“The Sentinel Central Heating Flushing Guidelines” are aimed at promoting best practice in flushing domestic central heating systems. They are designed to provide practical assistance for the heating engineer, while encouraging industry-wide standards in system flushing. Developed in accordance with BS7593. They are based on original research by BetzDearborn Sentinel.

Sentinel’s Jetflush system will be demonstrated with a working model on stand. The machine is designed to quickly and safely remove even the toughest magnetite sludge and corrosion debris from central heating systems.

Flushing a system to remove foulants complies with the guidelines on water treatment as set out by Benchmark. The Jetflush is recommended for use following a new installation, before new parts are fitted to an existing installation or when a system has failed as a result of a blocked pump or cold spots in the radiator. Apart from saving time, power flushing is a very effective method of clearing blockages and foulant.

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I would be delighted to see evidence of any research undertaken on that subject as suggested above has taken place.

As mentioned in my observations on the subject there are situations where I personally would prefer to use power flushing. I cited certain problems on new build homes, usually with more than 14 radiators. In particular I referred to faulty thermal store systems with upwards of 300 litres of black/brown viscous liquid itching to ruin the customer’s brand new carpets and decorations.

Plumbers are human beings and the stress of working in such circumstances is real. New build typically use 10mm copper pipe. Connections to 10mm radiator valves are sometimes tenuous and readily leak. As an aside, where 10mm is used I always include 15 / 10 reducers with a 15mm radiator valve to provide a stronger and lasting detail for the future.

New build homes invariably employ end-feed fittings and I have known many – not a few – fail when even slightly disturbed. Solder does not always make it beyond the leading edge of the fitting.

The chances are that radiators so old with tough magnetite and corrosion debris either want changing or at least thermostatic radiator valves fitting following cleaning. Removal would therefore presumably include flushing outside the home.

I remind myself that cleaning and flushing are two entirely separate processes. Chemicals clean as no doubt BetzDearborn will be emphasising on the day. I look forward to that.

AND

LA-CO will be present with what appear to be new products of interest in the impressive line up of 85 exhibitors including one from Basingstoke.

I’m definitely going.