Carrier 50TC Series Installation Instruction
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Carrier 50TC Series Installation Instruction

Single package rooftop cooling only with puron (r-410a) refrigerant sizes 08, 12, and 14 with novation coil sizes 08 - 14 with round tube/plate fin coil
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See also: Product Data , Instruction and Installation Manual
50TC
Single Package Rooftop
Cooling Only
with Puronr (R ---410A) Refrigerant
Sizes 08, 12, and 14 with Novation
Sizes 08 --- 14 with Round Tube/Plate Fin Coil
NOTE: Read the entire instruction manual before starting
the installation.

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Coil
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Installation Instructions
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  • Page 1: Table Of Contents

    50TC Single Package Rooftop Cooling Only with Puronr (R ---410A) Refrigerant Sizes 08, 12, and 14 with Novation Coil Sizes 08 --- 14 with Round Tube/Plate Fin Coil Installation Instructions NOTE: Read the entire instruction manual before starting Factory- - Option Thru- - Base Connections .

  • Page 2: Safety Considerations

    Field Connections ......WARNING Space Temperature (SPT) Sensors ... . Indoor Air Quality (CO ) Sensor .

  • Page 3: Rated Indoor Airflow (Cfm)

    Rated Indoor Airflow (cfm) Model Number Full Load Airflow (cfm) 50TC*A08 2400 The table to the right lists the rated indoor airflow used 50TC*D/E08 2250 for the AHRI efficiency rating for the units covered in this 50TC*A09 3000 document. 50TC*D/E09 3400 50TC*A12 3600...
  • Page 4 C10310A Fig. 2 - - Unit Dimensional Drawing – 08, 09 and 12 Size Units...
  • Page 5 C10311A Fig. 2 - - Unit Dimensional Drawing – 08, 09 and 12 Size Unit (cont.)
  • Page 6 C09652A Fig. 3 - - Unit Dimensional Drawing – 14 Size Unit...
  • Page 7 C10327A Fig. 3 - - Unit Dimensional Drawing – 14 Size Unit (cont.)

  • Page 8: Installation

    C08337 LOCATION DIMENSION CONDITION 48 ---in (1219 mm) Unit disconnect is mounted on panel 18 ---in (457 mm) No disconnect, convenience outlet option 18 ---in (457) mm Recommended service clearance 12 ---in (305 mm) Minimum clearance 42 ---in (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall) 36 ---in (914 mm) Surface behind servicer is electrically non ---conductive (e.g., wood, fiberglass)

  • Page 9: Curb- - Mount Installation

    Table 1 – Operating Weights UNITS LB (KG) UNIT / COIL TYPE 50TC ---__A / RTPF 705 (320) 845 (384) 855 (388) 50TC ---__D / RTPF 730 (331) 855 (388) 865 (393) 1075 (489) 50TC ---__D / MCHX 805 (366) 820 (372) 1030 (467) OPTIONS AND ACCESSORES...
  • Page 10 C13311 Fig. 6 - - Roof Curb Details...

  • Page 11: Step 5 - Field Fabricate Ductwork

    Step 5 — Field Fabricate Ductwork For Units with Accessory Electric Heaters — Cabinet return-air static pressure (a negative condition) All installations require a minimum clearance to shall not exceed 0.35 in. wg (87 Pa) with economizer or combustible surfaces of 1- - in (25 mm) from duct for first 0.45 in.

  • Page 12: Step 6 - - Rig And Place Unit

    Step 6 — Rig and Place Unit Do not cover or obscure visibility to the unit’s informative data plate when insulating horizontal ductwork. Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof.

  • Page 13: Economizer Hood And Two- - Position Hood

    4. Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the steps outlined in Economizer Hood and Two–Position Hood, below. PANEL Hood Parts PANEL Plastic Tie Wrap CAULK Qty (2) HERE INDOOR INDOOR COIL COIL ACCESS...

  • Page 14: Step 9 - Install External Condensate Trap And Line

    Step 9 — Install External Condensate Trap and Step 10 — Make Electrical Connections Line WARNING The unit has one -in. condensate drain connection on the end of the condensate pan and an alternate connection ELECTRICAL SHOCK HAZARD on the bottom. See Fig. 14. Unit airflow configuration Failure to follow this warning could result in personal does not determine which drain connection to use.

  • Page 15: Units With Factory- - Installed Non- - Fused Disconnect

    NOTE: TEST LEADS - - Unit may be equipped with To field install the NFD shaft and handle: short leads (pigtails) on the field line connection points on 1. Remove the unit front pane (see Fig. 2 and 3). contactor C or optional disconnect switch. These leads are 2.

  • Page 16: Units Without Factory- - Installed

    Such operation would invalidate any applicable Carrier warranty. All Units — NOTE: Check all factory and field electrical connections All field wiring must comply with NEC and all local for tightness.
  • Page 17 DISCONNECT POWER UNIT CONVENIENCE OUTLET. LOCK- - OUT AND TAG- - OUT ALL POWER. Remove the blank cover plate at the convenience outlet; discard the blank cover. Loosen the two screws at the GFCI duplex outlet, until approximately -in (13 mm) under screw heads are exposed.

  • Page 18: Factory- - Option Thru- - Base Connections

    PremierLinkt controller (available as factory- - installed Fig. 25 - - Typical Low- - Voltage Control Connections option or as field- - installed accessory, for use on a Carrier Comfort Network or as a stand alone control) or the RTU Unit without Thru- - Base Connection Kit —...

  • Page 19: Heat Anticipator Settings

    RACEWAY DISCONNECT MOUNTING LOCATION INDOOR UNIT BLOCK-OFF OUTDOOR ACCESS PANEL ACCESS PANEL PANEL C08133 Fig. 27 - - Typical Access Panel Location (3- - 6 Ton) HOLE IN END PANEL (HIDDEN) C08027 Fig. 26 - - Field Control Wiring Raceway DISCONNECT EMT OR RIGID CONDUIT SINGLE...

  • Page 20: Single Point Boxes And Supplementary Fuses

    Single Point Boxes and Supplementary Fuses — When the unit MOCP device value exceeds 60- - A, CONTL unit- - mounted supplementary fuses are required for each BOARD heater circuit. These fuses are included in accessory Single Point Boxes, with power distribution and fuse blocks.

  • Page 21: Humidi- -Mizer R System Control Connections

    (units with PermierLinkt control). C09295 Fig. 33 - - Accessory Field- - Installed Humidistat To connect the Carrier humidistat (HL38MG029): 1. Route the humidistat 2- - conductor cable (field- - sup- plied) through the hole provided in the unit corner post.
  • Page 22 C150008 Fig. 35 - - Typical Humidi- - MiZer Adaptive Dehumidification System Humidistat Wiring EDGE Pro THERMIDISTAT Unit CTB THERMOSTAT O/W2/B SRTN Humidi-MiZer™ FIOP *Connection not required. C09298 Fig. 36 - - Typical Rooftop Unit with Humidi- - MiZer Adaptive Dehumidification System with Edge Pro Thermidistat Device...

  • Page 23: Premierlinkt (Factory- -Installed Option)

    FIOP/accessory EconoMi$er 2 package. function of the standard unit control board. CCN service The PremierLink controller requires the use of a Carrier access tools include System Pilott, Touch Pilott and electronic thermostat or a CCN connection for time Service Tool.
  • Page 24 C150010 Fig. 39 - - PremierLink Controller Wiring Schematic...
  • Page 25 C150011 Fig. 40 - - PremierLink Controller Wiring Schematic with Humidi- - MiZer System...

  • Page 26: Supply Air Temperature (Sat) Sensor

    Supply Air Temperature (SAT) Sensor — NOTE: The sensor must be mounted in the discharge airstream downstream of the cooling coil and any heating On FIOP- - equipped 50TC unit, the unit is supplied with a devices. Be sure the probe tip does not come in contact supply- - air temperature (SAT) sensor (33ZCSENSAT).
  • Page 27 LEGEND: --- Space Temperature Sensor FSD --- Fire Shutdown --- Space Temperature Sensor IAQ --- Indoor Air Quality (CO --- Carrier Comfort Network (communication bus) OAQ --- Outdoor Air Quality (CO CMPSAFE --- Compressor Safety RH --- Relative Humidity FILTER...

  • Page 28: Space Sensors

    Space Sensors — J6-7 The PremierLinkt controller is factory- - shipped configured for Space Sensor Mode. A Carrier T- - 55 or T- - 56 space sensor must be used. T- - 55 space temperature sensor J6-6 provides a signal of space temperature to the PremierLink Jumper controller.

  • Page 29: Economizer Controls

    Economizer Controls To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the sensor. See Fig. 47. Connect the 4- - 20 mA terminal to Indoor Air Quality (CO ) Sensor — terminal TB1- - 9 and connect the SIG COM terminal to The indoor air quality sensor accessory monitors space terminal TB1- - 11.

  • Page 30: Space Relative Humidity Sensor Or Humidistat Connections

    The sensor must be mounted vertically on the wall. The OAQ Sensor/RH Sensor Carrier logo should be orientated correctly when the J5-2 sensor is properly mounted. Avoid corner locations. Allow at least 4 ft between the J5-3 sensor and any corner. Airflow near corners tends to be 24 VAC reduced, resulting in erratic sensor readings.

  • Page 31: Filter Status Switch

    4000 ft, with no more than 60 total J4-6 devices on any 1000- - ft section. Optically isolated RS- - 485 C08118 repeaters are required every 1000 ft. Fig. 54 - - PremierLink Controller Wiring Fan Pressure NOTE: Carrier device default is 9600 band. Switch Connection...
  • Page 32 Communications Bus Wire Specifications: The CCN Connecting CCN bus: Communication Bus wiring is field- - supplied and NOTE: When connecting the communication bus cable, field- - installed. It consists of shielded 3- - conductor cable a color code system for the entire network is with drain (ground) wire.

  • Page 33: Rtu Open Controller System

    RTU Open Controller System programming provides optimum performance and energy efficiency. The RTU Open controller enables the unit to run in 100% stand- - alone control mode, Carrier’s i- - Vu The RTU Open controller is factory- - mounted in the Open network, or a Third Party Building Automation 50TC unit’s main control box, to the left of the CTB.
  • Page 34 C150012 Fig. 59 - - RTU Open Controller System Wiring Diagram...
  • Page 35 C150013 Fig. 60 - - RTU Open Controller System Wiring Diagram with Humidi- - MiZer System...

  • Page 36: Supply Air Temperature (Sat) Sensor

    Refer to the input configuration and accessory sections of the RTU Open Multi ---Protocol Controller Controls, Start ---Up, Operation and Troubleshooting manual for more detail. The RTU Open controller requires the use of a Carrier Outdoor Air Temperature (OAT) Sensor —...

  • Page 37: Field Connections

    Space Temperature (SPT) Sensors — separate, isolated power supply of 24 VAC. See Fig. 63 There are two types of SPT sensors available from Carrier, for internal connections at the T- - 59. Connect the SEN resistive input non-communicating (T55, T56, and T59) terminal (BLU) to the RTU Open controller at J20- - 1.

  • Page 38: Outdoor Air Quality Sensor

    Space Relative Humidity Sensor or Humidistat — Do not mount the IAQ sensor in drafty areas such as near supply ducts, open windows, fans, or over heat sources. Humidi- - MiZer System Control Wiring: In units Allow at least 3 ft (0.9 m) between the sensor and any equipped with the Humidi- - MiZer option there are two loose corner.

  • Page 39: Smoke Detector/Fire Shutdown (Fsd)

    J4-1 or J4-4 + 24 VDC Supply Voltage J4-2 or J4-5 (-)4 to 20 mA Current Loop Output to RTU Open controller Relative Humidity Sensor (Polarized Male Connector) SPAN ZERO 4-20 GND 0-5V 0-10V C12756 Fig. 67 - - Duct Relative Humidity Sensor Typical Wiring Humidistat: The accessory humidistat provides the RTU Fan Status: The fan status accessory is a field- - installed Open controller insight to the relative humidity in the...

  • Page 40: Communication Wiring - - Protocols

    Communication Wiring - - Protocols The RTU Open controller can be set to communicate on four different protocols: BACnet, Modbus, N2, and LonWorks. Switch 3 (SW3) on the board is used to set General — protocol and baud rate. Switches 1 and 2 (SW1 and SW2) Protocols are the communication languages spoken by are used to set the board’s network address.

  • Page 41: Local Access

    Local Access Field Assistant Field Assistant is a computer program included with the Wall Mounted Equipment Toucht Interface purchase of the Tech Tool Kit (USB-TKIT). This is a field Tech Tool to set-up, service, or download application The Equipment Touch interface is a wall- - mounted software to the RTU Open controller and includes a USB interface used to connect to the RTU Open controller to Link Cable.

  • Page 42: Outdoor Air Enthalpy Control

    Table 9 – LEDs The LEDs on the RTU Open controller show the status of certain functions If this LED is on... Status is... Power The RTU Open controller has power The RTU Open controller is receiving data from the network segment The RTU Open controller is transmitting data over the network segment The binary output is active The Run and Error LEDs indicate control module and network status...

  • Page 43: Return Air Enthalpy Sensor

    Return Air Enthalpy Sensor — Return Air Smoke Detector Mount the return- - air enthalpy sensor (33CSENTSEN) in (as shipped) the return- - air section of the economizer. The return air sensor wired enthalpy controller (33CSENTHSW). See Fig. 73. PL6-1 (24-V) –...
  • Page 55 Legend and Notes for Tables 10 and 11 LEGEND: Example: Supply voltage is 230-3-60 BRKR Circuit breaker C.O. Convenience outlet AB = 224 v DISC. Disconnect BC = 231 v Full load amps AC = 226 v Locked rotor amps Minimum circuit amps P .E.

  • Page 56: Step 11 - Adjust Factory- -Installed Options

    Unit Without Economizer or Economizer 2 Position Damper 2 Position Damper C08631 Fig. 76 - - EconoMi$er IV Wiring Step 11 — Adjust Factory- -Installed Options EconoMi$er IV (with control and integrated barometric relief) Smoke Detectors — EconoMi$er2 (without control/for external signal and Smoke detector(s) will be connected at the Central integrated barometric relief) Terminal Board (CTB), at terminals marked “Smoke...

  • Page 57: Step 13 - Check Belt Tension

    Step 13 — Check Belt Tension 2. Set the tension gauge to the desired tension (see Table 1 in Fig. 77). Place the large O- - ring at that point. Measure the belt span length as shown in Fig. 77. 3.
  • Page 58 BLOWER PULLEY V-BELT MOTOR PULLEY MOTOR MOUNTING MOTOR MOUNTING BOLTS (4) PLATE C11504 Fig. 78 - - Belt Drive Motor Mounting Pre- - Start and Start- - Up This completes the mechanical installation of the unit. Refer to the unit’s Service Manual for detailed Pre- - Start and Start- - up instructions.

  • Page 59: Start- - Up Checklist

    UNIT START-UP CHECKLIST (Remove and Store in Job File) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start---up checklist, use good judgement, follow safe practices, and adhere to the safety considerations/information as outlined in the preceding sections of this Installation Instructions document.
  • Page 60 III. HUMIDI- -MIZER SYSTEM START-UP STEPS j 1. CHECK CTB FOR JUMPER 5, 6, 7 JUMPER 5, 6, 7 MUST BE CUT AND OPEN j 2. OPEN HUMIDISTAT CONTACTS j 3. START UNIT IN COOLING (CLOSE Y1) OBSERVE AND RECORD A.

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