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Xelex XP0 (XPO)

BuildCert approved central heating corrosion inhibitor - "leave-in" protection

XP0 (XPO) is a high performance BuildCert approved central heating corrosion inhibitor. It is formulated to protect and improve overall central heating system operation and efficiency. XP0 gives excellent performances in every type of water (hard, soft, and demineralised) and is compatible with aluminium and non-metallic components.

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XP0 data sheet XP0 data sheet (609 KB)


Xelex XP0 (XPO) is a high performance BuildCert approved central heating corrosion inhibitor. It is formulated to protect and improve overall central heating system operation and efficiency. XP0 gives excellent performances in every type of water (hard, soft, and demineralised) and is compatible with aluminium and non-metallic components. 

How much Xelex XP0 (XPO) do I need?

Xelex XPO is sold in ready to use 500ml bottles suitable for a typical 3 bedroom home with upto 12 radiators (100 litre capacity). Larger systems will require more XPO according to the system volume. Recommended concentration is 1% although it will not be harmful to the system in greater strengths, but there will be no increase in performance or protection. Commercial and industrial applications tend to have larger pipework and hence a larger system volume. If unsure of volumes this can be checked by contacting the office.

How do I add it to the system?

Xelex XP0 (XPO) can be added to the system in various ways. For an open vented system with a header tank the XP0 can be added directly into the tank. For a sealed system, mostly with a condensing boiler, it can be added either via a filling loop, magnetic filter or by draining some water from the radiator system.

How long does it take to start working?

It will start working straight away and when the boiler is turned on and the system pump is operating it will circulate the additive throughout the system. Any radiators that are isolated, or the TRV turned to zero, need to be turned on to allow the fluid to flow for at least 20 minutes before turning off again.

Can I check the concentration myself?

Yes, a simple test kit,is available to identify that your Xelex XP0 (XPO) level is corrected and providing the protection required. Also available for commercial systems.

Will it need topping up?

Normally the answer is no unless the system has been drained.

How long does it remain working?

As long as the system remains intact the XP0 will continue to carry on working to protect the components in the system.

If I replace my boiler and keep my radiators do I need to add more Xelex XP0 (XPO)?

In most cases the boiler will have been isolated from the system whilst the changeover has occurred but the heating system will not have been drained completely but it is still recommended that fresh XP0 is added. If the system is being drained it is advisable to use a cleaner, either XP3 or XP4, depending on the age of radiator system prior to adding Xelex XP0 (XPO) inhibitor. If an inhibitor is already in the system it will not react with the cleaner.
It is highly recommended that when fitting a new boiler you should also fit a Xelex Magnex filter.

Will the Xelex test kit detect other brands of inhibitors?

The Xelex test Kit will detect other brands of inhibitor. If you are unsure of whether a system has been treated, it is best to drain the system and add fresh Xelex XP0 (XPO) Inhibitor or alternatively add XP0 to the existing water, you cannot overdose the system.

Does adding Xelex XP0 (XPO) affect my boiler warranty?

No. XPO is safe to use with any type of boiler, even those with aluminium components.
All boiler manufacturers recommend the use of inhibitor.

Can I add Xelex XP0 (XPO) at the same time as a cleaner (XP3 or XP4)?

No. Xelex XP0 (XPO) should only be added after the system has been cleaned and filtered when the system is being topped up. If however an inhibitor is already in the system it will not react with the cleaner.

FACTSHEET

Xelex XP0 (XPO)



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