Technical data

21
Flushing the system
•
Fill the system with cold water and check for leaks
•
Open all drain cocks and drain the system
•
Close drain cocks and add a suitable flushing agent
compatible with aluminium at the correct strength
for the system conditions and in accordance with the
manufacturer‘s instructions.
The pH value of the system water must be in line with
BS 7593.
•
Circulate the flushing agent before the system
is connected
•
Run the system at normal operating temperature as
directed by the manufacturer of the flushing agent
•
Drain and thoroughly flush the system to remove the
flushing agent and debris
•
It may be necessary to use a power flushing machine to
aid the cleansing procedure in some circumstances
•
Close the drain cocks and refill with fresh water and a
suitable inhibitor
•
Vent any air from the boiler and system
•
Clean the particle filter.
Filling the heating system
First flush the heating system. If the water heater is
connected to the system, it must be filled with clean water.
The heating system is then filled.
Filling the heating system with clean water
Worcester recommends fitting the Greenstar System Filter
to help ensure that the heating system can perform at its
optimum level.
•
Set the pre-pressure for the expansion vessel in the
premises according to the heating unit's static height
•
Open the heating system's valves
•
Top up the heating water in the system and fill system to
appropriate operating pressure
•
Vent the heating system by opening the shut off valve.
This may have to be repeated a couple of times and
is very important to ensure the correct operation of
the system
•
Also bleed via the heating system's other bleed valves
(e.g. radiators)
•
Refill to the correct pressure. Normal pressure is
1.0-2.5bar, but depends on the expansion vessel's
pre-pressure and the height of the building
•
Shut the heating water filling valve when the correct
pressure is reached.
Inhibitor
If the system is exposed to freezing conditions, add a
suitable inhibitor or combined inhibitor/anti-freeze in
accordance with the manufacturer's guidelines.
The Worcester Greenstar
System Filter
Modern boilers and heat pumps are precision engineered
and designed to run with a clean water-heating system.
Over time, dirty system water will develop, damaging the
system and its components, causing failures, shortening
the life of the overall system and dramatically reducing
its efficiency.
A highly effective solution
The Worcester Greenstar System Filter has been specifically
designed to combat the damaging effects of system debris
and pollutants, protecting the system for a fraction of its cost.
At the centre of its innovative design is a powerful magnet
that removes the magnetic debris that is present in the
heating system water. The central location of the magnet
ensures that the debris is collected quickly and retained.
Any non-magnetic debris is caught by the twin-action
cyclonic trap, maximising overall protection.
Greenstar System Filter features and benefits:
•
Highly effective – safeguards the system against damage
and can save up to 6% a year on energy bills*
•
Prevents blockages in radiators – a warmer home and
quieter system
•
Twin action – effective against magnetic and non-magnetic
system debris.
Commissioning considerations –
system flushing and care
The filter can be
fitted under or away
from the boiler and
heat pump.
NEW
*Independent research.
Product info
Part number 7 716 192 609