Options Modules (8-Input)
The options modules are optional additions to the PIC, and are used to add temper a ture
reset inputs, spare sens o r inputs, and demand limi t inputs. Each option m odu le contains 8
inputs, each input meant for a specific duty. See t he wi ring diagram for exact module wire
terminations. Input s fo r each of the options modu les av a ilable include the foll owing:
Option Module 1
4 to 20 mA Auto. Demand Reset
4 to 20 mA Auto. Chilled Water Reset
Common Chilled Water Supply Temperature
Common Chilled Water Return Temperature
Remote Temperature Reset Sensor
Spare Temperature 1
Spare Temperature 2
Spare Temperature 3
Option Module 2
4 to 20 mA Spare 1
4 to 20 mA Spare 2
Spare Temperature 4
Spare Temperature 5
Spare Temperature 6
Spare Temperature 7
Spare Temperature 8
Spare Temperature 9