VDH ALFA 31 DP User Manual

VDH doc. 970629
Software ALFA 31DP

* Installation.

On the Topside of the ALFA 31 DP you can see how the sensor, power supply and relay have to
be connected.
After connecting the ALFA 31 DP to the power supply, a self test function is started. As this test is
finished the measured temperature appears in the display.
When the relay is activated, the led 'on' will light in the display.

* Control.

The ALFA 31 DP 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
seconds after releasing the SET key the setpoint disappears and the measured temperature is shown
in the display.

* Changing setpoint.

Push the SET key and the setpoint appears in the display. Release the SET key. Now push the SET
key again and together with the UP or DOWN keys the setpoint can be changed.
A few seconds after releasing the keys the measured temperature is shown again in the display.
User manual ALFA 31 DP
Cool/Heat Thermostat.
Version: v1.1
File: DO970629.WP8 Range: -10,0/+40,0 °C per 0,1°C
1
Date: 02-11-1999