Johnson Controls System 450 Series Technical Bulletin

SNF
x
In the sensor failure mode (SNF
x
) screen in the REFR and PdWN setup menus, select the mode of
operation for the compressor and/or LLSV outputs in the event that a sensor or associated sensor
wiring that the output references fails. SNF modes for the refrigeration output are ON, OFF, or CYC.
SNF modes for the compressor in the Pump Down mode are ON and OFF. See Sensor failure mode
for more information.
System setup screens
Select the values that determine how your control system operates and the condition ranges that
your system controls. Depending on the control module type and firmware version, your system
setup screens can include sensor setup screens, relay output setup screens, and analog output
setup screens. Navigate to the various system setup menu screens to access the system setup
screens. See for more information.
System status screens
Provide the current status of each sensor and output in your control system. When the main
screens autoscroll on the display, press Next repeatedly to access the system status screens. See
Sensor and output status screens for more information.
North American emissions compliance
United States
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
Canada
This Class (B) digital apparatus meets all the requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numérique de la Classe (B) respecte toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
Product warranty
This product is covered by a limited warranty, details of which can be found at
www.johnsoncontrols.com/buildingwarranty.
45System 450 Series C450CCU Condensing Unit Control System Technical Bulletin

Johnson Controls System 450 Series Specifications

General

Brand	Johnson Controls
Model	System 450 Series
Category	Control Unit
Language	English