Bedienungsanleitung MCZ ALYSSA AIR 6 M1 (Seite 47 von 64) (Englisch)

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28-ALARMS

In the event that alarm A21 is triggered often, please note that:

A21

SAFETY DE

VICES

TRIP

Open stove door Close the door

Open fuel loading hatch Close the hatch.

Lower the fuel level in the hopper.

Air pressure switch Draught diculties or brazier clogged.

Check whether the brazier is clogged by deposits and clean it, if

necessary.

Check and if necessary clean the smoke duct and air inlet.

you must check some points to verify the cause of the problem and possibly act on some adjustments and/or safety devices to restore the

correct operation of the product.

However please note that all adjustments and alterations aecting the operational safety devices, must only be performed if THE

PRODUCT IS INSTALLED IN COMPLIANCE WITH THE STANDARDS AND LAWS IN FORCE AND IF IT IS SERVICED PROPERLY BY AUTHORISED AND

SPECIALISED PERSONNEL. Alterations performed randomly, to ensure operation of the product even under non-compliant conditions, can

cause serious damage to property and injuries to people.

Attention!

The adjustments must only be carried out by authorised and qualied personnel under their responsibility and

by checking the conformity of the installation beforehand. The manufacturer declines all liability for damage to

property or injuries to people in the event of altering the safety devices.

All liability for improper use of the product is entirely borne by the user and relieves the Manufacturer from any civil

and criminal liability.

Series of stoves equipped with a pressure switch installed on the hopper with the sampling point positioned on the bottom, to the right of

the gear motor. This system protects the whole system ensuring tightness of the stove throughout its duration.

It is important to understand that the pressure switch can be triggered with each signicant drop in negative pressure and may be due to:

• Flue clogging.

• The presence of a foreign body in the ue (birds, nests, clogged grates, etc.).

• Wind coming through the ue because it is unprotected or the installation was wall-mounted or required no ue.

• Cold air draught down the ue.

• A damaged pressure switch.

• Blocked membrane inside the pressure switch because soot or pellet dust ltrated.

• The pellet hopper is open or ajar for more than 60 seconds (60 seconds is the estimated time to reload the hopper).

• Pellet trapped between the hopper cover and the hopper, which prevents the gasket to seal.

• Broken/worn hopper cover gasket.

• The gasket between the feed screw and the boiler is damaged or positioned incorrectly.

• Fire door is open or the gasket is worn.

• Clogged lateral smoke exchangers.

• Inspection caps with gaskets installed incorrectly after maintenance.

• Feed screw clogged by compressed pellets at the top.

• The installation is compliant and the ue/smoke tting does not generate obvious obstructions which can stop the release of smoke,

such as: long horizontal sections (over 3 metres), uninsulated smoke ducts, “wall-mounted” smoke exhaust without proper terminals

(installation regulated and permitted in France only [ZONE 3])

• Internal air extraction or recirculation systems (e.g. VMC systems) that generate internal negative pressure exceeding that required

by law (not exceeding 4 Pa)

• Installed without combustion air ducting, it is crucial to check that there is an ecient air inlet dedicated to the stove, according to

the specications referred to in chapter 2 of this manual.

The circuit board has also been equipped with an automatic device with a timer and contactors which increase the RPM of the smoke

extractor so as to restore the negative pressure inside the hopper and therefore the pressure switch, if the cover is opened for top-up or if

there is an immediate or occasional pressure drop such as gusts of wind outside. If the pressure drop lasts for more than 60 seconds, the

product is set in an alarm status (A05 or A18)

•

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