Glossary Of Terms - Johnson Controls System 450 Series Technical Bulletin

Table 30: System 450 Series C450CCU Condensing Unit Control System technical specifications
Specification
Compliance
The performance specifications are nominal and conform to acceptable industry standards. For
application at conditions beyond these specifications, Johnson Controls shall not be liable for
damages resulting from misapplication or misuse of its products.

Glossary of terms

°C
Degrees Celsius (°C) displays on the main sensor status screens with the current sensed
temperature value when you set up a Celsius temperature sensor in your control system. °C also
designates an available sensor type when you set up the sensors in the sensor setup screens. See
Accessing and navigating the UI
°F
Degrees Fahrenheit (°F) displays in the main sensor status screens with the current sensed
temperature value when you set up a Fahrenheit temperature sensor in your control system. °F
also designates a sensor type that is available when you set up the sensors in the sensor setup
screens. See Accessing and navigating the UI
bin
The Binary Input (bin) sensor provides defrost termination using an external, user-supplied, binary
input or set of dry contacts. This indicates the termination temperature has been reached based on
the closed binary input state. You can connect a binary input to the Sn-2 terminal and a C terminal
on the control module.
bKLT
You can use the backlight brightness level feature to adjust the LCD backlight intensity. bKLL OFF
means that the backlight is off. bKLH 10 is the brightest backlight setting and the system default.
The backlight brightness level that you select applies to the LCD during normal operation. When
you enter the programming menus to set up the control or press any key, the LCD automatically
goes to the brightest level. If you do not press a key for two minutes, the main screen displays and
the backlight setting reverts to the selected brightness level.
Control module
The control module is the primary module in a System 450 control system, and sometimes the
only module in stand-alone control systems. Each System 450 control system has only one control
module, which contains the control system processor, firmware, memory, and LCD. The control
module receives the input signals from the system sensors, and monitors and controls all of the
System 450 Series C450CCU Condensing Unit Control System Technical Bulletin
Description
United States: cULus Listed; UL 60730-1, File E27734; FCC Compliant to
CFR47, Part 15, Subpart B, Class B
Canada: cULus Listed; CAN/CSA-E60730-1, File E27734; Industry
Canada (IC) Compliant to Canadian ICES-003, Class B limits
Europe: CE Mark – Johnson Controls declares that this product is
in compliance with the essential requirements and other relevant
provisions of the EMC and RoHS DirectiveS.
Australia and New Zealand: RCM mark, Australia/NZ emissions
compliant
for more information.
for more information.
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