
2 Safety information
3.1 Technical specifications for warranty
and guarantee claims
A prerequisite for the assertion of warranty and gua-
rantee claims is compliance with the following tech-
nical specifications.
For more information on the individual points, see the
boiler installation instructions.
Regular maintenance and cleaning
–The boiler and the components of the heating sys-
tem must be maintained and checked regularly.
–This is the prerequisite
–for permanently reliable functioning of the boi-
ler,
–for energy-saving and environmentally friendly
operation of the boiler,
–for a long service life of the boiler.
–Option/Recommendation: Conclude maintenance
contract.
–Keyword documentation: In the course of main-
tenance by qualified personnel, the completed
activities/measures are documented in the main-
tenance log. It is recommended to keep a plant
logbook (for documentation/evidence purposes of
own activities), especially if specialist main-
tenance is not carried out.
Fuel
–The fuel used must comply with the spe-
cifications.
–Unapproved fuel can lead to inefficient
combustion and can damage the boiler.
Specifications for the filling/supplementary
water of the heating system
–Control the pH value: must be between 8.2
and 9.5
–Avoid of stone formation (= limescale on heat
exchanger surfaces):
–Pay attention to the water hardness
–Soften filling water, or better: desalinate.
–Avoid the corrosion on the water side (is usually
triggered by the available oxygen in the water):
–Correct system planning, correct dimen-
sioning, pay attention to material com-
binations.
–Repair leaks immediately.
–Expansion vessel (prevents air suction when
the system cools down): Set pressure cor-
rectly, check regularly.
–Existing underfloor heating: Attention with old,
diffusion-open plastic pipes (carry out a sys-
tem separation).
Return temperature to the boiler
–A sufficiently high return temperature into the boi-
ler must prevent the temperature from falling
below the dew point (resulting in corrosion in the
boiler).
–This is ensured at ecotop zero/light by the inte-
grated return lift as standard.
Supply air to the boiler
–The supply air to the boiler must not contain any
aggressive substances. These can cause cor-
rosion in boiler and fireplace.
–Aggressive substances are, e.g. chlorine or fluo-
rine compounds (used in cleaning agents, sol-
vents, adhesives,...).
3.2 Conditions for entitlement to benefits
For warranty and warranty claims observe the fol-
lowing points:
–The warranty begins at the time at the time of han-
dover (delivery note, commissioning form).
–The warranty period is calculated from the date of
initial commissioning (according to the meter of
the operating hours of the control).
–The warranty periods are based on the relevant
regulations.
–We must be notified promptly and accurately of
any damage incurred, so that the cause can be
clarified.
–If the system has defects despite correct instal-
lation (in compliance with the technical docu-
mentation), we grant a warranty provided that the
system has been examined by the plant customer
service (commissioning form).
–The guarantee applies to technical, construction-
related faults and faults in the manufacture of the
system that prevent correct and problem-free
usage.
–We are not liable for parts that were not produced
by SOLARFOCUS. However, we are prepared to
assign our claims against the producer (con-
cerning this defect) to the buyer.
–In fulfilling the warranty/guarantee services, we
shall cover only the assembly time and the mate-
rials used, but not any travel or accommodation
costs necessary for the fitters/engineers or any
return transport costs.
–SOLARFOCUS GmbH assumes no liability for
any consequential costs of damages.
–The repair and/or warranty replacement shall be
carried out on site or in the SOLARFOCUS fac-
tory at our discretion.
–The company SOLARFOCUSwill determine whe-
ther such work requires a repair or whether the
parts are to be replaced free of charge.
4 Operation manual ecotop-zero, ecotop-light