Johnson Controls System 450 Series Installation Instructions Manual

System 450™ Series Control Modules with Analog Outputs
Installation Instructions
C450CPN-1
C450CQN-1
Application
IMPORTANT: Use this System 450 Series Control
Module with Analog Output only as an operating
control. Where failure or malfunction of the System
450 control module could lead to personal injury or
property damage to the controlled equipment or
other property, additional precautions must be
designed into the control system. Incorporate and
maintain other devices, such as supervisory or
alarm systems or safety or limit controls, intended to
warn of or protect against failure or malfunction of
the System 450 control module.
System 450 is a family of modular, digital electronic
controls that is easily assembled and set up to provide
reliable temperature, pressure, and humidity control for
a wide variety of Heating, Air Conditioning, Ventilation,
and Refrigeration (HVACR), and commercial/industrial
process applications.
The System 450 Series allows you to configure custom
application-specific control systems with up to three
input sensors and ten (relay and/or analog) outputs,
including control systems that can monitor and control
temperature, pressure, and humidity applications
simultaneously.
You can easily install and quickly configure a
stand-alone System 450 control module and sensor in
the field as a replacement control for almost any
temperature, pressure, and humidity control.
C450CxN-1 models are analog output control modules
with Liquid Crystal Display (LCD) and four-button touch
pad User Interface (UI) that allows you to set up a
System 450 control system. C450CPN-1 models
provide one self-selecting analog output, C450CQN-1
models provide two self-selecting analog outputs.
Refer to the System 450 Series Technical Bulletin
(LIT-12011459) for more detailed information on
designing, installing, setting up, and troubleshooting
System 450 Series control systems. The System 450
technical bulletin can be accessed and downloaded on
the Johnson Controls® Online Product Literature Web
site at the following Web address:
http://cgproducts.johnsoncontrols.com/default.aspx
System 450™ Series Control Modules with Analog Outputs Installation Instructions
Part No. 24-7664-2780, Rev. A
13
(1/2) (7/16)
DIN Rail
127
(2-15/16)
Clips
(5)
61
(2-3/8)
1/2 in. Nominal
Trade Size
Conduit Hole
22
(7/8)
Figure 1: System 450 Module Dimensions, mm (in.)
Mounting
Location Considerations
Observe the following System 450 location guidelines:
• Ensure that the mounting surface can support the
module assembly, mounting hardware, and any
(user-supplied) panel or enclosure.
• Mount the modules in upright and plugged together
in a horizontal row where possible. DIN rail
mounting is highly recommended.
• Mount modules on flat even surfaces.
• Allow sufficient space for wires and connections.
• Mount the modules in locations free of corrosive
vapors and observe the ambient operating
conditions in the Technical Specifications.
• Do not mount the modules on surfaces that are
prone to vibration or in locations where radio
frequency or electromagnetic emissions may
cause interference.
• Do not install the modules in airtight enclosures.
• Do not install heat-generating devices in an
enclosure with the modules that may cause the
temperature to exceed the ambient operating limit.
Issued December 10, 2009
11
40
(1-9/16)
4
(3/16)
75
Screw
Slots
(Four)
61
(2-3/8)
1