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C450CCN-2
Johnson Controls C450CCN-2 Technical Bulletin
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C450CCU
Johnson Controls
www.penncontrols.com
2020-10-21
Sy
st
em 450 Ser
ies C
450C
CU C
ondensing
Unit C
ontrol S
yst
em T
echnical Bulletin
LIT-12013266
2
Table of Contents
Table of Contents
3
Introduction
5
Condensing Unit Control System Overview
5
Condensing Unit Control Module UI
6
Module Assembly and Outputs
12
C450CCU Temperature Sensors
12
System 450 Sensors and Sensor Types for C450CCU
13
Condensing Unit Control System Sensors and Switches
13
Defrost Termination Using a Binary Switch
14
Relay Outputs
14
Relay Staging Delay
16
Expansion Module Fail Safe Feature
16
Sensor Failure Mode
16
Condensing Unit Control System Example
17
Control System Example
17
Assembling System 450 Modules
18
System 450 Module Mounting
18
Mounting Modules on DIN Rail
19
Direct-Mounting Modules
19
Wiring
19
Setting up a Condensing Unit Control System
24
User Settings and Parameters
24
Determining Output Numbers and Output Types
27
Condensing Unit Control Module UI Navigation Guidelines
27
Accessing and Navigating the UI
28
Sensor and Output Status Screens
28
Accessing the System Set up and Menu Screens
28
Setting up the Sensor Setup Screens
29
Setting up the Mode Setup Screens
30
Setting up the Refrigeration Setup Screens
30
Setting up the Defrost Setup Screens
30
Setting up the off Mode Fan Setup Screens
31
Setting up the Time Setup Screens
31
Setting up the Backlight Screens
31
Setting up the Sensors and Transducers
31
Setting up the Sensor Type and Offsets
32
Supported Alarms
33
Typical C450CCU Applications
34
Application 1: Controlling the Temperature of a Walk-In Freezer
34
Application 2: Controlling the Temperature of a Walk-In Cooler
35
Application 3: Controlling the Temperature of a Walk-In Cooler
36
Application 4: Controlling the Temperature of a Walk-In Freezer
38
Troubleshooting Condensing Unit Control Systems
39
Ordering Information
39
Related Documentation
41
System 450 Series C450CCU Condensing Unit Control System Technical Specifications
42
Glossary of Terms
43
North American Emissions Compliance
45
United States
45
Canada
45
Product Warranty
45
Single Point of Contact
46
Contact Information
46
Other manuals for Johnson Controls C450CCN-2
Installation Instructions And Operators Manual
53 pages
Installation Instructions
24 pages
4
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Johnson Controls C450CCN-2 Specifications
General
Brand
Johnson Controls
Model
C450CCN-2
Category
Control Unit
Language
English
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