VDH Products ALFA 11 User Manual

User manual
ALFA 11 +50/+150C
Cool/Heat Thermostat.
VDH doc: 072375
Software: ALFA 11 +50..+150
* 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.
Version: v1.0
File: DO072375.WPD
1
Date: 16-10-2007
Range: +50/+150  C per 1  C