Carrier 50HCQ Installation Instructions Manual
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Carrier 50HCQ Installation Instructions Manual

Carrier 50HCQ Installation Instructions Manual

Weathermaster series
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See also: Product Data
50HCQ
R
WeatherMaster
Series
Single Package Rooftop
Heat Pump
with Puronr (R-410A) Refrigerant
Sizes 07, 08, 09
NOTE: Read the entire instruction manual before starting
the installation

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Summary of Contents for Carrier 50HCQ

  • Page 1: Table Of Contents

    50HCQ WeatherMaster Series Single Package Rooftop Heat Pump with Puronr (R-410A) Refrigerant Sizes 07, 08, 09 Installation Instructions NOTE: Read the entire instruction manual before starting Factory Option Thru−Base Connections ..the installation Units without 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)

    Position: 9 10 11 12 13 14 15 16 17 18 Example: – Unit/Series/Model Factory Assigned 50HCQ - Packaged Rooftop Heat Pump 0 = Standard 1 = LTL Refrig. Systems Options A = One Stage Cooling Models Electrical Options D = Two Stage Cooling Models...
  • Page 4 C160133 Fig. 2 − Unit Dimensional Drawing: 07 — 08 Size Units...
  • Page 5 C160134 Fig. 2 − Unit Dimensional Drawing: 07 — 08 Size Unit (cont.)
  • Page 6 C10588 Fig. 3 − Unit Dimensional Drawing: 09 Size Units...
  • Page 7 C10589 Fig. 3 − Unit Dimensional Drawing: 09 Size Unit (cont.)

  • Page 8: Refrigeration System Components

    C11247 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) Special...
  • Page 9 Table 2 – Heating Mode (each circuit) Table 3 – Defrost Mode Component Status/Position Component Status/Position Defrost Thermostat Closed Reversing Valve De-energized Outdoor Fan(s) Check Valve A Open Reversing Valve Energized Check Valve B Closed Check Valve A Closed Check Valve C Open Check Valve B Open...

  • Page 10: Installation

    Table 4 – Operating Weights UNITS LB (KG) On units with hinged panel option, check to be sure all 50HCQ latches are snug and in closed position. A,D07 Base Unit 710 (322)

  • Page 11: Slab Mount (Horizontal Units Only)

    Curb should be level. This is necessary for unit drain to If electric and control wiring is to be routed through the function properly. Unit leveling tolerances are shown in basepan, attach the accessory thru−the−base service Fig. 7. Refer to Accessory Roof Curb Installation connections to the basepan in accordance with the Instructions for additional information as required.
  • Page 12 C13311 Fig. 8 − Roof Curb Details...

  • Page 13: 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 14: Step 7 − Convert To Horizontal & Connect Ductwork

    PLACE ALL SEAL STRIP IN PLACE BEFORE PLACING UNIT ON ROOF CURB. “B” REQUIRED 914-1371 SPREADER (36"-54") BARS DUCT END “C” DETAIL “A” “A” SEE DETAIL “A” C10410 DIMENSIONS MAX WEIGHT UNIT 50HCQA,D07 1100 88.0 2235 40.8 1035 41.5 1055 50HCQD08 1315 88.0...

  • Page 15: Step 8 - Install Outside Air Hood

    Step 8 — Install Outside Air Hood Economizer Hood and Two−Position Hood — NOTE: If the power exhaust accessory is to be installed Economizer and Two Position Damper Hood on the unit, the hood shipped with the unit will not be Package Removal and Setup −...

  • Page 16: Step 9 - Install External Condensate Trap And Line

    5. Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position MINIMUM PITCH 1” (25mm) PER BASE RAIL past the open filter clips. Close the filter clips to lock 10’...

  • Page 17: Units With Factory−Installed Non−Fused Disconnect

    unit disconnect. On a unit without a unit−mounted disconnect, connect the source leads to compressor contactor C and indoor fan contactor IFC pressure lugs with unit field power leads. ELECTRIC DISCONNECT Field power wires are connected to the unit at line−side SWITCH pressure lugs on compressor contactor C and indoor fan COPPER...

  • Page 18: Units Without Factory−Installed Non−Fused Disconnect

    Check convenience outlet for power status before opening unit for service. Locate its disconnect switch, if appropriate, and open it. Tag−out this switch, if necessary. Two types of convenience outlets are offered on 50HCQ models: Non−powered and unit−powered. Both types provide 125−volt GFCI (ground−fault...
  • Page 19 exposed. Press the gasket over the screw heads. Slip the backing plate over the screw heads at the keyhole slots and align with the gasket; tighten the two screws until snug (do not over-tighten). Mount the weatherproof cover to the backing plate as shown in Fig.

  • Page 20: Factory Option Thru−Base Connections

    This device can be a thermostat (field−supplied) or a Fig. 27 − Typical Low−Voltage Control Connections PremierLinkt controller (available as factory−installed option or as field−installed accessory, for use on a Carrier Comfort Network or as a stand alone control) or the RTU...

  • Page 21: Commercial Defrost Control

    Jumpers C09275 Fig. 28 − Defrost Control Board Arrangement The DFB is located in the 50HCQ’s main control box (see Fig. 30). All connections are factory−made through harnesses to the unit’s CTB, to IFC (belt−drive motor) or to ECM (direct−drive motor), reversing valve solenoids and to defrost thermostats.
  • Page 22 C09276 Fig. 30 − Defrost Control Board Location Table 5 – 50HCQ Defrost Board I/O and Jumper Configurations Inputs Point Name Type of I/O Connection Pin Number Unit Connection Note G Fan DI, 24Vac P2-3 CTB-G Y1 Cool 1 DI, 24Vac...

  • Page 23: Unit Without Thru−Base Connection Kit

    Set heat anticipator settings at 0.14 amp for the first stage and 0.14 amp for second−stage heating, when available. Electric Heaters 50HCQ units may be equipped with field−installed accessory electric heaters. The heaters are modular in design, with heater frames holding open coil resistance wires strung through ceramic insulators, line−break limit...

  • Page 24: Single Point Boxes And Supplementary Fuses

    EconoMi$er X (Factory−Installed Option) Fig. 35 − Typical Single Point Installation All fuses on 50HCQ units are 60−A. (Note that all heaters For details on operating 50HCQ units equipped with the are qualified for use with a 60−A fuse, regardless of actual factory−installed...

  • Page 25: Premierlinkt Controller (Factory Option)

    The PremierLink controller is factory−mounted in the NOTE: PremierLink controller is shipped in Sensor 50HCQ 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 through controller must be configured to Thermostat mode.
  • Page 26 C160124 Fig. 39 − Typical PremierLinkt Control Wiring Diagram...

  • Page 27: Supply Air Temperature (Sat) Sensor

    Supply Air Temperature (SAT) Sensor — Outdoor Air Temperature (OAT) Sensor — On FIOP−equipped 50HCQ unit, the unit is supplied with The OAT is factory−mounted in the EconoMi$er2 (FIOP a supply−air temperature (SAT) sensor (33ZCSENSAT). or accessory). It is a nominal 10k ohm thermistor attached This sensor is a tubular probe type, approx 6−inches (152...
  • Page 28 Digital, 5VDC 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...
  • Page 29 Digital, 5VDC AUX OUT (Power Exhaust) (Output) Discrete 24VAC CCN - (BLK) Digital, 5VDC LEGEND: Carrier Comfort Network (communication bus) RH - Relative Humidity Thermostat Fan W1 - Thermostat Heat Stage 1 Indoor Air Quality (CO W2 - Thermostat Heat Stage 2...

  • Page 30: 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. T−56 provides same space temperature signal plus it allows for adjustment of space temperature setpoints from the face of the sensor by the occupants.

  • Page 31: Economizer Controls

    OAQ sensor. See Fig. 46. Connect the 4 to 20 mA before it is drawn into the return airstream. terminal to the TB1−13 terminal of the 50HCQ. Connect the SIG COM terminal to the TB1−11 terminal of the Wiring the Indoor Air Quality Sensor: For each sensor, 50HCQ.

  • Page 32: Smoke Detector/Fire Shutdown (Fsd)

    PremierLink controller is factory−installed. section according to switch manufacturer’s instructions. Arrange the switch contact to be open on no flow and to On 50HCQ units equipped with factory−installed Smoke close as pressure rises indicating fan operation. Detector(s), the smoke detector controller implements the unit shutdown through its NC contact set connected to the Connect one side of the switch’s NO contact set to CTB’s...

  • Page 33: Power Exhaust (Output)

    Black repeaters are required every 1000 ft. Connect the CCN (+) lead (typically RED) to the unit’s NOTE: Carrier device default is 9600 baud. TB1−12 terminal. Connect the CCN (ground) lead Communications Bus Wire Specifications: The CCN (typically WHT) to the unit’s TB1−14 terminal. Connect...

  • Page 34: Rtu Open Controller System

    On−board DIP switches allow you to select your protocol 50HCQ unit’s main control box (see Fig. 56), to the left (and baud rate) of choice among the four most popular of the CTB. Factory wiring is completed through...
  • Page 35 C160125 Fig. 56 − Typical RTU Open Controller Wiring Diagram...

  • Page 36: Supply Air Temperature (Sat) Sensor

    Parallel pins J5-1 = J2-6, J5-3 = J1-10, J5-5 = J1-2 are used for field installation. 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 EconoMi$er2 —...

  • Page 37: Space Temperature (Spt) Sensors

    (BLU) to the RTU Open controller at J20−1. Connect the COM terminal (BRN) to J20−2. Connect the There are two types of SPT sensors available from Carrier, SET terminal (STO or BLK) to J20−3. resistive input non-communicating (T55, T56, and T59)

  • Page 38: Outdoor Air Quality Sensor

    Smoke Detector/Fire Shutdown (FSD) — control devices. The main purpose of a protocol is to communicate information in the most efficient method On 50HCQ units equipped with factory−installed Smoke possible. Different protocols exist to provide different Detector(s), the smoke detector controller implements the kinds of information for different applications.

  • Page 39: Local Access

    LonWorks. Switch 3 (SW3) on the board is used to set NOTE: Power must be cycled after changing the SW1−3 protocol and baud rate. Switches 1 and 2 (SW1 and SW2) switch settings. are used to set the board’s network address. See Fig. 62 Refer to the RTU Open v3 Integration Guide for more and 63 for protocol switch settings and address switches.
  • Page 40 Access Port LOCAL ACCESS RNET PORT Connect to +12 DVC Rnet- computer’s Rnet+ CR2032 USB port Connect to UI-10 the Local UI-11 Access port USB Link Kit RTU Open C14131 Fig. 65 − PC Running Field Assistant Table 14 – LEDs The LEDs on the RTU Open Controller show the status of certain functions If this LED is on...

  • Page 41: Outdoor Air Enthalpy Control

    Smoke Detectors (P/N 33CSENTHSW) Smoke detectors are available as factory−installed options on 50HCQ models. Smoke detectors may be specified for The enthalpy control (33CSENTHSW) is available as a Supply Air only or for Return Air without or with field−installed accessory to be used with the EconoMi$er2 economizer or in combination of Supply Air and Return Air.
  • Page 42 Step 1 Step 2 Step 3 C12283 Fig. 69 − Completing Installation of Return Air Smoke Sensor Legend and Notes for Tables 15 and 16 LEGEND: Example: Supply voltage is 230‐3‐60 BRKR Circuit breaker C.O. Convenience outlet AB = 224 v DISC.
  • Page 43 27.7 269A 25.5 30.7 NONE 118A 18.0 17.3 299A 28.0 26.9 NONE 118A 18.0 17.3 299A 28.0 26.9 NONE 118A 18.0 17.3 HIGH 299A 28.0 26.9 See “Legend and Notes for Tables 15 and 16” on page 42. 50HCQ 48HC...
  • Page 44 50HCQ 48HC Unit Wire/Fuse or HACR Breaker Sizing Data − Single Speed Indoor Fan Motor (cont) Table 15 − ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) NO P .E.
  • Page 45 33.4 115B 33.0 39.7 NONE 118A 18.0 17.3 119A 36.0 34.6 NONE 118A 18.0 17.3 119A 36.0 34.6 NONE 118A 18.0 17.3 HIGH 119A 36.0 34.6 See “Legend and Notes for Tables 15 and 16” on page 42. 50HCQ 48HC...
  • Page 46 50HCQ 48HC Unit Wire/Fuse or HACR Breaker Sizing Data − Single Speed Indoor Fan Motor (cont) Table 15 − ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) NO P .E.
  • Page 47 27.7 269A 25.5 30.7 NONE 118A 18.0 17.3 299A 28.0 26.9 NONE 118A 18.0 17.3 299A 28.0 26.9 NONE 118A 18.0 17.3 HIGH 299A 28.0 26.9 See “Legend and Notes for Tables 15 and 16” on page 42 50HCQ 48HC...
  • Page 48 50HCQ 48HC Unit Wire/Fuse or HACR Breaker Sizing Data − Two Speed Indoor Fan Motor (cont) Table 16 − ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) NO P .E.
  • Page 49 33.4 115B 33.0 39.7 NONE 118A 18.0 17.3 119A 36.0 34.6 NONE 118A 18.0 17.3 119A 36.0 34.6 NONE 118A 18.0 17.3 HIGH 119A 36.0 34.6 See “Legend and Notes for Tables 15 and 16” on page 42 50HCQ 48HC...

  • Page 50: Step 11 - Adjust Factory−Installed Options

    Unit Without Economizer Economizer 2 Position Damper or 2 Position Damper C160126 Fig. 70 − EconoMi$ert IV Wiring Step 11 — Adjust Factory−Installed Options EconoMi$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 Controls integrated barometric relief) Connections...

  • Page 51: Step 14 − Check Belt Tension

    Step 13 — Check Belt Tension 2. Set the tension gauge to the desired tension (see Table 1 in Fig. 71). Place the large O−ring at that point. Measure the belt span length as shown in Fig. 71. 3. Press the tension checker downward on the belt until Calculate the required deflection by multiplying the belt the large O−ring is at the bottom of the straightedge.
  • Page 52 BLOWER PULLEY V-BELT MOTOR PULLEY MOTOR MOUNTING MOTOR MOUNTING BOLTS (4) PLATE C11504 Fig. 72 − 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 54 Catalog No: 50HCQ-7-9-03SI ECarrier Corporation 2016 Printed in U.S.A. Edition Date: 11/16 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 50HCQ-7-9-01SI and 50HCQ-7-9-02SI...

  • Page 55: Unit 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 56 VERIFY SMOKE DETECTOR UNIT SHUTDOWN BY UTILIZING MAGNET TEST REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS Catalog No: 50HCQ-7-9-03SI ©Carrier Corporation 2016 Printed in U.S.A. Edition Date: 11/16 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 50HCQ-7-9-01SI and 50HCQ-7-9-02SI...

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