Distech Controls GS-AQR Hardware Installation Manual page 4

Table 1: Linear output scaling.
Table 2: ASO operation.
If the device is equipped with the optional relay, then the normally open
relay will close when the air quality exceeds a pre-set trip point. The
trip point and hysteresis value can be programmed via the menu such
that the relay closes when IAQ > Relay Setpoint and opens when IAQ
< Relay Setpoint - Hysteresis. By default, the relay has a one minute
minimum on and off time to prevent short cycling. This feature may be
disabled via the menu. The menu may also be used to test the relay
function. The relay can be used to control an alarm, fan directly or to
signal a digital input.
If the device has the optional Override function installed, then a front
panel pushbutton can be used to generate an override signal output.
The override signal can be configured for Momentary, Latch or Toggle
operation via the menu. This signal can be connected to a digital input
of the controller.
Various optional resistive temperature sensors may also be included
on the PCB and are available at the TEMP output. This is a two-wire
resistive output signal and the temperature value is not displayed on
the LCD.
Other features and configuration are described in the Setup.
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