1
User manual ALFA(NET) 35 DP
Cool/Defrost Thermostat.
VDH doc. 053813
Version: v1.3
Date: 12-05-2006
Software: ALFA(NET) 35 DP
File: Do053813.WPD
Range: -10/+40
C per 0,1
C
* Function.
The
ALFA(NET) 35 DP
is a digital thermostat for panel mounting. The thermostat controls the cooling
and defrost. Defrost will be done by temporarily switching off the cooling (natural defrost). The defrost
starts on intervals or on compressor runtime. The defrost stops on time.
The
ALFA
NET
35
has a RS 485 network connection so it can be read out and adjusted on the Alfanet.
* Installation.
On the topside op the
ALFA(NET) 35 DP
you can see how the sensor, power supply and relay have
to be connected.
After connecting the
ALFA(NET) 35 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-up in the display.
* Control.
The
ALFA(NET) 35 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. 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 show in the display.
* Starting/stopping defrost.
The defrost cycle is automatically started and stopped. Programming by the internal parameters. During
defrost the led 'defrost' will light-up.
If there is a defrost cycle, the defrost can be stopped by hand, pushing the
UP
key and then the
SET
key, while the
UP
key is held.
If there is no defrost cycle, the defrost can be started by hand, pushing the
UP
key and then the
SET
key, while the
UP
key is held.
