Page 1: Table Of Contents
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$er X (Factory- - Installed Option) ..Economizer Controls ......Product Description .
Page 3: Safety Considerations
SAFETY CONSIDERATIONS WARNING Improper installation, adjustment, alteration, service, ELECTRICAL SHOCK HAZARD maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal Failure to follow this warning could cause personal injury or property damage. Consult a qualified installer, injury or death.
Page 4: Rated Indoor Airflow (Cfm)
It is recommended with models using Staged Air Volume (SAV) 2-speed indoor fan motor control that the EconoMi$er X system be used because it contains two ventilation set points, one for each fan speed. a50--- 9706 Fig. 1 - - 50TCQD14 Model Number Nomenclature (Example)
Page 5 C14192 Fig. 2 - - Unit Dimensional Drawing – 14 Size Unit...
Page 6 C14193 Fig. 2 - - Unit Dimensional Drawing – 14 Size Unit (cont.)
Page 7: Refrigeration System Components
C09897B 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 8 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...
Page 9: Installation
Confirm before installation of unit that voltage, amperage and circuit protection requirements listed on unit data Table 4 – Operating Weights plate agree with power supply provided. 50TCQD14 UNITS LB (KG) Step 4 — Provide Unit Support Base Unit 1370 (623) Roof Curb Mount —...
Page 10 C10365 Fig. 6 - - Roof Curb Details...
Page 11: Slab Mount (Horizontal Units Only)
CAUTION PROPERTY DAMAGE HAZARD Failure to follow this caution may result in damage to roofing materials. Membrane roofs can be cut by sharp sheet metal MAXIMUM ALLOWABLE edges. Be careful when placing any sheet metal parts DIFFERENCE IN. (MM) on such roof. 0.5″...
Page 12: Step 7 - Convert To Horizontal And Connect
( 36” - 54” ) “C” DETAIL “A” DUCT END “A” SEE DETAIL “A” C10281 DIMENSIONS MAX WEIGHT UNIT 50TCQD14 2015 116.0 2945 55.5 1410 59.5 1510 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: Two Position Damper Hood Removal And Setup
Two Position Damper Hood Removal and Setup - - Factory Option — 1. The hood is shipped in knock- - down form and assembled to a metal support tray using plastic stretch wrap. Located in the return air compartment, the assembly’s metal tray is attached to the basepan and also attached to the damper using two plastic tie- - wraps.
Page 14: Step 9 - - Install External Condensate Trap And Line
Step 9 — Install External Condensate Trap and PANEL Line The unit has one -inch condensate drain connection on the end of the condensate pan and an alternate connection on the bottom. See Fig. 17. Unit airflow configuration INDOOR COIL does not determine which drain connection to use.
Page 15: Step 10 - Make Electrical Connections
Step 10 — Make Electrical Connections WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Do not use gas piping as an electrical ground. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur.
Page 16: All Units
COPPER Operation on improper line voltage or excessive phase WIRE ONLY imbalance constitutes abuse and may cause damage to electrical components. Such operation would ALUMINUM WIRE invalidate any applicable Carrier warranty. A93033 Fig. 24 - - Disconnect Switch and Unit...
Page 17 a50--- 9707 Fig. 26 - - Typical 50TCQ Control Wiring Diagram...
Page 18 a50--- 9708 Fig. 27 - - Typical 50TCQ Power Wiring Diagram (208/230V 3 Phase 60Hz unit shown)
Page 19: Units Without Factory- - Installed
Units Without Factory- - Installed 9. Install the handle on to the painted cover horizontally Non- - Fused Disconnect — with the red arrow pointing to the left. 10. Secure the handle to the painted cover with (2) screws When installing units, provide a disconnect switch of and lock washers supplied.
Page 20 Duty Cycle: the unit- - powered convenience outlet has a duty cycle limitation. The transformer is intended to Pwd-CO provide power on an intermittent basis for service tools, Fuse Switch lamps, etc; it is not intended to provide 15- - amps loading for continuous duty loads (such as electric heaters for overnight use).
Page 21: Factory- - Option Thru- - Base Connections
(field- - supplied) or a PremierLinkt controller (available as a factory- - installed option or as a field- - installed accessory, for use on a Carrier Comfort Network or as a stand alone control) or the RTU Open controller for...
Page 22: Central Terminal Board
For wire runs up to 50 ft. (15 m), use no. 18 AWG (American Wire Gage) insulated wire (35_C minimum). For 50 to 75 ft. (15 to 23 m), use no. 16 AWG insulated wire (35_C minimum). For over 75 ft. (23 m), use no. 14 AWG insulated wire (35_C minimum).
Page 23 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 Y2 Cool 2 DI, 24Vac P2--- 4 CTB--- Y2...
Page 24: Unit Without Thru- - Base Conversion Kit
Defrost — The defrost control mode is a time/temperature sequence. There are two time components: The continuous run period and the test/defrost cycle period. The temperature component is provided by Defrost Thermostat 1 and 2 (DFT1 and DFT2) mounted on the outdoor coil.
Page 25: Single Point Boxes
SINGLE HEATER MANUAL RESET POINT BOX COVERS LIMIT SWITCH DISCONNECT MOUNTING LOCATION SINGLE POINT HEATER HEATER HEATER MODULE MODULE MOUNTING MOUNTING (LOCATION 1) (LOCATION 2) BRACKET SCREW C10029 Fig. 39 - - Typical Component Location Single Point Boxes — Heater and Supplementary Fuses — When heaters are installed, power wiring to both heaters and the rest of the unit is connected via the single point When the unit MOCP device value exceeds 60- - A,...
Page 26 NOTE: Optional Outdoor Temperature Control at One Heater Stage – Move either heater wire to this terminal and connect outdoor temperature switch between 2nd and 3rd terminals. C10354 Fig. 41 - - Accessory Electric Heater Control Connections...
Page 27: 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 28: Outputs
Outputs — Table 7 – 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 29: Co 2 Sensor Wiring
for the power supplies are common. See Fig. 45 for CO sensor wiring. SENSOR (HOT) BLACK YELLOW ANALOG BROWN – Switch ORANGE Label GREEN POWER SUPPLY. PROVIDE DISCONNECT Switches MEANS AND OVERLOAD PROTECTION AS REQUIRED. C14158 Fig. 45 - - Wiring for CO Sensor Interface Overview This section describes how to use the economizer’s user...
Page 30: 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 31 Table 11 - - 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 32 Table 11 - - 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 33 Table 11 - - 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 34 Table 11 - - 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 35 Table 11 - - 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 36: Sequence Of Operation
Table 12 – 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 37 Table 15 – Enthalpy Operation No DCV (CO Sensor) - - 1 Speed Fan Demand Outside Air --- Controlled Good to Y1I 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 38 Table 17 – Dry Bulb Operation No DCV (CO Sensor) - - 2 Speed Fan Demand Outside Air --- Controlled Good to Y1I 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 39 Table 19 – Enthalpy Operation No DCV (CO Sensor) - - 2 Speed Fan Demand Outside Air --- Controlled Good to Y1I 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 High...
Page 40: Enthalpy Settings
ECONOMIXING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE C12015 Fig. 47 - - Single Enthalpy Curve and Boundaries Table 21 – Single Enthalpy and Dual Enthalpy High Limit Curves (EN Units) Point P1 Point P2 Enthalpy Temp.
Page 41: Checkout
S The Y2 In call will be satisfied with the damper 100% NOTE: See “Interface Overview” on page 29 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 42: Premierlinkt Controller (Factory Option)
TEMPERATURE SENSOR SUPPLY AIR RETURN AIR The PremierLink controller requires the use of a Carrier electronic thermostat or a CCN connection for time broadcast to initiate its internal timeclock. This is necessary for broadcast of time of day functions C08200 Fig.
Page 43 a50--- 9710 Fig. 50 - - PremierLinkt Controller Wiring Schematic...
Page 44: Outdoor Air Temperature (Oat) Sensor
Space Sensors — The PremierLink controller is factory- - shipped configured J6-7 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 45: Configure The Unit For Thermostat Mode
If the 50TCQ unit has an economizer system and SPACE free- - cooling operation is required, a sensor representing THERMOSTAT THERMOSTAT Return Air Temperature must also be connected (field- - supplied and installed). This sensor may be a T- - 55 Space Sensor (see Fig.
Page 46 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 47: Economizer Controls
Economizer Controls sensor. See Fig. 56. Connect the 4- - 20 mA terminal to terminal TB1- - 9 and connect the SIG COM terminal to Indoor Air Quality (CO Sensor) — terminal TB1- - 11. See Fig. 57. The indoor air quality sensor accessory monitors space IAQ Sensor carbon dioxide (CO ) levels.
Page 48: Space Relative Humidity Sensor
Space Relative Humidity Sensor — Install the differential pressure switch in the supply fan section according to switch manufacturer’s instructions. The space relative humidity sensor is not used with Arrange the switch contact to be open on no flow and to 50TCQ models at this time.
Page 49: Ccn Communication Bus
1000- - ft section. Optically isolated RS- - 485 Table 26 for the recommended color code. repeaters are required every 1000 ft. Table 26 – Color Code Recommendations NOTE: Carrier device default is 9600 baud. Communications Bus Wire Specifications: The CCN CCN BUS WIRE CCN PLUG PIN...
Page 50: Rtu Open Controller System
RTU Open Controller System efficiency. 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 System The RTU Open controller is factory- - mounted in the (BAS).
Page 51 a50--- 9711 Fig. 66 - - RTU Open Controller System Wiring Diagram...
Page 52: 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 53: Space Temperature (Spt) Sensors
T- - 59. Connect the SEN terminal (BLU) to the RTU Open controller at J20- - 1. There are two types of SPT sensors available from Carrier, Connect the COM terminal (BRN) to J20- - 2. Connect the resistive input non-communicating (T55, T56, and T59) SET terminal (STO or BLK) to J20- - 3.
Page 54: Outdoor Air Quality Sensor
To connect the sensor to the control, identify the positive Fire Shutdown Switch configuration, MENU Config Inputs input 5, identifies the (4 to 20 mA) and ground (SIG COM) terminals on the    sensor. See Fig. 56. Connect the 4- - 20 mA terminal to the normally open status of this input when there is no fire RTU Open controller at J4- - 2 and connect the SIG COM alarm.
Page 55: Local Access
The RTU Open controller can be set to communicate on Local Access four different protocols: BACnet, Modbus, N2, and LonWorks. Switch 3 (SW3) on the board is used to set Wall Mounted Equipment Toucht Interface protocol and baud rate. Switches 1 and 2 (SW1 and SW2) The Equipment Touch interface is a wall mounted interface are used to set the board’s network address.
Page 56: Rtu Open Controller Troubleshooting
Field Assistant LEDs should reflect communication traffic based on the baud rate set. The higher the baud rate the more solid the Field Assistant is a computer program included with the LEDs will appear. See Table 28. purchase of the Tech Tool Kit (USB-TKIT). This is a field Tech Tool to set-up, service, or download application NOTE: Refer to the RTU Open Multi- - Protocol Controller software to the RTU Open controller and includes a USB...
Page 57: 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$er or in combination of supply air and return air.
Page 58 Step 1 Step 2 Step 3 C12283 Fig. 79 - - Completing Installation of Return Air Smoke Sensor Legend and Notes for Tables 29 and 30 LEGEND: BRKR Circuit breaker C.O. Convenience outlet DISC. Disconnect Full load amps Locked rotor amps Minimum circuit amps P .E.
Page 63: Step 11 - Adjust Factory- -Installed Options
Unit Without Economizer or Economizer 2 Position Damper 2 Position Damper a50--- 9713 Fig. 80 - - 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 Terminal integrated barometric relief) Board (CTB), at terminals marked “Smoke Shutdown”.
Page 64: Step 13 - Check Belt Tension
Step 13 — Check Belt Tension 2. Set the tension gauge to the desired tension (see Table 1 in Fig. 81). Place the large O- - ring at that point. Measure the belt span length as shown in Fig. 81. 3.
Page 65 BLOWER PULLEY V-BELT MOTOR PULLEY MOTOR MOUNTING MOTOR MOUNTING BOLTS (4) PLATE C11504 Fig. 82 - - Belt Drive Motor Mounting...
Page 66 Catalog No: 50TCQ---14---01SI 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--- 07SI...
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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50tcqd

Carrier 50TCQD14 Installation Instructions Manual

Theinstallation.

Safety Considerations

Refrigeration System Components

Installation

Step 8 - Install Outside Air Hood

Step 9 - - Install External Condensate Trap and Line

Step 10 - Make Electrical Connections

Economi$Er R X (Factory- -Installed Option)

Specifications

Interface Overview

Menu Structure

Setup and Configuration

Sequence of Operation

Enthalpy Settings

Two- -Speed Fan Operation

Checkout

Troubleshooting

Premierlinkt Controller (Factory Option)

Field Connections

Unit Start- - up Checklist

Quick Links

TABLE OF CONTENTS

Troubleshooting

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Summary of Contents for Carrier 50TCQD14

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