EHC Fusion E10 Combi – Installation and technical manual Page 16
11. Installation: Central Heating pipework/Cont_________
System Pressures
The normal working pressure of the Fusion E10 boiler should be set to 1.5 bar. All sealed
systems should comply with current building regulations and standrads
All Fusion E10 Combi units are water and pressure tested before leaving the factory.
However all compression joints must be checked again at installation due to the
possibilty of transit movement.
System protection
Failure to protect the system will invalidate the manufacturer’s warranty.
After the system has been installed the cleansing and inhibiting procedure must be carried
out as follows: -
1 Fill the system with cold mains water to the recommended pressure and check for leaks,
then drain the system thoroughly making sure all drain cocks are fully open and that the
system is completely drained.
2 Add Fernox S5 via a Fernox injector or radiator at the recommended dose. One bottle must
be used as a minimum per dwelling. If you are not sure of the dose rate, then contact
Fernox.
3 Fill the system back up and circulate the Fernox S5 before the boiler is fired up. Then
commission the system in the normal way. The cleansing agent must be in the system for a
minimum of I hour with the system at normal operating temperature. A longer period of time
would be more beneficial to the cleansing process especially if excess flux was used.
4 Drain and flush the system thoroughly to remove the cleaning chemical and debris present.
This is a crucial part of the cleansing process and must be done correctly. Use a rinse test
meter (TDS), such as the Fernox CTM. The reading must be within 10% of the mains ppm
value.
5 Once the system has been cleansed thoroughly, then add a Fernox Protector (Copal, MB1
or Superconcentrate), to the system. The product must be added as per the manufacturer’s
instructions. This will protect against the formation of scale, corrosion and microbiological
growths. lt is crucial, however, that for a protector to work correctly, the system must be
properly cleansed and flushed.
6 The sticker included within the Fernox Protector carton should be correctly filled in and
attached adjacent to the boiler.
7 Please note: we recommend inhibitor levels are checked on an annual basis (usually during
the service) or sooner if the system content is lost. This should be carried out using a Fernox
inhibitor test kit.
8 Fernox Technical Services can be contacted on 0870 8700362 for further assistance.
NB: Motorised valves should be manually opened during the flushing process and any anti-
gravity valves should be by-passed or removed temporarily. If it is necessary to cap off the
open vent during the mains flush – to prevent overflow ensure the cap is removed prior to
starting the appliance. Advice as contained within BS 7593:1992 and PAS33:1999 should be
followed in conjunction with this method statement.
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