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INSTALLATION & SERVICING INSTRUCTIONS
6
CLEANING PRIMARY SYSTEMS
CLEANING PRIMARY SYSTEMS
CAUTION: ISOLATE THE MAINS SUPPLIES BEFORE STARTING ANY WORK
AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS.
IMPORTANT: All the following pre-installation sections must be read and requirements
met before starting boiler or flue installation.
6-720-611-730b (12.05)
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.
BEFORE CLEANING THE SYSTEM:
ENSURE THE SYSTEM AND PIPEWORK IS IN
GOOD WORKING ORDER.
USE 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:
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.