Technical data

Installation and maintenance instructions ecoTEC exclusive 0020017768_0528
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 Section 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
corresponding to the highest point of the system
above the boiler. A height of 10 m corresponds to a
pressure increase 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.: [phone], or from
Fernox, Alpha–Fry technologies, Tel.: [phone].
• 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
bottom cover by removing the easy break sections.
6.4 Handing over the appliance to the owner
• Set the controller for the maximum radiator
temperature to the required temperature.
• Set the controller for the maximum hot water
temperature to the required temperature.
• Instruct the operator in the safe and efficient
operation of the boiler, paying particular attention to
the functions of:
– the ON/OFF switch of the boiler,
– the controller for the maximum radiator
temperature,
– the controller for the maximum hot water
temperature,
– 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
Solutions (0870 6060 777).
• Enter the operating pressure of the central heating
system, the heat feed (in kW) and the temperature
difference between the flow and return in the
Benchmark gas boiler commissioning checklist.
If the appliance is not installed and commissioned in
accordance 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.
• Go through the operating manual with the operator
and answer any questions.
• Draw special attention to the safety instructions,
which the operator must follow.
• Instruct the operator about the methods used for
combustion air supply and flue conducting. In
particular, point out that these measures must not be
altered.
• Inform the operator that the instruction manuals
should be kept near 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.
6 Start-up