Vaillant Warranty; Inspection And Maintenance 7; Initial Inspection; Safety Instructions - Vaillant ecoTEC plus 612 Instructions For Installation And Servicing

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
appliance.
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 compliance with safe and satisfac-
tory standards.
All unvented domestic hot water cylinders must be
installed by a competent person to the prevailing buil-
ding regulations at the time of installation (G3).
Terms and conditions apply to the warranty, details of
which can be found on the warranty registration card
included with this appliance.
Failure to install and commission this appliance in com-
pliance with the manufacturer's instructions may invali-
date 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 serv-
iced 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
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.
7.1.1

Safety instructions

Important:
Before starting any maintenance work:
Instructions for installation and servicing ecoTEC
Supplied By www.heating spares.co Tel. 0161 620 6677
Functional checks (commissioning part II) 6

Inspection and maintenance 7

• 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 service valves in the heating flow and return
and in the cold water inlet (combination boilers only).
• If necessary, refill the device 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 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. Checking/
adjustment of this value is required in the fol-
lowing instances; replacement of gas valve, con-
version to or from Natural Gas/ LPG or if incor-
rect combustion is suspected (see section 9.7).
37