Carrier 50TC*17 Series Service And Maintenance Instructions
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Carrier 50TC*17 Series Service And Maintenance Instructions

Nominal 15 to 27.5 tons, with puron r-410a refrigerant
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50TC*17- 30
Nominal 15 to 27.5 Tons
With Puron ® (R-410A) Refrigerant
Service and Maintenance Instructions

TABLE OF CONTENTS

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SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment
7
can be hazardous due to system pressure and electrical
8
components. Only trained and qualified service personnel
should
install,
10
equipment. Untrained personnel can perform the basic
maintenance functions of replacing filters. Trained service
personnel should perform all other operations.
17
When working on air-conditioning equipment, observe
19
precautions in the literature, tags and labels attached to
the unit, and other safety precautions that may apply.
20
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations.
24
Have
fire
extinguishers
26
operations.
27
Follow all safety codes. Consult local building codes and
National Electrical Code (NEC) for special requirements.
28
Recognize safety information. This is the safety−alert
34
symbol
. When you see this symbol on the unit and in
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instructions or manuals, be aware of the potential for
physical injury hazards.
36
Understand the signal words DANGER, WARNING, and
38
CAUTION. These words are used with the safety−alert
40
symbol. DANGER identifies a hazardous situation which,
if not avoided, will result in death or severe personal
49
injury. WARNING indicates a hazardous situation which,
if not avoided, could result in death or personal injury.
50
CAUTION indicates a hazardous situation which, if not
51
avoided, could result in minor
product and property damage. NOTICE is used to address
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practices not related to physical injury. NOTE is used to
highlight suggestions which will result in enhanced
52
installation, reliability, or operation.
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repair,
or
service
air-conditioning
available
for
to moderate injury or
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61
67
80
81
all
brazing

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Summary of Contents for Carrier 50TC*17 Series

  • Page 1: Table Of Contents

    50TC*17- 30 Nominal 15 to 27.5 Tons With Puron ® (R-410A) Refrigerant Service and Maintenance Instructions TABLE OF CONTENTS APPENDIX II. PHYSICAL DATA ....APPENDIX III. FAN PERFORMANCE .
  • Page 2 CAUTION CAUTION CUT HAZARD UNIT DAMAGE HAZARD Failure to follow this caution may result in personal Failure to follow this caution can result in reduced injury. unit performance or unit shutdown. Sheet metal parts may have sharp edges or burrs. Use High velocity water from a pressure washer, garden care and wear appropriate protective clothing, safety hose, or compressed air should never be used to clean...

  • Page 3: Unit Arrangement And Access

    UNIT ARRANGEMENT AND Seasonal Maintenance ACCESS These items should be checked at the beginning of each season (or more often if local conditions and usage General patterns dictate): Fig. 1 and Fig. 2 show general unit arrangement and Air Conditioning access locations.

  • Page 4: Supply Fan (Blower) Section

    Removing the Return Air Filters Supply Fan Assembly 1. Remove the return air filter and indoor coil access The supply fan system consists of two forward−curved panel. See Fig. 1. centrifugal blower wheels mounted on a solid blower shaft 2. Reach inside and remove filters from the filter rack. that is supported by two greasable pillow block concentric 3.
  • Page 5 tool, such as Browning’s “Belt Tension Checker” (p/n 8. Check the V−belt tension. Make adjustments as nec- 1302546 or equivalent tool); tension should be 6−lbs at a essary. 5/8−in. (1.6 cm) deflection when measured at the center 9. Re−tighten the four motor mounting nuts. line of the belt span.

  • Page 6: Staged Air Volume (Sav) Control: 2−Speed Fan With Variable Frequency Drive (Vfd)

    surfaces are signs of improper belt tension and/or belt LOCKING COLLAR slippage. Pulley replacement may be necessary. Changing Fan Speed 1. Shut off the main unit power supply, and use the ap- proved Lockout/Tagout procedures. 2. Loosen the belt by loosening the motor adjustment bolts as described in the Belt Adjustment section above.

  • Page 7: Additional Vfd Installation And Troubleshooting

    NOTE: The Remote VFD Keypad is a field-installed op­ 3. Disconnect all electrical leads to the motor. tion. It is not included as part of the Factory installed VFD 4. Loosen the two jack bolt jamnuts on the motor option. See “Variable Frequency Drive (VFD) Installa­ mounting bracket.

  • Page 8: Condenser Coil Service

    23. Install the motor drive V-belt to the motor pulley and CAUTION blower wheel pulley. See CAUTION. 24. Align the motor pulley and blower wheel pulley using EQUIPMENT DAMAGE HAZARD a straight edge. See Fig. 7. Failure to follow this CAUTION can result in equipment 25.
  • Page 9 Periodic cleaning with TotalineR environmentally sound coil cleaner is essential to extend the life of coils. This cleaner available from Carrier Replacement Components Division as p/n: P902- 0301 for one-gallon C08206 (3.8L) container, and P902- 0305 for a 5-gallon (18.9L) Fig.

  • Page 10: Evaporator Coils

    If there is dirt below the surface of the coil, coil cleaner is essential to extend the life of the coils. This use the TotalineR environmentally sound coil cleaner. cleaner is available from Carrier Replacement Parts Division (p/n: P902- 0301 for one-gallon (3.8L) container,...
  • Page 11 2. Remove all surface loaded fibers and dirt with a vacu- the liquid header, located at the entrance to each um cleaner as described above. evaporator coil circuit path. These are non−adjustable. Service requires replacing the entire liquid header 3. Thoroughly wet finned surfaces with clean water and assembly.

  • Page 12: Himidi−Mizerr Dehumidification System

    HIMIDI−MIZERR ADAPTIVE During the Reheat1 or Subcooling mode, the liquid refrigerant flows from the outdoor compressor through the DEHUMIDIFICATION SYSTEM condenser coil to the Reheat1 (RH1.x) 3−way valve and on to the Humid−MizerR coil. The Reheat2 (RH2.x) Units with the factory−equipped Humidi−MiZerR option valve is closed.
  • Page 13 The Reheat1 and Reheat2 modes are available when the solenoid valve is open ahd eht CSV solenoid is closed. unit is not in a heating mode and when the Low Ambient See Fig. 18 schematic for system refrigerant flow. Lockout Switch is closed. Subcooler/Reheat Coil When there is both cooling demand (thermostat Y1 The Subcooler/Reheat Coil is mounted across the leaving...
  • Page 14 RH2.x VALVE RH1.x VALVE HUMIDI-MIZER COIL CONDENSER COIL OUTDOOR AIR COMPRESSOR VALVE EVAPORATOR COIL = CLOSED VALVE = OPEN VALVE INDOOR AIR = 3-WAY VALVE C07124A Fig. 18 − Hot Gas Reheat Mode (Reheat 2) – Humidi−MiZerR System Table 2 – Humidi−MiZerR Reheat Control Board I/O Connection Unit Point Name...
  • Page 15 Table 3 – Inputs/Modes/Outputs Summary COMP COMP / LT­ MODE LSV2 DSV1 DSV2 OFF OFF ON Normal ON=G OFF ON=R OFF OFF On Normal Cool1 ON=Y ON=G OFF ON=R OFF ON Normal Cool2 0N=Y2 ON=G OFF ON=R Normal Heat 1 ON=G OFF ON=R OFF OFF ON...
  • Page 16 Table 4 – Humidi−MiZerR Troubleshooting PROBLEM CAUSE REMEDY General cooling mode problem See Cooling Service Troubleshooting (Table 4). No dehumidification demand See No Dehumidification Demand, below. Subcooling Reheat Mode Will Not Activate CRC relay operation See CRC Relay Operation, below. Circuit RLV, CLV or LDV valve problem See CLV, RLV or LDV Valve Operation, below.

  • Page 17: Thermostatic Expansion Valve (Txv)

    CAPILLARY TUBE EQUALIZER TUBE TO TXV FROM TXV VALVE 3. The needle valve on the pin carrier is spring loaded, TXV SENSOR BULB exerting pressure on the underside of the diaphragm. SENSOR BULB Therefore, the bulb pressure equals the evaporator INDENT 15.9 mm...
  • Page 18 and cannot be serviced separately; replace the entire core Apply compressor refrigerant oil to the check valve core’s body if necessary. Service tools are available from RCD bottom o-ring. Install the fitting body with 96 ±10 in-lbs that allow the replacement of the check valve core without of torque;...

  • Page 19: Puronr (R−410A) Refrigerant

    PURONR (R−410A) REFRIGERANT specified amount of refrigerant as listed on the unit's rating plate. This unit is designed for use with PuronR (R−410A) refrigerant. Do not use any other refrigerant in this Low−Charge Cooling system. CAUTION Using the Cooling Charging Charts (Figs. 23 thru 30), vary the refrigerant until the conditions of the appropriate chart are met.

  • Page 20: Cooling Charging Charts

    COOLING CHARGING CHARTS COOLING CHARGING CHART 17.5 Ton - Circuit A 115F / 46.1C 185.0 105F / 40.6C 175.0 95F / 35.0C 85F / 29.4C 165.0 75F / 23.9C 65F / 18.3C 155.0 55F / 12.8C 45F / 7.2C 145.0 135.0 125.0 115.0...
  • Page 21 COOLING CHARGING CHARTS (cont.) COOLING CHARGING CHART 20 Ton - Circuit A 115F / 46.1C 185.0 105F / 40.6C 175.0 95F / 35.0C 85F / 29.4C 165.0 75F / 23.9C 65F / 18.3C 155.0 55F / 12.8C 45F / 7.2C 145.0 135.0 125.0...
  • Page 22 COOLING CHARGING CHARTS (cont.) C12231A Fig. 26 − Cooling Charging Chart − 20 Ton (Circuit A) C12232A Fig. 27 − Cooling Charging Chart − 20 Ton (Circuit B)
  • Page 23 C12233A Fig. 28 − Cooling Charging Chart − 25 Ton (Circuit A) C12234A Fig. 29 − Cooling Charging Chart − 25 Ton (Circuit B)

  • Page 24: Compressors

    COMPRESSORS CAUTION Lubrication UNIT DAMAGE HAZARD The compressor is charged with the correct amount of oil Failure to follow this caution may result in damage to at the factory. components. The compressor is in a PuronR refrigerant system and WARNING uses a polyolester (POE) oil.
  • Page 25 Replacing the Filter Drier 3. Loosen the fan hub setscrews. 4. Adjust the fan height as shown in Fig. 30. Use the following steps to replace the Filter Drier. 5. Tighten the setscrews. 1. Using a PuronR (R410) gauge set, recover all refrig­ 6.

  • Page 26: Troubleshooting The Cooling System

    TROUBLESHOOTING THE COOLING SYSTEM Refer to Table 5 for additional troubleshooting topics. Table 5 – Cooling Service Troubleshooting PROBLEM CAUSE REMEDY Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer, or Replace defective component.

  • Page 27: Convenience Outlets

    CONVENIENCE OUTLETS WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death. Units with convenience outlet circuits may use multiple disconnects. 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.

  • Page 28: Smoke Detectors

    The primary leads to the convenience outlet transformer GFCI RECEPTACLE NOT INCLUDED COVER - WHILE-IN-USE are not factory−connected. Selection of primary power WEATHERPROOF source is a customer−option. If local codes permit, the transformer primary leads can be connected at the line−side terminals unit−mounted...
  • Page 29 wiring terminals. The controller has three LEDs: Power, from a fire, causes the sensor to signal an alarm state but Trouble and Alarm. A manual test/reset button is located dust and debris accumulated over time does not. on the cover face. Duct Smoke Sensor Duct Smoke Sensor Controller...
  • Page 30 Return Air without Economizer FIOP Smoke Detector Wiring and Response The sampling tube is located across the return air opening All units: The FIOP smoke detector is configured to on the unit basepan. See Fig. 37. The holes in the automatically shut down all unit operations when a smoke sampling tube face downward, into the return air stream.
  • Page 31 RETURN AIR SENSOR (Operating Position Shown) CONTROLLER MODULE SCREWS (2) SAMPLE TUBE C12050 Fig. 38 − Return Air Sampling Tube Location in Unit with Economizer 48TM502525 C12559 Fig. 39 − Typical Smoke Detector System Wiring...
  • Page 32 Sensor and Controller Tests NOTICE Sensor Alarm Test OPERATIONAL TEST NOTICE The sensor alarm test checks a sensor’s ability to signal an alarm state. This test requires that you use a field provided Failure to follow this NOTICE may result in an unnecessary evacuation of the facility.
  • Page 33 Changing the Dirt Sensor Test By default, sensor dirty test results are indicated by: S The sensor’s Dirty LED flashing. S The controller’s Trouble LED flashing. S The controller’s supervision relay contacts toggle. The operation of a sensor’s dirty test can be changed so that the controller’s supervision relay is not used to indicate test results.

  • Page 34: Indicators

    Alarm State NOTICE The smoke detector enters the alarm state when the amount of smoke particulate in the sensor’s sensing OPERATIONAL TEST NOTICE chamber exceeds the alarm threshold value. (See Table 7.) Failure to follow this NOTICE can result in an Upon entering the alarm state: unnecessary evacuation of the facility.

  • Page 35: Protective Devices

    Table 7 – Detector Indicators CONTROL OR INDICATOR DESCRIPTION Resets the sensor when it is in the alarm or trouble state. Activates or tests the sensor when it is in Magnetic test/reset switch the normal state. Alarm LED Indicates the sensor is in the alarm state. Trouble LED Indicates the sensor is in the trouble state.

  • Page 36: Premierlink ] Control

    Low Pressure Switch behind the fan access panel. The Must Hold and Must Trip values are listed on the side of the External Overload The system is protected against a loss of charge and low Breaker. evaporator coil loading condition by a low pressure switch located on the suction line near the compressor.
  • Page 37 C08199 Fig. 43 − PremierLinkt Controller The PremierLinkt controller is compatible with Carrier The PremierLinkt control is factory−mounted in the Comfort Networkr (CCN) devices. This control is 50TC unit’s main control box to the left of the LCTB. designed to allow users the access and ability to change Factory wiring is completed through harnesses connected factory−defined settings, thus expanding the function of...

  • Page 38: Rtu−Open Control System

    WARNING efficiency. RTU Open enables the unit to run in 100% stand−alone control mode, Carrier’s I−Vu Open network, or a Third Party Building Automation System (BAS). ELECTRICAL SHOCK HAZARD On−board DIP switches allow you to select your protocol...
  • Page 39 C10818 Fig. 44 − RTU−OPEN Control Module...

  • Page 40: Economi$Er Systems

    ECONOMI$ER SYSTEMS ECONOMIER IV CONTROLLER IMPORTANT: economizer that meets OUTSIDE AIR WIRING TEMPERATURE SENSOR economizer requirements as laid out in California’s Title HARNESS LOW AMBIENT mandatory section 120.2 (fault detection and SENSOR ACTUATOR diagnostics) and/or prescriptive section 140.4 (life−cycle tests, damper leakage, 5 year warranty, sensor accuracy, etc), will have a label on the economizer.
  • Page 41 BLACK TRANSFORMER GROUND BLUE 500 OHM RESISTOR VIOLET NOTE 1 PINK OAT SENSOR 24 VAC NOTE 3 50HJ540573 ACTUATOR ASSEMBLY 4-20 mA WHITE DIRECT DRIVE TO J9 ON 4-20mA SIGNAL ACTUATOR PremierLink BOARD ECONOMISER2 PLUG NOTES: 1. Switch on actuator must be in run position for economizer to operate. 2.
  • Page 42 C06053 Fig. 48 − EconoMi$er IV Functional View EconoMi$er IV Standard Sensors SUPPLY AIR TEMPERATURE Table 9 provides a summary of EconoMi$er IV I/O logic. SENSOR MOUNTING LOCATION A functional view of the EconoMi$er is shown in Fig. 48. Typical settings, sensor ranges, and jumper positions are SUPPLY AIR also shown.
  • Page 43 Outdoor Dry Bulb Changeover The standard controller is shipped from the factory configured for outdoor dry bulb changeover control. The outdoor air and supply air temperature sensors are included as standard. For this control mode, the outdoor temperature is compared to an adjustable setpoint selected on the control.
  • Page 44 (29) (32) (3 ) (3 ) (41) (43) CONTROL CONTROL POINT CURVE APPROX. deg. F (deg. C) AT 50% RH (27) 73 (23) 7 (21) 7 (19) 3 (17) (24) (21) (1 ) (1 ) (13) (1 ) HIGH LIMIT CURVE (1 ) (13)
  • Page 45 To determine the minimum position setting, perform the CO SENSOR MAX RANGE SETTING following procedure: 6000 1. Calculate the appropriate mixed air temperature 5000 using the following formula: 4000 ) + (TR 800 ppm ) =T 900 ppm 3000 1000 ppm = Outdoor-Air Temperature 1100 ppm 2000...
  • Page 46 unoccupied mode is desired, install a field−supplied 1100 ppm curve on Fig. 56 to find the point when the CO timeclock function in place of the jumper between TR and sensor output will be 6.7 volts. Line up the point on the N.
  • Page 47 Single Enthalpy 2. Press Mode twice. The STDSET Menu will appear. 3. Use the Up/Down button to toggle to the NONSTD To check single enthalpy: menu and press Enter. 1. Make sure EconoMi$er IV preparation procedure has 4. Use the Up/Down button to toggle through each of been performed.
  • Page 48 Supply−Air Sensor Input To check supply−air sensor input: 1. Make sure EconoMi$er IV preparation procedure has been performed. 2. Set the Enthalpy potentiometer to A. The Free Cool LED turns on. The actuator should drive to between 20 and 80% open. 3.

  • Page 49: Pre−Start−Up/Start−Up

    PRE−START−UP/START−UP 2. Read and follow instructions on all WARNING, CAUTION, and INFORMATION labels attached to, or shipped with, unit. WARNING 3. Make the following inspections: a. Inspect for shipping and handling damages such PERSONAL INJURY HAZARD as broken lines, loose parts, or disconnected Failure to follow this warning could result in personal wires, etc.

  • Page 50: Start−Up, Premierlink] Controls

    5. The suction pressure should drop, and the discharge During start−up, the Carrier software can also be used to pressure should rise, which is normal for scroll com- verify communication with PremierLink controller.

  • Page 51: Start−Up, Rtu−Open Controls

    NOTE: All set−up and setpoint configurations are factory 3. At the unit, check electrical system and connections of any optional electric reheat coil. set and field−adjustable. 4. Check to be sure the area around the unit is clear of For specific operating instructions, refer to the literature construction dirt and debris.

  • Page 52: Appendix I. Model No. Nomenclature

    APPENDIX I. MODEL NUMBER NOMENCLATURE Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit Heat Type Factory Assigned 50 - Elect. Heat Pkgd Rooftop 0 = Standard Model Series - WeatherMaker™ 3 = CA Seismic Compliant TC - Standard Efficiency Electrical Options ElectricHeat Options...

  • Page 53: Appendix Ii. Physical Data

    APPENDIX II. PHYSICAL DATA Table 12 – PHYSICAL DATA − VERTICAL (COOLING) 15 − 27.5 TONS RTPF (Round Tube/Plate Fin Coil Design) 50TC-D17 50TC-E17 50TC-D20 50TC-E20 Refrigeration System RTPF RTPF RTPF RTPF # Circuits / # Comp. / Type 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll...
  • Page 54 APPENDIX II. PHYSICAL DATA (CONT) − VERTICAL Table 12 - PHYSICAL DATA (cont) (COOLING) 15 - 27.5 TONS RTPF (Round Tube/Plate Fin Coil Design) 50TC-D24 50TC-E24 50TC-D28 50TC-E28 50TC-D30 Refrigeration System RTPF RTPF RTPF RTPF RTPF # Circuits / # Comp. / Type 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll...
  • Page 55 APPENDIX II. PHYSICAL DATA (CONT) − VERTICAL Table 12 - PHYSICAL DATA (cont) (COOLING) 15-27.5 TONS RTPF (Round Tube/Plate Fin Coil Design) 50TC-D17 50TC-E17 50TC-D20 50TC-E20 50TC-D24 50TC-E24 50TC-D28 50TC-E28 50TC-D30 Cond. Coil (Circuit A) Coil type RTPF RTPF RTPF RTPF RTPF RTPF...
  • Page 56 APPENDIX II. PHYSICAL DATA (CONT) − VERTICAL Table 12 - PHYSICAL DATA (cont) (COOLING) 15-27.5 TONS Novation - All Aluminum Coil Design 50TC*17 50TC*20 50TC*24 50TC*28 Refrigeration System MCHX MCHX MCHX MCHX # Circuits / # Comp. / Type 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll...
  • Page 57 APPENDIX II. PHYSICAL DATA (CONT) − VERTICAL Table 12 - PHYSICAL DATA (cont) (COOLING) 15-27.5 TONS Novation - All Aluminum Coil Design 50TC*17 50TC*20 50TC*24 50TC*28 Cond. Coil (Circuit A) Coil type Novation Novation Novation Novation Coil Length (in) Coil Height (in) Number of Passes l Rows / FPI total face area (ft2)
  • Page 58 APPENDIX II. PHYSICAL DATA (CONT) TABLE 13 – PHYSICAL DATA − HORIZONTAL (COOLING) 15−25 TONS RTPF (Round Tube/Plate Fin Coil Design) 50TC-D18 50TC-E18 50TC-D21 50TC-E21 Refrigeration System # Circuits / # Comp. / Type 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll R-410a charge A/B (lbs)
  • Page 59 APPENDIX II. PHYSICAL DATA (CONT) Table 13 PHYSICAL DATA − HORIZONTAL (cont) (COOLING) 15−25 TONS RTPF (Round Tube/Plate Fin Coil Design) 50TC-D25 50TC-E25 50TC-D29 50TC-E29 Refrigeration System # Circuits / # Comp. / Type 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll R-410a charge A/B (lbs)
  • Page 60 APPENDIX II. PHYSICAL DATA (CONT) Table 13 PHYSICAL DATA − HORIZONTAL (cont) (COOLING) 15−25 TONS RTPF (Round Tube/Plate Fin Coil Design) 50TC-D18 50TC-E18 50TC-D21 50TC-E21 50TC-D25 50TC-E25 50TC-D29 50TC-E29 Cond. Coil (Circuit A) Coil type RTPF RTPF RTPF RTPF RTPF RTPF RTPF RTPF...

  • Page 61: Appendix Iii. Fan Performance

    APPENDIX III. FAN PERFORMANCE Table 14 – 50TC*D17 VERTICAL SUPPLY / RETURN 15 TON Available External Static Pressure (in. wg) 4500 0.60 0.90 1.22 1.57 1.94 4900 0.71 1.03 1.37 1.73 2.12 5250 0.83 1.16 1.51 1.89 2.30 5600 0.95 1.30 1.67 2.07...
  • Page 62 APPENDIX III. FAN PERFORMANCE (CONT) Table 16 – 50TC*D24 VERTICAL SUPPLY / RETURN 20 TON Available External Static Pressure (in. wg) 6000 1.12 1.43 1.74 2.07 2.40 6500 1.36 1.70 2.04 2.39 2.74 7000 1.64 2.01 2.37 2.74 3.11 7500 1.96 2.35 2.74...
  • Page 63 APPENDIX III. FAN PERFORMANCE (CONT) Table 18 – 50TC−D30 VERTICAL SUPPLY / RETURN 27.5 TON Available External Static Pressure (in. wg) 8250 1.85 2.31 2.77 3.22 3.68 8800 2.18 2.67 3.16 3.64 4.13 9350 2.54 3.07 3.59 4.10 4.62 9900 2.95 3.51 4.06...
  • Page 64 APPENDIX III. FAN PERFORMANCE (CONT) Table 19 – 50TC*D18 HORIZONTAL SUPPLY / RETURN 15 TON Available External Static Pressure (in. wg) 4500 0.84 1.21 1.63 2.12 2.67 4900 1.01 1.40 1.84 2.34 2.89 5250 1.18 1.60 2.05 2.55 3.11 5600 1.37 1.82 2.28...
  • Page 65 APPENDIX III. FAN PERFORMANCE (CONT) Table 21 – 50TC*D25 HORIZONTAL SUPPLY / RETURN 20 TON Available External Static Pressure (in. wg) 6000 1.57 2.10 2.67 3.29 3.93 6500 1.90 2.46 3.07 3.71 4.39 7000 2.28 2.87 3.51 4.19 4.89 7500 2.71 3.34 4.01...
  • Page 66 APPENDIX III. FAN PERFORMANCE (CONT) Table 23 – Pulley Adjustment − Vertical MOTOR PULLEY TURNS OPEN MOTOR/DRIVE UNIT COMBO Standard Static Medium Static High Static 1009 Standard Static Medium Static High Static 1078 1058 1039 1019 1000 Standard Static Medium Static 1021 1002 High Static...

  • Page 67: Appendix Iv. Wiring Diagrams

    APPENDIX IV. WIRING DIAGRAMS Table 25 – Wiring Diagrams 50TC−D17 / 50TC−D30 UNITS DUAL CIRCUIT HUMIDI-MIZER[ SIZE VOLTAGE CONTROL POWER CONTROL POWER 208/230-3-60 50HE500887-K 50HE500894-I 50HE502180-E 50HE502185-B 460-3-60 50HE500887-K 50HE500895-I 50HE502180-E 50HE502182-C 575-3-60 50HE500887-K 50HE500895-I 50HE502180-E 50HE501774-C 208/230-3-60 50HE500887-K 50HE500894-I 50HE502180-E 50HE502185-B 460-3-60...
  • Page 68 APPENDIX IV. WIRING DIAGRAMS C150425 Fig. 57 − 50TC D17 − D28 Control Diagram − 208/230−3−60; 460/575−3−60...
  • Page 69 APPENDIX IV. WIRING DIAGRAMS C150370 Fig. 58 − 50TC D30 Control Diagram − 208/230−3−60...
  • Page 70 APPENDIX IV. WIRING DIAGRAMS C150368 Fig. 59 − 50TC D30 Control Diagram − 460/575−3−60...
  • Page 71 APPENDIX IV. WIRING DIAGRAMS C150373 Fig. 60 − 50TC D17 − D30 Power Diagram − 208/230−3−60...
  • Page 72 APPENDIX IV. WIRING DIAGRAMS C12399 Fig. 61 − 50TC D17 − D30 Power Diagram 460/575−3−60...
  • Page 73 APPENDIX IV. WIRING DIAGRAMS C150375 Fig. 62 − 50TC D17 − D30 Control Diagram 208/230−3−60; 460/575−3−60 with Humidi−MiZer®...
  • Page 74 APPENDIX IV. WIRING DIAGRAMS C150376 Fig. 63 − 50TC D17 − D30 Power Diagram 208/230−3−60 with Humidi−MiZer®...
  • Page 75 APPENDIX IV. WIRING DIAGRAMS C150378 Fig. 64 − 50TC D17 − D30 Power Diagram 460−3−60 with Humidi−MiZer®...
  • Page 76 APPENDIX IV. WIRING DIAGRAMS C150379 Fig. 65 − 50TC D17 − D30 Power Diagram 575−3−60 with Humidi−MiZer®...
  • Page 77 APPENDIX IV. WIRING DIAGRAMS C12690 Fig. 66 − 50TC − PremierLinkt System Control Wiring Diagram...
  • Page 78 APPENDIX IV. WIRING DIAGRAMS C12691 Fig. 67 − 50TC − RTU−OPEN Wiring Diagram...
  • Page 79 APPENDIX IV. WIRING DIAGRAMS C12689A Fig. 68 − 50TC − SAV − VFD System Control Wiring Diagram...

  • Page 80: Appendix V. Motormaster Sensor Locations

    LOCATION C12259 Fig. 70 − Motormaster Sensor Location − D28 Copyright 2015 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Catalog No: 50TC-17-30-01SM Edition Date: 12/15 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

  • Page 81: Unit Start-Up Checklist

    UNIT START-UP CHECKLIST I. PRELIMINARY INFORMATION: MODEL NO.: SERIAL NO: _____________________________________ DATE: ______________ TECHNICIAN: ___________________________________ II. PRE-START-UP (insert check mark in box as each item is completed): VERIFY THAT JOBSITE VOLTAGE AGREES WITH VOLTAGE LISTED ON RATING PLATE VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT REMOVE ALL SHIPPING HOLD DOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS VERIFY THAT FLUE HOOD IS INSTALLED...
  • Page 82 Copyright 2015 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Catalog No: 50TC-17-30-01SM Edition Date: 12/15 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 50TC-4SM...

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