CLEANING PRIMARY SYSTEMS
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR Ri
8 716 115 168a (06/2008)
6
PRE -
INSTALLATION
IMPORTANT: Debris from the system can
damage the boiler and reduce efficiency.
Failure to comply with the guidelines for
the use of water treatment with the appli-
ance will invalidate the appliance warranty.
BEFORE CLEANING THE SYSTEM:
ENSURE THE SYSTEM AND PIPEWORK
IS IN GOOD WORKING ORDER
KEEP THE EXISTING BOILER/
CIRCULATING PUMP WHERE POSSIBLE
OR USE A POWER FLUSHING MACHINE
TO AID THE CLEANSING PROCEDURE
BEFORE INSTALLING A NEW BOILER.
CLEANING THE PRIMARY SYSTEM:
IMPORTANT: ARTIFICIALLY SOFTENED
WATER MUST NOT BE USED TO FILL THE
CENTRAL HEATING 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 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/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.
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.
CLEANING PRIMARY SYSTEMS
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