Carel SD Specifications download pdf (Page 30)

Installation & Maintenance Manual__________

9. Control of the Humidifier

Controller with Alphanumeric Display:

# Description

button to access the working parameters (codes Px,dx); it also resets the internal alarm relay

allows you to display the unit of measure of the displayed value; press for 2 seconds to allow display/programming of set

point; when pressed and held down for 5 seconds with PRG it allows you to access the menu for programming the

configuration parameters

button to display the measured value of the main sensor (in ON/OFF control it is always 0); during programming, it increments

the displayed value

button to display the measured value of the secondary sensor (if used); in programming mode it decrements the displayed

value.

display provides 2 1/2 digit code for indication of digital values and the codes of any alarms present; during programming the

display shows parameter codes and their values

LED indicating the decimal point

LED indicates that the displayed value is actually 1/1000th the actual value; multiply by 1000 to get actual value

LED indicating dehumidify mode

LED indicating alarm relay status

LED indicating steam production in progress, if flashing, it indicates the quantity of steam produced is less than requested

LED indicating the status of the fill valve

LED indicating the status of the drain valve

9.1 Starting Sequence

When the humidifier is started it goes through a sequence of operation that is displayed on the front panel by

the LEDs in the following manner:

1 - INITIAL START 2 - INITIALIZATION 3 - FUNCTIONAL PHASE

In this phase, which lasts 1

second, all LEDs on the display

are lit.

During this phase, which lasts

for 4 seconds, the three LEDs

shown are illuminated.

The humidifier begins to function normally and the control

indicates the following:

• Autotest status

• steam production (in %) with external proportional control;

• the display of the main sensor in stand-alone mode;

• in case the humidifier is disabled, two dashes will appear

flashing in the two right digits

In case of an alarm, the alarm LED will turn on and the corresponding alarm code will be displayed.

911

10 812 7

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 59 60

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Carel SD Specifications Page 30