Johnson Controls UNT1100 Series User Manual
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Johnson Controls UNT1100 Series User Manual

Johnson Controls UNT1100 Series User Manual

Unitary (unt) controller
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Unitary (UNT) Controller 1100
Series User's Guide
Using this Guide ........................................................1-1
Chapter 1
Introduction...................................................................................................... 1-1
Key Concepts................................................................................................... 1-2
Chapter Organization .....................................................................................................1-2
Introduction to the UNT1100 Series ..................................2-1
Chapter 2
Introduction...................................................................................................... 2-1
Key Concepts................................................................................................... 2-2
UNT1100 Series Operation............................................................................................2-2
Related Information........................................................................................................2-4
Standards Compliance...................................................................................................2-4
Configuring the UNT1100 Series .......................................3-1
Chapter 3
Introduction...................................................................................................... 3-1
Key Concepts................................................................................................... 3-2
HVAC PRO Configuration Tool ......................................................................................3-2
Bench Testing ................................................................................................................3-2
Procedure Overview........................................................................................ 3-3
Detailed Procedures........................................................................................ 3-4
Defining a UNT1100 in a Metasys Network ...................................................................3-4
© Johnson Controls, Inc.
www.johnsoncontrols.com

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  • Page 1: Table Of Contents

    Unitary (UNT) Controller 1100 Series User’s Guide Using this Guide ............1-1 Chapter 1 Introduction...................... 1-1 Key Concepts....................1-2 Chapter Organization .....................1-2 Introduction to the UNT1100 Series ........2-1 Chapter 2 Introduction...................... 2-1 Key Concepts....................2-2 UNT1100 Series Operation....................2-2 Related Information......................2-4 Standards Compliance....................2-4 Configuring the UNT1100 Series ........3-1...
  • Page 2 Installing the UNT1100 in an AS-ENC100-0 Enclosure Kit ..........4-6 Installing the UNT1100 in an EWC10 Enclosure Kit ............4-7 Troubleshooting ....................4-8 Tools Needed.........................4-8 Installation Checkout......................4-8 Isolation and Grounding UNT1100 Series without an Earth Ground Connection ..4-9 Wiring the UNT1100 Series ..........5-1 Chapter 5 Introduction...................... 5-1 Key Concepts....................5-2 Power Source and Loads....................5-2...
  • Page 3 Wiring to RLY050/002 Relays ..................5-16 Wiring Sensors and Actuators..................5-18 Detailed Procedures..................5-23 Connecting HE-6300 Humidity Sensor ................5-23 Troubleshooting .................... 5-24 Internal Thermal Protection..................5-24 Downloading and Commissioning the UNT1100 Series..6-1 Chapter 6 Introduction...................... 6-1 Key Concepts....................6-2 Commissioning Procedures ...................6-2 Troubleshooting ....................6-3 Ordering the UNT1100 Series ..........7-1...
  • Page 4 UNT Controller Key Concepts....................B-2 Environmental Information .................... B-2 Electrical Noise in Rooftop Units................... B-2 Considerations for Gas Ignitions ................... B-2 Considerations for Specific Rooftop Units..............B-5 Procedure Overview..................B-7 Detailed Procedures..................B-8 Installing a UNT1100 in a Rooftop Unit................. B-8...

  • Page 5: Using This Guide

    Application Specific Controllers Technical Manual Chapter 1 Using this Guide Introduction The Unitary (UNT) Controller 1100 Series User’s Guide provides information about how to use the UNT1100 series controller. This chapter outlines the guide’s organization and content. © January, 2001 Johnson Controls, Inc. www.johnsoncontrols.com...

  • Page 6: Key Concepts

    UNT Controller Key Concepts Chapter Organization Each chapter of this Unitary (UNT) Controller 1100 Series User’s Guide is divided into five sections as described in Table 1-1. Table 1-1: Chapter Organization Section Description Introduction Briefly outlines the contents of the chapter. Key Concepts Describes background information necessary to perform or understand specific tasks.

  • Page 7: Introduction To The Unt1100 Series

    Introduction to the UNT1100 Series Introduction The UNT1100 Series is an electronic device for digital control of packaged air handling units, unit ventilators, fan coils, heat pumps, and other terminal units serving a single zone or room. It also can be configured as a generic Input/Output (I/O) device for basic point monitoring applications when used within a Metasys®...

  • Page 8: Key Concepts

    UNT Controller Key Concepts UNT1100 Series Operation You can easily configure point inputs and outputs, and software features to control a wide variety of Heating, Ventilating, and Air Conditioning (HVAC) equipment applications. The UNT1100 may be used as a standalone controller or connected to the Metasys Network through a Network Control Module (NCM), N30, N31, or Companion™...
  • Page 9 Each has a different sequence of operation, all of which are covered in the HVAC PRO User’s Manual (FAN 637.5). The UNT1100 Series is available in different hardware sets to suit different application needs. Table 2-1 lists the common features of the different hardware sets.

  • Page 10: Related Information

    Using the Operator Workstation Operator Workstation User’s Manual (FAN 634) Standards Compliance The UNT1100 Series complies with the following standards: • FCC Part 15, Subpart B, Class A • IEEE 472 • IEEE 587 Category A • UL 916, UL 864 (Listed) •...

  • Page 11: Configuring The Unt1100 Series

    Application Specific Controllers Technical Manual Chapter 3 Configuring the UNT1100 Series Introduction This chapter includes information about configuring the UNT1100 Series controller. This section describes how to: • define a UNT1100 in a Metasys Network • define a UNT1100 in N30 software ©...

  • Page 12: Key Concepts

    All UNT1100 series models require HVAC PRO software (Release 8.01 or later). This software tool configures, commissions, uploads, and downloads the UNT1100 Series database. Refer to the HVAC PRO User’s Manual (FAN 637.5) for more information on configuring the UNT1100 Series.

  • Page 13: Procedure Overview

    Configuring the UNT1100 Series Procedure Overview Table 3-1: Configuring the UNT1100 Series To Do This Follow These Steps: Define a UNT1100 in a Metasys In the Metasys Operator Workstation (OWS), Network open the Network Map and define the UNT1100 as a new object. Fill in the blank UNT1100 Series Definition attribute fields as required.

  • Page 14: Detailed Procedures

    UNT Controller Detailed Procedures Defining a UNT1100 in a Metasys Network To define a UNT1100 Series device object in a Metasys Network: Go to the Network Map on the Operator Workstation (OWS) and double-click a system name. On the Item menu, click New. The Item New dialog box appears (Figure 3-1).
  • Page 15 Configuring the UNT1100 Series Highlight UNT in the Add N2 Device dialog box as shown in Figure 3-2. Figure 3-2: Add N2 Device Dialog Box add_n2 Click OK. Complete the attribute fields in the UNT Definition window as shown in Figure 3-3.
  • Page 16 UNT Controller Figure 3-3: UNT Definition Window definition Note: Fill in the blank UNT1100 Series Definition attribute fields as required. Specify an N2 Device Address from 1 to 254. You may accept or change the default values in the remaining attribute fields. Table 3-2 explains the blank attribute fields.

  • Page 17: Defining A Unt1100 In N30 Software

    Configuring the UNT1100 Series On the Item menu, select Save to save the new UNT1100 Series object and add the object to the NCM database. Upload the NCM to make an archive copy of the new object. Refer to Uploading from the NCM in the Advanced User’s Guide section in the Operator Workstation User’s Manual (FAN 634).
  • Page 18 UNT Controller...

  • Page 19: Installing The Unt1100 Series

    Application Specific Controllers Technical Manual Chapter 4 Installing the UNT1100 Series Introduction This chapter describes how to: • mount the enclosure in an enclosure kit • install the UNT1100 in an AS-ENC100-0 Enclosure Kit • install the UNT1100 in an EWC10 Enclosure Kit ©...

  • Page 20: Key Concepts

    Information on available accessory devices is in the Ordering the UNT1100 Series 6363081johnson chapter of this user’s guide. Decide how close the UNT can be to the air handling equipment, while still allowing adequate room for installation and maintenance accessibility.

  • Page 21: Environmental Information

    Allow enough room to install an enclosure and conduit for wiring terminations to the controller. Power Line Wiring Transient Noise Precautions The standard UNT, when powered by any typical Johnson Controls separate isolation transformer or stepdown transformer, operates reliably in an electrical environment defined as Location Category A by the IEEE 587 Standard;...

  • Page 22: I/O And Communications Wiring Transient Noise Precautions

    UNT Controller Surge Levels The UNT exceeds the Category A specification by meeting these surge levels as well: IEEE-587 style Common Mode Pulse 3 kV IEEE-587 style Normal Mode Pulse 1.5 kV IEEE-472 style Common Mode Ringwave 1.5 kV IEEE-472 style Normal Mode Ringwave 500V When the controller is installed within 9m (30 ft) of electrical distribution panels or major bus and feeder systems in industrial...
  • Page 23 Installing the UNT1100 Series Grounding the UNT1100 with an Earth Ground Connection An earth ground connection to the common terminal of the UNT1100 series controllers is allowed for the 24 VAC power supply and the binary output (when set up for high side switching). If this earth ground connection exists, it must be at the transformer secondary common terminal only.

  • Page 24: Detailed Procedures

    UNT Controller Detailed Procedures Mounting the UNT in an Enclosure Kit To mount the UNT in an enclosure kit: Position the controller and enclosure on the proposed vertical mounting surface to ensure that the calculated mounting area is correct. Note: You can make precise distance measurements between controller terminals and sensor/actuator mounting points on the air handling equipment if the equipment is in place.

  • Page 25: Installing The Unt1100 In An Ewc10 Enclosure Kit

    Installing the UNT1100 Series Do not use this knockout. Otherwise, the controller will be in the way of the wiring. Top/Bottom Side UNT Enclosure (Cover) untencl Figure 4-1: Installing the UNT1100 in an ENC100 Enclosure Kit Installing the UNT1100 in an EWC10 Enclosure Kit...

  • Page 26: Troubleshooting

    • if applicable, the N2 connections are secure and labeled correctly • the UNT switches are appropriately positioned (refer to the Wiring the UNT1100 Series chapter of this user’s guide) • there are no unwanted earth ground connections to the controller...

  • Page 27: Isolation And Grounding Unt1100 Series Without An Earth Ground Connection

    Installing the UNT1100 Series Although a single earth ground connection to the common terminal of UNT1100 series controllers is allowed, you may not want to have one. The procedures described in the following directions may be used when no earth ground connections to the UNT are intended or to ensure that there is only one earth ground connection.
  • Page 28 4-10 UNT Controller...

  • Page 29: Wiring The Unt1100 Series

    Chapter 5 Wiring the UNT1100 Series Introduction This chapter includes information about wiring the UNT1100 Series controller, and details the special precautions and grounding procedures you must observe when installing the controller. WARNING: Risk of Electric Shock. Disconnect power supply before making electric connections.

  • Page 30: Key Concepts

    UNT Controller Key Concepts Power Source and Loads The power transformer used must comply with: • CSA 22.2 No. 205 • NEMA ICS 2, Part 2, 230 The power to each UNT1100 is from a Class 2 transformer. A Class 2 transformer must be limited to 4 amperes or less.
  • Page 31 Wiring the UNT1100 Series • Any individual binary output (relay) drives up to 2 amperes at 24 VAC. You must limit the power draw of a controller and its loads to avoid heat dissipation problems. The total 24 VAC power draw of a UNT installed in an ENC100 or similar size box must be limited to a maximum of 40 VA.
  • Page 32 UNT Controller Note: The 24 V power transformer must be UL/CSA listed as NEC Class 2 Power Limited. See NEC Article 725/Class 2 (30 VRMS maximum) and (100 VA maximum). The UNT1100 draws 10 VA without actuators or other loads. The number of UNT1100s per transformer is dependent on the binary output loads and actuators.
  • Page 33 Wiring the UNT1100 Series Power Wiring Layout When you use a single transformer to supply 24 VAC to multiple UNT1100s, use wire gauge large enough for the load. The voltage drop on the 24 VAC cabling is much larger than for line voltage wiring for the same power draw.
  • Page 34 UNT Controller < 88 ft of 14 AWG > 24 VAC 100 VA All Eight UNTs are at one end. 100 VA 24 VAC < 176 ft of 14 AWG > < 176 ft of 14 AWG > Transformer is centered. Cable_lg Figure 1: 100 VA Power Cable Lengths Note:...

  • Page 35: Wiring Precautions

    Wiring the UNT1100 Series Table 5-4: Maximum Cable Length for Given Power/Gauge (U.S. Measurements) Cable Size Power (VA) at 8 Gauge 10 Gauge 12 Gauge 14 Gauge 16 Gauge 18 Gauge End of Wire Cable Length (Feet) 3520 2200 1400...

  • Page 36: Grounding And Isolation For Unt1100

    UNT Controller • Do not run N2 Bus, Zone Bus, Analog Input (AI), Binary Input (BI), Analog Output (AO), or Binary Output (BO) wiring in the same conduit or bundle as line voltage wiring (30 VAC or above), or wiring that switches power to highly inductive loads such as contactors, coils, motors, or generators.
  • Page 37 Wiring the UNT1100 Series Optional Earth Ground Optional Earth Ground Optional Earth Ground Figure 5-2: Wiring Diagram for UNT1100...
  • Page 38 Connection of more than one earth ground could damage other connected equipment. (Approved 05/04) Power Transformer Isolation 24 VAC to 24 VAC isolation transformers for UNT1100 Series controllers are not mandatory. Load Isolation There are two methods of isolating the load power supply (see Figure 5-3): 1.
  • Page 39 Wiring the UNT1100 Series 5-11 Method 2 Method 1 Unit Power Load Transformer Load Transformer Transformer Jumper in Contactor Open Position Contactor Optional Ground BO OUT Jumper Options OPEN AI Switches Job Information N2 Address RECV XMIT Install Jumper to...

  • Page 40: Terminal Designations

    5-12 UNT Controller CAUTION: Risk of Property Damage. You may have a maximum of one single earth ground connection, which must be at the transformer secondary common, whether one or multiple controllers are powered by the same transformer. Connection of more than one earth ground could damage other connected equipment.
  • Page 41 Wiring the UNT1100 Series 5-13 Table 5-6: UNT1100 Terminal Identification (Bottom Terminals Left to Right) Terminal Identification UNT1100 Description Analog Input 1 AI CM Analog Input Common Analog Input 2 AI CM Analog Input Common Analog Input 3 AI CM...
  • Page 42 5-14 UNT Controller Table 5-7: UNT1100 Terminal Identification (Top Terminals Left to Right) Terminal UNT1108 UNT1126 UNT1144 Description BO8, Relay Normally Open AO1 Signal OUT8 AO CM AO CM BO8, Relay Center Contact AO1 Common (space) (space) BO8, Relay Normally Closed (not used) BO7, Relay Normally Open AO2 Signal...

  • Page 43: Analog Inputs

    Wiring the UNT1100 Series 5-15 Analog Inputs The six analog input terminals, their power supply, and their common points occupy the lower left corner of the controller. These inputs are one of two types: resistive or voltage. A pair of DIP switches configures the analog input for the desired type.
  • Page 44 The UNT has one set of DIP switches for configuring the analog input points. Use Table 5-9 to set analog input DIP switches. Instructions for setting the N2 Address DIP switches are in the UNT1100 Series Installation Bulletin (Part No. 24-9534-7).

  • Page 45: Binary Inputs

    Six binary inputs on the controller are located at the right of the lower terminal strip. The binary inputs on the UNT1100 Series controllers are inactive when open or connected to UNT common. When a binary device closes to complete a binary circuit, the BI SRC terminal provides the 24 VAC, which, in turn, activates the input.

  • Page 46: Analog Outputs

    5-18 UNT Controller The terminal labeled SRC on the controller is the internal shared node of each relay output (see Figure 5-6). When connecting this terminal (via the wire jumper) to 24 VAC for high side switching, each load must be connected between the binary output N.O. terminal and the common terminal of the transformer.

  • Page 47: Wiring To Rly050/002 Relays

    Wiring the UNT1100 Series 5-19 Wiring to RLY050/002 Relays Connect power to the relay module and the transformer through the conduit knockouts in each box. Wire the module according to Figure 5-7. For a schematic diagram of the relay module, see the Air Handling Unit (AHU) Controller Technical Bulletin (LIT-6363010), Appendix A: AHU Tower, AHU Tower Wiring Details section.
  • Page 48 5-20 UNT Controller BO OUT Jumper Options 24 VAC 110 VAC OPEN AI Switches Job Information N2 Address RECV XMIT OPEN (UP) 1 2 3 4 5 6 7 8 ADDR 0 = ALL OPEN RY10029 Rev J (See High Note 1.) Voltage Voltage...

  • Page 49: Wiring Sensors And Actuators

    Wiring the UNT1100 Series 5-21 You can obtain a Double-Pole, Double-Throw (DPDT) relay configuration by connecting the BO signal to two terminals on the relay kit terminal block (for example, B and C). If you require a phone jack at a remote relay kit, add an AS-CBLCON-0.
  • Page 50 5-22 UNT Controller Table 5-11: Sensor Wire Sizes and Maximum Lengths Sensor Type 18 AWG Wire Size Run 24 AWG Wire Size Run Length In Meters (Feet) Length In Meters (Feet) AI Temperature (Resistive) 152.4 m (500 ft) 30.5 m (100 ft) AI Voltage 152.4 m (500 ft) 30.5 m (100 ft)
  • Page 51 Wiring the UNT1100 Series 5-23 BO OUT Jumper Options OPEN AI Switches Job Information N2 Address RECV XM IT OPEN (UP) 1 2 3 4 5 6 7 8 ADDR 0 = ALL OPEN RY10029 Rev J CAUTION: Risk of Property Damage. If...
  • Page 52 To make all necessary wiring terminations between the UNT and TE-6700 Series sensor, use phone cable that has pre-terminated 8-pin RJ-45 connectors. For cable ordering information, refer to Ordering Information for Outside Vendors in the Ordering the UNT1100 Series chapter of this user’s guide.
  • Page 53 When using the TE-6700 sensor, do not move the hardware point assignments in the HVAC PRO software. For information on cables, refer to the Ordering Information for Outside Vendors in the Ordering the UNT1100 Series chapter of this user’s guide.

  • Page 54: Detailed Procedures

    5-26 UNT Controller Detailed Procedures Connecting HE-6300 Humidity Sensor To connect an HE-6300 humidity sensor to the UNT1100: 1. Set the analog input DIP switches on the AS-UNTxxx board to 10 volts (Figure 5-11): 2. Switch 1 = ON 3. Switch 2 = OFF 4.

  • Page 55: Troubleshooting

    5-27 Troubleshooting Internal Thermal Protection The UNT1100 Series products have internal circuit protection from accidental shorts or overloads. Any shorted BI_SRC terminal or short to the 24 VAC, which is available on the 8-pin RJ-45 phone jack, can cause the circuit protection to trip as current draw on the source increases with each addition to the load.

  • Page 56: Chapter 6 Downloading And Commissioning The Unt1100 Series

    Commissioning the UNT1100 Series Introduction This section describes what you need to know when downloading and commissioning a UNT1100. This chapter describes: • commissioning via Zone Bus • commissioning via N2 Bus © January, 2001 Johnson Controls, Inc. www.johnsoncontrols.com Code No. LIT-63630836...

  • Page 57: Key Concepts

    UNT Controller Key Concepts Commissioning Procedures Commissioning a UNT begins after the unit is mounted and wired, and the control and hardware/software features have been defined through HVAC PRO software. Refer to the HVAC PRO User’s Manual (FAN 637.5) for complete controller configuration and commissioning information.

  • Page 58: Troubleshooting

    Troubleshooting There are some errors that may occur while using the HVAC PRO commissioning tool with the UNT1100 Series over the Zone Bus. The cause of the error is often a loose or improper connection between the CBLPRO (AS-CBLPRO), laptop PC, and the controller. A defective COM port on the laptop, or a defective controller could also be at fault.
  • Page 59 UNT Controller...

  • Page 60: Chapter 7 Ordering The Unt1100 Series

    Application Specific Controllers Technical Manual Chapter 7 Ordering the UNT1100 Series Introduction This chapter lists ordering information for the UNT1100 and related Johnson Controls products as well as information on ordering accessories from outside vendors. © January, 2001 Johnson Controls Inc. www.johnsoncontrols.com...

  • Page 61: Key Concepts

    UNT Controller Key Concepts Ordering Information for Johnson Controls This section includes code numbers and descriptions for the UNT1108/1126/1144 and accessory equipment. Controllers Use Table 7-1 to order controllers and accessory equipment. Table 7-1: UNT1100 and Accessory Equipment Code Description...
  • Page 62 Ordering the UNT1100 Series Dampers and Valve Actuators Use Table 7-3 to order controllers and accessory equipment. Table 7-3: UNT1100 Dampers and Valve Actuators Code Number Description Type VA-7152 Series Valve Actuator 0 to 10 VDC Proportional VA-7202 Series Valve Actuator...
  • Page 63 UNT Controller Accessories Use Table 7-4 to order controllers and accessory equipment. Table 7-4: UNT1100 Accessories Code Number Description Type AP-TBK1002-0 Removable 2-position Screw Terminal Kit (100 pcs) AP-TBK1003-0 Removable 3-position Screw Terminal Kit (100 pcs) AS-CBLPRO-2 HVAC PRO Cable AS-ENC100-0 Enclosure for UNT1100 Sheet Metal...

  • Page 64: Ordering Information For Outside Vendors

    Ordering the UNT1100 Series Ordering Information for Outside Vendors The following tables list preconfigured cables and cable components available from CSC Southwest Wire and Windy City Wire. CSC Southwest Wire Use Table 7-5 to order preconfigured cables from CSC Southwest Wire.
  • Page 65 UNT Controller Windy City Wire Use Table 7-7 to order preconfigured cables from Windy City Wire. Table 7-7: Preconfigured Cables, Windy City Wire Description Cable Length Part Number RJ45 Straight-through Cable 7.62m (25 ft) CBL-STAT25-WC Assembly Plenum • Non keyed plugs 15.24m (50 ft) CBL-STAT50-WC •...

  • Page 66: Specifications

    Ordering the UNT1100 Series Specifications Table 7-9: Specifications Product AS-UNT1108-0 AS-UNT1126-0 AS-UNT1144-0 Power Requirements 24 VAC, 50/60 Hz at 40 VA (per typical system), 8 VA for controller alone with comm module. Ambient Operating -40 to 60°C (-40 to 140°F)
  • Page 67 UNT Controller...

  • Page 68: Appendix A Application Examples

    Default answers are accepted for configuration questions not included in this appendix. Refer to the HVAC PRO User’s Manual (FAN 637.5) for detailed information regarding controller configuration. The UNT1100 series controller was used in all examples. Refer to UNT Applications Application Note (LIT-6375100) for additional examples and configuration information.
  • Page 69 UNT Controller Key Concepts Fan Coil Table A-1 lists the selections made through HVAC PRO software for the example in Figure A-1. Table A-1: Fan Coil Parameters and Configuration Selections HVAC PRO Parameters Configuration Selections Heating Type Two-Pipe Common Htg/Clg Coil (Prop) Lighting Integration Return Air...
  • Page 70 Application Examples 24 VAC Lighting Relay Relay 1 AC 2 COM 24 VAC 3 IN+ XFR50 BO OUT Jumper Options 24 VAC 120 VAC OPEN SRC to COM Jumper AI Switches Job Information N2 Address Low Side Switched RECV XMIT OPEN (UP) 1 2 3 4 5 6 7 8...

  • Page 71: Unit Vent

    UNT Controller Unit Vent Table A-3 lists the selections made through HVAC PRO software for the example in Figure A-3. Table A-3: Unit Vent Parameters and Configuration Selections HVAC PRO Parameters Configuration Selections Control Cycle ASHRAE Cycle 2 Economizer Changeover Dry Bulb Heating Type Proportional...
  • Page 72 Application Examples Relay PNEUM XFR50 BO OUT Jumper Options OPEN AI Switches Job Information N2 Address SRC to 24 VAC BOs RECV XMIT High Side Switched OPEN (UP) 1 2 3 4 5 6 7 8 ADDR 0 = ALL OPEN RY10029 Rev J TE1* RM-SP...

  • Page 73: Packaged Rooftop

    UNT Controller Packaged Rooftop Table A-5 lists the selections made through HVAC PRO software for the example in Figure A-5. We recommend that packaged rooftop applications have separate transformers for controller and loads. Sharing of transformers for controller and loads for packaged rooftop wiring is not recommended.
  • Page 74 Application Examples XFR50 24 VAC 120 VAC Unit Terminal Strip = Cooling-Stage 2 = Cooling-Stage 1 = Heat-Stage 2 = Heat-Stage 1 = Indoor Blower = Equipment 24 VAC = Equipment Ground XFR50 BO OUT Jumper Options 120 VAC 24 VAC OPEN AI Switches Job Information...

  • Page 75: Heat Pump

    UNT Controller Bill of Materials Table A-6: Packaged Rooftop Bill of Materials Component Part Number Digital Controller AS-UNT11xx-0 Zone Temperature Sensor TE-6700 Series Discharge Air Sensor TE-6300 Series Outdoor Air Sensor TE-6300 Series Air Flow Switch P32 Series DA1 Damper Actuator M110CGA-2 For more information on rooftop installations, refer to Appendix B Precautions for Rooftop Installations6363081apndxaenviron in this...
  • Page 76 Application Examples XFR50 24 VAC 120 VAC Unit Terminal Strip = Heating-Stage 2 = Heating-Stage 1 = Reversing Valve = Compressor = Indoor Blower = Equipment 24 VAC = Equipment Ground BO OUT Jumper Options OPEN SRC to 24 VAC Jumper AI Switches Job Information N2 Address...

  • Page 77: Lead/Lag Pump Sequence

    A-10 UNT Controller Lead/Lag Pump Sequence Table A-9 lists the selections made through HVAC PRO software for the example in Figure A-9. Table A-9: Lead/Lag Pump Sequence Parameters and Configuration Selections HVAC PRO Parameters Configuration Selections Pump Enable Strategy Binary Input Lead Pump Selection Hardware Pump Status Monitoring...
  • Page 78 Application Examples A-11 Alarm Pump B Pump A Relay Relay Relay XFR50 BO OUT Jumper Options OPEN AI Switches Job Information N2 Address SRC to COM Jumper RECV XMIT OPEN (UP) 1 2 3 4 5 6 7 8 ADDR 0 = ALL OPEN RY10029 Rev J Enable Flow...
  • Page 79 A-12 UNT Controller...

  • Page 80: Appendix B Precautions For Rooftop Installations

    Appendix B Precautions for Rooftop Installations Introduction This appendix includes information about precautions for installing the UNT1100 Series controller on a rooftop. It also describes how to install a UNT1100 in a rooftop unit. © January, 2001 Johnson Controls, Inc. www.johnsoncontrols.com...

  • Page 81: Key Concepts

    10 and 90%. • The temperature for the UNT1100 controllers must be between -40 and 70°C (-40 and 158°F). The UNT1100 series controllers have conformally coated circuit assemblies. Electrical Noise in Rooftop Units Rooftop air handling units may be very noisy from an electrical standpoint.
  • Page 82 Precautions for Rooftop Installations Table B-1: Recommended Filters Vendor Type Newark Stock Number Corcom 3VB1 81F4523 Corcom 81F4523 Corcom 3VK1 81F4542 Corcom 81F4542 Note: These filters are all rated 3A, 120/250V, and are available from Newark Electronics. These models are specified for derating with an unbalanced load.
  • Page 83 UNT Controller Figure B-1: UNT Directly Driving Loads...

  • Page 84: Considerations For Specific Rooftop Units

    Lennox models, it may also cause blower fan dropout or cycling that appears as abnormal operation to the customer. Lennox has authorized bypassing K25 blower control when you use Johnson Controls UNTs. York® Rooftop Units UNT1100 controllers, when installed in rooftop units, may experience nuisance resets.
  • Page 85 UNT Controller Table B-2: York Rooftop Unit Serial Number/Date Conversion Second Digit Month Third Digit Year...

  • Page 86: Procedure Overview

    Precautions for Rooftop Installations Procedure Overview Table B-3: Installing a UNT1100 in a Rooftop Unit To Do This Follow These Steps: Install a UNT1100 in a Rooftop Mount the controller inside the rooftop unit or Unit another enclosure. Install a transformer. Isolate any especially noisy outputs with a pilot relay.

  • Page 87: Detailed Procedures

    We recommend using one of the following transformer types: Table B-4: Recommended Transformers Transformer Type Power Description Johnson Controls Y65 Series 40 VA 120 VAC to 24 VAC Johnson Controls AS-XFR050-0 50 VA 120 VAC to 24 VAC (insulated...

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