Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual - page 25
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ecoTEC exclusive installation and maintenance instructions / 0020017768_02
6.3.2 Hot
water
function
• Switch on the appliance.
• Turn on a hot water tap fully.
• Press "i" to activate the status indicator.
When the hot water function is working correctly the
display shows "S.14".
Fig. 6.9 Display during hot water preparation
6.3.3 Subsequent flushing through of the heating
system ("hot")
• Allow the appliance to run until both the appliance
and the heating system have reached their operating
temperature.
• Check the heating system for leaks.
• Connect a hose to the drain valve which is located at
the lowest position in the heating system.
• Shut off the appliance, open the drain valve and all
vent 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.
• Re-fill the heating system with water (see Chapter 6.1.1).
• Drain water out of the system until a system pressure
of 1.0 bar is reached. (The ideal measured value on the
pressure gauge is 0.5 bar plus an extra amount corre-
sponding to the highest point of the system above the
boiler. A height of 10 m corresponds to a pressure in-
crease on the pressure gauge of around
1 bar. The pressure must not be less than 1 bar on any
installation.)
If the system is to be protected by an inhibitor, it
should be added 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 from Fern-
ox, Alpha–Fry technologies, Tel.: 0870 8700362.
• Re-mount the enclosure of the boiler.
• 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.
6.4
Handing over the appliance to the owner
• Set the controller for the maximum radiator tempera-
ture to the required temperature.
• Set the controller for the maximum hot water temper-
ature to the required temperature.
• Instruct the operator in the safe and efficient opera-
tion of the boiler, paying particular attention to the
functions of:
– the ON/OFF switch of the boiler,
– the controller for the maximum radiator tempera-
ture,
– the controller for the maximum hot water tempera-
ture (only on combination boilers),
– the pressure gauge.
• Make the operator acquainted with the operation of
any external controllers.
• Explain to the operator the importance of regular
maintenance by a competent heating engineer. It is
strongly recommended that a maintenance contract
be taken out to ensure regular maintenance. Further
information can be obtained from Vaillant Service So-
lutions (0870 6060 777).
• Enter the operating pressure of the central heating
system, the heat feed (in kW) and the temperature dif-
ference between the flow and return in the Bench-
mark gas boiler commissioning checklist.
If the appliance is not installed and commissioned in ac-
cordance with manufacturer's instructions this can lead
to invalidation of the guarantee (Note: Your legal rights
remain unaffected by this.)
• Leave the operating and installation instructions with
the operator of the appliance.
h
Note!
When you have finished the installation, attach
the sticker supplied (835593) to the front case
of the appliance in the user’s language.
a
Caution!
The front cover should only be removed
- for initial installation access
- for servicing
- for testing
For continuous and safe operation the front
cover must be fitted together with a correctly
fitted and sealed flue system.
Adapting the appliance to the heating system 7