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10 Initial operation
The installation and maintenance must be carried out by
a qualified specialist. He will also be responsible for the
proper technical installation and initial operation in
compliance with applicable standards.
After the installation of the boiler unit, the installation
engineer must demonstrate to the user the operating
procedures and safety devices, and supply him with the
user manual.
– Fill heating system up to the required water level or
water pressure and purge of air.
The required water pressure can be indicated by
means of the adjustable red pointer on the
manometer.
In open systems according to DIN 4751 Part 1 and a
total hardness exceeding 15° dH repeated addition of
water treatment products or complexing agents is
recommended. The respective user instructions are to
be adhered to.
– Open stopcock valve in the gas supply to the burner.
– Purge gas pipe.
– Switch on main switch.
– Set boiler temperature control unit to desired boiler
temperature. Set the boiler temperature control unit to
maximum value in combination with the
rapidomatic
®
heating control unit.
– Switch „auto/man/TÜV-switch to „auto“.
First a starting (pilot) flame will be ignited by the ignition
automat. Subsequently, the second stage for the main
burner is released. The main burner starts burning after
approx. 12 seconds and the gas boiler will be heated up
to the pre-set temperature.
If there is no automatic ignition, the fault light in the boiler
control panel will illuminate and the ignition automat must
be released.
For this purpose open boiler cabinet door and press the
red illuminated Reset-button of the ignition automat (see
Fig. 6, pos. 1). The alarm light extinguishes and the
boiler unit is ready for use.
– Heat up the installation.
– Check all control, regulating and monitoring devices
with regard to their proper functioning.
– In the event of water shortage, refill the system when it
has cooled down.
– Demonstrate the operation of the installation to the
user.
10.1 Function check
The ignition automat requires a ionization current of only
0.9 µA and has a safety time of 25 seconds. As soon as
the ionization reports a burning flame, the main gas valve
is opened and the ignition sparks after 2-3 seconds.
When checking proper functioning, switch on the
appliance once with unplugged ionization plug. After 25
seconds safety time it should indicate a malfunction. After
plugging in the ionization plug the boiler unit should
function properly without any malfunction.
Safety provisions and switch functions
In the event of flame failure during operation the fuel
supply will be cut off immediately and the appliance will
try to reignite after 25 seconds waiting. Should there be
no flame, then the appliance will switch to malfunction
after expiration of the 10 seconds safety time.
10.2 Unlocking the safety temperature limiter
STL
If the heating system has been switched off by the safety
temperature limiter, it is essential to find the cause before
the system is put into operation again.
The release of the safety temperature limiter is on the
control panel. In order to release the STL, remove screw
cap and press the button underneath.
10.3 Unlocking the waste gas monitor
It is not permitted to switch off the standard built-
in waste gas monitor. Interventions that affect the
proper functioning of the waste gas monitor are
not allowed since in the event of a faulty or
malfunctioning waste gas monitor the boiler unit
will not be switched off when waste gasses fill the
boiler room.