Technical information

The manufacturers instructions must
NOT
be taken in any way as over-riding statutory
obligations.
4. Terms of Warranty
Damages to the appliance resulting from the
following causes will invalidate the
warranty
:
incorrect or unsuitable use of the boiler
Please ring the eco hometec technical
department for advice on suitability
faulty installation or servicing by the
purchaser or third parties
normal wear and tear
failure to maintain or service appliance in
compliance with this manual
in the case of chemical, electrochemical or
electric influences in as much as the fault
cannot be attributed to the manufacturer
failure to observe installation and/or
operating instructions
effects of fitting, servicing or repairing parts
with non-genuine origin parts (e.g. non-
genuine boiler circuit control)
damage as a result of dust or other foreign
matter being sucked into the burner
influence of noxious vapours
installation and operation in inappropriate
rooms (e.g. in washrooms, launderettes,
swimming pools or hobby rooms)
continued use when apparatus is defective
or requires servicing
in the case of inappropriate alterations or
renovation work by the purchaser or by third
parties
oxygen corrosion, particularly when not
using diffusion-tight plastic pipes in floor
heating systems
corrosion as a result of inadequate system
water treatment.
interim building conditions with unregulated
heating operation (manual operation without
boiler protection)
interim building conditions with dust-polluted
combustion air
5. Commissioning Certificate
The warranty is only recognised if a
completed commissioning certificate
(operational test form) is at hand (send in by
fax or post), as well as an
acknowledgement by eco hometec (u.k.) ltd.
5.1
System water quality
Before commissioning the appliance it is
essential to clean the installation in
accordance with BS 7593: 1992
Installation of in-line strainers is obligatory.
As a protection from corrosion and
impurities the water additive Fernox MB1
has to be used and maintained (4%).
6. Existing Installations
6.1 Prior to Connection

IMPORTANT All eco hometec
boilers are low water content units. In order
to protect and prolong the working life of the
appliance, it is important the general
condition of older systems is carefully
considered.
When connecting to an existing
installation it is important that system
deposits are removed and are not
allowed to contaminate boiler.
This involves the application of a cleanser
and allowing it to circulate around the whole
system for a specified time, then flushing to
drain.

Consider high pressure flushing to
remove all debris in badly contaminated
systems. It is important to select the
cleanser appropriate to the installation i.e.
for a new installation, or for an existing
installation. It is good practice to clean the
system prior to the installation of the new
boiler. The removal of debris, flux residue,
grease, metal swarf etc. from new systems
and any black magnetic iron oxide sludge
and lime scale from old systems is
essential.

In-line strainers must be fitted to the
return water connections for full protection.
All installations must be treated with Fernox
MB1 at a concentration of 4%.
If plastic pipes are used to connect the
boiler to radiators or under floor heating,
it is essential that only those types of
plastic pipe that incorporate an oxygen
diffusion barrier be used. If such pipes
EC 25 Compact Installation/User Manual page
7