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HAMWORTHY HEATING LTD

FLEET V series

500001213/G

In line with the values above the following must also be taken into account:



To ensure that the system is adequately protected against any possible corrosion of copper or copper-
bearing alloys that may be present within the system. (Note: Azole should be present in treatment
chemicals to sequester the copper in solution and protect any yellow metal (i.e. copper and brass etc)
components within the system.



The use of artificially softened water MUST be avoided due to its corrosive characteristics

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To ensure that any electrolytic action and subsequent corrosion is prevented. Electrolytic corrosion can
occur between dissimilar metals in the heating system, such as copper, brass, aluminium alloy and steel.



To ensure that the use of a chemical corrosion inhibitor is used to protect the entire system.

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Leaks in the system pipe work MUST be fixed to prevent dilution of water treatment.

It is a condition of this warranty that the appropriate water treatment is applied and that the products used have
been found suitable for all materials used in the central heating system. Periodic inspections should be built into
the service regime and where required replacement of inhibitors is undertaken. Although there are a wide range of
water treatment products available, the following are compatible and should be considered:

Sentinel Performance Solutions Ltd:



Sentinel X100 (protection agent)



Sentinel X200 (lime scale remover)

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Sentinel X300 (cleaning agent for new installations)

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Sentinel X400 (cleaning agent for existing installations)



Sentinel X500 (antifreeze plus protection agent)

Fernox:



Restorer (cleaning agent, for removing rust, lime and sludge)



Protector (protection agent)



F1 (protection agent)

The following applies to system design:



In order to avoid thermal shock, water flow must not be able to be interrupted before the boiler stops firing.

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There must be provision to ensure that the heat exchanger is not susceptible to air locks.

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The air separator must be correctly sized and be equipped with an appropriate vent.



A dirt separator must be correctly sized and fitted in the return close to the boiler(s)



The system pressure must be in accordance with the information detailed within the operating and
maintenance manual (minimum 0.5 bar cold fill and 5.3 bar maximum working pressure).



A filter must be mounted on the return pipe to the boiler(s).



Minimum flow rates must be adhered to (as detailed within the operating and maintenance manual)

In particular, but not limited to, the following conditions are not covered by the 5 year heat exchanger warranty:



Defects resulting from incorrect installation, application, use, lack of the appropriate maintenance regime (in
accordance to the operating and maintenance manuals), deterioration or accident due to negligence or
involvement by an unauthorised third party.



Damage due to acts of God, freezing, electrical storms, water damage, faulty flues, incorrect ventilation of
the boiler room, and, in general, any action, negligence or clause recognised to be of an exceptional nature.



Presence of aggressive vapours (chlorine, solvents, etc...).



Boiler gas configuration or type which is not appropriate to the type of gas approved for the appliance.



Damage caused by use of spare parts not compatible with the product.



Operation of the product at system pressures above that for which it was designed and manufactured.