Strebel ML 125 GT, Technical Manual

Page: 18 / 19

17
7 OPERATION
7.1 OPERATION CHECKS
The heating system must be used suitably, ensuring on the one hand, optimum combustion with reduced
emission to the atmosphere of carbon monoxide, hydrocarbons and soot, and on the other avoiding all damage
to persons and property.
The pressurisation must remain within the limit values shown in the technical data table.
The burner switch should always remain on; this ensures that the boiler water temperature remains near the
value set by the thermostat.
In the case of flue gas leaks from the front of the boiler (door and burner plate), the closure tie rods
of the single parts must be adjusted; if this is not sufficient, replace the gaskets.
7.2 TEMPORARY BOILER STOP
To stop the boiler temporarily, set the main switch on the control panel to “OFF”.
7.3 PROLONGED BOILER STOP
Close the gas valve that is fitted upstream of the boiler.
WARNING:
During long stoppages in winter and in order to avoid frost damage, drain both the sanitary water*
and the heating system water; drainage of the latter can be avoided by adding antifreeze.
• Boiler with hot water calorifier.
7.4 PERIODICAL USER CHECKS
Check periodically that there is no air in the heating system check all AAV devises Periodically check the boiler
pressure.
7.5 MAINTENANCE AND CLEANING
maintenance and cleaning can be carried out after closing the fuel supply and switching off the electrical supply.
As economic operation depends on the cleanliness of the heat exchanger surfaces and on burner adjustment have
the burner settings checked by professionally qualified personnel.
Analyse the system water and allow for adequate water treatment to avoid the formation of calcareous
incrustations that initially reduce boiler efficiency, and then lead to damage;
- Check that the Boiler and the flue gas sealing gaskets are in good order and if not replace;
- Periodically check the efficiency of the regulation and safety instruments on the system.
WARNING
Do not open the door and do not remove the fume chamber while the burner is in operation. In all cases wait a few
minutes after stopping the burner for the insulation to cool.
WARNING:
during long stoppages in winter and in order to avoid frost damage, drain both the sanitary water
and the heating system water; drainage of the latter can be avoided by adding antifreeze.
IMPORTANT
It is recommended to check periodically for possible scale deposits through the side inspection plugs (see par. Technical
Data): if necessary, carry out chemical washing.