Unitary Controller (UNT)

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Application Specific Controllers Technical Manual Controller SectionTechnical BulletinIssue Date 0398 1998 Johnson Controls, No. Description5 Standards Compliance6Configuring the Controller7 Using HVAC PRO for Windows Configuration Tool7 Defining a UNT Control Device Object*7 Defining a UNT Control Device in Companion Software9Installation Procedures11 Design Considerations*11 Tools Needed*11 Environmental Information12 Mounting the Controller *12 Power Line Wiring Transient Noise Precautions*16 I/O and Communications Wiring Transient Noise Precautions18Wiring Details19 Power Source and Loads*19 Wiring Precautions21 Grounding and Isolation UNT110/111, 120/121, 140/14122 Grounding and Isolation UNT110/111, UNT120/121,and UNT140/141 with Separate Load Transformer*23Unitary Controller (UNT)* Indicates those sections where changes have occurred since the last UNT Controller Unitary Controller (UNT) Terminal DesignationsPage25 Analog Inputs*30 Binary Inputs31 Binary Outputs (Triac Jumper Information)

UNT Controller—Unitary Controller (UNT) 3 Troubleshooting Page 61 •Hardware Installation Inspection 61 •Tools Needed for Troubleshooting 61

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