1
User manual ALFA(NET) 31 0-100
O
C
Cool/Heat Thermostat.
VDH doc. 053950
Version: v1.0
Date: 14-12-2005
Software: ALFA31 0-100
O
C
File: Do053950.WPD
Range: 0/+100
C per 1
C
* Function.
The
ALFA(NET) 31
is a digital thermostat for panel mounting. The function from the thermostat can
be programmed for cooling or heating.
The
ALFA
NET
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 be
connected.
After connecting the
ALFA(NET) 31
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) 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 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 shows again in the display.
