Handing Over To The User; Vaillant Warranty; Inspection And Maintenance; Initial Inspection - Vaillant ecoTEC plus 612 Instructions For Installation And Servicing

6 Functional checks (commissioning part II)

7 Inspection and maintenance

• Release water from the system until the system design pres-
sure of 1.0 bar is attained. (The actual reading on the digital
pressure gauge should ideally be 0.5 bar plus an additional
pressure corresponding to the highest point of the system
above the base of the boiler – 10 m head equals an addition-
al 1 bar reading on the pressure gauge. The minimum pres-
sure should not be less than 1 bar in any installation.) If the
system is to be treated with an inhibitor it should be applied
at this stage in accordance with the manufacturer's instruc-
tions. Further information can be obtained from Sentinel,
Betz Dearborn Ltd., Tel: 0151 420 9595, or Fernox, Alpha–
Fry technologies. Tel: 0870 8700362.
• Refit the boiler casing (see section 5.10).
• Only in ecoTEC plus appliances: Attach the bottom cover
to the boiler by sliding the front edge of the cover into
the lip at the bottom front edge of the appliance chassis.
• Carefully push the rear of the bottom cover upwards
until the spring retaining clips engage at the side of
the appliance. It may be necessary to adapt the bot-
tom cover by removing the easy break sections.
6.2

Handing over to the user

Note
When you have finished the installation, attach
the sticker supplied (835593) to the appliance
in the user's language.
• 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 (com-
bination boilers only)
– 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 gas boiler commissioning checklist along
with the heat input (kW) and temperature difference
between flow and return.
• Leave the user instructions and the installation
instructions with the user.
6.3

Vaillant warranty

Vaillant provide a full parts and labour warranty for this appli-
ance. The appliance must be installed by a suitably competent
person in accordance with the Gas Safety (Installation and
Use) Regulations 1998, and the manufacturer's instructions. In
the UK 'CORGI' registered installers undertake the work in
36
compliance with safe and satisfactory standards. All unvented
domestic hot water cylinders must be installed by a compe-
tent person to the prevailing building regulations at the time
of installation (G3). Terms and conditions apply to the warran-
ty, details of which can be found on the warranty registration
card included with this appliance. Failure to install and com-
mission this appliance in compliance with the manufacturer's
instructions may invalidate the warranty (this does not affect
the customer's statutory rights).
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 serviced as
necessary at regular intervals. The frequency of servicing
will depend upon the particular installation conditions and
usage. An inspection must be carried out once a year.
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 inspec-
tions, maintenance and repair work to ensure the long-
term working order of all functions of your Vaillant appli-
ance. Any spare parts which might be required are con-
tained in the current spare parts catalogues. Information
can be obtained from Vaillant Customer Service Centres.

7.1.1 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 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 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 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!
Instructions for installation and servicing ecoTEC / 839592_09