Autotest Procedure; Measurement Of The Water Temperature And Pre-Heating (Not Available In The Version With Type C Control Module); Dehumidification Request Signal (Not Available In The Version With Type C Control Module); Deposit Detector For The Heating Elements (Optional In The Version With Type C Control Module, Std. In The Versions With Type H Or T Control Module) - Carel heaterSteam User Manual

heaterSteam

2.8 Autotest procedure

Each time the humidifier is started (switched from the OFF to the ON position), an autotest procedure is performed, including
checks on the operation of the level control, to test the regular functioning of the appliance.
On start-up and on each draining cycle the operation of the level control is automatically checked by opening the fill
electrovalve until the activation of the working level switch and, successively, opening the drain electrovalve until the
activation of both level switches, and finally, restoring the correct level; in the event of a failed test or irregular timing the
remote-control switch is automatically deactivated the alarm activated.
2.9 Measurement of the water temperature and pre-heating (not available in the
version with type C control module)
The control module measures, using an NTC sensor, the temperature of the water, and can be programmed to activate the pre-
heating function near the value set for the start of humidification; in this way, steam production occurs more quickly.
2.10 Dehumidification request signal (not available in the version with type C control
module)
If activated, this function closes the relay contact when the relative humidity measured by the transducer connected to the
control module exceeds the set threshold.
This signal can be used to activate an external dehumidification device.
2.11 Deposit detector for the heating elements (optional in the version with type C
control module, standard in the versions with type H or T control module)
This patented device measures the resistance of the PTC temperature sensors inserted in the aluminium castings of the heating
elements. In the event of overheating (caused by excessive lime deposits on the surface of the elements, or by low water level
not detected by the level control), the overheating alarm is activated. In units with more than one element, the PTC
temperature sensors are connected in series.
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Carel code +030221761 preliminary version - rel. 2.0 - 03/09/99