MAINTENANCE INSTRUCTIONS
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6.4 Draining the central heating system
If the need arises to drain the system, this can be done as
follows:
•
Switch the system to “WINTER” mode and ignite the
boiler.
•
Switch off the power supply to the boiler.
•
Wait for the boiler to cool down.
•
Connect a hosepipe to the system drain point and
locate the other end of the hose in a suitable drainage
system.
•
Open the system drain valve (see fig. 1).
•
Open the air vents on the radiators, starting with the
highest and moving down the system to the lowest.
•
When the system has been drained, close the radiator
breather valves and the drain valve.
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Draining the domestic hot water system
If there is a danger of freezing, the domestic hot water system should be drained. This can be done as follows:
•
Close the mains water supply valve.
•
Open all the hot and cold water taps.
•
On completion, close all the previously opened taps.
6.5 Flue safety thermostat
Water heater is equipped with a device to control correct exhaust
of combustion gases. This device guarantees maximum safety of
operation and comes into operation to cut off the flow of gas to the
main burner to make the water heater safe if the flue becomes
partially or totally blocked, or if its section is not suitable for exhaust
of combustion gases.
Before resetting the device, check the exhaust flue section and
make sure there are no blockages obstructing the correct escape
of fumes.
It’s strictly forbidden to tamper with the device.
Resetting:
Before resetting the thermostat, carry out the following operations:
•
Use button
to select the OFF mode;
•
Turn off the main power supply switch;
•
press the button between the two electrical contacts and then
attach the electrical connection again (fig.1);
•
Turn the main power supply switch on again and set the
selector switch to the position required;
In case of repeated water heater lock out, solve the problem
substituting the faulty parts with original once.
Fig. 1
Fig. 1