
The appliance has been installed for over 24
months. OR
Our Field Service Engineer finds no fault
with the appliance (see Note). OR
Evidence cannot be provided that the first
year service inspection has been carried out.
(i.e. an entry in the service interval record
found at the rear of the appliance installation
and servicing manual). OR
The cause of breakdown is misuse or with
other parts of your plumbing/heating system,
or with equipment not supplied by BBT
Thermotechnology UK Ltd.
days (excluding weekends) for priority
breakdown situations (no hot water and/or
heating).
Invoices for attendance and repair work carried
out on this appliance by any third party will not
be accepted.
APPLIANCE DATA LABEL
The data label can be found on the inside of the
appliance on top of the control box.
To access:
Lift top panel to release lugs.
To replace top panel:
Replace the top panel and gently push down
(from the edges so as not to damage the
panel) until it clips back into place.
APPLIANCE
DATA LABEL
Note: NO APPLIANCE FAULT IS FOUND ON
OVER 30% OF ALL SERVICE CALL OUTS.
Please read this guide carefully to gain a good
understanding of the operation of your appliance.
In the case of a suspected fault, refer to the fault
finding section of this guide.
If in doubt contact Worcester, Bosch Group
quoting the boiler serial and model number.
These numbers are printed on a Data Label
which is located as shown opposite. (You can
record this information on the inside back cover
of this manual.)
In the unlikely event of an appliance fault or
breakdown please call the contact centre (see
inside front cover for details). Your service
administrator will arrange for an Engineer to call
with the minimum of delay. Under normal
circumstances this will be from 1 to 3 working
18
FAULT OR BREAKDOWN
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YOUR GUARANTEE
This appliance is guaranteed against faulty
materials or workmanship for a period of 24
calendar months (60 months for the primary heat
exchanger) from the date of installation subject
to the following conditions:
That during the period of this guarantee any
components of the unit which are proved to
be faulty or defective in manufacture will be
exchanged or repaired free of material
charges and free of labour charges if
repaired directly by BBT Thermotechnology
UK Ltd. Please be aware that invoices
for attendance and repair of this
appliance by third parties will not be
accepted for payment by BBT
Thermotechnology UK Ltd.
That any product or part thereof returned for
servicing under the guarantee must be
accompanied by a claim stating the Model,
Serial Number and Date of Installation.
That BBT Thermotechnology UK Ltd will not
accept responsibility for damage caused by
faulty installation, neglect, misuse or
accidental damage and non-observance of
the instructions contained in the Installation
and Users Instructions leaflets.
GUARANTEE
That the householder may be asked to
prove, when requested, the date of
installation, that the appliance was correctly
commissioned and, where appropriate, that
the 12 month service inspection has been
carried out to the satisfaction of BBT
Thermotechnology UK Ltd, when requested.
The guarantee card must then be returned
within 30 days of installation.
That the appliance has been used only for
normal domestic purposes, for which it was
designed.
That this guarantee applies only to
equipment purchased and used in mainland
Great Britain.
This guarantee is given in addition to all your
normal statutory rights.
Worcester, Bosch Group is a trading name of
BBT Thermotechnology UK Ltd.
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YOUR GUARANTEE
19
GUARANTEE REGISTRATION
You should complete and return the postpaid
Guarantee Registration Card within 30 days of
installation.
Returning your card will register you as the
owner of your new appliance and will assist us in
maintaining an effective and efficient customer
service by establishing a reference and
permanent record for your boiler.
This does not affect your statutory rights.
GUARANTEE
For your own record:
Model
Serial No.
(See identity label inside appliance casing)
Type / size
Date of installation
Installer details
20
GUARANTEE REGISTRATION
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NOTES
NOTES
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8 716 106 253c (11.07)
NOTES
19
If in the unlikely event the boiler fails to
give complete satisfaction, please check
the following before calling for a service
engineer:General checks
1. Oil level in the tank
2. Power to the boiler
3. All control settings
3. The system pressure is appropriate for your system
(see page 10)
CONTACT INFORMATION
Worcester, Bosch Group:
Service call centres:
UK
TEL: 08457 256206
FAX: 08457 757536
SCOTLAND ONLY FAX: 01506 441687
Other enquiries:
TEL:
MAIN RECEPTION: 01905 754624
TECHNICAL:
LITERATURE:
01905 752556
SALES:
01905 752640
WEBSITE:
USER INSTRUCTIONS &
CUSTOMER CARE GUIDE
EXCELLENCE COMES AS STANDARD
Worcester, Bosch Group
Cotswold Way, Warndon, Worcester WR4 9SW.
Tel. 01905 754624 Fax. 01905 754619
www.worcester-bosch.co.uk
Worcester, Bosch Group is a trading name of BBT Thermotechnology UK Ltd.
8 716 106 253c (11.07)
08705 266241
www.worcester-bosch.co.uk