Carrier 50TCQA Installation Instructions Manual
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Carrier 50TCQA Installation Instructions Manual

Single package rooftop heat pump with puron (r---410a) refrigerant
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Table of Contents

50TCQA
Single Package Rooftop
Heat Pump
with Puronr (R---410A) Refrigerant
Sizes 04 --- 07
NOTE: Read the entire instruction manual before starting
the installation

TABLE OF CONTENTS

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SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical
shock or other conditions which may cause personal
1
injury or property damage. Consult a qualified installer,
service agency, or your distributor or branch for
4
information or assistance. The qualified installer or
4
agency must use factory- - authorized kits or accessories
5
when modifying this product. Refer to the individual
instructions packaged with the kits or accessories when
5
installing.
5
Follow all safety codes. Wear safety glasses and work
7
gloves. Use quenching cloths for brazing operations and
7
have a fire extinguisher available. Read these instructions
8
thoroughly and follow all warnings or cautions attached to
the unit. Consult local building codes and appropriate
8
national electrical codes (in USA, ANSI/NFPA70,
10
National Electrical Code (NEC); in Canada, CSA C22.1)
11
for special requirements.
44
It is important to recognize safety information. This is the
45
safety- - alert symbol
unit and in instructions or manuals, be alert to the
potential for personal injury.
Understand the signal words DANGER, WARNING,
CAUTION, and NOTE. These words are used with the
safety- - alert symbol. DANGER identifies the most serious
hazards which will result in severe personal injury or
death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify
unsafe practices, which may result in minor personal
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced
installation, reliability, or operation.
. When you see this symbol on the

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  • Page 1: Table Of Contents

    50TCQA Single Package Rooftop Heat Pump with Puronr (R---410A) Refrigerant Sizes 04 --- 07 Installation Instructions NOTE: Read the entire instruction manual before starting the installation TABLE OF CONTENTS SAFETY CONSIDERATIONS ....
  • Page 2 CUT HAZARD Failure to follow this caution may result in personal injury. Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing heat pump units.
  • Page 3 Vertical Connections / Economizer Horizontal Connections / Economizer C09001 Fig. 1 - - Unit Dimensional Drawing – 04 — 07 Size Units...

  • Page 4: Installation

    Fig. 1 - - Unit Dimensional Drawing – 04 — 07 Size Unit (cont.) INSTALLATION Jobsite Survey Complete the following checks before installation. 1. Consult local building codes and the NEC (National Electrical Code) ANSI/NFPA 70 for special installa- tion requirements. 2.

  • Page 5: Step 2 - - Plan For Sequence Of Unit Installation

    Make electrical connections Install other accessories Frame- - mounted installation — Frame- - mounted applications generally follow the sequence for a curb installation. Adapt as required to suit specific installation plan. 50TCQA Component Base Unit 505 (229) Economizer Vertical 80 (36)
  • Page 6 ROOFCURB UNIT SIZE ACCESSORY 1’ - 2” CRRFCURB001A02 [356] 50TCQA04-07 2’ - 0” CRRFCURB002A02 [610] Fig. 3 - - Roof Curb Details C08548...

  • Page 7: Step 5 - Field Fabricate Ductwork

    MAXIMUM ALLOWABLE DIFFERENCE IN. (MM) 0.5” (13) Fig. 4 - - Unit Leveling Tolerances Step 5 — Field Fabricate Ductwork Cabinet return-air static pressure (a negative condition) shall not exceed 0.35 in. wg (87 Pa) with economizer or 0.45 in. wg (112 Pa) without economizer. For vertical ducted applications, secure all ducts to roof curb and building structure.

  • Page 8: Step 7 - - Convert To Horizontal & Connect Ductwork

    Positioning on Curb — Position unit on roof curb so that the following clearances are maintained: in. (6.4 mm) clearance between the roof curb and the base rail inside the front and rear, 0.0 in. clearance between the roof curb and the base rail inside on the duct end of the unit.
  • Page 9 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 compartment, the assembly’s metal tray is attached to the basepan and also attached to the damper using two plastic tie- - wraps.

  • Page 10: Step 9 - - Install External Condensate Trap And Line

    Economizer Hood and Two- - Position Hood — NOTE: If the power exhaust accessory is to be installed on the unit, the hood shipped with the unit will not be used and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly.

  • Page 11: Step 10 - Make Electrical Connections

    MINIMUM PITCH 1” (25mm) PER BASE RAIL 10’ (3m) OF LINE 2˝ (51) MIN OPEN VENT TO ROOF DRAIN DRAIN PLUG NOTE: Trap should be deep enough to offset maximum unit static difference. A 4” (102) trap is recommended Fig. 14 - - Condensate Drain Piping Details All units must have an external trap for condensate drainage.
  • Page 12 1 Phase Unit) Tag- - out this switch, if necessary. Two types of convenience outlets are offered on 50TCQA models: Non- - powered and unit- - powered. Both types provide circuit- - interrupter) duplex receptacle rated at 15- - A behind a hinged waterproof access cover, located on the end panel of the unit.
  • Page 13 Mount the weatherproof cover to the backing plate as shown in Fig. 18. Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover. Check for full closing and latching. COVER – WHILE-IN-USE WEATHERPROOF Fig.
  • Page 14 (field- - supplied) or a PremierLink 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- - MP Controller for Building...
  • Page 15 RACEWAY HOLE IN END PANEL (HIDDEN) Fig. 22 - - Field Control Wiring Raceway Electric Heaters 50TCQ 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 switches and a control contactor.
  • Page 16 Fig. 25 - - Typical Module Installation Single Point Boxes and Supplementary Fuses — When the unit MOCP device value exceeds 60- - A, unit- - mounted supplementary fuses are required for each heater circuit. These fuses are included in accessory Single Point Boxes, with power distribution and fuse blocks.
  • Page 17 (SAT) sensor. The outdoor air temperature (OAT) sensor is included in the FIOP/accessory EconoMi$ert2 package. 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 (occupied/unoccupied).
  • Page 18 C09014 Fig. 30 - - PremierLink Wiring Schematic...
  • Page 19 PremierLink factory- - shipped configured for Space Sensor Mode. A Carrier T- - 55 or T- - 56 space sensor must be used. T- - 55 space temperature sensor provides a signal of space temperature to the PremierLink control. T- - 56 provides...
  • Page 20 SPACE THERMOSTAT OUTDOOR AIR APPLICATION TEMPERATURE SENSOR Differential Dry Bulb Temperature with Included --- PremierLink CRTEMPSN001A00 (PremierLink requires 4---20 mA Actuator) Single Enthalpy with PremierLink Included --- (PremierLink requires Not Used 4---20mA Actuator) Differential Enthalpy with PremierLink Included --- (PremierLink requires Not Used 4---20mA Actuator) NOTES:...
  • Page 21 IAQ ---COM/OAQ ---COM/RH ---COM OAQ ---SEN/RH ---SEN CCN Gnd (WHT) AUX OUT(Power Exhaust) LEGEND: --- Space Temperature Sensor --- Space Temperature Sensor --- Carrier Comfort Network (communication bus) CMPSAFE --- Compressor Safety FILTER --- Dirty Filter Switch TB1 TERMINAL IAQ ---COM/OAQ ---COM/RH ---COM...
  • Page 22 If the 50TCQ unit has an economizer system and free- - cooling operation is required, a sensor representing Return Air Temperature must also be connected (field- - supplied and installed). This sensor may be a T- - 55 Space Sensor (see Fig. 31) installed in the space or in the return duct, or it may be sensor PNO 33ZCSENSAT, installed in the return duct.
  • Page 23 OAQ sensor. See Fig. 38. Connect the 4 to 20 mA terminal to the TB1- - 13 terminal of the 50TCQ. Connect the SIG COM terminal to the TB1- - 11 terminal of the 50TCQA. See Fig. 41. OAQ Sensor/RH Sensor 24 VAC Fig.
  • Page 24 On 50TCQ units equipped with factory- - installed Smoke Detector(s), the smoke detector controller implements the unit shutdown through its NC contact set connected to the unit’s CTB input. The FSD function is initiated via the smoke detector’s Alarm NO contact set. The PremierLink communicates the smoke detector’s tripped status to the CCN building control.
  • Page 25 4000 ft, with no more than 60 total devices on any 1000- - ft section. Optically isolated RS- - 485 repeaters are required every 1000 ft. NOTE: Carrier device default is 9600 band. COMMUNICATION BUS WIRE SPECIFICATIONS — The CCN Communication Bus wiring is field- - supplied and field- - installed.
  • Page 26 RTU- -MP control system The RTU- - MP controller, see Fig. 47, provides expanded stand- - alone operation of the HVAC system plus connection and control through communication with several Building Automation Systems (BAS) through popular third- - party network systems. The available network systems are BACnet MP/TP, Modbus and Johnson J2.
  • Page 27 C09015 Fig. 49 - - RTU- - MP System Control Wiring Diagram...
  • Page 28 Parallel pins J5--- 1 = J2--- 6, J5--- 3 = J1--- 10, J5--- 5 = J1--- 2 are used for field --- installation. The RTU- - MP controller requires the use of a Carrier space sensor. A standard thermostat cannot be used with the RTU- - MP system.
  • Page 29 Phoenix connectors and then reconnect the connectors to the board. Space Temperature (SPT) Sensors A field- - supplied Carrier space temperature sensor is required with the RTU- - MP to monitor space temperature. There are 3 sensors available for this application:...
  • Page 30 enthalpy sensor and the (SR) terminal on the enthalpy controller. NOTE: The enthalpy control must be set to the “D” setting for differential enthalpy control to work properly. Indoor Air Quality (CO sensor) — The indoor air quality sensor accessory monitors space carbon dioxide (CO levels.
  • Page 31 Remote Occupancy The remote occupancy accessory is a field- - installed accessory. This accessory overrides the unoccupied mode and puts the unit in occupied mode. When installing this accessory, the unit must be configured for remote occupancy by setting MENU Config →...
  • Page 32 Local Access BACview Handheld The BACview is a keypad/display interface used to connect to the RTU- - MP to access the control information, read sensor values, and test the RTU, see Fig. 57. This is an accessory interface that does not come with the MP controller and can only be used at the unit.

  • Page 33: Smoke Detectors

    The LEDs on the RTU- - MP show the status of certain functions If this LED is on... Status is... Power The RTU MP has power The RTU MP is receiving data from the network segment The RTU MP is transmitting data over the network segment The digital output is active The Run and Error LEDs indicate control module and network status If Run LED shows...
  • Page 34 terminal for connecting to the controller. Each sensor has four LEDs (for Power, Trouble, Alarm and Dirty) and a manual test/reset button (on the left- - side of the housing). Duct smoke sensor controller Conduit nuts (supplied by installer) Conduit support plate Terminal block cover Controller housing and electronics...
  • Page 35 downward, into the return air stream. The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location. (This sensor is shipped in a flat- - mounting location.
  • Page 36 ELECTRIC HEATER TYPE (kW) 3.3/4.4 15.9/18.3 4.9/6.5 23.5/27.1 6.5/8.7 31.4/36.3 7.9/10.5 37.9/43.8 9.8/13.0 46.9/54.2 3.3/4.4 9.2/10.6 4.9/6.5 13.6/15.6 6.5/8.7 18.1/20.9 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 3.3/4.4 9.2/10.6 4.9/6.5 13.6/15.6 6.5/8.7 18.1/20.9 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 3.3/4.4 9.2/10.6 4.9/6.5 13.6/15.6 HIGH 6.5/8.7 18.1/20.9 7.9/10.5 21.9/25.3...
  • Page 37 Table 10 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER TYPE (kW) 3.3/4.4 15.9/18.3 4.9/6.5 23.5/27.1 6.5/8.7 31.4/36.3 7.9/10.5 37.9/43.8 9.8/13.0 46.9/54.2 3.3/4.4 9.2/10.6 4.9/6.5 13.6/15.6 6.5/8.7 18.1/20.9 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 3.3/4.4 9.2/10.6 4.9/6.5 13.6/15.6 6.5/8.7 18.1/20.9 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 3.3/4.4...
  • Page 38 Table 10 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER TYPE (kW) 3.3/4.4 15.9/18.3 6.5/8.7 31.4/36.3 9.8/13.0 46.9/54.2 13.1/17.4 62.8/72.5 15.821.0 75.8/87.5 4.9/6.5 13.6/15.6 6.5/8.7 18.1.20.9 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 4.9/6.5 13.6/15.6 6.5/8.7 18.1.20.9 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 4.9/6.5 13.6/15.6 6.5/8.7 18.1.20.9 HIGH...
  • Page 39 Table 10 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER TYPE (kW) 3.3/4.4 15.9/18.3 6.5/8.7 31.4/36.3 9.8/13.0 46.9/54.2 13.1/17.4 62.8/72.5 15.821.0 75.8/87.5 4.9/6.5 13.6/15.6 6.5/8.7 18.1.20.9 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 4.9/6.5 13.6/15.6 6.5/8.7 18.1.20.9 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 4.9/6.5 13.6/15.6 6.5/8.7 18.1.20.9 HIGH...
  • Page 40 Table 10 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER TYPE (kW) 4.9/6.5 23.5/27.1 6.5/8.7 31.4/36.3 9.8/13.0 46.9/54.2 13.1/17.4 62.8/72.5 15.821.0 75.8/87.5 4.9/6.5 13.6/15.6 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 19.9/26.5 55.2/63.8 4.9/6.5 13.6/15.6 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 19.9/26.5 55.2/63.8 4.9/6.5...
  • Page 41 Table 10 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER TYPE (kW) 4.9/6.5 23.5/27.1 6.5/8.7 31.4/36.3 9.8/13.0 46.9/54.2 13.1/17.4 62.8/72.5 15.821.0 75.8/87.5 4.9/6.5 13.6/15.6 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 19.9/26.5 55.2/63.8 4.9/6.5 13.6/15.6 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 19.9/26.5 55.2/63.8 4.9/6.5...
  • Page 42 Table 10 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER TYPE (kW) 4.9/6.5 13.6/15.6 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 19.9/26.5 55.2/63.8 4.9/6.5 13.6/15.6 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 19.9/26.5 55.2/63.8 4.9/6.5 13.6/15.6 7.9/10.5 21.9/25.3 HIGH 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 19.9/26.5 55.2/63.8...
  • Page 43 Table 10 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER TYPE (kW) 4.9/6.5 13.6/15.6 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 19.9/26.5 55.2/63.8 4.9/6.5 13.6/15.6 7.9/10.5 21.9/25.3 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 19.9/26.5 55.2/63.8 4.9/6.5 13.6/15.6 7.9/10.5 21.9/25.3 HIGH 12.0/16.0 33.4/38.5 15.8/21.0 43.8/50.5 19.9/26.5 55.2/63.8...

  • Page 44: Step 11 - Adjust Factory- -Installed Options

    Legend and Notes for Table 10 LEGEND: --- Convenient outlet DISC --- Disconnect --- Full load amps --- Indoor fan motor --- Locked rotor amps --- Minimum circuit amps MOCP --- Maximum over current protection --- Power exhaust UNPWR CO --- Unpowered convenient outlet NOTES: 1.

  • Page 45: Step 12 - Install Accessories

    Step 12 — Install Accessories Available accessories include: Roof Curb Thru- - base connection kit (must be installed before unit is set on curb) Manual outside air damper Two- - Position motorized outside air damper EconoMi$er IV (with control and integrated barometric relief) EconoMi$er2 (without control/for external signal and integrated barometric relief)
  • Page 48 Catalog No: 50TCQ---01SI Copyright 2009 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 02/10/09 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: NEW...

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