Specifications

Installation & Maintenance Manual__________
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16.2.4 Measuring the Water Temperature and Preheating
The controller measures the water temperature using an NTC sensor, and can be programmed to activate the
preheating function around the set start humidification value; in this way, steam is produced much faster.
16.2.5 Dehumidification Request Signal
If activated, this function closes the contact of a relay when the relative humidity measured by the transducer
connected to the controller exceeds the set threshold.
This signal can be used to start an external dehumidification device.
16.2.6 Cylinder Deposit Detector
This patented device measures the resistance of the PTC temperature sensor located in the flue. In the event
of over-heating (caused by excessive lime scale on the surfaces of the cylinder or alternatively by a low water
level not detected by the level sensor), the overheating alarm is activated.
16.2.7 Hour Counter – Cleaning Request Signal
The electronic controller features an operating hour counter based on the percentage of steam production. The
counter can be reset. The number of operating hours is continuously compared against an internal limit used to
signal the need for cleaning and de-scaling inside the cylinder.
The limit is calculated based on the conductivity of the supply water measured, or alternatively specified
manually using parameter b4 on the controller.
The signal may be deactivated (see controller parameter b1).
16.2.8 Safety Thermostat
The mechanical safety thermostat with manual reset is activated in the event of overheating, caused by a lack
of water inside the cylinder due to the malfunction of the minimum level control; this deactivates the relay that
controls the power supply to the controller and thus places the humidifier in an alarm situation.
16.2.9 Automatic Cylinder Emptying Due to Inactivity
The controller completely empties the cylinder of the water, in case the humidifier stays inactive (without steam
production) for more than the time limit set by the bF parameter (default= 3 days).