Page 16 Section 4: Installation
4.10 BEFORE YOU COMMISSION
To avoid the danger of dirt and foreign matter entering the boiler
the complete heating system should be thoroughly fl ushed
out – both before the boiler is connected and then again after
the system has been heated and is still hot. This is especially
important where the boiler is to be installed on an older system.
For optimum performance after installation, the boiler and the
associated heating system must be fl ushed in accordance with
the guidelines given in BS 7593 (Treatment of water in domestic
hot water central heating systems). This must involve the use
of a proprietary cleaner, such as Sentinel X300 (new systems),
Sentinel X400 (existing systems), or Fernox Restorer.
After cleaning, it is vitally important that all traces of the cleaner
are thoroughly fl ushed from the system.
For long term protection against corrosion and scale, after
cleaning/fl ushing a suitable inhibitor should be added to the
system water, such as Grant G1000, Sentinel X100 or Fernox
MB-1, in accordance with the manufacturers’ instructions.
Failure to follow the above will invalidate the guarantee.
If the boiler is installed in a garage or out house, in order to
provide further protection should there be a power failure in cold
weather, a combined anti-freeze and corrosion inhibitor can
be used such as Sentinel X500 or Fernox Alphi-11. Follow the
manufacturers’ instructions supplied to achieve the level of anti-
freeze protection required.
For details of the Sentinel Products visit www.sentinel-solutions.
net and for Fernox products visit www.fernox.com.
Grant strongly recommends that a Grant Mag One in-line
magnetic fi lter/s (or equivalent*) is fi tted in the heating system
pipework. This should be installed and regularly serviced in
accordance with the fi lter manufacturer’s instructions.
* As measured by gauss. The MagOne magnetic fi lter has a gauss
value of 12000.
4.11 COMPLETION
Following installation of the boiler, instruct the user in the
operation of the boiler, the boiler controls, the heating controls and
the safety devices.
Please ensure that the Boiler Passport (provided with the boiler)
is completed in full, leaving the top/white copy with the user and
retain the carbon copy for your own records.
Ensure that the User Handbook (supplied with the boiler) is
handed over to the user.
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