Appendix a – ClimaCool CoolLogic Control System User Manual

Page 18

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18

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

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