Maintaining Your Appliance; Benchmark Standard; Prepare For Operation; Open Vented Heating System - Worcester Greenstar 8000 Life User Instructions

Prepare for operation

▶ Ensure that the service engineer completes the Service Record, at
the rear of the Installation and Maintenance Instructions manual,
after each service.
▶ Have any work carried out by a competent, qualified person,
Worcester service engineer, British Gas engineer or other Gas Safe
registered engineer. In the Republic of Ireland servicing work must be
carried out by a Worcester service engineer or other Registered Gas
Installer (RGII).
▶ Always use original spares, to help maintain the efficiency, safety and
reliability of the appliance.
2.3

Maintaining your appliance

Your new appliance represents a long term investment in a reliable, high
quality product.
Wipe the appliance casing with a soft clean cloth. Please do not use
chemical cleaning products which may damage the paint finish.
In order to realise the appliance's maximum working life, and to ensure
the appliance 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 engineer in accordance with the current
Gas Safe Regulations.
If you would like to know more about servicing options from Worcester,
Bosch Group, please visit 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 rear cover, appointments).
In addition to the service contract we are pleased to offer a one-off
annual service or breakdown call out for your appliance.
Maintenance tips
• Appliances on a sealed heating system:
– Regularly check the system pressure.
• Do not obstruct the flue outlet or the air inlet.
• Use in hard water areas:
– In exceptionally hard water areas a device to prevent scale
formation may be fitted. Installation of a salt based water softener
should be in accordance with the requirements of the local water
company. A bypass valve must be fitted and used to fill/top up the
heating system with untreated water.
Important note:
▶ If you have to add water regularly in your heating system, call a
competent, qualified person.
6
2.4

Benchmark standard

The Benchmark initiative is a code of practice
to encourage the correct installation,
commissioning and servicing of domestic
central heating appliances and system
equipment.
A "checklist" is dispatched with every appliance and can be found
towards the back of the Installation, Commissioning and Servicing
Instructions. This is a vital document that needs to be completed by the
installer at the time of installation. It confirms that the appliance has
been installed and commissioned according to the manufacturer's
instructions.
The service record provides space for the recording of regular servicing
of the appliance/heating system and this can become a valuable
document when, for example, you wish to sell the property. The service
record will show a potential purchaser that the heating system has
received regular professional maintenance and servicing during its
lifetime.
The Benchmark initiative aims to:
• Raise standards among professional installers.
• Build and maintain high safety standards in the industry.
• Improve customer satisfaction levels.
• Make a contribution to the nation's commitment to climate change.
3 Prepare for operation
3.1

Open vented heating system

Appliances that can be connected to open vented heating systems will
have the pressure maintained automatically by the header cylinder
feeding the system.
3.2

Sealed heating system

Appliances that can be connected to sealed heating systems are pre-
pressurised before operation, this pressure must be maintained for safe
use of the appliance.
▶ Check regularly that the pressure is maintained.
▶ Re-charge the system if the external pressure gauge less than 1 bar.
▶ If a permanent significant decrease or increase in pressure is
indicated, contact your installer or maintenance engineer.
3.2.1

Constantly re-pressurising the system

Constantly having to re-pressurise the heating system should be
investigated as it is an indicator of potential leaks and the concentration
of inhibitor protection in the system will be reduced; this can result in
corrosion within the heating system, reducing efficiency and increasing
contaminates.
▶ Check for leaks on heating system (pipework and radiator valves).
▶ Contact your installer or maintenance engineer if a recurring
significant decrease or increase in pressure is indicated on the
pressure screen.
System pressure increasing:
▶ If the system pressure repeatedly increases and you need to vent air
from the radiators, refer to  section 3.3 "Topping up the system
pressure", page 7.
Greenstar 8000 Life – 6720883873 (2021/05)