Stulz Air Booster 2 - Basic Display and Setpoint Configuration; Controller Logic and Main Parameters; How to Change the Setpoint

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AIR BOOSTER 2

UAF %

LAF %

SPt + HYSPtSPt - HL tIP

INFORMATION

• The temperature values (B1, B2, B3) are expressed in Celsius or Fahrenheit degrees;

• The pressure value (B4) is expressed in Bar or PA;

• Flashing “Err” label indicates that there is a probe failure;

• “nu” (not used) label indicates that the probe is not enabled or that the analogue output / digital

input is not used by any function;

• A value from 0% to 100% expresses the output value of the resource, for analogue outputs

AO1 and AO2;

• “OFF” label indicates that the digital input (In1, In2) is not enabled, while “ON” indicates that the

digital input (In1, In2) is enabled.

5.1.2. Basic display and setpoint

The temperature (SPt) or pressure (SPb) setpoint is displayed according to the type of control,

temperature or pressure control. If there is no operation for at least 30 seconds, the display of the

controller returns automatically to basic display.

5.1.2.1. Controller logic and main parameters

Fan Speed

UAF Maximum fan speed (100%)

LAF Minimum fan speed (20%)

SPt Temperature setpoint (25°C)

HL Temperature switch-off hysteresis (3°C)

HY Temperature proportional band (10°C)

tIP Calculated temperature

The factory setting and the complete parameter list is provided in chapter 5.2.

5.1.2.2. Changing the setpoint

Make sure that the keypad is not locked (see paragraph 5.1.4). To modify the setpoint, follow the

procedure below:

1. Press SET;

2. The temperature (SPt) or pressure (SPb) setpoint is displayed and °C/°F led starts to ﬂash;

3. To change the value, press UP and DOWN keys;

4. To save new setpoint and return to the standard display, press SET or wait 30 seconds to exit the

programming.