4.7BOILER SAFETY SYSTEMS

4.8DRAINING THE SYSTEM

The boiler is fitted with the following devices (see section 4.2 for references).

1 - IGNITION FAILURE:

This indicates ignition failure when a flame is not detected within 7 seconds of starting an ignition sequence. The L.E.D. “F” will illuminate to signal the shutdown status.

The system can be reset by pressing and releasing the button “E” after checking to make sure that the gas cock is open.

2 - INSUFFICIENT SYSTEM PRESSURE:

In the event of insufficient water pressure in the heating system, a safety device will shutdown the boiler. Check the system pressure on the pressure gauge “J” and if it is less than 0.4 bar refill the system to 1.5 bar. Once the system pressure is at the correct level the boiler will ignite automatically.

3 - OVERHEATING:

This control shuts off the boiler in the case where the primary circuit reaches a temperature in excess of 105°C.

The red L.E.D. “F” will illuminate to signal this shutdown status.

The system can be reset by waiting a few minutes for the primary exchanger to cool down and then by pressing and releasing the “E” button.

4.ANTI-FROST DEVICE:

The boiler is equipped with a device that, in the event of the water temperature going below 6°C, the burner ignites at the minimum power until the boiler water reaches a temperature of 16°C.

This device operates only if the boiler is functioning perfectly and:

-the system pressure is sufficient;

-the boiler is powered electrically - L.E.D. “B” illuminated;

-the gas is turned on.

5 - EXHAUST DISCHARGE ANOMALY SHUTDOWN:

The boiler is fitted with safety devices, which in the event of defective discharge of exhaust fumes, automatically interrupts the gas supply, thereby shutting off the boiler.

The shutdown of the boiler is temporary and when the discharge state of exhaust fumes has returned to normal, the boiler automatically turns back on

The heating system must be emptied as follows:

-Turn off the boiler;

-Attach a hose pipe and open the drain valve;

-Empty the system at the lowest points (where present). When the heating system is unused for an extended period of time, it is recommended that you add antifreeze with an ethylene glycol base to the water in the heating lines and radiators if the ambient temperature drops below 0°C during the winter.

This makes repeated draining of the entire system unnecessary.

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Ariston 41-116-04 installation instructions Boiler Safety Systems Draining the System
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41-116-04 specifications

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