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    Application Note Issue Date 04/17/08 Supersedes 01/11/01 ©   2008 Johnson Controls, Inc. www.johnsoncontrols.com Code No. LIT-6375100 Software Release 8.03  A PPLICATION N OTE   UNT Applications Using UNT Applications........................................................................3  Introduction.........................................................................................................3 Key Concepts......................................................................................................4  UNT Controller Applications..............................................................................................4 Fan Coil Units....................................................................................................................8 Unit Ventilators................................................................................................................11 Rooftop Units..................................................................................................................18 Telecommunications Hut/POP Applications....................................................................20 Heat Pumps....................................................................................................................23 Pump Lead/Lag Description............................................................................................24 Questions Common to All Applications...........................................................................25 Controllers Configured to Function as Point Multiplexers...............................................27  Procedure Overview.........................................................................................29 Detailed Procedures.........................................................................................30  Creating a Fan Coil Application.......................................................................................30 Creating a Unit Ventilator Application.............................................................................34 Creating a Rooftop Unit Application................................................................................45 Creating a Telecommunications Hut/POP Application....................................................57 Creating a Heat Pump Application..................................................................................58 Creating a Pump Lead/Lag Application...........................................................................68 Completing the Common Section of UNT Application Question/Answer Paths..............71 Configuring a Controller as a Point Multiplexer Module..................................................77  Point Assignments and Parameters...............................................................80  Fan Coil Units..................................................................................................................80 Unit Ventilators................................................................................................................83    UNT Applications 2 Rooftop Units..................................................................................................................87 Telecommunications Hut/POP........................................................................................91 Heat Pumps....................................................................................................................96 Pump Lead/Lag Parameters.........................................................................................100    UNT Applications 3  Using UNT Applications Introduction Unitary (UNT) controller applications are specifically designed for digital control of packaged air handling units, rooftop units, unit ventilators, fan coils, heat pumps, and other terminal units including Air Handling Units (AHUs) serving a single zone or room. These applications may be used with standalone controllers, controllers connected to the N30/N31 Supervisory Controller, controllers connected to Metasys ®  Companion™/Facilitator™ controllers, or controllers integrated with the Metasys Network through a Network Control Module (NCM). This document provides an overview of UNT applications and includes procedures for the creation of applications. This document describes how to: ã   create a fan coil application ã   create a unit ventilator application ã   create a rooftop unit application ã   create a Telecommunications Hut/POP (Point of Presence) application ã   create a heat pump application ã   create a pump lead/lag application ã   complete the common section of UNT application question/answer  paths ã   configure a controller as a point multiplexer module   UNT Applications 4 Key Concepts UNT Controller Applications Getting Started UNT controller applications are specifically designed for digital control of packaged air handling units, rooftop units, Telecommunications Hut/POPs, unit ventilators, fan coils, heat pumps, and other terminal units serving a single zone or room. These applications may be used with standalone controllers, controllers connected to Companion/Facilitator controllers or controllers integrated with the Metasys Network through a Network Control Module (NCM). When connected to the Metasys N2 Network, the controller provides all point and control information to the rest of the network. The devices communicate through the N2 Bus. For a smaller facility, the controller can stand alone in conjunction with a Zone Terminal. In all configurations, the UNT applications can configure a wide variety of single zone and room Heating, Ventilating, and Air Conditioning (HVAC) equipment. The UNT applications support up to 16 sideloops that are separate from the main control logic. See  Appendix A: Sideloop Applications (LIT-6375160) for more information. The UNT controller can control many different single zone or room applications and control strategies (Figure 1). The types of zone applications that can be controlled include: ã   unit vent ã   fan coil ã    packaged rooftops ã   Telecommunications Hut/POP ã   heat pump ã   generic Input/Output (I/O) The first five applications are explained in this application note. Use the table of contents to locate the specific application you are using.  Note:   Do not use UNT1100 Series controllers for floating or three wire actuator applications, because these actuators could compromise the service life of the UNT1100 output relays.
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