1
User manual
ALFA 11 and
ALFANET 11
0/+99
O
C(1)
Cool / Heat
Thermostat.
VDH doc: 071464
Version: v2.0
Date: 22-11-2007
Software: 053273_ALFA 11/21/31_0-100
C
File: Do071464.wpd
Range: 0/+99
C per 1
C
* Function.
The
ALFA(NET) 11
is a digital thermostat for rail mounting. The function from the thermostat can be
programmed for cooling or heating. The temperature readout is in hole degrees Celsius.
The
ALFA
NET
11
has a RS 485 network connection so it can be read out and adjusted on the Alfanet.
* Installation.
On the connection diagram of the
ALFA(NET) 11
is shown how the sensor, power supply and relay
have to be connected.
After connecting the
ALFA(NET) 11
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) 11
thermostat can be controlled by three push buttons 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.
