26
Initial start-up
Only qualified personnel may
carry out the commissioning and
operation of the boiler and the
instruction of the user.
• Check the boiler and system for leaks.
Close the water outlet -
risk of overheating
and scalding.
• Check that all flue gas accessories have
been correctly installed.
• Open the shut-off valves on flow and return.
• Switch ON the system ON/OFF switch on the
control unit.
Note:
When the heating system is started, the
display of the weather-compensated control
unit indicates all superfluous (not connected)
sensors as fault messages.
For removing these fault messages see the
control unit operating instructions.
• If the system water pressure falls below
1.0 bar, top up with water until a pressure
of 1.0 to max. 2.5 bar has been achieved.
• An error code will flash in the display, if the
boiler/burner fails to start properly. For
details about error codes see the quick-
start operating instructions.
• Instruct the customer in the operation of
the boiler. Complete the commissioning log
and hand over the instructions.
• Position the operating instructions in the
boiler room where they are clearly visible.
Saving energy
• Instruct the customer about energy-savings
options.
• Use this opportunity for reducing the heating
temperature night operation using control
accessories.
• Adjust the temperature so you are
comfortable; every degree of room
temperature reduction will achieve energy
savings of up to 5%.
• Reduce the room temperature in unoccupied
rooms as far as possible; please observe frost
protection.
• Ensure that all thermostatic radiator valves
are fully opened in rooms where room
thermostats are installed.
The room thermostat must not be obstructed
by furniture or curtains.
Function checks
• During commissioning, check all control,
regulating and safety equipment for their
correct function and settings.
