VDH ALFANET 85, User Manual

Page: 1 / 8

1
User manual
ALFANET 85
Cool thermostat with fan
and defrost control
VDH doc. 080645 Version: v1.0 Date: 19-05-2008
Software: ALFANET85 File: Do080645.WPD Range -40/+50°C
* Installation.
On the side of the ALFANET 85 and on the connection diagram is shown how to connect sensors,
power supply and the relays.
After connecting the ALFANET 85 to the power supply a self-test function is started. Next the
measured temperature of the control sensor is shown in the display (normal operation mode).
* Control.
The ALFANET 85 thermostat can be controlled by four push buttons on the front.
These keys are:
SET : view/change the set point
UP : increase the set point
DOWN : decrease the set point
DEFROST : manual start/stop the defrost
* View set point.
By pushing the SET key, the set point is shown. Also the decimal point of the most right display
starts flashing. A few seconds after releasing the SET key, the set point disappears and the
measured value is shown again.
* Changing set point.
Push the SET key to show the set point. Release the set key. By pushing the SET key
simultaneously with the UP or DOWN keys the set point can be changed. A few seconds after
releasing the set key the measured value is shown on the display.
* Read-out defrost sensor.
Push the UP key to show the value of the defrost temperature sensor.