Vaillant ecoTEC plus SERIES, Instructions For Installation And Servicing

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Installation and Servicing ecoTEC plus
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8 Inspection and maintenance
8.1 Initial inspection
To ensure the continued safe and efficient operation
of the boiler it is recommended that it is checked and
serviced as necessary at regular intervals.
The frequency of servicing will depend upon the
particular installation conditions and usage, but in
general once per year should be adequate.
Danger!
It is law that all servicing work is carried out
by a competent person (CORGI registered).
Inspections/Maintenance work not carried out
by a competent person can result in damage to
property and personal injury.
Only genuine Vaillant spare parts may be used for
inspections, maintenance and repair work to ensure
the long term working order of all functions of your
Vaillant appliance. Any spare parts which might be
required are contained in the current spare parts
catalogues. Information can be obtained from Vaillant
Customer Service Centres.
8.1.1 Safety instructions
Important:
Before starting any maintenance work:
• Isolate the mains electricity supply by disconnecting
the plug at the socket outlet (if there is only an
isolating switch remove the fuse from the switch).
• Turn OFF the gas supply at the gas service valve
fitted to the boiler.
• When removing any water carrying components
ensure that water is kept away from all electrical
components.
• Always use new seals and O rings when parts are
replaced.
• Always test for gas soundness and always carry out
functional checks after any service work and after
replacing any gas carrying component.
• Always check earth continuity, polarity and
resistance to earth with a multimeter after
any service work and after replacing any electrical
component.
Danger!
Electrocution by touching live parts can be
fatal! The supply terminals in the appliance are
permanently live unless the appliance is
isolated from the electrical supply either by
removing the fuse from a fused spur or pulling
the plug out if connected to a socket outlet.
Protect the electronics box from spray water.
Before working on the appliance, turn off the
power supply and secure against restart!
Always perform the following steps after completing
any inspection tasks:
• Sealed system only. If necessary, refill the appliance
with cold water up to a pressure of approx. 1.5 bar
and bleed air from the entire heating system.
• Open the service valve of the gas supply pipe.
• Turn on the power supply and the main switch.
• Check the appliance for gas and water leaks.
• Fill and bleed air from the heating system again,
if necessary.
Note!
If it is necessary to keep the main switch
on for certain inspection and maintenance,
this is indicated in the description of the
maintenance task.
Note!
The boiler is fitted with a combustion analysis
test point. A suitable combustion analyser
can be connected to this point to establish
the combustion performance of the boiler.
Checking/adjustment of this value is required
in the following instances; replacement of
gas valve, conversion to or from Natural Gas/
LPG as part of the service schedule or if
incorrect combustion is suspected
(see section 9).
8.1.2 Maintenance
Before commencing any servicing or maintenance
work, carry out an initial inspection of the system as
follows:
• Inspect the flue, pipe work and electrical
connections for indications of damage or
deterioration.
• Inspect the air supply and ventilation arrangements
of the installation.
• Check the heating and water system, in particular
the condition of radiator valves, evidence of leakage
from the heating system and dripping hot water taps.
8.1.3 Functional check of boiler operation
• Carry out a functional check of the boiler operation
as previously detailed.
• Remove the appliance casing as detailed and operate
the boiler.
• Inspect the burner operation through the viewing
window.
• Check that the flames are evenly covering the
surface of the burner.
• Inspect for signs of excessive flame lift or sooting.
Inspection and maintenance 8