56
Maintenance
Decommissioning and maintenance works
Inspection and maintenance interval
Maintenance works
- Switch the boiler to stand-by
operating mode (see page 28);
- Use the ON/OFF switch (A) to turn
the boiler off;
Maintenance
Please observe the following safety
instructions:
All works on the boiler and
the heating facility (assembly,
maintenance, repairs) may only
be carried out by authorized
technicians, by using suitable
tools and calibrated measuring
instruments. The exchange of
components requires original ELCO
replacement parts.
The main stopcock for gas must be
closed and secured against reopening.
The panelling must first be removed,
to be able to carry out maintenance
on the boiler. The panelling is secured
by a screw behind the door. After
loosening the screw, the panelling
can be removed by shortly lifting and
pulling it forward.
All equipment is preset at the factory.
An O
2
/ CO
2
control measurement
must be carried out during
commissioning.
No change should be made on the
zero-point setting. The zero-point
setting must only be checked after
a malfunction, or after an exchange
of the gas valve, the venturi or the
ventilator motor.
The zero-point setting does not
serve for setting up the combustion-
technical characteristic values.
These are made exclusively through
the O
2
/ CO
2
setting.
All gas pipes and screws must be
tested for leakproofness, using
a leak-detecting spray, whenever
maintenance or repair works have
been carried out on the boiler.
In this regard, please observe all of
the individual maintenance steps
documented on page 56 ff., as well
as the overview of inspection and
maintenance procedures provided on
page 60 to 61.
Inspection interval
An inspection must be carried out
after every 4,000 boiler operating
hours, however at least once every
year.
An inspection consists of a visual
check, of the general condition of the
boiler and the installation.
The objectives of an inspection is an
assessment of the condition of the
equipment, and an evaluation as to
when maintenance works are required.
A visual inspection can lead to a
maintenance procedure.
No tools are required during an
inspection (except for tools for
removing the panelling). If necessary,
the corresponding individual
maintenance steps must be carried out,
which are listed as of page 56.
Maintenance interval
An inspection of the burner must
be carried out after every 8,000
operating hours, however at least
once every 2 years.
Maintenance consists of control and
cleaning, or a possible exchange
of components of the equipment
or installation, which are subject to
contamination and wear and tear.
The objective of maintenance is to
ensure a long-term functional security
and a cost-effective operation of
the equipment. Through a reduction
of emissions that are due to the
production of heat, primary energy
requirements and a burdening of the
environment can be substantially
reduced.
A visual inspection must always
precede the carrying out of
maintenance works. In this regard, also
see the inspection interval above.
All gas pipes and screws must
be tested for leakproofness, after
maintenance or repair works have
been carried out on the boiler.
Both the gas connection and the
pressure on the connection must be
checked.
M
A
H
- Interrupt the power supply to the
boiler, by operating the mains circuit
breaker in the boiler room.
- Interrupt the gas supply to the
boiler.
During emptying of the boiler, it is
possible that a part of the heating
water stays behind. Make sure that any
remaining heating water cannot freeze,
in case of a frost hazard.
Decommissioning
It may be necessary to take the boiler
of operations in some situations.
Switch the boiler to stand-by operating
mode (see page 28). The boiler should
remain connected to mains, whereby
the pump and the 3-way valve are
operated once every 24 hours, so as to
prevent seizing of the facility.
In case of a frost hazard, it is
recommended to empty the boiler and/
or the entire installation.
