Carrier 50TCQA04 Installation Instructions Manual
Carrier 50TCQA04 Installation Instructions Manual

Carrier 50TCQA04 Installation Instructions Manual

Single package rooftop heat pump with puronr (r-410a) refrigerant sizes 04-07
Table of Contents

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50TCQ
Single Package Rooftop
Heat Pump
with Puronr (R---410A) Refrigerant
Sizes 04 --- 07
50TCQ 07 units for installation in the United States contain use of Carrier's Staged Air
Volume (SAV™) 2-speed indoor fan control system. This complies with the U.S. Department
of Energy (DOE) efficiency standard of 2018.
50TCQ 07 units for installation outside the United States may or may not contain use of the
SAV 2-speed indoor fan control system as they are not required to comply with the U.S.
Department of Energy (DOE) efficiency standard of 2018.
For specific details on operation of the Carrier SAV 2-speed indoor fan system refer to the
Variable Frequency Drive (VFD) Factory-Installed Option 2-Speed Motor Control Installation,
Setup and Troubleshooting manual.
NOTE: Read the entire instruction manual before starting
the installation.

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Table of Contents

Troubleshooting

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Summary of Contents for Carrier 50TCQA04

  • Page 1: Table Of Contents

    SAV 2-speed indoor fan control system as they are not required to comply with the U.S. Department of Energy (DOE) efficiency standard of 2018. For specific details on operation of the Carrier SAV 2-speed indoor fan system refer to the Variable Frequency Drive (VFD) Factory-Installed Option 2-Speed Motor Control Installation, Setup and Troubleshooting manual.
  • Page 2 EconoMi$er X (Factory- - Installed Option) ..Economizer Controls ......Product Description .
  • Page 3: Safety Considerations

    SAFETY CONSIDERATIONS WARNING Improper installation, adjustment, alteration, service, ELECTRICAL SHOCK HAZARD maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal Failure to follow this warning could cause personal injury or property damage. Consult a qualified installer, injury or death.
  • Page 4: Rated Indoor Airflow (Cfm)

    Rated Indoor Airflow (cfm) Model Number Full Load Airflow (cfm) 50TCQA04 1200 The table to the right lists the rated indoor airflow used 50TCQA05 1600 for the AHRI efficiency rating for the units covered in this 50TCQA06 2100 document. 50TCQA07...
  • Page 5 a50--- 9663 Fig. 2 - - Unit Dimensional Drawing – 04 — 07 Size Units...
  • Page 6 a50--- 9664 Fig. 2 - - Unit Dimensional Drawing – 04 — 07 Size Unit (cont)
  • Page 7: Refrigeration System Components

    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.
  • Page 8 Table 2 – Heating Mode (each circuit) Table 3 – Defrost Mode Component Status/Position Component Status/Position Reversing Valve De--- energized Defrost Thermostat Closed Check Valve A Open Outdoor Fan(s) Check Valve B Closed Reversing Valve Energized Check Valve C Open Check Valve A Closed Check Valve D...
  • Page 9: Installation

    Table 4 – Operating Weights 50TCQA UNITS LB (KG) Component Base Unit 505 (229) 510 (231) 590 (268) 630 (286) Economizer Vertical 50 (23) 50 (23) 50 (23) 50 (23) Horizontal 70 (48) 70 (48) 70 (48) 70 (48) Powered Outlet 35 (16) 35 (16) 35 (16)
  • Page 10 C13310 Fig. 6 - - Roof Curb Details...
  • Page 11: Slab Mount (Horizontal Units Only)

    Curb should be level. This is necessary for unit drain to Ducts passing through unconditioned spaces must be function properly. Unit leveling tolerances are show in insulated and covered with a vapor barrier. Fig. 7. Refer to Accessory Roof Curb Installation If a plenum return is used on a vertical unit, the return Instructions for additional information as required.
  • Page 12: Positioning On Curb

    C06005 DIMENSIONS MAX WEIGHT UNIT 50TCQA04 74.38 1889 36.25 33.38 50TCQA05 74.38 1889 36.25 33.38 50TCQA06 74.38 1889 35.63 41.38 1051 50TCQA07 74.38 1889 37.25 41.38 1051 NOTES: 1. Dimensions in ( ) are in millimeters. 2. Hook rigging shackles through holes in base rail, as shown in detail “A.” Holes in base rails are centered around the unit center of gravity.
  • Page 13: Step 8 - Install Outside Air Hood

    Hood Parts Plastic Tie Wrap Qty (2) Screws for Metal Tray Qty (2) C08639 C06108 Fig. 11 - - Economizer and Two- - Position Damper Fig. 9 - - Horizontal Conversion Panels Hood Parts Location Step 8 — Install Outside Air Hood 4.
  • Page 14: Step 9 - Units With Hinged Panels Only

    PANEL INDOOR COIL ACCESS PANEL LEFT HOOD SCREW SIDE 19 1/16″ (483mm) C12101 Fig. 15 - - Compressor Door Latch Location 33 3/8″ Step 10 — Install External Condensate Trap (848mm) and Line HOOD DIVIDER The unit has one -in. condensate drain connection on a50--- 9659 Fig.
  • Page 15: Step 11 - Make Electrical Connections

    All units must have an external trap for condensate contactor C or optional disconnect switch. These leads are drainage. Install a trap at least 4-in. (102 mm) deep and for factory run- - test purposes only; remove and discard protect against freeze-up. If drain line is installed before connecting field power wires to unit connection downstream from the external trap, pitch the line away from points.
  • Page 16 a50--- 9666 Fig. 20 - - 50TCQ Control Wiring Diagram...
  • Page 17 a50--- 9667 Fig. 21 - - Typical 50TCQ 04- - 07 Power Wiring Diagram (208/230V- - 3 Ph - - 60Hz Unit Shown)
  • Page 18: Units With Factory- - Installed

    Units with Factory- - Installed Non- - Fused Disconnect — The factory- - installed option non- - fused disconnect (NFD) switch is located in a weatherproof enclosure located under the main control box. The manual switch handle and shaft are shipped in the disconnect enclosure. Assemble the shaft and handle to the switch at this point.
  • Page 19 NOTE: Unit powered convenience outlets are not The primary leads to the convenience outlet transformer are available as factory installed options for size 04- - 06 single not factory- - connected. Selection of primary power source is a customer- - option. If local codes permit, the transformer phase (- - 3 voltage code) models.
  • Page 20: Factory- - Option Thru- - Base Connections

    PremierLinkt controller (available as factory- - installed Test the GFCI receptacle by pressing the TEST button on option or as field- - installed accessory, for use on a Carrier the face of the receptacle to trip and open the receptacle.
  • Page 21: Unit Without Thru- - Base Connection Kit

    Locate the thermostat accessory on a solid wall in the Commercial Defrost Control conditioned space to sense average temperature in Commercial Defrost Control Board (DFB) accordance with the thermostat installation instructions. coordinates thermostat demands for supply fan control, 1 If the thermostat contains a logic circuit requiring 24- - v or 2 stage cooling, 2 stage heating, emergency heating and power, use a thermostat cable or equivalent single leads of defrost control with unit operating sequences.
  • Page 22 C14266 Fig. 32 - - Defrost Control Board Location Table 5 – 50TCQ 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 P2--- 5 CTB--- Y1...
  • Page 23: Electric Heaters

    Table 6 – DIP Switch Position Switch No. 30 minutes 60 minutes 90 minutes 120 minutes Fan Delay ( factory default) The continuous run period is a fixed time period between the DISCONNECT MOUNTING LOCATION end of the last defrost cycle (or start of the current Heating cycle) during which no defrost will be permitted.
  • Page 24: Single Point Boxes And Supplementary Fuses

    Table 7 – Heater Model Number Bare Heater Model Number Heater Sales Package P/N Includes: Bare Heater Carton and packing materials Installation sheet Single Point Boxes and Supplementary Fuses — Single Point Boxes Without Fuses — When the unit MOCP device value exceeds 60- - A, Unit heater applications not requiring supplemental fuses unit- - mounted supplementary fuses are required for each require a special Single Point Box without any fuses.
  • Page 25: Economi$Er R X (Factory- -Installed Option)

    EconoMi$er X (Factory- -Installed Option) Specifications W7220 Economizer Module — The module is designed for use with 2 to 10 Vdc or bus communicating actuator. The module includes terminals for CO sensor, mixed air sensor, and an outdoor dry bulb sensor.
  • Page 26: Outputs

    Outputs — Table 8 – Economizer Module - - Left Hand Terminal Blocks Actuator signal: 2- - 10 Vdc; minimum actuator impedance is 2k ohm; bus two- - wire output for bus communicating Label Type Description actuators. Top Left Terminal Block Exhaust fan, Y1, Y2 and AUX1 O: 20k NTC Supply Air Temperature Sensor...
  • Page 27: Co 2 Sensor Wiring

    W7220 to power the CO sensor OR make sure the ground for the power supplies are common. See Fig. 42 for CO sensor wiring. SENSOR (HOT) BLACK YELLOW ANALOG BROWN Switch – Label ORANGE GREEN Switches POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
  • Page 28: Menu Structure

    To use the keypad when working with menus: S SYSTEM SETUP S Press the (Up arrow) button to move to the previous S ADVANCED SETUP menu. S CHECKOUT S Press the (Down arrow) button to move to the next S ALARMS menu.
  • Page 29 Table 12 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value STATUS COOL Y1 ---IN ON/OFF FIRST STAGE COOLING DEMAND (Y1---IN) (cont) Y1---I signal from space thermostat or unitary controller for Cooling Stage 1. = 24 Vac on terminal Y1---I OFF = 0 Vac on terminal Y1---I COOL Y1 ---OUT...
  • Page 30 Table 12 - - Menu Structure* (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value SETPOINTS MAT SET 53_F 38 to 70_F; SUPPLY AIR SETPOINT (12_C) (3 to 21_C) Setpoint determines where the economizer will modulate the OA damper to increment by 1 maintain the mixed air temperature.
  • Page 31 Table 12 - - Menu Structure* (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value SYSTEM INSTALL 01/01/10 Display order = MM/DD/YY SETUP Setting order = DD, MM, then YY . UNITS DEG _F or _C Sets economizer controller in degrees Fahrenheit or Celsius.
  • Page 32 Table 12 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value ADVANCED MAT T CAL 0.0_F +/ ---2.5_F SUPPLY AIR TEMPERATURE CALIBRATION SETUP (or C) (+/ ---1.4_C) Allows for the operator to adjust for an out of calibration supply air (cont) temperature (SAT) sensor OAS T CAL...
  • Page 33 Table 12 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value ALARMS(#) Alarms display only when they are active. The menu title “ALARMS(#)” includes the number of active alarms in parenthesis ( ). When using S---Bus sensors, “SYLK”...
  • Page 34: Sequence Of Operation

    Table 13 – Damper Minimum Position Settings and Readings on Checkout Menu Demand Controlled Ventilation Fan Speed Setpoints Checkout Sensor) MIN POS VMAX ---HS MIN POS H VMAX ---HS MIN POS L VMAX ---LS VENT MIN VMIN ---HS VENT MAX VMAX ---HS VENT MIN H VMIN ---HS...
  • Page 35 Table 16 – Enthalpy Operation No DCV (CO Sensor) - - 1 Speed Fan Demand Outside Air --- Controlled Good to Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied Ventilation economize? (DCV) High 0-v/Off 0-v/Off MIN POS Closed High 24-v/On 0-v/Off MIN POS Closed...
  • Page 36 Table 18 – Dry Bulb Operation No DCV (CO Sensor) - - 2 Speed Fan** Demand Outside Air --- Controlled Good to Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied Ventilation economize? (DCV) 0-v/Off 0-v/Off MIN POS L Closed 24-v/On 0-v/Off MIN POS L Closed...
  • Page 37 Table 20 – Enthalpy Operation No DCV (CO Sensor) - - 2 Speed Fan ** Demand Outside Air --- Controlled Good to Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied Ventilation economize? (DCV) 0-v/Off 0-v/Off MIN POS L Closed 24-v/On 0-v/Off MIN POS L Closed...
  • Page 38: Enthalpy Settings

    ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE a50--- 9997 Fig. 44 - - Single Enthalpy Curve and Boundaries Table 22 – Single Enthalpy and Dual Enthalpy High Limit Curves (EN Units) Point P1 Point P2 Enthalpy Temp.
  • Page 39: Checkout

    S The Y2 In call will be satisfied with the damper 100% NOTE: See “Interface Overview” on page 27 for information about menu navigation and use of the keypad. open and fan on high speed and the call will turn off To perform a Checkout test: 1.
  • Page 40: Premierlinkt (Factory Option)

    FIOP/accessory EconoMi$ert2 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 41 C14267 Fig. 47 - - PremierLink Wiring Schematic...
  • Page 42: 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 Units with a factory- - installed PremierLinkt controller devices. Be sure the probe tip does not come in contact include supply- - air temperature...
  • Page 43 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 44 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 45: 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 control.
  • Page 46: Economizer Controls

    Economizer Controls IAQ Sensor J5-5 Indoor Air Quality (CO Sensor — The indoor air quality sensor accessory monitors space J5-3 carbon dioxide (CO ) levels. This information is used to 24 VAC monitor IAQ levels. Several types of sensors are available, C08636 Fig.
  • Page 47: Space Relative Humidity Sensors

    Space Relative Humidity Sensors — Supply Fan Status Switch — Space Relative Humidity Sensors are not used with The PremierLink controller can monitor supply fan 50TCQ units at this time. operation through a field- - supplied/installed differential pressure switch. This sequence will prevent (or interrupt) Smoke Detector/Fire Shutdown (FSD) —...
  • Page 48: 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 band. TB1- - 12 terminal. Connect the CCN (ground) lead Communications Bus Wire Specifications: The CCN (typically WHT) to the unit’s TB1- - 14 terminal. Connect Communication Bus wiring is field- - supplied and the CCN (- - ) lead (typically BLK) to the unit’s TB1- - 16...
  • Page 49: Rtu Open Control System

    RTU Open Controller System efficiency. The RTU Open controller enables the unit to run in 100% stand- - alone control mode, Carrier’s i- - Vu Open network, or a Third Party Building Automation The RTU Open controller is factory- - mounted in the System (BAS).
  • Page 50 a50--- 9668 Fig. 64 - - Typical RTU Open System Control Wiring Diagram - - 208/230V and 460V Unit Shown...
  • Page 51: 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 52: 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.
  • Page 53: Outdoor Air Quality Sensor

    Connecting Discrete Inputs — IAQ Sensor Filter Status: The filter status accessory is a field- - installed J4-2 accessory. This accessory detects plugged filters. When installing this accessory, the unit must be configured for filter status by setting MENU Config Inputs input ...
  • Page 54: Local Access

    The third party connection to the RTU Open controller is Refer to the RTU Open v3 Integration Guide for more through plug J19. See Fig. 72 for wiring. detailed information on protocols, third party wiring, and networking. NOTE: Power must be cycled after changing the SW1- - 3 switch settings.
  • Page 55 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 Controller C14131 Fig. 73 - - PC Running Field Assistant Table 29 – LEDs The LEDs on the RTU Open show the status of certain functions If this LED is on...
  • Page 56: Outdoor Air Enthalpy Control

    Outdoor Air Enthalpy Control Smoke Detectors (P/N 33CSENTHSW) Smoke detectors are available as factory- - installed options on 50TCQ 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 economizer field- - installed accessory to be used with the EconoMi$er2 or in combination of supply air and return air.
  • Page 57 Step 1 Step 2 Step 3 C12283 Fig. 77 - - Completing Installation of Return Air Smoke Sensor Legend and Notes for Tables 30 and 31 LEGEND: Example: Supply voltage is 230-3-60 BRKR Circuit breaker C.O. Convenience outlet AB = 224 v DISC.
  • Page 63: Step 12 - Adjust Factory- -Installed Options

    Unit Without Economizer or Economizer 2 Position Damper 2 Position Damper C08631 Fig. 78 - - EconoMi$er IV Wiring Step 12 — Adjust Factory- -Installed Options EconoMi$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 Board,...
  • Page 64: Step 14 - Check Belt Tension

    Step 14 — Check Belt Tension 2. Set the tension gauge to the desired tension (see Table 1 in Fig. 79). Place the large O- - ring at that point. Measure the belt span length as shown in Fig. 79. 3.
  • Page 65 BLOWER PULLEY V-BELT MOTOR PULLEY MOTOR MOUNTING MOTOR MOUNTING BOLTS (4) PLATE C11504 Fig. 80 - - Belt Drive Motor Mounting...
  • Page 66 Catalog No: 50TCQ---4---7---02SI ECarrier Corporation 2017 Edition Date: 09/17 Printed in U.S.A. Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 50TCQ--- 4--- 7--- 01SI...
  • Page 67: 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 68 TEMPERATURES OUTDOOR- - AIR TEMPERATURE _F DB (DRY BULB) RETURN- - AIR TEMPERATURE _F DB _F WB (WET BULB) HEAT SUPPLY AIR TEMPERATURE PRESSURES REFRIGERANT SUCTION CIRCUIT A PSIG CIRCUIT B PSIG REFRIGERANT DISCHARGE CIRCUIT A PSIG CIRCUIT B PSIG j VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS GENERAL j ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS (IF EQUIPPED)

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