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> Shut off the appliance, open the drain valve and all
bleed valves on the radiators and allow the water to
flow out of the heating system and the boiler quickly
and fully.
> Close the drain valve.
> Fill the heating system again with water as described
in Section 5.4.4.
> Release water from the system until the system
design pressure of (1.0 bar) 0.1 MPa is attained. (The
actual reading on the digital pressure gauge should
ideally be (0.5 bar) 0.05 MPa plus an additional pres-
sure corresponding to the highest point of the system
above the base of the boiler – 10 m head equals an
additional (1 bar) 0.1 MPa reading on the pressure
gauge. The minimum pressure should not be less than
(1 bar) 0.1 MPa 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
instructions.
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
i
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
(combination 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 recom-
mended that arrangements are made for a Mainte-
nance Agreement. Contact Vaillant Service Solutions
(0870 6060 777) for further details.
Instructions for installation and servicing ecoTEC 839592_13
Functional checks (commissioning part II)
> 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.
Go through the operating manual with the user and
answer any questions.
Draw special attention to the safety instructions, which
the user must follow.
Instruct the user about the methods used for
combustion air supply and flue conducting. In
particular, point out that these measures must not be
altered.
Inform the user that the instruction manuals should be
kept near the appliance.
6.3
Factory guarantee
Two year guarantee for ecoTEC plus appliances
Vaillant undertakes to rectify any manufacturing defect
that occurs within twenty-four months of the installation
date.
For the 2nd year of the guarantee to be valid an annual
service must be carried out by a competent person
approved at the time by the Health and Safety Executive
one year after installation.
The cost of this annual service is not included in the
guarantee.
One year guarantee for ecoTEC pro appliances
Vaillant undertakes to rectify any manufacturing defect
that occurs within twelve months of the installation date.
Registering with us
Registration is simple. Just complete the Guarantee Reg-
istration Card and return to Vaillant within 30 days of
installation. Your details will then be automatically regis-
tered within the Vaillant scheme.
Note: No receipt will be issued.
Immediate help
If your Vaillant boiler develops a fault your first action
should be to contact your installer, as his professional
assessment is needed under the terms of our Guarantee.
If you are unable to contact your installer, phone Vaillant
Service Solutions: 0870 6060 777.
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