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Unitary (UNT) Controller 1100 Series User`s Guide

1. 5 9 r Typical Power Connection Typical Binary Typical Resistive Input Connection Analog Input Connection DAK on BI BI Alt Al2 24 VAC BI4 BISRC BI2 AI1 AICM AI2 AICM 50 60 Hz fae W36 W37 wa wi w2 ws we W49 W56 24 VAC Pressure E W52 W55 Switch Potentiomet oe W35 COMMON otentiometer dee Ga ze E 1K Nickel V Optional Earth Temperature PWR s Ground Sensor r Typical Voltage Analog Input Connection Typical Analog Output Connection CAAA YY An Al2 Se 24 VAC An AICM AG AICM 15VDC 4 Proportional 50 60 Hz Valve Actuator WI w2 P T W25 wag ii i AO1 AOCM W56 24VAC Differential Humidity W55 Pressure Sensor W3 W4 ee em COMMON Sensor 0 10V AO1 EX S 0 2V i OQ SRC Optional Earth PWR Ground Typical Binary Output Connection DAK R YY 24 VAC f 50 60 Hz Heating W14 W18 W19 W20 W23 W24 Cooling W49 d l W56 24 VAC Factory gt Jumper Jumper Jumper W52 W55 COMMON Om O mm 4 BO Jumper a BO6 BO5 in SRC position ane rd Ki Optional Earth 0 JL PWR Ground Figure 5 2 Wiring Diagram for UNT1100 transf
2. Jumper Jumper Jumper N2 Address i JEE METASYS eg gh AS UNT11xx IHE LE LLL PURIN anao cap CLASS 2 ODT UV ZA ASS S Hor DUTY RY10029 Rev J J HNSON CONTROLS UNT1100b Figure 2 1 UNT1100 Controller Introduction to the UNT1100 Series 2 3 You can use the UNT1100 for unit ventilator rooftop heat pump or fan coil applications or as a generic I O multiplexer and I O sideloop control 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 Table 2 2 lists the differences by model Table 2 1 UNT1100 Series Hardware Characteristics Similarities Among Models Characteristic Description 6 Analog Inputs e RTD temperature elements 1000 ohm nickel platinum or silicon e Adjustable 0 to 2k ohm setpoint potentiometers e Oto 10 VDC or 0 to 2 VDC transmitters 6 Binary Inputs e 6 24 VAC input e Momentary pushbutton from Zone Sensor for temporary occupancy mode BI5 e Bl4 may be used as an accumulator input for frequencies less than 2 Hz N2 Bus Isolated Zone Bus e Light Emitting Diode LED Indication e 8 pin pho
3. Low High See Voltage 1 P voltage Note 1 See Note 3 SR A COM NC LA KE NO cc B79 COILS B COM TRIAC NC HAND HOA PERS COM See Note 5 AS RLY050 0 AS RLY002 0 Separate low voltage wiring on the left from line voltage wiring on the right Hand operation using the H O A switch requires common to the COILS terminal and 24 VAC to the TRIAC terminal to energize the relay The Hand or Off position signals the binary input connected to those terminals These switches can be hardwire OR ed and connected to one BI This switch uses the HOA COM terminal which is isolated from the relays Your application will determine exact connections to UNT HOA COM must be connected to one of the BI SRC terminals UNSERE Figure 5 7 UNT1100 Wired to RLY050 002 with Electrically Isolated BOs 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 O0 Wiring Sensors and Actuators Use 18 AWG twisted pair wire for all sensor and output wiring Shielding is not required However if you decide to use it earth ground the shield at the transformer Remember that you may have either no earth ground connection or one earth ground connection which must be at the transformer secondary common You may
4. Comm Disabled M NC Name NC63 Hardware N2 Flags Graphic Symbol NC Trunk Number Auto Dialout NI Operating Instr Device Address Poll Priority Device Type UNT 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 The Operator Workstation User s Manual FAN 634 describes the general procedures for entering and modifying data Table 3 2 Blank UNT1100 Series Object Attributes Attribute Description Entry Values Object Name Identifies the object e UNT1108 1 to 8 alphanumeric The object name cannot be characters duplicated in the system Expanded ID Further identifies the object 0 to 24 alphanumeric i e Garage Level Heater characters optional Configuring the UNT1100 Series 3 7 8 On the Item menu select Save to save the new UNT1100 Series object and add the object to the NCM database 9 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 Defining a UNT1100 in N30 Software To define a UNT1100 Series device object in N30 software refer to the Object Dictionary FAN 694 3 8 UNT Controller Application Specific Contr
5. 5 4 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 The actuators and relay loads must be added to the 10 VA of the controller then divided into the 100 VA transformer power For example the UNT1100 draws 10 VA without loads If there were two VA 8020 valve actuators per UNT1100 its 8 VA 4 VA times 2 must be added to the UNT1100 for a total of 18 VA Then five UNT1100 with two VA8020 s each could be powered from one 100 VA transformer As more loads are added to each UNT the 100 VA transformer may only power one or two UNTs When you use a 40 VA transformer the limit is two UNTs but the same rules apply Table 5 2 shows the power rating for each valve actuator The actuator power plus the UNT1100 power must not exceed 100VA If a device is not listed in the following table refer to the product literature for the specific device Table 5 2 Actuator VA Power Rating Actuator Type Power Rating VA 8020 Incremental 4VA VA 8050 Incremental 6 VA VA 8090 Incremental 76 VA J Series Electric Zone Valve On Off 7VA VA 8122 Voltage 0 to 10 VDC 4VA VA 8052 Voltage 0 to 10 VDC 6 VA VA 8092 Voltage 0 to 10 VDC 6 VA Lighting relay 42 VA for 50 ms VA
6. e 24 VAC 120 VAC L COM Y2 Cooling Stage 2 Unit Terminal Strip ln Y1 Cooling Stage 1 W2 Heat Stage 2 y2 WI W2 Wi G R B W1 Heat Stage 1 G Indoor Blower R Equipment 24 VAC B Equipment Ground XFR50 Wi4 W18 NO 24 VAC 120 VAC SRC Jumper Removed METASYS AS UNT1126 0 rr n pH LE PWR IN 24VAC BVA CLASS 2 BIN OUT 24VAC CLASS 2 PILOT DUTY RY10029 Rev J JBHNSON CONTRE TE2 TE1 81 TE3 Room rL R Sensor oY Qv B ON Preferred DIP Switch Position for aj _ m TE 6700 Room Sensor 123 prwire Figure A 6 Packaged Rooftop Wiring Example with Separate Transformers for Controller and Loads A 8 UNT Controller Bill of Materials Table A 6 Packaged Rooftop Bill of Materials Component Part Number C1 Digital Controller AS UNT11xx 0 TE1 Zone Temperature Sensor TE 6700 Series TE2 Discharge Air Sensor TE 6300 Series TE3 Outdoor Air Sensor TE 6300 Series S1 AirFlow Switch P32 Series DA1 Damper Actuator M110CGA 2 For more information on rooftop installations refer to Appendix B Precautions for Rooftop Installations636308 l apndxaenviron in this user s guide Heat Pump Table A 7 lists the selections made through HVAC PRO software for the example in Figu
7. CBL STAT75 SW e 8 Conductor 30 48m 100 ft CBL STAT100 SW e Solid Wire Use Table 7 6 to order cable components available from CSC Southwest Wire for creating your own cables Table 7 6 Cable Components CSC Southwest Wire Description Part Number 304 8m 1000 ft Roll of Plenum Rated CBL 24 NAT SW e 24 AWG e 8 Conductor e Solid Wire RJ45 Modular Plugs 100 pcs S100710 Economy Crimp Tool S104012 Premium Crimp Tool S104015 Twisted Pair Easy Strip Tool S104020 7 6 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 RJ45 Straight through Cable 7 62m 25 ft Assembly Plenum e Non keyed plugs 15 24m 50 ft e 24 AWG 22 86m 75 ft e 8 Conductor 30 48m 100 ft e Solid Wire Part Number CBL STAT25 WC CBL STAT50 WC CBL STAT75 WC CBL STAT100 WC Use Table 7 8 to order cable components available from Windy City Wire for creating your own cables Table 7 8 Cable Components Windy City Wire Description 304 8m 1000 ft Roll of Plenum Rated e 24 AWG e 8 Conductor e Solid Wire RJ45 Modular Plugs Premium Economy Crimp Tool Twisted Pair Easy Strip Part Number CBL 24 8STAT WC S100710 S104012 S104020 Specifications Ordering the UNT1100 Series 7 7 Table 7 9 Specifications Product Power Requirements Ambient Operating Conditions Ambient Storage Conditions Dim
8. To install the UNT1100 in an EWCIO Enclosure Kit 1 Position the terminals of the UNT toward the low voltage wiring trough located on the left side of the enclosure 2 Align the three mounting holes in the base of the controller with the holes in the backbone of the enclosure On the side with four mounting holes use the two outside holes for mounting in the EWC 3 Secure the controller with three No 8 x 1 in screws For best results use a Plastite type thread A thread forming or sheet metal type thread may also be used 4 8 UNT Controller Troubleshooting Tools Needed Tools needed for typical troubleshooting include ASC and N2 Bus Networking and Troubleshooting Guide Technical Bulletin LIT 6363003 Digital Multimeter DMM 100k ohm resistor optional Double banana plug see Figure 4 2 available from a local electronics store or ITT Pomona Stock No 34F856 or 34F845 100k ohm 1 4 watt resistor for earth ground voltage tests 100k ohm 1 4 watt Use double banana plug for all tests that require a 100k ohm resistor placed in parallel with DMM Steps 1 Connect 100k ohm resistor under plug s prongs 2 Insert banana plug into DMM 3 Connect leads of DMM into banana plug banana Figure 4 2 Double Banana Plug Used with 100k Ohm Resistor Installation Checkout Review the mounted UNT1100 and compare it with the appropriate illustrations in the Detailed Procedures section in th
9. or a wire nut could connect two heavy wires to a short 6 inch 150 mm thinner wire Optional screw terminals can be assembled over the spade lugs Table 5 3 The screw terminals accept up to a single 12 AWG 4 mm wire or two 14 AWG 2 5 mn wires Table 5 3 Optional Screw Terminals Option Description Screw Terminal Kit AP TBK1002 0 Removable 2 position screw terminal kit 100 pcs AP TBK1003 0 Removable 3 position terminal kit 100 pcs AP TBK4N2 0 Replacement N2 Bus 4 position screw terminal kit 10 pcs Terminals fit over the existing I O spade lugs 5 6 UNT Controller lt 88 ft of 14 AWG gt All Eight UNTs are at one end 100 VA NNNNA lt 176 ft of 14 AWG gt Transformer is centered Cable lg Figure 1 100 VA Power Cable Lengths Note The standard 14 AWG 2 5 mn cable top example in Figure 1 is limited to 88 feet 27 M with six UNT1100s consuming 12 VA each all at one end of the cable If the transformer is centered bottom example in Figure 1 with three UNT1100s on the left and three UNT1100s on the right the distance in each direction can be increased This is because the current and voltage drop are halved In this example both the left and the right legs could be increased to 176 feet 53 m from the transformer creating a 352 foot 108m total length For longer cable runs at a given wire size multiple legs can extend the distance Four legs would only consume 25 VA per leg
10. 7450 Incremental 2 5 VA VA 7452 Voltage 0 to 10 VDC 2 5 VA VA 7050 Thermal DAO 3 VA VA 7310 Incremental 2 VA VA 7312 Voltage 0 to 10 VDC 2 VA VA 7010 On Off 7 VA VA 7152 Proportional 4 7 V VA 7202 Proportional 705 VA M120 M140 M150 Non spring Return 20 VA Voltage 0 to 10 VDC M110 M130 Spring Return 25 VA M9100 Non spring Return 7 5 VA Voltage 0 to 10 VDC M9200 Non spring Return 12 VA Voltage 0 to 10 VDC M9220 20 VA Do not schedule all lights on one transformer to turn on at the same time The current surge on the transformer could open the circuit breaker Wiring the UNT1100 Series 5 5 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 For example a 100 VA equivalent to 100 watt load at 120 VAC consumes only 0 8 amperes However at 24 VAC you need 4 amperes Current draw determines the wire size Therefore a 100 VA load requires 88 feet of 14 AWG 140 cable feet needs 12 AWG and 222 feet needs 10 AWG with all loads at one end To handle the large wires two connection methods are available spade lugs or optional screw terminals Individual spade lugs accept a single 10 to 22 AWG 4 mn to 0 8 mm wire and still fit on 1 4 inch 6 mm tabs When two wires are crimped into one spade lug a larger spade lug barrel is needed
11. L SOUOUMS payenjoe MOJ 10 eunsseJd ommgeoduet eq Ajenjoe Aew Saus AU eseuj Pun doyoo ay uo Hulpuedeq z 30N 40 yur jueuidinb3 ely Plo K J eu1e1xe 40 jeuiqeo Buui sun doyoo eui uiui pesn ji Aeje1 Jojid Aue pue LN eur Wunou Aew NoA 30N e e LLL Lafe zebDeis JeuuojsueJ Neh pepunouc 8 yA L seo SS eur j t peo ow va oDels z 5 8 H LM ZM TF TN mm ous i ae SN 299ue7 jS Sum lul d C e puedo AjeuuowN4 LO so pepunouJc Wes ech LM uedo AjeuuoN Zog sisse AN ISSEUD m Ydo AjeuuoN sog Se UOWILUOD a gt TR vog VES N ON J0 oejuoo o Se T l xdg OWA vz SHL PN oto is e 1 KS LA uedo AjeuuoN SOg LH en RS o ZA uedo AjeuuoN 908 j031u02 uoniub Jeujeg pue J01981u02 209g Jo U MJ Sai F ain E j E 8 n04 IM JC HOUS Jeziuouo 3 L lt edo unt 808 NI saweg eur iE peo ee EN JOWJOJSUB peppy ND uonoos Io sec jeuiqe DUU yun doyooy Loads tly Driving Irec UNT D Figure B 1 Precautions for Rooftop Installations B 5 Considerations for Specific Rooftop Units Take the following information into consideration for specific rooftop units Lennox GCS16 Series Rooftop Units For Lennox GCS 16 series rooftop units bypass the K25 blower fan delay relay TDR by disconnecting the K25 coil power wire Lennox provides K25 blower control for use with electromechanical thermostats The reason for disconnecting this when a UNT provides the blower control functions is that the K2
12. No LIT 63630838 A 2 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 Heating Type Lighting Integration Configuration Selections Two Pipe Common Htg Clg Coil Return Air Discharge Air gt Ry In VA TE fcmech Figure A 1 Fan Coil Mechanical Flow Diagram Application Examples A 3 24 VAC R1 Lighting Fan VA1 Relay Relay 1 AC ON IN 2 COM COM 24 VAC 3 IN OFF 4 XFR50 e 24 VAC 120 VAC SRC to COM Jumper A Low Side Switched ww METASYS Dus AS UNT1126 0 EHI LLU PWR IN 24VAC 8VA CLASS 2 BIN OUT 24VAC CLASS 2 PILOT DUTY RY10029 Rev J Sensor ul O N Preferred DIP Switch Position for _ m TE 6700 Room Sensor 123 fewire Figure A 2 Fan Coil Wiring Example Bill of Materials Table A 2 Fan Coil Bill of Materials Component Part Number C1 Digital Controller AS UNT11xx 0 TE1 Zone Temperature Sensor TE 6700 Series VA1 Valve Actuator VA 8052 Valve Actuator Assembly R1 Lighting Relay GE RR7 A 4 UNT Controller Unit Vent Table A 3 lists the selections ma
13. SPDT 5A 240 VAC with enclosure AS RLY100 1 Relay Kit 4 SPDT 5A 240 VAC with enclosure AS XFR050 0 Transformer 50 VA 120 to 24 VAC AS XFR010 1 Transformer 100 VA AS TBKIT 0 Replacement N2 Bus and Five N2 Bus and Power Terminal Block Five Power Terminal Connectors Blocks AS ZTU100 1 Zone Terminal N A EN EWC10 0 Enclosure for UNT optional UPM Plastic EN EWC15 0 Enclosure with 50 VA UPM with 50 VA Transformer MM CVT101 0 RS 232 RS 485 Converter for N A N2 Download Commissioning with HVAC PRO Software P32 Series Air Flow Switch N A TE 6001 961 Momentary Button Kit for N A Temporary Occupancy or Boost Modes for TE 6100 11 12 only WS WINPRO 0 HVAC PRO Software N A WS WINPRO 6 HVAC PRO Software N A Upgrade Y65XX X Series Transformer 24 120 220 277 480 VAC to 24 VAC The AS ZTU100 1 supports the AS UNT11xx 0 AS UNTxxx 0 AS UNTxxx 1 and AS UNTxxx 2 models The AS ZTU100 0 supports AS UNTxxx 0 models only Ordering the UNT1100 Series 7 5 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 Table 7 5 Preconfigured Cables CSC Southwest Wire Description Cable Length Part Number RJ45 Straight through Cable 7 62m 25 ft CBL STAT25 SW Assembly Plenum e Non keyed plugs 15 24m 50 ft CBL STAT50 SW e 24 AWG 22 86m 75 ft
14. W1 W2 W5 W6 W10 W11 W12 W15 W16 W17 W21 W22 W25 W26 W27 W31 W32 W36 W37 W38 W42 W43 W46 W47 W48 W53 UNT1100 Alt AI CM Al2 AI CM AI3 AI CM Al4 AI CM AIS AI CM Al6 AI CM 15 VDC 15 VDC COM ZB BI SRC Bl1 BI SRC Bl2 BIS BI SRC Bl4 BIG BI SRC BI7 Description Analog Input 1 Analog Input Common Analog Input 2 Analog Input Common Analog Input 3 Analog Input Common Analog Input 4 Analog Input Common Analog Input 5 Analog Input Common Analog Input 6 Analog Input Common 15 Volts DC Output 15 Volts DC Output 24 VAC Common Zone Bus Input Common 24 VAC Binary Input 1 Input Common 24 VAC Binary Input 2 Binary Input 3 Input Common 24 VAC Binary Input 4 Binary Input 6 Input Common 24 VAC Binary Input 7 BI SRC signal is 24 VAC Class 2 output Binary Input 5 is internal to the controller 5 14 UNT Controller Table 5 7 UNT1100 Terminal Identification Top Terminals Left to Right Terminal W3 WA W7 ws W9 W13 W14 W18 W19 W20 W23 W24 W28 W29 W30 W34 W35 W39 W40 W41 W44 W45 W50 W51 W52 W49 W56 w55 UNT1108 NOS OUT8 NC8 NO7 OUT7 NC7 NO6 OUT6 NC6 NO5 OUT5 NC5 NO4 OUT4 NC4 NO3 OUT3 NC3 NO2 OUT2 NC2 NO1 OUT1 NC1 SRC 24 VAC 24 VAC COM UNT1126 AO1 AO CM space AO2 AO CM space NO6 OUT6 NC6 NOS OUT5 NC5 NO4 OUT4
15. also use 24 AWG wire in some applications but maximum wire length will be reduced due to the increased resistance To minimize sensor error caused by field wiring the total resistance of all resistive sensor wiring should be less than 3 0 ohms Note For Nickel and Platinum temperature sensors a 1 F error occurs for every 90 feet of 22 AWG cable A CAUTION Risk of Property Damage Do not run low voltage cable in the same conduit or wiring troughs with line voltage wires Running low and line voltage wires in the same conduit or wiring troughs may damage the equipment or cause system malfunction Table 5 10 Input and Output Load Impedances Function Range DC Input Sensor or Impedance Load Impedance DC Supply 15 18 VDC at 50 mA N A 162 10 M ohm Inputs Al Voltage 0 2V or 0 10 VDC 470 k ohm 0 5 k ohm Al Temperature 1000 ohm Si Ni Pt or 0 2 k ohm 3540 ohm 0 2 k ohm Potentiometer Potentiometer BI VAC 60 Hz 0 24 VAC 2 5 V threshold 9 8 k DC ohm 0 5 k ohm 6 2 k AC ohm Outputs AO Voltage 0 10 VDC 10 mA maximum N A 1 k 10 M ohm BO VAC Relay AC 24 V 2 A maximum 15 A inrush N A 12 48 0 ohm PF 0 6 min DC 10 28 V 0 5 A maximum 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 Al Temperature Resistive 152 4 m 500 ft 30 5 m 100 ft Al Voltage 152 4 m 500 ft 30 5 m 100 ft BI Voltag
16. device P N RG1782 6 or RG2031 6 You may connect the UNT1100 power transformer secondary directly to earth ground If you elect to do so the grounded side must connect to the common input terminal of the controller W55 Wiring the UNT1100 Series 5 11 Method 2 Method 1 Unit Power Load Transformer Load Transformer Transformer AN a Jumper in Contactor Contactor T4 Optional Ground BO OUT ES Li SRC I OPEN N2 Address EX METASYS AS UNT 1126 0 I n n n b PWR IN 24VAC 8VA CLASS 2 BIN OUT 24VAC CLASS 2 PILOT DUTY RY10029 Rev J JBHNSON CONTRELS Loadiso Figure 5 3 Load Isolation Example Grounding and Isolation for UNT1100 with Transformer A CAUTION Risk of Property Damage Do not interco Install Jumper to SRC Position Separate Load nnect two Class 2 transformers Interconnecting two Class 2 transformers in series could increase the applied voltage to 48 VAC and may result in electric shock 5 12 UNT Controller A 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 Approved 05 0
17. network communication There is wide noise variation in relays contactors and gas ignition control devices Electromagnetic fields can radiate from wires carrying spark or coil current as well as from the spark or contact arc itself Electromagnetic fields are also present around wires carrying power to the ignition control These are noisy wires Considerations for Gas Ignitions When using Rooftop Units containing Gas Ignition Control see Figure B 1 keep the following things in mind e You must filter any wires connected to the gas valves that you route with other wires leaving the gas heating section An individual line filter can filter two wires but it is acceptable to use only half of it if you need to filter a single wire Mount the filters on the metal wall between the ignition chamber and the fan chamber We recommend the filters listed in Table B 1 Precautions for Rooftop Installations B 3 Table B 1 Recommended Filters Vendor Corcom Corcom Corcom Corcom Type Newark Stock Number 3VB1 81F4523 3B1 81F4523 3VK1 81F4542 3K1 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 No other models are authorized e Keep the length of the high voltage wire from the ignition control to the spark bundled and as short as possible Bundle the spark wire to itself if it is too long Keep the ignition control and
18. 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 Use these switches and HVAC PRO software to select the type of analog input Use the Temp switch positions for all temperature sensors and setpoint potentiometers Use the Voltage positions for all active voltage transmitters For humidity applications using 3 wire voltage transmitters such as the HE 6300 Series use the 15 VDC power supply terminals next to the inputs for AI6 Table 5 8 shows each configuration Table 5 8 Analog Input Configurations Al Type Range Switch Position Voltage V 0 to 2 VDC SW1 to Off SW to Off Voltage V 0 to 10 VDC SW1 to On SW2 to Off Resistance 1 000 ohm Nickel Platinum SW1 to Off Temperature T Silicon 2 k ohm potentiometer SW2 to On 5 16 UNT Controller Analog Input Switches Al Switches ON TEMP 2V oy OFF OFF OFF SW1 OFF SW2 ON Setting the Analog DIP Switches 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 UNT1100O Series Installation Bulletin Part No 24 9534 7 fi I i Ale of d fo id ems AC T US amb
19. 000 ohm Display with Phone Jack Ordering the UNT1100 Series 7 3 Dampers and Valve Actuators Use Table 7 3 to order controllers and accessory equipment Table 7 3 UNT1100 Dampers and Valve Actuators Code Number VA 7152 Series VA 7202 Series VA 8122 Series VA 8052 Series M100C Series M100E Series M100G Series M9000 500 Series M9100 M9200 Description Valve Actuator Valve Actuator Valve Actuator Assemblies 1 2 inch Valve Actuator Assemblies 1 2 inch 3 4 inch 1 inch and 1 1 2 inch Zone Bus Damper Actuators Standalone Economizer Actuators Proportional Damper Actuators Valve Linkage Assembly for M9100 and M9200 Direct Mount Actuators Direct Mount Proportional Damper Actuator Direct Mount Proportional Damper Actuator Spring Return Type 0 to 10 VDC Proportional 0 to 10 VDC Proportional 0 to 10 VDC 0 to 10 VDC Zone Bus Addressable 24 VAC Triac 0 to 10 VDC 0 5 through 2 inch Globe Style Valve Bodies 0 to 10 VDC 0 to 10 VDC 7 4 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 N A AS ENC100 0 Enclosure for UNT1100 Sheet Metal Series optional AS RLY002 0 Relay 2 SPDT 5A 240 VAC AS RLY050 0 Relay Kit 2
20. 2 Relay Relay R3 Relay Relay A 12 UNT Controller Application Specific Controllers Technical Manual X B 1 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 Code No LIT 63630839 B 2 UNT Controller Key Concepts Environmental Information Mount the UNT within the rooftop unit or some other enclosure to protect it from rain snow etc We recommend venting for small enclosures in environments that regularly exceed 32 C 90 F The installation site of the UNT must meet the following environmental standards e The atmosphere must be free of explosive gases or corrosive chemical or salt vapors e The relative humidity non condensing must be between 10 and 90 e 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 This is due to contacts switching inductive loads and electrical spark ignition devices You must take precautions to prevent electrical noise from causing false BO triggering resetting of controllers or interference with any
21. 4 When you ground one side of the transformer secondary the grounded side must connect to the common power input terminal W55 Connecting the grounded side of the transformer to the 24 VAC power input terminal will damage a CBLPRO 1 0 or laptop You may connect the separate load power transformer secondary to earth ground as long as doing so is compatible with the equipment being controlled Terminal Designations Terminal points are identified on the front label and circuit board of each UNT1100 model Figure 5 4 You may make connections to the UNT by connecting single wires to the individual screw or spade terminals Label and terminal point identification are different for each UNT1100 model Table 5 6 and Table 5 7 identify the terminals amp 9 W20 w23 at W28 W29 ol w34 w35 i RS T I u ooo 000 Q om CO N2 Address EES Le es O O CC OPEN pepe OEL METASYS AS UNT1126 0 IHE LG N ADDR 0 ALL OPEN PWR IN 24VAC 8VA CLASS 2 d G ZBUS rr BIN OUT 24VAC CLASS 2 PILOT DUTY Alt Al2 AI3 AI4 AI5 AIG RY10029 Rev J m ola ola mp J amp HNSON H Dh mo Dg m m CONTRELS Figure 5 4 Example of UNT1100 Label Wiring the UNT1100 Series 5 13 Table 5 6 UNT1100 Terminal Identification Bottom Terminals Left to Right Terminal Identification
22. 5 causes unnecessary contactor cycling This creates additional electrical noise On some 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 This is evidenced by numerous unexplained offline conditions with durations of less than one minute To alleviate this situation in York rooftop units bypass or disable the supply fan relay according to the following procedure Notes These modifications apply only to those units described below Units built after the dates indicated have already been modified by York and do not require this change The date of manufacture of York rooftop units can be determined from the second and third digits of the serial number as shown in Table B 2 e On 3 to 6 ton units built before February 17 1997 the K3 relay must be disabled by disconnecting the wire that connects the time delay relay contacts to the relay board This is typically the 234 BLUE wire e On3to 6 ton units built between February 17 1997 and May 30 1997 York implemented a different relay interface board On this new relay board the K5 relay must be bypassed by moving the wire currently connected to the G terminal on the York relay board to the A2 terminal e On 7 to 25 ton units bui
23. 6 8 pin 6 pin phonejk Figure 5 10 Phone Jack Polarization Table 5 12 defines the pin usage for each jack Table 5 12 Phone Jack Pin Identification 8 Pin Jack UNT1100 Series to 6 Pin Jack CBLPRO or ZT to Temperature Sensor Temperature Sensor Pin Signal Pin Signal 1 AI 3 Heating Setpoint 1 Not Used 2 Al 2 Warmer Cooler or 2 24 VAC Cooling Setpoint Al 1 Temperature Sensor 3 24 VAC ZnBs Common Al 1 Sensor Common 4 Not Used 24 VAC Class 2 BI SRC 5 Zone Bus 24 VAC ZnBs Common 6 Not Used Al 2 3 Common Zone Bus INID RAJO 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 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 Switch 2 OFF 4 Enter the range of the humidity sensor through the HVAC PRO software 0 to 10 VDC is equal to 0 to 10096 RH 4 Al Switches Analog Input Switches d Jumper Jumper Jumper OFF ON OFF OFF N2 Addre
24. 8 Detailed sidere T ME 5 23 Connecting HE 6300 Humidity Sensor EEN 5 23 Troubleshooting Put 5 24 Internal Thermal enee 5 24 Chaptere Downloading and Commissioning the UNT1100 Series 6 1 geiler PPPI TE 6 1 EE 6 2 Commissioning Procedures E E m 6 2 TROUDIOCSNOOUIG Pm 6 3 Chapter7 Ordering the UNT1100 Series 7 1 WAT O OU CUO 1 7 1 EE 7 2 Ordering Information for Johnson Controls sssssesseessnnesssnrrnseerrnreennressrrrnnerrennnsrreresnee 7 2 Ordering Information for Outside Vendors AAA 7 5 RP ee PMNS ED 7 7 AppendxA Application Examples ccccceseceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees A 1 PATO GU CUON A 1 KY CONCEPTS T A 2 zung e E A 2 UNIT DR TM A 4 PACKAGES AO ONO E it A 6 Heat IP UMTS cece siet ens saai a E eaea al EN AEE a iaia aa anaE A 8 Lead Lag Pump SSQUSTICS mm A 10 AppendixB Precautions for Rooftop Installations B 1 IEF O GU CTION PRINTER B 1 4 UNT Controller Key CODDODIS siectatsdinedsietiisdadaidsdeledatadainsadadeietidedeindasvialsdiiedeletideisinsiislaieaiieians B 2 Environmental Information Bee B 2 Electrical Noise in Rooftop DIIS gedeelt EeeEeere B 2 Considerations for Gas lgnitions xc iescc
25. JeHNSON CONTRSLS Table of Contents Unitary UNT Controller 1100 Series User s Guide Chapter 1 Using this Guide eret e cereos 1 1 Introduction lists 1 1 Key CODCODIS ge 1 2 Chapter Organization e MEME 1 2 Chapter2 Introduction to the UNT1100 Series 2 1 ele e ET E 2 1 Eeer 2 2 UNT1100 Series Operall n tte cheng ear eter rennes Betten kk ote Taste en enhn den 2 2 Related Infotrrmiatiori i i d ie e e ENT e EET Hr a I a er EY t ne 2 4 SE ive tom S enge ipe toe D e 2 4 Chaptr3 Configuring the UNT1100 Series 3 1 ITF O DU CUR mem 3 1 EE 3 2 HVAG e le E ele Be EE 3 2 Bench POSTING m T E 3 2 PFOCCAUSE OVGIVICW EEN 3 3 Detailed PFOCCOUTCS E 3 4 Defining a UNT1100 in a Metasys Network eeeeeeeeeeeeeeeneneeennnn 3 4 Johnson Controls Inc www johnsoncontrols com 2 UNT Controller Defining a UNT1100 in N30 Software ene eene 3 7 Chapter4 Installing the UNT1100 Series 4 1 jq A 4 1 K y CONCEDI I T n 4 2 Ree rue EEEE 4 2 Tools Needed for Installation emgeet eegener bond esaet eda duas asa indo Enc 4 2 Environmental Information RR ES LS LED m ee ee ee 4 3 Controller Physical Dimensions enne 4 3 Power Line Wiring Transient Noise Precautions eeesseeeeeeeeeiesse
26. NC4 NO3 OUT3 NC3 NO2 OUT2 NC2 NO1 OUT1 NC1 SRC 24 VAC 24 VAC COM UNT1144 AO1 AO CM space AO2 AO CM space AOS AO CM space AO4 AO CM space NO4 OUT4 NC4 NO3 OUT3 NC3 NO2 OUT2 NC2 NO1 OUT1 NC1 SRC 24 VAC 24 VAC COM SRC is the Common to all relay out terminals via jumper clips Description BO8 Relay Normally Open AO1 Signal BO8 Relay Center Contact AO1 Common BO8 Relay Normally Closed not used BO7 Relay Normally Open AC Signal BO7 Relay Center Contact AO2 Common BO7 Relay Normally Closed not used BO6 Relay Normally Open AOS Signal BO6 Relay Center Contact AO3 Common BO6 Relay Normally Closed not used BO5 Relay Normally Open AOA Signal BOS Relay Center Contact AO4 Common BO5 Relay Normally Closed not used BO4 Relay Normally Open BO4 Relay Center Contact BO4 Relay Normally Closed BO3 Relay Normally Open BO3 Relay Center Contact BO3 Relay Normally Closed BO2 Relay Normally Open BO2 Relay Center Contact BO2 Relay Normally Closed BO1 Relay Normally Open BO1 Relay Center Contact BO1 Relay Normally Closed Jumper Selectable Source Voltage factory installed jumper High Side of Power Transformer High Side of Power Transformer Low Side of Power Transformer Analog Inputs Wiring the UNT1100 Series 5 15 The six analog input terminals their power supply and their common points occupy the lower left corner of
27. NT1100 Series device object in a Metasys Network 1 Go to the Network Map on the Operator Workstation OWS and double click a system name 2 On the Item menu click New The Item New dialog box appears Figure 3 1 3 Select Type N2 devices in the Item New dialog box AHU Item New Type E C Accumulator C Control system C ancel C Analog data C DLILR group C Analog input C LC group C Analog output digital C PID loop C Analog output setpoint C Fire Zone C Binary data C L2 devices C Binary input N2 devices C Binary output C N2E devices C MS data C S2 devices C MS input C Card Reader C MS output C LON devices C Multiple Command Hardware system name 1 Hardware object name Figure 3 1 Item New Dialog Box itemnew Note The Hardware System and Hardware Object text fields are not used for this object type 4 Click OK Configuring the UNT1100 Series 3 5 5 Highlight UNT in the Add N2 Device dialog box as shown in Figure 3 2 AHU Add N2 Device Device Type Cancel Figure 3 2 Add N2 Device Dialog Box add_n2 6 Click OK 7 Complete the attribute fields in the UNT Definition window as shown in Figure 3 3 3 6 UNT Controller UNT Definition ltem Edit View ction GoTo Accessory Help JCHDOQTRS Johnson Controls Hdgtrs GRP NC63 STANDARD Object Grp NC63 GROUPB GROUP 5 Seventh Floor System system Name RHU Object Name Expanded ID
28. about configuring the UNT1100 Series controller This section describes how to e define a UNT1100 in a Metasys Network e define a UNT1100 in N30 software January 2001 Johnson Controls Inc www johnsoncontrols com Code No LIT 63630833 3 2 UNT Controller Key Concepts HVAC PRO Configuration Tool 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 Bench Testing We recommend verifying any new configuration by pulling a sample of the UNT1100 shipment for bench testing and loading a job configuration before all the controllers are mounted in the unit cabinets Procedure Overview Configuring the UNT1100 Series 3 3 Table 3 1 Configuring the UNT1100 Series To Do This Define a UNT1100 in a Metasys Network Define a UNT1100 in N30 Software Follow These Steps In the Metasys Operator Workstation OWS open the Network Map and define the UNT1100 as a new object Fill in the blank UNT1100 Series Definition attribute fields as required Click Save to add the object to the NCM database Upload the NCM to make an archive copy of the new object Refer to the Object Dictionary FAN 694 3 4 UNT Controller Detailed Procedures Defining a UNT1100 in a Metasys Network To define a U
29. d Communications Wiring Transient Noise Precautions The I O wiring and N2 Bus must be clean without electrical noise transients from nearby lighting heavy equipment switching or inductive loads being driven For the N2 Bus the Transient Eliminator model TE JCOAC12 made by Advanced Protection Technologies APT is recommended Refer to the Metasys Network Technical Manual FAN 636 and the N2 Communications Bus Technical Bulletin LIT 636018 636018toc metlit mvb for more information Installing the UNT1100 Series 4 5 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 There should be 0 VAC measured from a common terminal to earth ground and over 20 VAC from a 24 VAC terminal to earth ground when power is applied If no earth ground connections were planned for the power supply and or binary outputs and you suspect that an earth ground may exist use the procedure described above for the UNT1100 to test for the presence of a ground loop condition 4 6 UNT Controller Detailed Procedures Mounting the UNT in an Enclosure Kit To mount the UNT in an enclosure kit 1 Position the controller and enclosure on the proposed vertical mounting su
30. d from line voltage power wiring e Make all wiring connections to the UNT using only copper conductors e Ifthe UNT1100 is included in a network daisy chain the N2 The use of Y or T bus topologies without a repeater installed in the T may cause a loss of communications Do not use wire smaller than 22 AWG 5 8 UNT Controller e 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 Only Shielded N2 Bus wiring can be run in the same bundle or conduit as 24 VAC power wiring Zone Bus AI AO and BI wiring can be run in the same bundle or conduit where convenient You may have either no earth ground connection or one earth ground connection which must be at the transformer secondary common whether one or multiple controllers are powered by the same transformer Grounding and Isolation for UNT1100 You may connect the UNT power transformer secondary directly to earth ground as shown in Figure 5 2 If you elect to do so the grounded side must connect to the common power input terminal of the controller Wiring the UNT1100 Series
31. de 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 Unoccupied Override of Heating Valve Heating Valve Fixed Position on Low DAT Cooling Type None Lighting Integration No Return Air beem OK Discharge Air Outdoor Air Y A R EP TE TE 3 DA Ci uvmech Figure A 3 Unit Vent Mechanical Flow Diagram Application Examples A 5 o Fan DA1 EP1 C9 Relay Ti 4 COM 9 De COM NEUN IN mT BUS rr COM li WIR Ji w20 W23 f W28 W29 T T w35 Or WAD W i XFR50 E j 24 240 l VAC VAC ddress A SRC to 24 VAC BOs EK METASYS High Side Switched aes AS UNT1126 0 s HEIL LE T PWR IN 24VAC 8VA CLASS 2 BIN OUT 24VAC CLASS 2 PILOT DUTY AI3 Al4 AI5 AIG RY10029 Rev J P 8 e fl J HNSON CONTRELS TE1 TE3 RM T Ww RM SP ON m E Preferred DIP Switch Position for aj _ m TE 6700 Room Sensor 123 uwwire Figure A 4 Unit Vent Wiring Example Bill of Materials Table A 4 Unit Vent Bill of Mat
32. duction 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 A WARNING Risk of Electric Shock Disconnect power supply before making electric connections Contact with components carrying hazardous voltage can cause electric shock and may result in severe personal injury or death September 2004 Johnson Controls Inc www johnsoncontrols com 5 2 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 However if you use one low voltage power trunk to power multiple controllers follow these precautions Ensure that polarity is maintained at each 24 VAC connection Enclose 24 VAC power trunks with greater than 4 amperes 100 VA in conduit as required by the National Electric Code NEC Do not share a UNT s power transformer with a Companion Panel or any other device with a full wave rectifier in its power supply UNTs use half wave rectification Half wave circuitry and full wave circuitry must not share the same transformer Consider all the actual loads as well as the basic load of the controller when determining the system load 10 VA is listed as the power draw for the con
33. e bm cba foe BO3 po po D CO O at A METASYS AS UNT11xx HH HL GT BIN OUT AVAG 2A GLASS 2 PILOT DUTY A E RY10029 Rev J fsa J amp HNSON d BB Dim min ni pu oO CONTRELS zw es Lotte wit Lenz wis wie wiz BI BI2 T BI BI4 BI6 BI7 Stemm cans Zeien scien cosisrc G Tee Corisre Coe meise coer Strumm z waa 42 W43 W 47 z 48 wi olojo opopo Of Off Off Off O f 0100 010 ojoo ol Off Off Off Of ojojo EE EE g dipswitch Figure 5 5 Setting the Analog Input DIP Switches The AI switches are factory set with AI 1 2 and 3 as resistive inputs and AI 4 5 and 6 as 0 to 10 VDC inputs You may reconfigure the switches using Table 5 9 For example if you connect a 10 VDC input to AI 4 set SW1 4 to On and SW2 4 to Off Table 5 9 Analog Input DIP Switch Settings Hardware Point Temp 2 VDC 0 to 2 10 VDC 0 to Resistive Input VDC Input 10 VDC Input Switch SW1 SW2 SW1 SW2 SW1 SW2 Al 1 OFF ON OFF OFF ON OFF Al 2 OFF ON OFF OFF ON OFF Al3 OFF ON OFF OFF ON OFF Al 4 OFF ON OFF OFF ON OFF AI5 OFF ON OFF OFF ON OFF Al6 OFF ON OFF OFF ON OFF Binary Inputs Wiring the UNT1100 Series 5 17 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 comple
34. e Contact 152 4 m 500 ft 152 4 m 500 ft Single BO at 0 1A 76 2 m 250 ft 18 9 m 62 ft Single BO at 0 5 A 15 2 m 50 ft 3 7 m 12 ft Single BO at 2 0A 3 8 m 12 5 ft 0 9 m 3 1 ft Zone Bus 152 4 m 500 ft 15 2 m 50 ft Zone Thermostat 30 5 m 100 ft Eight Conductor Phone Cable 6 1 m 20 ft Round trip wire distances shown assuming 2 8 voltage drop due to cable length and wire gauge If a CBLPRO 2 and a Zone Terminal are used the cable length must be limited to 15 m 50 ft Figure 5 8 shows connections between an M100C motor and the Zone Bus When you connect an M100C actuator to the Zone Bus we recommend powering it with a separate 24 VAC transformer However you may use the UNT s transformer if it is sized to provide the required additional 20 VA connected with the correct polarity and run with 18 AWG or thicker wire See Figure 5 8 for terminal locations when wiring an M10OC actuator Wiring the UNT1100 Series 5 23 TMC TOS TIT METASYS OPEN AS UNT1126 0 HTT PWR IN 24VAC amp VA CLASS 2 BIN OUT 24VAC CLASS 2 PILOT DUTY RY10029 Rev J Accaution Risk of Property Damage If the same transformer is used for both the UNT and M100 boards connect the COM terminal of the UNT to the e COM T1 T1 terminal of the M100 7 COM l cow Failure to do so may result To ERA in a short ci
35. ensions H x W x D Shipping Weight Processor Memory Interfaces Standards Compliance Agency Listings AS UNT1108 0 AS UNT1126 0 AS UNT1144 0 24 VAC 50 60 Hz at 40 VA per typical system 8 VA for controller alone with comm module 40 to 60 C 40 to 140 F 10 to 90 RH 40 to 70 C 40 to 158 F 10 to 90 RH 160 x 146 x 39 mm 6 3 x 5 8 x 1 5 in without enclosure ENC 0 43 kg 0 95 Ib 80C652 32K RAM 64K ROM 24K EEPROM Zone Bus N2 IEEE 472 IEEE 518 IEEE 587 Category A FCC Part 15 Subpart J Class A UL 916 UL 864 UL 864 Listed 7 8 UNT Controller Application Specific Controllers Technical Manual A 1 Appendix A Application Examples Introduction All examples in this appendix were created by answering configuration questions using HVAC PRO software to identify terminal locations of the inputs and outputs Note 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 This appendix describes the following applications e fan coil e unit vent e packaged rooftop e heat pump e lead lag pump sequence January 2001 Johnson Controls Inc www johnsoncontrols com Code
36. er it is not included For example in this chapter the Detailed Procedures section is not required Application Specific Controllers Technical Manual 2 1 Chapter 2 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 Network This chapter gives an overview of the product January 2001 Johnson Controls Inc www johnsoncontrols com Code No LIT 63630832 2 2 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 supervisory controller When connected to the Metasys Network the UNT1100 provides all point control information to the rest of the network The devices communicate through an N2 Bus For a smaller facility the UNT1100 can function as a standalone controller Figure 2 1 is an example of the UNT1100 Series controller ji
37. erials Component Description C1 Digital Controller TE1 TE2 TE3 EP1 DA1 Set AO2 to Zone Bus Outdoor Air Sensor Zone Temperature Sensor Discharge Air Sensor Electric to Pneumatic Interface Zone Damper Actuator Part Number AS UNT11xx 0 TE 6700 Series TE 6300 Series TE 6300 Series EP 8000 Series M100CGA 2 A 6 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 Table A 5 Packaged Rooftop Parameters and Configuration Selections HVAC PRO Parameters Economizer Output Type Configuration Selections Zone Bus Output Address 22 Economizer Changeover Type Dry Bulb Heating Type Two Stages Cooling Type Two Stages Outdoor Air Lockout of Heating Cooling Yes Zone Reset from Humidity No Heating Cooling Diagnostics Yes Lighting Interface No Air Flow Interlock Yes Exhaust Air Return Air DA A Outdoor Air A ES gt ae Discharge Air ck 81 TE TE prmech Figure A 5 Packaged Rooftop Mechanical Flow Diagram Application Examples A 7 m DAI XFR50 T2 BUS
38. 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 Common Alarm Output Types Hardware Type of Hardware Alarm Common Cu D Pump A Return Discharge Water Water Po Pump B Alarm S1 i Relay Fs Cy P Enable Switch 1P Lead Pump Switch So Ilmech Figure A 9 Lead Lag Pump Sequence Mechanical Flow Diagram Application Examples A 11 Alarm Pump B Pump A Relay Relay Relay r IN 24 IN 24 IN 24 VAC VAC VAC XFR50 Wa M BE 24 120 VAC VAC PWR M SRC to COM J METASYS UT AS UNT 1126 0 ULLA LE PWR IN 24VAC 8VA CLASS 2 BIN OUT 24VAC CLASS 2 PILOT DUTY outo OT RY10029 Rev J C 5vpc 5 S1 e e pp Enable Flow Switch AA oe Switch FS1 S2 Lead Pump we Switch l llwire Figure A 10 Lead Lag Pump Sequence Wiring Example Bill of Materials Table A 10 Lead Lag Pump Sequence Bill of Materials Component Part Number C1 Digital Controller AS UNT11xx 0 FS1 Flow Switch Paddle Flow Switch S1 Toggle Switch Toggle Switch S2 Toggle Switch Toggle Switch R1 Relay Relay R
39. hnical Manual 6 1 Downloading and Commissioning the UNT1100 Series Introduction This section describes what you need to know when downloading and commissioning a UNT1100 This chapter describes e commissioning via Zone Bus e commissioning via N2 Bus January 2001 Johnson Controls Inc www johnsoncontrols com Code No LIT 63630836 6 2 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 We recommend a Zone Terminal or laptop Personal Computer PC with HVAC PRO software to perform a complete system startup procedure However these accessories are not required for the basic procedure detailed in this section Via Zone Bus HVAC PRO software Release 8 01 or later allows you to perform downloading and commissioning via the Zone Bus This requires using the CBLPRO interface and a laptop or PC running the HVAC PRO software You can connect to the TE 6700 sensor 6 pin connector or directly at the controller Communication rate is 1200 baud over the Zone Bus Via N2 Bus HVAC PRO software Release 8 01 or later allows you to perform downloading and commissioning over the N2 Bus using MM CVT101 0 Metasys OWS Release 6 0 or higher or Compani
40. is chapter to ensure proper installation Also refer to the engineering drawings supplied for the individual site Check the following the mounting screws holding the subassembly onto the base frame are secure accessory equipment is connected and labeled correctly the controller terminal connections are secure 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 Installing the UNT1100 Series 4 9 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 Isolation and Grounding UNT1100 Series without an Earth Ground Connection The following tests are not required but are recommended to reduce installation errors To ensure proper isolation within your system test the following e field device wiring for proper isolation e transformer for isolation and correct polarity termination e connected field devices transformer and UNT for proper isolation 4 10 UNT Controller Application Specific Controllers Technical Manual 5 1 Chapter 5 Wiring the UNT1100 Series Intro
41. lt before February 28 1997 the K5 relay must be bypassed by moving the wire currently connected to the G terminal on the York relay board to the A2 terminal B 6 UNT Controller Table B 2 York Rooftop Unit Serial Number Date Conversion Second Digit Month Third Digit Year A 1 A 92 B 2 B 93 Cc 3 c 94 D 4 D 95 E 5 E 96 F 6 F 97 G 7 G 98 H 8 H 99 K 9 K 00 L 10 L 01 M 11 N A N A N 12 N A N A Precautions for Rooftop Installations B 7 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 B 8 UNT Controller Detailed Procedures Installing a UNT1100 in a Rooftop Unit To install a UNT1100 in a rooftop unit 1 Mount the controller inside the rooftop unit or some other enclosure to protect it from outside elements such as rain or snow 2 Install a transformer to provide 24 VAC power to the controller and all the loads 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 XFRO050 0 50VA 120 VAC to 24 VAC insulated windings high noise immunity resettable breaker 3 You may drive rooftop unit contactor relay loads directly
42. minal and the SRC terminal The OUTx terminal also can be used when using a separate load transformer Remove the BOx jumper clip on the controller for this application For important power and load specifications see Table 5 1 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 When connecting this terminal to common for low side switching each load must be connected between the binary output N O terminal and the 24 VAC terminal of the transformer Analog Outputs The UNT1126 and the UNT1144 have two and four AOs respectively The load connects between the AO and AO common terminals Each output generates a proportional voltage output of 0 to 10 VDC to common The maximum load for each output is 10 mA with a minimum 1000 ohm load resistance Zone Bus The Zone Bus provides UNT serial communication connections for M100C Series actuators CBLPRO for HVAC PRO commissioning the Zone Terminal ZT and the TMZ1600 sensor Wiring to Unit Mounted Controls UNT1100 A CAUTION Risk of Property Damage When connecting an earth ground on the power transformer secondary connect only one such ground regardless of the number of controllers powered by the transfo
43. ne jack on controller e Removable screw terminal block Operating 40 to 60 C 40 to 140 F Temperature Rating UO Terminations Quick Connects Spade Lugs 24 VAC Power in Quick Connects Spade Lugs Termination Table 2 2 UNT1100 Series Hardware Characteristics Differences Among Models Characteristic UNT1108 UNT1126 UNT1144 Analog Outputs None 2 4 0to 10 VDC 10 mA Binary Outputs 8 6 4 2A 24 VAC Pilot Relays SPDT Single Pole Double Throw 2 4 UNT Controller Related Information Table 2 3 describes where to find information on items related to the UNT1100 Series Table 2 3 Related Information Description Document Sales and Marketing Unitary Controller UNT 1100 Series Product Information Bulletin LIT 635066 in the Metasys Network Sales Resource Manual FAN 635 Using HVAC PRO Software HVAC PRO User s Manual FAN 637 5 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 CSA C22 2 No 205 EN50081 1 EN55011 Class B EN50082 2 1995 EN61000 4 2 EN50140 1993 EN50204 EN50141 1993 EN61000 4 4 EN50141 UL873 Recognized UL94 5VA Enclosure Application Specific Controllers Technical Manual 3 1 Chapter 3 Configuring the UNT1100 Series Introduction This chapter includes information
44. ollers Technical Manual 4 1 Chapter 4 Installing the UNT1100 Series Introduction This chapter describes how to e mount the enclosure in an enclosure kit e install the UNT1100 in an AS ENC100 0 Enclosure Kit e install the UNT1100 in an EWCIO Enclosure Kit January 2001 Johnson Controls Inc www johnsoncontrols com Code No LIT 63630834 4 2 UNT Controller Key Concepts Design Considerations The number and types of components sensors and actuators used with the UNT1100 varies according to application Analyze the proposed installation for logical locations to place these devices and draw an inventory based on that study Information on available accessory devices is in the Ordering the UNT1100 Series 636308 I johnson 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 Also consider any existing power sources and communication lines Secure the controller vertically to a solid wall or panel and not to any vibrating surface IMPORTANT Do not mount the UNT1100 near high voltage or electrically noisy devices Refer to Appendix B Precautions for Rooftop Installations636308 lapndxaenviron IMPORTANT For Underwriter s Laboratories Inc UL 864 installations You must use only the XFR50 or XPR100 transformers to power the UNT1100 24 V AC power to the BO leads only are excluded from this re
45. on Release 6 00 and Controller Access Because the communication rate is 9600 baud performing this process over the N2 Bus saves a great deal of time when loading the initial configuration files and parameters into the controller Downloading and Commissioning the UNT1100 Series 6 3 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 Note It takes ten seconds for a UNT to reset and resume communication after being downloaded An effective troubleshooting technique is to use a CBLCON and observe its LEDs which will indicate the problem You may also try exchanging the component that you believe is defective with a working component of the same type A noisy wire adjacent to the Zone Bus can also cause communication errors Noise can be periodically induced into the Zone Bus thereby causing sporadic communication failures between the laptop and the UNT Most often noisy lines cause intermittent disruption not total loss of communication For more information on HVAC PRO software refer to the HVAC PRO User s Manual FAN 637 5 6 4 UNT Controller Application Specific Controllers Technical Manual 7 1 Chapter 7 Ordering
46. on Controls separate isolation transformer or stepdown transformer operates reliably in an electrical environment defined as Location Category A by the IEEE 587 Standard that is when installed more than 30 feet from electrical distribution panels or major bus and feeder systems in industrial plants IEEE 587 Location Category A power line surge noise level is specified at 6 KV 500A Normal Mode Ringwave 4 4 UNT Controller Surge Levels The UNT exceeds the Category A specification by meeting these surge levels as well IEEE 587 style Common Mode Pulse 3kV 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 plants you must take further precautions to prevent unwanted Binary Output BO cycling resetting or other possible controller malfunctions This electrical environment is defined as Location Category B by the IEEE 587 Standard You can prevent electrical noise from adversely affecting the controller The UNT meets the following power line surge noise standards IEEE 587 Common Mode Pulse 1 5 kV Normal Mode Pulse 6 kV Normal Mode Ringwave 6 kV IEEE 472 Common Mode Ringwave 1 5 kV Normal Mode Ringwave 500V For more information refer to Appendix B Precautions for Rooftop Installations in this user s guide UO an
47. ormer 5 10 UNT Controller A 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 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 Connect the load transformer to the SRC terminal after removing factory jumper from W49 to W52 and one side of the load Install the binary output jumper to the SRC position and wire the second side of the load to either the Normally Open N O or Normally Closed N C output terminal Multiple outputs can share the same load transformer 2 Connect the load transformer to the center terminal of the output and one side of the load Install the binary output jumper to the open position and wire the second side of the load to either the N O or N C output terminal A separate load transformer may be necessary because of transformer VA limitations or may be desirable to completely isolate loads from the UNT digital circuitry for better noise immunity Note External noise suppressors are recommended for inductive loads AS MOVKIT 0 or Electrocube surge suppression
48. quirement Tools Needed for Installation For a typical installation you need the following e HVAC PRO software Release 8 01 or later e IBM PC compatible laptop computer e Microsoft Windows AS CBLPRO 2 for Zone Bus downloading uploading and commissioning or MM CVT101 0 for N2 downloading uploading and commissioning e two screwdrivers 1 8 in and 1 4 in flat blade e drill e optional AS ZTU100 1 Zone Terminal unit Note The AS ZTU100 1 supports the AS UNT11xx models as well as previous models of UNT the AS UNTxxx 0 and AS UNTXxxx 1 models Installing the UNT1100 Series 4 3 Environmental Information The installation site of the UNT must meet the following environmental standards e The atmosphere must be free of explosive vapors and escaping gases e The atmosphere must be free of exposure to corrosive chemical or salt vapors that might damage electrical equipment e For UNT1100 controllers the temperature must be maintained between 40 and 60 C 40 and 140 F with relative humidity non condensing maintained between 10 and 90 percent Controller Physical Dimensions The UNT1100 Series controllers have the following dimensions 162 x 157 x 42 mm 6 4 x 6 2 x 1 7 in Hx W x D without enclosure 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 Johns
49. rcuit and damage 24 to the transformer Se VAG Note When you connect an M100C CCW BUS T2 actuator to the Zone Bus we recommend powering it with a separate 24 VAC transformer M100 Motor with R81CAA 2 Board HVAC PRO software indicates the needed address Zone Bus Address Switch Set address to 22 lo 12345678 fis untm100c Figure 5 8 M100C Motor Zone Bus Connection Using an R81CAA 2 Board 5 24 UNT Controller Temperature Sensors Figure 5 9 shows the connections between a UNT1100 and a TE 6700 temperature sensor METASYS AS UNT1126 0 ILLE ILL PWR IN 24VAC 8VA CLASS 2 BIN OUT 24VAC CLASS 2 PILOT DUTY RY10029 Rev J TE 6700 1 SOOO 4 tempsensor Figure 5 9 Example of TE 6700 Temperature Sensor Connection 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 Wiring the UNT1100 Series 5 25 Phone Jack Polarization Figure 5 10 illustrates the polarization of the 6 pin and 8 pin phone jacks on the UNT or sensor Terminal 1 is to the extreme left as you face the jack opening tab notch down 12315670 12345
50. re A 7 Table A 7 Heat Pump Parameters and Configuration Selections HVAC PRO Parameters Configuration Selections Heat Pump Type Water to Air Reversing Valve Action On for Heating Supplemental Heat Two Stages Lighting Integration No Return Air COMP1 Discharge Air gt P A e i TE hpmech Figure A 7 Heat Pump Mechanical Flow Diagram Application Examples A 9 W2 Heating Stage 2 W2 w Ww Y G R B W1 Heating Stage 1 W Reversing Valve Compressor Indoor Blower Equipment 24 VAC Equipment Ground Y G R B O uz m N XFR50 24 VAC 120 VAC rh Unit Terminal Strip __ SRC to 24 VAC Jumper METASYS AS UNT1126 0 Um n LI PWR IN 24VAC 8VA CLASS 2 BIN OUT 24VAC CLASS 2 PILOT DUTY RECV XMIT o O A RY10029 Rev J JBHNSON conta S Preferred DIP Switch Position for TE 6700 Room Sensor hpwire Figure A 8 Heat Pump and External Transformer Wiring Example Bill of Materials Table A 8 Heat Pump Bill of Materials Component Part Number C1 Digital Controller AS UNT1108 0 or AS UNT1126 0 TE1 Zone Temperature Sensor TE 6700 Series A 10 UNT Controller Lead Lag Pump Sequence Table A 9 lists the selections made through HVAC PRO software
51. rface to ensure that the calculated mounting area is correct Note Youcan make precise distance measurements between controller terminals and sensor actuator mounting points on the air handling equipment if the equipment is in place 2 Confirm electrical power source and conduit requirements Note You can install a UNT1100 in a control panel or in an AS ENC100 0 or EN EWC10 0 enclosure 3 Use a flat blade screwdriver and pliers to remove the necessary wire passage knockouts D as shown in Figure 4 1 4 Position the enclosure firmly against the mounting surface and using the predrilled mounting holes mount it with the appropriate screws Note This also applies to remote location packages Installing the UNT1100 in an AS ENC100 0 Enclosure Kit To install the UNT1100 in an AS ENC100 0 Enclosure Kit 1 Secure the UNT inside the enclosure kit G using the three mounting tabs on the sides of the controller board base 2 Attach the enclosure cover after installing the wiring Installing the UNT1100 Series 4 7 Do not use this knockout Otherwise the controller will be in the way of the wiring po 9 c Top Bottom Side 5 METASYS UNT Enclosure Cover untencl Figure 4 1 Installing the UNT1100 in an ENC100 Enclosure Kit Installing the UNT1100 in an EWC10 Enclosure Kit
52. rmer Connecting more than one earth ground may result in damage to other equipment connected to the controller A CAUTION Risk of Property Damage Connect the earth ground to the W55 COM terminal of the UNT controller Connecting the earth ground to any other terminal may result in damage to equipment connected to the controller 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 A WARNING Risk of Electric Shock Disconnect power supply before making electric connections Contact with components carrying hazardous voltage can cause electric shock and may result in severe injury or death Figure 5 7 shows a UNT1100 wired to an RLY050 002 with all BOs isolated from earth ground 5 20 Notes Note 1 Note 2 Note 3 Note 4 Note 5 UNT Controller 24 VAC 110 VAC 2 Address To METASYS ough S i AS UNT1126 0 mia III PWR IN 24VAC 8VA CLASS 2 BIN OUT 24VAC CLASS 2 PILOT DU RY10029 Rev J CI voc EJ S S 5
53. rrrrrrrrnssssrrrrerrrenen 4 3 UO and Communications Wiring Transient Noise Precautions ssssssesnnensseeenrnerneeea 4 4 Detailed PIOCEOUICS wrisaistitalainsisadadntitesadediaeialeditadabisidetabesddadedstiiedalediindadsdidedadas 4 6 Mounting the UNT in an Enclosure IER eiie boc ami bor nie idis 4 6 Installing the UNT1100 in an AS ENC100 0 Enclosure kt 4 6 Installing the UNT1100 in an EWC10 Enclosure kt 4 7 Troubleshooting 4 8 Diis c EE 4 8 Maret ro Ege oi Rp H 4 8 Isolation and Grounding UNT1100 Series without an Earth Ground Connection 4 9 Chapter5 Wiring the UNT1100 Series 5 1 TTPO DUCTION NNNM M 5 1 Key CORCEDIS PME T 5 2 Power Source and E retire ER ttd seio detulit Pd tetas ibid lass uda p 5 2 beluis eee m x T 5 4 Grounding and Isolation for UNT1100 ET 5 5 Terminal Designations rc 5 9 a UgesHro cm Tr 5 13 Binary UNM T 5 15 Binary Outputs Relay Jumper Information uk 5 15 Analog Kelt qr M 5 16 Zone NS Tr M 5 16 Wiring to Unit Mounted Gorntrols UNT 1 100 arit tb tt eene 5 16 Table of Contents 3 Wiring to RLY050 002 ET 5 16 Wiring Sensors and Actuators ecce esee en nennen ener n ane nn inihi anna 5 1
54. scncescineivericoneiieerschennsaeeienatsscteeeaadeataninieainiens B 2 Considerations for Specific Rooftop Untts AAA B 5 ee ee TE B 7 Diefatiegl POCCGUICS MR B 8 Installing UNT1100 in Rooftop Unit urere ttr repa aenean rains B 8 Application Specific Controllers Technical Manual 1 1 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 Code No LIT 63630831 1 2 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 Introduction Key Concepts Procedure Overview Detailed Procedures Troubleshooting Description Briefly outlines the contents of the chapter Describes background information necessary to perform or understand specific tasks Describes general steps for performing the tasks described in the Detailed Procedures section Describes in detail the steps needed to complete specific tasks described within the chapter This section is geared toward users who are new to the UNT1100 controller Presents potential problems and solutions If a particular section is not needed for a chapt
55. see Figure B 1 if all of the following conditions exist e Under normal operation the UNT1100 binary outputs directly drive all contactor relay coils within the rooftop unit e Individual BO loads exceed 10 mA e Individual BO loads do not exceed two amperes sealed current e The UNT and all its loads together draw less than the main power transformer s VA when mounted in a well vented open area Note Connect the UNT1100 binary outputs relays to the rooftop unit terminal strip 4 If other than 24 VAC power must be switched install pilot relays for isolation between the controller and the rooftop unit contactors relays J amp HNSON CONTRSLS Controls Group www johnsoncontrols com 507 E Michigan Street FAN 636 3 P O Box 423 Application Specific Controllers Technical Manual Milwaukee WI 53201 Printed in U S A
56. ss aad EE OU TEMP a boy METASYS AS UNT11xx RECV XMIT dd amp SW1 OFF SW2 ON LUI LL LN PWR IN 24VAC 2AVP CLASS 2 OU UME 2A Za RY 10029 Rev J gir CONTR PWR COM OUT 4 HE 6300 Humidity Sensor humsensor Figure 5 11 Example of HE 6300 Humidity Sensor Connection Wiring the UNT1100 Series 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 If the circuit protection device has opened due to a high current condition it may be necessary to remove power to the controller and allow a few minutes for the protection device to cool If the circuit protection device has tripped the UNT will act as though no power has been applied It will not communicate and it may feel slightly warm to the touch Again it may be necessary to remove power to the controller and allow a few minutes for the protection device to cool Maximum combined power current of BI SRC and 24 VAC at phone jack total 2 4VA 100 mA Application Specific Controllers Tec
57. such that 366 feet per leg or 732 feet end to end would work for 14 AWG Important The use of 18AWG cable for 24VAC power is limited to 35 feet at 100 VA with all loads at one end To increase this distance use 50 VA at each end with the transformer centered 100 VA total In this case up to 140 feet of 18 AWG cable can be used Note Table 5 4 describes the relationship between cable length and power at the end of wires Wiring the UNT1100 Series 5 7 Table 5 4 Maximum Cable Length for Given Power Gauge U S Measurements LLL CablSge Power VA at 8 Gauge 10Gauge 12 Gauge 14 Gauge 16 Gauge 18 Gauge End of Wire Cable Length Feet 10 3520 2200 1400 880 550 350 20 1760 1110 700 440 275 175 30 1173 740 467 293 183 117 40 880 555 350 220 138 88 50 704 444 280 176 110 70 60 587 370 233 147 92 58 70 503 317 200 126 79 50 80 440 278 175 110 69 44 90 391 247 156 98 61 39 100 352 222 140 88 55 35 Table 5 5 Maximum Cable Length for Power Wire Gauge Metric Measurements Cable Size Power VA at End of 4mm 2 5 mm 1 5 mm Wire Cable Length Meters 10 427 268 168 20 213 134 84 30 142 89 56 40 107 67 42 50 85 54 34 60 71 45 28 70 61 38 24 80 53 34 21 90 48 30 19 100 43 27 17 Wiring Precautions Follow these precautions when wiring e Make all wiring connections in accordance with the NEC as well as in accordance with local regulations e Locate equipment and route the wiring so that signal wiring is a separate
58. te a binary circuit the BI SRC terminal provides the 24 VAC which in turn activates the input Binary Inputs 1 4 have an input threshold between 2 5 and 11 5 VAC 2 9 and 9 0 VDC Binary Inputs 6 and 7 have input thresholds between 1 8 and 6 9 VAC 1 8 and 6 0 VDC Binary Input 4 may be used as an accumulator input for frequencies less than 2 Hz Binary Input 5 is an internal input that detects the Temporary Occupancy pushbutton on a TE 6700 sensor Binary Outputs Relay Jumper Information Binary outputs are relays on the controller hardware The controller has four six or eight BOs depending on the model A typical output circuit is shown in Figure 5 6 Each binary output has both Normally Open and Normally Closed electrically isolated contacts available at the terminal The Common point of each Relay may also be independently jumpered to the SRC terminal or wired to an external isolated supply Place the jumper clip to the SRC right position to connect the Relay Common OUTXx to the SRC signal When the jumper clip is placed in the OPEN left position the relay common must be externally supplied P N 24 VAC RR 24 MAC SRC pos Jumper Clip E Feci Installed y 077 V NOx umper Output sef 7 our Load Open __1NCx i Ot To Next ER BO Circuit BOjumper Figure 5 6 Typical Binary Output Circuit The jumper wire shown in Figure 5 6 is connected to the 24 VAC ter
59. the UNT1100 as far apart as possible Route the power wires to the ignition control along the metal mounting surface e Ensure that you physically separate the wires on the line side of the filter from those on the load side of the filter Route noisy wiring so that its path is as short as possible and always avoid routing noisy wires close to quiet wires We recommend a 30 cm 1 ft or greater separation between parallel noisy and quiet wires Never mount the UNT1100 in the same compartment as the ignition device If you must install noisy wiring near quiet wiring have the wires cross at right angles and as far apart as possible Route both near the metal mounting surface Note For specific information regarding noisy and quiet wiring refer to the ASC and N2 Bus Networking and Troubleshooting Guide Technical Bulletin LIT 6363003 in the Application Specific Controllers Technical Manual FAN 636 3 6363003toc UNT Controller B 4 edoid alo oto S9U9 IAS Pwj JO Ajayes Aue pioa 10 ssed q jou oq iun Jno ui saues ui Sous jdy nwu JUueseides Aew aa uwous uos ejDBurs e uonippe uj jun enoed noA ul Deen Ajyenjoe esoui uey 91e eunjyeJeduue eunsseud au sed juejeyip eq Aew Buiweup siu ur pejoridep SeyoUMs jur E SION SOU Wee ponis
60. 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 Code No LIT 63630837 7 2 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 Number Analog Relay Analog Binary N2 Output Output Input Input Communication AS UNT1108 0 0 8 6 6 d AS UNT1126 0 2 6 6 6 d AS UNT1144 0 4 4 6 6 d Sensors Transmitters Use Table 7 2 to order controllers and accessory equipment Table 7 2 UNT1100 Sensors and Transmitters Code Number Description Type EP 8000 Series Electro Pneumatic 0 to 10 VDC High Volume Transducer 0 5 to 19 psig relay HE 6300 Series Wall Mount Humidity 12 30 VDC Supply Transmitter HE 6310 Series Duct Mount Humidity 12 30 VDC Supply Transmitter HE 6700 Series Humidity Temperature Various Transmitter Wall Mount TE 6100 11 12 Zone Temperature Sensor Nickel 1000 ohm with Series Phone Jack TE 6300 Series Temperature Sensor Nickel Platinum Silicon TE 6700 Series Zone Temperature Sensor Resistance Series AP TMZ1600 0 Room Sensor with LCD Nickel PTC 1
61. troller alone Only 2 5 UNTs can be powered from one 100 VA low voltage power limited Class 2 transformer The number of UNTs per transformer varies depending on power requirements of the valve actuators and relays see Table 5 2 A 40 VA transformer is limited to two UNTs maximum The M100 or M9220 actuators draw 20 VA each We recommend that each M100 M9220 use its own 24 VAC transformer The NEC requires that the secondary common of the stepdown transformer be connected to earth ground on units powered by greater than 150 VAC Low line conditions 20 VAC or less can result in unreliable controller operation It is important to ensure that adequate source power is delivered to the device when all loads are energized Wiring the UNT1100 Series 5 3 e 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 The total 24 VAC power draw of a UNT mounted in an open air environment must be limited to a maximum of 75 VA e When the binary outputs are used to source an inductive load for example a contactor starter or other coil the common for the load typically is connected to the common for the controller This creates a current path for large inductive spikes to be coupled directly into the control circ
62. uitry of the UNT Consider using a separate transformer for inductive loads If this is not possible surge protection such as the AS MOVKIT 0 or Electrocube surge suppression device P N RG1782 6 or RG2031 6 must be installed across the coil to prevent misoperation of the unitary controller Table 5 1 assists you in determining the total 24 VA power draw of your system Table 5 1 UNT1100 Power and Load Specifications System Loads Power Draw UNT1100 with Sensors Transmitters 10 VA 400 mA BO Load Relay Contactor Solenoid Actuators Refer to specific product documentation or Table 5 2 Maximum allowable load for any individual BO relay is 48 VA 2 amperes at 24 VAC ata power factor between 0 6 and 1 0 Minimum required load for each BO relay used is 0 24 VA 10 mA at 24 VAC or 10 mA at 10 to 28 VDC AO Load Actuator included in the 10 VA power draw of the UNT Maximum allowable load for each AO is 10 mA 10 VDC with a minimum load resistance of 1 000 ohms Zone Terminal or CBLPRO 1 2 VA 50 mA Relays come with gold flash contacts If ever used for high currents the gold flash is burned off and the minimum levels 10mA shown above are no longer valid Low voltage low current outputs must remain low voltage low current You can use one 24 VAC power trunk to power multiple UNT1100s In this case transformers of up to 100 VA should be centrally located and the secondary wiring can be run without conduit

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