The Guardian Electrolytic scale inhibitor protects the pipe system from the formation of limescale by a natural process using a zinc anode which holds the hardness salts in suspension rather than adhering to the pipe work or heat exchangers.
The unit should be fitted in the rising main to ensure whole house protection.
Why fit an Electrolytic Scale Inhibitor?
Part L of schedule 1 of the Building Regulations (England & Wales) is concerned with the conservation of fuel and power in buildings. For dwellings, the regulations are supported by approved documents L1A (new dwellings) and L1B (existing dwellings). These documents give minimum provisions for boiler efficiency, system circulation, hot water storage, system preparation and commissioning of gas-fired, oil-fired and solid fuel systems together with electric wet central heating systems.
They state “Where the mains water hardness exceeds 200ppm, provision should be made to treat the feed water to water heaters and the hot water circuit of combination boilers to reduce the rate of accumulation of lime-scale and the consequent reduction in energy efficiency.”
Therefore fitting an Electrolytic Scale Inhibitor fulfils compliance with the regulations for both new and existing dwellings.
How does an electrolytic scale inhibitor work?
An electrolytic scale inhibitor has two metals inside it - copper and zinc.
In the presence of water, the two metals produce an electrical cell. The electrical charge and some new zinc ions in the water cause the hard water (calcium and magnesium ions) which forms scale to cling together in a different crystal form which is less likely to stick to pipes or other surfaces.
Is it safe?
Yes it is safe. The amount of zinc added to the water is really tiny.
Is it better than a water softener?
It requires no maintenance and is much cheaper to install.
There are naturally occurring calcium ions in hard water which may benefit health.
The electrolytic scale inhibitor does not remove these calcium ions.
Does it work for stored water in a tank or cistern?
Yes. The different crystal form in the lime scale is permanent.
The scale inhibitor will be effective for water which is stored before use.
Does it require maintenance?
No. Once fitted, the electrolytic scale inhibitor needs no electricity supply, batteries, magnets or salt. It is a maintenance free alternative to a water softener.
How long will it last?
Depending on the hardness of the water and the flow rate, it will treat all the water in the property for five to ten years. After this time it will need replacing.
