VDH ALFA(NET) 31 User Manual
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1User manual ALFA(NET) 31 0-100OCCool/Heat Thermostat.VDH doc. 053950 Version: v1.0 Date: 14-12-2005Software: ALFA31 0-100OC File: Do053950.WPD Range: 0/+100C per 1C* Function.The ALFA(NET) 31 is a digital thermostat for panel mounting. The function from the thermostat canbe programmed for cooling or heating.The ALFANET 31 has a RS 485 network connection so it can be read out and adjusted on the Alfanet.* Installation.On the topside of the ALFA(NET) 31 you can see how the sensor, power supply and relay have to beconnected.After connecting the ALFA(NET) 31 to the power supply, a self test function is started. As this test isfinished, the measured temperature appears in the display.When the relay is activated, the led 'on' will light-up in the display.* Control.The ALFA(NET) 31 thermostat can be controlled by three pushbuttons on the front. These keys are;SET - view / change the setpoint.UP - increase the setpoint.DOWN - decrease the setpoint.* Viewing setpoint.By pushing the SET key the setpoint appears in the display. The led 'set' starts blinking. A few secondsafter releasing the SET key the setpoint disappears and the measured temperature is shown in thedisplay.* Changing setpoint.Push the SET key and the setpoint appears in the display. Release the SET key. Now push the SETkey again and together with the UP or DOWN keys the setpoint can be changed. A few seconds afterreleasing the keys the measured temperature shows again in the display. |
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