The gapbetween the switch contacts must be no less than 3 mm.
* Switch off the appliance at the installations main switch:
a) if the appliance does not function correctly;
b) before cleaning the outside of the appliance ;
c) if the appliance is not to be used for any length of time.
* The room must have an adequate source of replacement air for this appliance to function effectively. Moreover, if
there is any non sealed combustion based appliance such as a water heater, gas stove, etc. in the same room, air
replacement must be suffcient for all appliances to work effectively together.
* The appliance must either exhaust directly to the outside or into a short duct (max 400 mm in length to ensure
certifed performance). Effciency losses will occur if the appliance is installed in ducting subject to any appreciable
back pressure.
* The appliance cannot be used to control activation of water heaters, room heaters, etc. nor must it be connected to
the hot air ducts used by other appliances.
* The air to be extracted from the room must be clean (i.e. free of grease, soot, chemical and corrosive agents, and
explosive or fam mable mixtures) and must not exeed a temperature of 40°C.
* Keep the appliances inlet and outlet grilles free to ensure an optimum fow of air.
* Install the appliance so that the impeller is inaccessible from the air outlet side as verified by contact with the
Test Finger, in compliance with the current safety regulations. If this is not possible, the relevant protection
accessory must be installed.
* Model (H): do not cover or obstruct the humidity sensor grille.
* Model(M): do not cover the lens of the presence sensor.
NOTICE (For Fan with front shutter items)
1. The shutter operationed by Electric-Thermo Switch automatic open and close .
2. Don 't push the Fan shutter by hand or else tooling.
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