Carrier 50KCQ Installation Instructions Manual
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Carrier 50KCQ Installation Instructions Manual

Carrier 50KCQ Installation Instructions Manual

Single package rooftop heat pump with puronr (r---410a) refrigerant sizes: 04, 05, 06
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50KCQ
Single Package Rooftop
Heat Pump
with Puronr (R---410A) Refrigerant
Sizes: 04, 05, 06
NOTE: Read the entire instruction manual before starting
the installation

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  • Page 1: Table Of Contents

    50KCQ Single Package Rooftop Heat Pump with Puronr (R---410A) Refrigerant Sizes: 04, 05, 06 Installation Instructions NOTE: Read the entire instruction manual before starting All Units ....... .

  • Page 2: Safety Considerations

    Indoor Air Quality (CO ) Sensor ... . . WARNING Outdoor Air Quality Sensor ....Smoke Detector/Fire Shutdown (FSD) .

  • Page 3: Rated Indoor Airflow (Cfm)

    - Coated Coils or Cu Fin Coils 3 = 208-230/1/60 - Louvered Hail Guards 5 = 208-230/3/60 - Economizer or 2 Position Damper 6 = 460/3/60 - Powered 115 Volt Convenience Outlet C14261 Fig. 1 - - 50KCQ 04- - 06 Model Number Nomenclature (Example)
  • Page 4 C14262 Fig. 2 - - Dimensional Drawing...
  • Page 5 C14263 Fig. 2 - - Unit Dimensional Drawing (cont.)

  • Page 6: 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 7: Curb- - Mount Installation

    Table 1 – Operating Weights UNITS LB (KG) UNITS LB (KG) UNITS LB (KG) 50KCQ Base Unit 495 (224) 580 (263) 610 (276) Economizer Vertical 50 (23) 50 (23) 50 (23) Horizontal 80 (36) 80 (36) 80 (36) Cu Fins...
  • Page 8 C13310 Fig. 5 - - Roof Curb Details...

  • Page 9: Step 5 - Field Fabricate Ductwork

    Step 5 — Field Fabricate Ductwork Step 6 — Rig and Place Unit Cabinet return-air static pressure (a negative condition) Keep unit upright and do not drop. Spreader bars are not shall not exceed 0.35 in. wg (87 Pa) with economizer or required if top crating is left on unit.

  • Page 10: Step 7 - - Convert To Horizontal And Connect Ductwork

    C14240 Fig. 6 - - Rigging Label Step 7 — Convert to Horizontal and Connect Ductwork (when required) Unit is shipped in the vertical duct configuration. Unit without factory- - installed economizer or return air smoke detector option may be field- - converted to horizontal ducted configuration.

  • Page 11: Step 8 - Install Outside Air Hood

    Step 8 — Install Outside Air Hood 4. Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the Economizer and Two Position Damper Hood steps outlined in Economizer Hood and Two–Position Package Removal and Setup - - Factory Option Hood, below.

  • Page 12: Step 9 - Units With Hinged Panels Only

    4. Insert the hood divider between the hood sides. See Step 10 — Install External Condensate Trap Fig. 11 and Fig. 12. Secure hood divider with 2 and Line screws on each hood side. The hood divider is also The unit has one -in.

  • Page 13: Step 11 - Make Electrical Connections

    On a unit without a unit- - mounted Do not connect aluminum wire between disconnect disconnect, connect the source leads to compressor switch and 50KCQ unit. Use only copper wire. contactor C and indoor fan contactor IFC pressure lugs (See Fig. 17.) with unit field power leads.

  • Page 14: Units Without Factory- - Installed

    Locate its disconnect switch, if appropriate, and open it. Lock- - out and tag- - out this switch, if necessary. Two types of convenience outlets are offered on 50KCQ models: Non- - powered and unit- - powered. Both types provide...
  • Page 15 Pwd-CO Non- - powered type: This type requires the field Transformer Convenience installation of a general- - purpose 125- - volt 15- - A circuit Outlet powered from a source elsewhere in the building. Observe GFCI national and local codes when selecting wire size, fuse or breaker requirements and disconnect switch size and Pwd-CO location.

  • Page 16: Factory- - Option Thru- - Base Connections

    PremierLink controller (available as factory- - installed Factory- - Option Thru- - Base Connections — option or as field- - installed accessory, for use on a Carrier Comfort Network or as a stand alone control) or the RTU...

  • Page 17: Unit Without Thru- - Base Connection Kit

    Fig. 26 - - Field Control Wiring Raceway O/B/Y2 (Note 1) Electric Heaters 50KCQ units may be equipped with field- - installed accessory electric heaters. The heaters are modular in design, with heater frames holding open coil resistance Note 1: Typical multi-function marking. Follow manufacturer’s configuration wires strung through ceramic insulators, line- - break limit instructions to select Y2.

  • Page 18: Single Point Boxes & Supplementary Fuses

    Fig. 30 - - Typical Single Point Installation Fig. 28 - - Typical Component Location All fuses on 50KCQ units are 60- - A. (Note that all heaters are qualified for use with a 60- - A fuse, regardless of actual heater ampacity, so only 60- - A fuses are necessary.)

  • Page 19: Economi$Er X (Factory- - Installed Option)

    EconoMi$er X (Factory- - Installed Option) DEFROST BOARD For details on operating 50KCQ units equipped with the factory- - installed EconoMi$er option, refer Factory- - Installed Economizers for TC/TCQ/HC/HCQ/ LC/KC/KCQ Rooftop Units, 3 to 27.5 Nominal Tons. E-HEAT Economizer Supplement Related to California Title 24 (Catalog No.

  • Page 20: Premierlinkt (Factory Option)

    The PremierLink control is factory- - mounted in the NOTE: PremierLink controller is shipped in Sensor 50KCQ unit’s main control box to the left of the Central mode. To be used with a thermostat, the PremierLink Terminal Board (CTB). Factory wiring is completed controller must be configured to Thermostat mode.
  • Page 21 C14267 Fig. 35 - - PremierLink Wiring Schematic...

  • Page 22: Supply Air Temperature (Sat) Sensor

    Supply Air Temperature (SAT) Sensor — airstream downstream of the cooling coil and any heating On FIOP- - equipped 50KCQ unit, the unit is supplied with devices. Be sure the probe tip does not come in contact a supply- - air temperature (SAT) sensor (33ZCSENSAT).
  • Page 23 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 24: Space Sensors

    Space Sensors — J6-7 The PremierLink 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 control.

  • Page 25: Economizer Controls

    OAQ sensor. See Fig. 42. Connect the 4 to 20 mA before it is drawn into the return airstream. terminal to the TB1- - 13 terminal of the 50KCQ. Connect the SIG COM terminal to the TB1- - 11 terminal of the Wiring the Indoor Air Quality Sensor: For each sensor, 50KCQ.

  • Page 26: Smoke Detector/Fire Shutdown (Fsd)

    - wired for PremierLink FSD operation when PremierLink is factory- - installed. Fan (Pressure) Switch (NO, close on rise in pressure) On 50KCQ units equipped with factory- - installed Smoke Thermostat Detector(s), the smoke detector controller implements the unit shutdown through its NC contact set connected to the unit’s CTB input.

  • Page 27: Ccn Communication Bus

    1000- - ft section. Optically isolated RS- - 485 repeaters are required every 1000 ft. Connect the CCN (+) lead (typically RED) to the unit’s NOTE: Carrier device default is 9600 band. TB1- - 12 terminal. Connect the CCN (ground) lead Communications Bus Wire Specifications: The CCN (typically WHT) to the unit’s TB1- - 14 terminal.

  • Page 28: Rtu Open Control System

    Carrier rooftop unit. Its internal application programming provides optimum performance and energy efficiency. RTU The RTU Open control is factory- - mounted in the 50KCQ Open enables the unit to run in 100% stand- - alone control unit’s main control box, to the left of the CTB. See mode, Carrier’s i- - Vu...
  • Page 29 C14268 Fig. 52 - - RTU Open System Control Wiring Diagram...

  • Page 30: Supply Air Temperature (Sat) Sensor

    It is a nominal 10k ohm thermistor attached Supply Air Temperature (SAT) Sensor — to an eyelet mounting ring. On FIOP- - equipped 50KCQ unit, the unit is supplied with EconoMi$er2 — a supply- - air temperature (SAT) sensor (33ZCSENSAT).

  • Page 31: Field Connections

    Space Temperature (SPT) Sensors — for internal connections at the T- - 59. Connect the SEN There are two types of SPT sensors available from Carrier, terminal (BLU) to RTU Open J20- - 1. Connect the COM resistive input non-communicating (T55, T56, and T59) terminal (BRN) to J20- - 2.

  • Page 32: Outdoor Air Quality Sensor

    Smoke Detector/Fire Shutdown (FSD) — the supply air is blown directly onto the sensor or if the On 50KCQ units equipped with factory- - installed Smoke supply air does not have a chance to mix with the room air Detector(s), the smoke detector controller implements the before it is drawn into the return airstream.

  • Page 33: Communication Wiring - - Protocols

    Communication Wiring - - Protocols Switch 3 (SW3) on the board is used to set protocol and baud rate. Switches 1 and 2 (SW1 and SW2) are used to set the board’s network address. See Fig. 58 and 59 for General —...

  • Page 34: Local Access

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

  • Page 35: Outdoor Air Enthalpy Control

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

  • Page 36: Return Air Enthalpy Sensor

    Return Air Return Air Enthalpy Sensor — Smoke Detector (as shipped) Mount the return- - air enthalpy sensor (33CSENTSEN) in the return- - air section of the economizer. The return air sensor wired enthalpy controller (33CSENTHSW). See Fig. 63. PL6-1 (24-V) –...
  • Page 43 Legend and Notes for Table 10 LEGEND: Example: Supply voltage is 230-3-60 BRKR --- Circuit breaker AB = 224 v --- Convenient outlet --- Direct drive (indoor fan motor) BC = 231 v DISC --- Disconnect AC = 226 v --- Full load amps --- Indoor fan motor (224 + 231 + 226)

  • Page 44: Step 12 - Adjust Factory- -Installed Options

    C09302 Fig. 66 - - EconoMi$er IV Wiring Step 12 — Adjust Factory- -Installed Options Electric heaters and single- - point connection kits Manual outside air damper Smoke Detectors — Two- - Position motorized outside air damper Smoke detector(s) will be connected at the Controls EconoMi$er IV (with control) Connections Board, terminals...
  • Page 46 Catalog No:50KCQ---4---6---01SI Copyright 2014 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 10/14 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: New...

  • Page 47: Unit Start- - Up Checklist

    UNIT START-UP CHECKLIST (Remove and Store in Job File) MODEL NO.: SERIAL NO.: I. PRE-START-UP j VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT j VERIFY INSTALLATION OF OUTDOOR AIR HOOD j VERIFY INSTALLATION OF FLUE EXHAUST AND INLET HOOD j VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS j VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT j CHECK THAT INDOOR- - AIR FILTERS ARE CLEAN AND IN PLACE...
  • Page 48 Catalog No:50KCQ---4---6---01SI Copyright 2014 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 10/14 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: New...

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