Dwyer 670 - Manual (Page 8)

7
External Electrical Connections - The alarm unit will have the following connection points:
Input 1 - Volt free relay input - (close contact to activate the input).
This input is configured as:
NIGHT SETBACK
Output R1 - Volt free relay output - (contact closes on activation).
This input is configured as:
LOW AIR ALARM
Sash High Input - a. Connection point for Sash High micro switch. (Switch contact to
close and remain closed in Sash High condition).
b. Connection point for Sash High proximity switch. (Switch contact
to close and remain closed in Sash High condition).
Note: Use input a. OR input b. for the Sash High alarm.
Remote Airflow Sensor - Plug in connection for airflow sensor.
Note: The remote Airflow Sensor socket will only be available for units
ordered without the built-in Airflow Sensor.
Com Port - To enable connection to Laptop or PC.
Power supply - Low voltage DC power supply 15V DC.
AV-670:B-32 10/1/09 2:20 PM Page 8