1
User manual
ALFA 11 +50/+150
C
Cool/Heat Thermostat.
VDH doc: 072375
Version: v1.0
Date: 16-10-2007
Software: ALFA 11 +50..+150
File: DO072375.WPD
Range: +50/+150
C per 1
C
* Function.
The
ALFA 11
is a digital thermostat for panel mounting. The function from the
thermostat can be programmed for cooling or heating.
* Installation.
On the topside of the
ALFA 11
is shown how the sensor, power supply and relay
have to be connected.
After connecting the
ALFA 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 11
thermostat can be controlled by three push buttons on the front.
These keys are:
SET
- view / change the set point.
UP
- increase the set point.
DOWN
- decrease the set point.
* Viewing set point.
By pushing the
SET
key the set point appears in the display. The led 'set' starts
blinking. A few seconds after releasing the
SET
key the set point disappears and the
measured temperature is shown in the display.