38
Instructions for installation and servicing ecoTEC
6.2
Handing over to the user
• Set the maximum radiator temperature control to the
desired setting.
• Set the maximum hot water temperature control to
the desired setting.
• Instruct the user in the safe and efficient operation of
the boiler, in particular the function of
– the boiler on/off control
– the maximum radiator temperature control
– the maximum hot water temperature control (only
800 and pro series)
– the pressure gauge
• Show the user how to operate any external controls.
• Explain to the user the importance of having the boiler
regularly serviced by a competent servicing company.
To ensure regular servicing, it is strongly recommend-
ed that arrangements are made for a Maintenance
Agreement. Please contact Vaillant Service Solutions
(0870 6060 777) for further details.
• Record central heating operating pressure in the
Benchmark Log Book along with the heat input (kW)
and temperature difference between flow and return.
Failure to install and commission this appliance in
compliance with the manufacturers instructions may
invalidate the warranty (Note: This does not affect
your statutory rights).
• Leave the user instructions, installation instructions
and log book with the user.
7
Inspection and maintenance
7.1 Initial
inspection
To ensure the continued safe and efficient operation of
the boiler it is recommended that it is checked and serv-
iced 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.
7.1.2 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 isolat-
ing 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 com-
ponents.
• 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 switch
box are live even if the main ON/OFF switch is
turned off.
Protect the switch 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:
• Open the maintenance taps in the heating supply and
return and in the cold water inlet (only 800 series).
• If necessary, refill the device with hot water up to a
pressure of approx 1.5 bar and evacuate the heating
system.
• Open the maintenance tap in the gas supply pipe.
• Turn on the power supply and the main switch.
• Check the appliance for gas and water leaks.
• Fill and evacuate the heating system again, if neces-
sary.
Note
If it is necessary to keep the main switch on for
certain inspection and maintenance, this is indi-
cated 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 com-
bustion performance of the boiler. It is not nec-
essary to check the CO
2
content or adjust the
air ratio of the boiler during the annual service.
Checking/adjustment of this value is only
required in the following instances; replacement
of gas valve, conversion to or from Natural Gas/
LPG or if incorrect combustion is suspected
(see Section 9.7).
6 Commissioning Part II
7 Inspection and maintenance
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