Appendix a – ClimaCool CoolLogic Control System User Manual
Page 18
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Appendix A
Physical Hardwire Inputs and Outputs
The CoolLogic Master Control Panel with I/O Pro 8/12U - Quick Reference Guide
Input Points
Input #
Description
Input Type
1.
Bank Chilled Water Outlet Temperature
AI - Thermistor/RTD
2.
Bank Chilled Water Entering Temperature
AI - Thermistor/RTD
3.
Bank Condenser Water Outlet Temperature
AI - Thermistor/RTD
4.
Bank Condenser Water Entering Temperature
AI - Thermistor/RTD
5.
Outside Air Temperature
AI - Thermistor/RTD
6.
Remote Cool Target Set Points
AI - (2-10VDC/4-20Ma)
7.
Demand Limiting
AI - (2-10VDC/4-20Ma)
8.
Chilled Water Pressure Differential Flow Sensor
AI - (0-5 VDC)
8a.
Optional Chilled Water Flow Switch (Only
DI - (10 kohm = Chilled Water Flow Switch)
When Using a Switch for a Flow Safety Device)
(Open = Both Flow Switches Open)
8b.
Optional Condenser Water Flow Switch (Only
DI - (6.6 kohm = Both Flow Switches Closed)
When Using a Switch for a Flow Safety Device)
(20 kohm = Condenser Water Flow Switch Closed)
9.
Local-Off-Remote Selector Switch
DI - (Local and Remote Open – Chiller Off)
10.
Remote Heat Target Set Point
AI - (2-10VDC/4-20Ma)
11a.
Condenser Water Pressure Differential Flow Sensor
AI - (0-5 VDC)
12.
Phase Loss Monitor
DI - (Common to Normally Open Contact)
(Open is Failed Condition)
Output Points
Output # Description
Output Type
1.
Control Relay 1 (Spare)
DO - Form C Contact
2.
Control Relay 2 (Spare)
DO - Form C Contact
3.
Control Relay 3 (Spare)
DO - Form C Contact
4.
Control Relay 4 (Spare)
DO - Form C Contact
5.
Chiller Status Output
DO - Form C Contact
6.
Common Alarm Output Contacts
DO - Form C Contact
7.
Header Bypass Valves
8.
Spare
Legend:
AI
= Analog Input
DI
= Digital Input
DO
= Digital Output