Carrier 50FC 08-16 Series Service And Maintenance Instructions
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Carrier 50FC 08-16 Series Service And Maintenance Instructions

Carrier 50FC 08-16 Series Service And Maintenance Instructions

Single package rooftop electric cooling unit with puron (r-410a) refrigerant 7.5 to 15.0 nominal tons
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Service and Maintenance Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 3
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . 4
Supply Fan (Direct-Drive) . . . . . . . . . . . . . . . . . . . . . . 4
Staged Air Volume . . . . . . . . . . . . . . . . . . . . . . . . . . 13
COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Condenser Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . 13
Evaporator Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Evaporator Coil Metering Devices . . . . . . . . . . . . . . 15
TXV Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Replacing TXV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
PURON (R-410A) REFRIGERANT . . . . . . . . . . . . . . . 16
Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . 16
COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Replacing Compressor . . . . . . . . . . . . . . . . . . . . . . . 22
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . 22
Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Condenser-Fan Adjustment . . . . . . . . . . . . . . . . . . . 22
Troubleshooting Cooling System . . . . . . . . . . . . . . 23
CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . . 24
Convenience Outlets . . . . . . . . . . . . . . . . . . . . . . . . 24
Installing Weatherproof Cover . . . . . . . . . . . . . . . . . 24
Non-Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Unit-Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Fuse on Powered Type . . . . . . . . . . . . . . . . . . . . . . . 25
ELECTRIC HEATERS . . . . . . . . . . . . . . . . . . . . . . . . 25
Completing Heater Installation . . . . . . . . . . . . . . . . 26
SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . 27
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Smoke Detector Sensor . . . . . . . . . . . . . . . . . . . . . . 27
Smoke Detector Locations . . . . . . . . . . . . . . . . . . . . 27
Smoke Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500301-01
Single Package Rooftop Electric Cooling Unit
Page
Printed in U.S.A.
Form 50FC-8-16-01SM
with Puron
®
7.5 to 15.0 Nominal Tons
SENSOR AND CONTROLLER TESTS . . . . . . . . . . .31
Sensor Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Controller Alarm Test . . . . . . . . . . . . . . . . . . . . . . . .31
Dirty Controller Test . . . . . . . . . . . . . . . . . . . . . . . . .31
Dirty Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Changing the Dirt Sensor Test . . . . . . . . . . . . . . . . .31
Remote Station Test . . . . . . . . . . . . . . . . . . . . . . . . .32
Dirty Sensor Test Using an SD-TRK4 . . . . . . . . . . .32
Detector Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
PROTECTIVE DEVICES . . . . . . . . . . . . . . . . . . . . . . .33
Compressor Protection . . . . . . . . . . . . . . . . . . . . . . .33
Relief Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Control Circuit, 24-V . . . . . . . . . . . . . . . . . . . . . . . . .34
SYSTEMVU CONTROL SYSTEM . . . . . . . . . . . . . . . .35
SystemVu Interface . . . . . . . . . . . . . . . . . . . . . . . . . .35
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .35
ECONOMIZER SYSTEMS . . . . . . . . . . . . . . . . . . . . .36
EconoMi$er2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Economi$er X (Factory Option) . . . . . . . . . . . . . . . .46
PRE-START-UP/START-UP . . . . . . . . . . . . . . . . . . . .57
START-UP, GENERAL . . . . . . . . . . . . . . . . . . . . . . . .58
Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Additional Installation/Inspection . . . . . . . . . . . . . .58
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Outdoor-Air Inlet Screens . . . . . . . . . . . . . . . . . . . . .58
Compressor Mounting . . . . . . . . . . . . . . . . . . . . . . .58
Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Refrigerant Service Ports . . . . . . . . . . . . . . . . . . . . .58
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . .58
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Ventilation (Continuous Fan) . . . . . . . . . . . . . . . . . .59
FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . .59
START-UP, SYSTEMVU CONTROLS . . . . . . . . . . . .59
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . .60
APPENDIX B - PHYSICAL DATA . . . . . . . . . . . . . . .61
APPENDIX C - FAN PERFORMANCE . . . . . . . . . . .64
APPENDIX D - WIRING DIAGRAMS . . . . . . . . . . . .85
LOCATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . CL-1
Pg 1
50FC**08-16
(R-410A) Refrigerant
11-23
Replaces: NEW

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  • Page 1: Table Of Contents

    50FC**08-16 Single Package Rooftop Electric Cooling Unit with Puron ® (R-410A) Refrigerant 7.5 to 15.0 Nominal Tons Service and Maintenance Instructions CONTENTS SENSOR AND CONTROLLER TESTS ...31 Sensor Alarm Test ......31 Page Controller Alarm Test .

  • Page 2: Safety Considerations

    SAFETY CONSIDERATIONS WARNING Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only FIRE, EXPLOSION HAZARD trained and qualified service personnel should install, repair, or service air-conditioning equipment. Untrained personnel can per- Failure to follow this warning could result in death, serious form the basic maintenance functions of replacing filters.

  • Page 3: Routine Maintenance

    Routine Maintenance These items should be part of a routine maintenance program, to be checked every month or two, until a specific schedule for each can be identified for this installation: QUARTERLY INSPECTION  (AND 30 DAYS AFTER INITIAL START) •...

  • Page 4: Supply Fan (Blower) Section

    To remove the filters: Grasp the bottom flange of the upper panel. Screws Lift up and swing the bottom out until the panel disen- gages and pulls out. Reach inside and extract the filters from the filter rack. Replace these filters as required with similar replacement filters of same size.
  • Page 5 Set the Range Switch to either A, B, or C per the Switch WHITE Serial (R/T) CTL Signal Common Range table. Using a straight blade screwdriver turn the vdc control dial BLACK Power L1 to fine tune the vdc reading. PINK 10 vdc Source ORANGE...
  • Page 6 ESP in. wg Factory Setting: Calculator 9.0 V 1500 Field Setting: 1625 Record field setting here 1750 1875 2000 Switch Range: 2125 10.0 2250 4.1 - 7.5 2375 6.9 - 8.7 2500 7.7 - 10.0 Field Accessories: Economizer * Overlap in A, B, C switch range 1 Stage E Heat designed for maximum field adjustment potential.
  • Page 7 Units with SystemVu™ controls Use the DOWN arrow key highlight the UNIT CONFIG- URATIONS menu then press ENTER. On units equipped with the factory-installed SystemVu con- Highlight UNIT CONFIGURATIONS then press ENTER. troller the Fan Speed settings are accessed through the SystemVu interface.
  • Page 8 TROUBLESHOOTING THE ECM MOTOR EcoBlue™ motors are designed with several built-in protections included in the motor software. If the motor detects a fault it will safely shut down. See Table 5, “Supply Fan Motor Logic and Safety Relays” on page 34 for a complete list. Troubleshooting the motor requires a voltmeter.
  • Page 9 Removing the Motor and Fan Assembly NOTE: Due to press fit design of composite Rotor on Motor, it is highly recommended that any time a motor is replaced the fan rotor is replaced as well. The rest of the assembly may be reused. See Fig.
  • Page 10 Disassembling Standard/Medium Motor and Fan Assembly Disassembling High Static Motor and Fan Assembly See Fig. 14. See Fig. 15. NOTE: Refer to “Model Number Nomenclature” on page 60, NOTE: Refer to “Model Number Nomenclature” on page 60, position 10 for specific unit requirements. position 10 for specific unit requirements.
  • Page 11 Reassembly of Standard/Medium Motor and Fan Assembly Reassembly of High Static Motor and Fan Assembly See Fig. 16. See Fig. 17. NOTE: Refer to “Model Number Nomenclature” on page 60, NOTE: Refer to “Model Number Nomenclature” on page 60, position 10 for specific unit requirements. position 10 for specific unit requirements.
  • Page 12 Reinstalling Motor and Fan Assembly See Fig. 18. Align motor harness/grommet at ~7 o’clock (facing installer) and align the bottom flats on right and left sides of fan stator with fan deck ribs. Drop fan assembly down into fan deck opening and slide back until aluminum stator is under the rear fan deck brackets.

  • Page 13: Staged Air Volume

    PERIODIC CLEAN WATER RINSE Staged Air Volume All 50FC units with EcoBlue™ technology come factory set to A periodic clean water rinse is very beneficial for coils that are ap- automatically adjust the indoor fan motor speed in sequence with plied in coastal or industrial environments.
  • Page 14 Top Panel Support (Field- Supplied) Center Baffle Fig. 20 — Propping Up Top Panel Remove the compressor access panel to access the lower coil clip. The condenser coil corner post may also be removed. Fig. 22 — Separating Coil Sections Remove the screws from both sides of the 4 coil retaining (Top View) clips on the hairpin end of the coil tube sheets.

  • Page 15: Evaporator Coil

    Thoroughly apply Totaline environmentally balanced coil The pin is spring loaded, which exerts pressure on the under- cleaner solution to all coil surfaces including finned area, side of the diaphragm. Therefore, the bulb pressure works tube sheets and coil headers. against the spring pressure and evaporator suction pressure to Hold garden sprayer nozzle close to finned areas and apply open the valve.

  • Page 16: Puron (R-410A) Refrigerant

    I N S U L A T I O N C O V E R R E M O V E D fer to Carrier GTAC2-5 Charging, Recovery, Recycling and Rec- S U C T I O N L I N E lamation training manual and the following procedures.
  • Page 17 COOLING CHARGING CHARTS 7.5 Ton Entry Tier R-410A Charging Chart (Unit must have both compressors and outdoor fans on high speed) 59.9 Add Charge if Above Curve 48.8 37.7 26.6 Remove Charge if Below the Curve 15.5 -6.7 1034 1379 1723 2068 2413...
  • Page 18 COOLING CHARGING CHARTS 8.5 Ton Entry Tier R-410A Charging Chart (Unit must have both compressors and outdoor fans on high speed) 59.9 Add Charge if Above Curve 48.8 37.7 26.6 Remove Charge if Below the Curve 15.5 -6.7 1034 1379 1723 2068 2413...
  • Page 19 COOLING CHARGING CHARTS 10 Ton Entry Tier R-410A Charging Chart (Unit must have both compressors and outdoor fans on high speed) 59.9 Add Charge if Above Curve 48.8 37.7 26.6 Remove Charge if Below the Curve 15.5 -6.7 1034 1379 1723 2068 2413...
  • Page 20 COOLING CHARGING CHARTS 12.5 Ton Entry Tier R-410A Charging Chart (Unit must have both compressors and outdoor fans on high speed) 59.9 Add Charge if Above Curve 48.8 37.7 26.6 Remove Charge if Below the Curve 15.5 -6.7 1034 1379 1723 2068 2413...
  • Page 21 COOLING CHARGING CHARTS 15 Ton 48/50 FC / 582/559 / RGV/RAV (Unit must run in Subcooling mode) 59.9 Add Charge if Above Curve 48.8 37.7 26.6 Remove Charge if Below the Curve 15.5 -6.7 1034 1379 1723 2068 2413 2758 3102 3447 3792...

  • Page 22: Compressor

    COMPRESSOR Compressor Rotation Lubrication CAUTION The compressor is charged with the correct amount of oil at the factory. EQUIPMENT DAMAGE HAZARD Failure to follow this caution can result in premature wear and damage to equipment. CAUTION Scroll compressors can only compress refrigerant if rotating in UNIT DAMAGE HAZARD the right direction.

  • Page 23: Troubleshooting Cooling System

    Troubleshooting Cooling System Refer to Table 2 for additional troubleshooting topics. Table 2 — Troubleshooting SYMPTOM CAUSE SOLUTION Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Determine root cause. Defective thermostat, contactor, transformer. Replacement component.

  • Page 24: Convenience Outlets

    Press the gasket over the screw heads. Slip the backing CONVENIENCE OUTLETS plate over the screw heads at the keyhole slots and align with the gasket; tighten the two screws until snug (do not WARNING over-tighten). Mount the weatherproof cover to the backing plate as ELECTRICAL OPERATION HAZARD shown in Fig.

  • Page 25: Duty Cycle

    electric heaters are one module containing either one or two banks of electric heat coils. Heater modules are installed in the compartment below the indoor (supply) fan outlet. Access is through the indoor blower access panel. Heater modules slide into the compartment on tracks along the bottom of the heater opening.

  • Page 26: Completing Heater Installation

    SINGLE POINT BOXES AND SUPPLEMENTARY FUSES When the unit MOCP device value exceeds 60A, unit-mounted supplementary fuses are required for each heater circuit. These Stator Manual fuses are included in accessory single point boxes, with power Reset Limit distribution and fuse blocks. The single point box will be Switch installed directly under the unit control box, just to the left of the partition separating the indoor section (with electric heat-...

  • Page 27: Smoke Detectors

    SMOKE DETECTORS Duct Smoke Sensor Smoke detectors are available as factory-installed options on 50FC models. Smoke detectors may be specified for supply air only, for return air without or with economizer, or in combination of supply air and return air. Return air smoke detectors are ar- ranged for vertical return configurations only.
  • Page 28 Supply Air Smoke Detector Return Air Smoke Detector (As Shipped) Fig. 42 — Typical Supply Air Smoke Detector Sensor Fig. 44 — Typical Return Air Smoke Detector Location Location (size 16 units) RETURN AIR SMOKE DETECTOR SENSOR WITHOUT RETURN AIR SMOKE DETECTOR SENSOR WITH ECONOMIZER ECONOMIZER The sampling tube is located across the return air opening on the...

  • Page 29: Completing Installation Of Return Air

    Completing Installation of Return Air  Rotate the detector plate so the sensor is facing outwards and the sampling tube connection is on the bottom. See Fig. 47. Smoke Detector Screw the sensor and detector plate into its operating position Use the following steps to complete the installation of the return using screws from Step 1.

  • Page 30: Fiop Smoke Detector Wiring And Response

    HIGHLIGHT B FIOP Smoke Detector Wiring and Response 24-v power signal using the ORN lead is removed at the smoke ALL UNITS detector input on UCB; all unit operations cease immediately. The FIOP smoke detector is configured to automatically shut ADDITIONAL APPLICATION DATA down all unit operations when a smoke condition is detected.

  • Page 31: Sensor And Controller Tests

    SENSOR AND CONTROLLER TESTS Dirty Sensor Test The dirty sensor test provides an indication of the sensor’s ability Sensor Alarm Test to compensate for gradual environmental changes. A sensor that The sensor alarm test checks a sensor’s ability to signal an can no longer compensate for environmental changes is consid- alarm state.

  • Page 32: Remote Station Test

    Remote Station Test IMPORTANT: Failure to follow this ALERT can result in The remote station alarm test checks a test/reset station’s ability to an unnecessary evacuation of the facility. initiate and indicate an alarm state. Holding the test magnet to the target area for longer than seven seconds will put the detector into the alarm state and activate IMPORTANT: Failure to follow this ALERT can result in an all automatic alarm responses.

  • Page 33: Troubleshooting

    ALARM STATE trouble condition. Check each sensor for Alarm or Trouble status (indicated by LED). Clear the condition that has generated the trip The smoke detector enters the alarm state when the amount of at this sensor. Then reset the sensor by pressing and holding the re- smoke particulate in the sensor’s sensing chamber exceeds the set button (on the side) for 2 seconds.

  • Page 34: Relief Device

    MIXED TEMPERATURE SENSOR HIGH PRESSURE SWITCH The Mixed Temperature Sensor (MTS) is installed on the return The system is provided with a high pressure switch mounted on side of the unit filter bracket. See Fig. 52. the discharge line. The switch is stem-mounted and brazed into the discharge tube.

  • Page 35: Systemvu Control System

    Through the SystemVu interface, the user can access all of the The SystemVu control system is fully communicating and cable- inputs and outputs to check on their values and status, configure ready for connection to the Carrier Comfort Network (CCN), ®...

  • Page 36: Economizer Systems

    ECONOMIZER SYSTEMS Outside Air The unit may be equipped with a factory-installed or accessory Temperature Sensor (field-installed) economizer system. Three types are available: Low Ambient two with logic control systems (EconoMi$er X and EconoMi$er ® EconoMi$er IV Sensor IV) and one without a control system (EconoMi$er2). Controller (W7212) See Fig.

  • Page 37: Economi$Er Iv (Field-Installed Accessory)

    EconoMi$er IV (Field-Installed Accessory) IMPORTANT: For FC rooftop units EconoMi$er IV is available as a field-installed option for 08-16 units only. ECONOMI$ER IV STANDARD SENSORS Troubleshooting instructions are enclosed. A functional view of the EconoMi$er ® IV accessory is shown in Fig. 58. Typical set- tings, sensor ranges, and jumper positions are also shown.
  • Page 38 Table 6 — EconoMi$er IV Input/Output Logic INPUTS OUTPUTS Demand Enthalpy Compressor N Terminal Controlled Ventilation Outdoor Return Stage 1 Stage 2 Occupied Unoccupied (DCV) High (Free Cooling Minimum position Closed LED Off) Below set (DCV LED Off) Modulating (between Modulating (between min.
  • Page 39 Outdoor Air Lockout Sensor DIP Switch Changeover The EconoMi$er IV is equipped with an ambient temperature lockout switch located in the outdoor airstream which is used to Position Temperature lock out the compressors below a 42°F (6°C) ambient tempera- ture. See Fig. 55 on page 36. 48°F 1 2 3 Table 7 —...
  • Page 40 7.5 and 8.5 Ton Units 10 and 12.5 Ton Units Pressure Drop for Electric Heat, 10 to 12.5 Ton Units Pressure Drop for Electric Heat, 7.5 to 8.5 Ton Units 0.25 0.12 0.10 0.20 0.08 0.15 0.06 0.10 0.04 0.05 0.02 0.00 0.00...
  • Page 41 Horizontal Economizer Barometric Relief Vertical Economizer Barometric Relief Vertical Economizer Barometric Relief Flow Horizontal Economizer Barometric Relief Flow 2500 2500 2000 2000 1500 1500 1000 1000 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.00 0.05 0.10 0.15 0.20 0.25 0.30 Return Duct Static Pressure (in.
  • Page 42 EconoMi$er IV (29) (32) (35) (38) (41) (43) Controller CONTROL POINT CONTROL APPROX. °F (°C) CURVE EconoMi$er IV AT 50% RH (27) 73 (23) 70 (21) 67 (19) 63 (17) (24) (21) Grommet (18) (16) (13) Return Air Sensor (10) Return Duct (Field-Provided) Fig.
  • Page 43 Exhaust Set Point Adjustment Damper Movement The exhaust set point will determine when the exhaust fan runs Damper movement from full open to full closed (or vice versa) based on damper position (if accessory power exhaust is in- takes 2-1/2 minutes. stalled).
  • Page 44 IV preparation procedure has lected anytime after the sensor is powered up. been performed. Use setting 1 or 2 for Carrier equipment. Place 620-ohm resistor across SO and +. Press Clear and Mode buttons. Hold at least 5 seconds Place 1.2 kilo-ohm resistor across SR and +. The Free until the sensor enters the Edit mode.
  • Page 45 DCV MINIMUM AND MAXIMUM POSITION Remove the 5.6 kilo-ohm resistor and jumper T to T1. The actuator should drive fully open. To check the DCV minimum and maximum position: Remove the jumper across T and T1. The actuator should Make sure EconoMi$er IV preparation procedure has been drive fully closed.

  • Page 46: Economi$Er X (Factory Option)

    Mixed Air sensor, and an Outdoor Dry Bulb sensor. Enthalpy and Economi$er X (Factory Option) other options are available with bus sensors. The EconoMi$er X system is an expandable economizer control ® User Interface system, which includes a W7220 economizer module (controller) with an LCD and keypad (see Fig.
  • Page 47 ENVIRONMENTAL Relative Humidity 5% to 95% RH non-condensing Operating Temperature –40 to 150°F (–40 to 65°C). ECONOMIZER MODULE WIRING DETAILS Exception of display operation down to –4°F (–20°C) with full Use Fig. 73 and Tables 8 and 9 to locate the wiring terminals for recovery at –4°F (–20°C) from exposure to –40°F (–40°C).
  • Page 48 Table 9 — Economizer Module — Right Hand Terminal Blocks LABEL TYPE DESCRIPTION Top Right Terminal Blocks AUX2 I 24 vac IN The first terminal is not used. Shut Down (SD) or HEAT (W) AUX2- Conventional only 24 vac IN Heat Pump Changeover (O-B) in Heat Pump mode.
  • Page 49 User Interface Table 10 — HH57AC081 Sensor Wiring Terminations The user interface consists of a 2-line LCD display and a 4-button keypad on the front of the economizer controller. TERMINAL TYPE DESCRIPTION Keypad NUMBER LABEL Use the four navigation buttons (see Fig. 76) to scroll through the S-BUS Communications menus and menu items, select menu items, and to change parame-...
  • Page 50 Menu Structure Setup and Configuration Table 12 illustrates the complete hierarchy of menus and parame- Before being placed into service, the W7220 Economizer module ters for the EconoMi$er X system. must be set up and configured for the installed system. ®...
  • Page 51 Table 12 — W7220 Menu Structure a,b,c,d,e PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT SPACE/RETURN AIR CO IN CO2 _ _ _ ppm 0 to 2000 ppm Displays value of measured CO from CO sensor.
  • Page 52 Table 12 — W7220 Menu Structure a,b,c,d,e PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT DCV MINIMUM DAMPER POSITION AT LOW SPEED. Only displays if unit is set for 2 speed or 3 speed with 1 heat and 2 cool. IF using 2 speed with 1 VENTMIN L 3.7 V 2 to 10 vdc...
  • Page 53 Table 12 — W7220 Menu Structure a,b,c,d,e PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT 35 to 55°F; SUPPLY AIR TEMPERATURE LOW LIMIT MA LO SET 45°F Incremented by Temperature to achieve Freeze Protection (close damper and alarm if temperature falls below setup value).
  • Page 54 Table 12 — W7220 Menu Structure a,b,c,d,e PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT SENSOR ERROR CO2 SENS ERR sensor has failed, gone out of range or become disconnected - check wiring then replace sensor if the alarm continues. OA SYLK T ERR OUTSIDE AIR S-BUS SENSOR ERROR Outdoor air enthalpy sensor has failed or become disconnected - check...
  • Page 55 Enthalpy Settings Table 13 — Fan Speed When the OA temperature, enthalpy and dew point are below the respective setpoints, the Outdoor Air can be used for economiz- STATE FAN SPEED ing. Figure 77 shows the new single enthalpy boundaries in the W7220.
  • Page 56 Table 15 — Economizer Operation - FAN TYPE = 2SPEED INPUTS OUTPUTS DEMAND OUTSIDE AIR DAMPER POSITION COOL COOL COOL COOL FAN SPEED CONTROLLED GOOD TO (HEAT ON) Y1-IN Y2-IN Y1-OUT Y2-OUT (reference only) OCCUPIED UNOCCUPIED VENTILATION (DCV) ECONOMIZE HIGH MIN POS H Closed MIN POS L...

  • Page 57: Pre-Start-Up/Start-Up

    Checkout Tests PRE-START-UP/START-UP Use the Checkout menu (see page 53) to test the damper operation and any configured outputs. Only items that are configured are WARNING shown in the Checkout menu. NOTE: For information about menu navigation and use of the PERSONAL INJURY HAZARD keypad see Interface Overview on page 49.

  • Page 58: Start-Up, General

    Proceed as follows to inspect and prepare the unit for initial Compressor Mounting start-up: Compressors are internally spring mounted. Do not loosen or re- Remove all access panels. move compressor hold down bolts. Read and follow instructions on all WARNING, Internal Wiring CAUTION, and INFORMATION labels attached to, or Check all electrical connections in unit control boxes.

  • Page 59: Heating

    Heating FASTENER TORQUE VALUES To start unit, turn on main power supply. Set system selector switch to the HEAT position and set thermostat at a setting above Table 16 — Torque Values room temperature. Set fan to AUTO position. Stator Motor Mounting First stage of thermostat energizes the first stage of the electric 50 in.-lb (5.7 Nm) + 5 in.-lb (0.6 Nm) Screws...

  • Page 60: Appendix A - Model Number Nomenclature

    APPENDIX A — MODEL NUMBER NOMENCLATURE Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit Heat Type Packaging & Seismic Compliance 50 – Cooling with Optional Electric Heat 0 = Standard Packaged Rooftop 1 = LTL ®...

  • Page 61: Appendix B - Physical Data

    APPENDIX B — PHYSICAL DATA 50FC 7.5 to 8.5 Ton Physical Data 50FC UNIT 50FC*M08 50FC*N08 50FC*M09 50FC*N09 NOMINAL TONS BASE UNIT OPERATING WT (lb) 50FC REFRIGERATION SYSTEM Number Circuits / Number Compressors / Type 1 / 2 / Scroll 1 / 2 / Scroll 1 / 2 / Scroll 1 / 2 / Scroll...
  • Page 62 APPENDIX B — PHYSICAL DATA (cont) 50FC 10 to 12.5 Ton Physical Data 50FC UNIT 50FC*M12 50FC*N12 50FC*M14 50FC* N14 12.5 12.5 NOMINAL TONS BASE UNIT OPERATING WT (lb) 50FC REFRIGERATION SYSTEM Number Circuits / Number Compressors / Type 1 / 2 / Scroll 1 / 2 / Scroll 1 / 2 / Scroll 1 / 2 / Scroll...
  • Page 63 APPENDIX B — PHYSICAL DATA (cont) 50FC 15 Ton Physical Data 50FC UNIT 50FC*M16 50FC*N16 NOMINAL TONS 1325 1325 BASE UNIT OPERATING WT (lb) 50FC REFRIGERATION SYSTEM Number Circuits / Number Compressors / Type 1 / 2 / Scroll 1 / 2 / Scroll Puron ®...

  • Page 64: Appendix C - Fan Performance

    APPENDIX C — FAN PERFORMANCE The Fan Performance tables offer motor/drive recommenda- GENERAL FAN PERFORMANCE NOTES tions. In cases when two motor/drive combinations would Interpolation is permissible. Do not extrapolate. work, the lower horsepower option is recommended. External static pressure is the static pressure difference The EPACT (Energy Policy Act of 1992) regulates energy between the return duct and the supply duct plus the static requirements for specific types of indoor fan motors.
  • Page 65 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M08 — 7.5 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 0.34 1102 0.50 1216 0.68 1319 0.86 1414 1.07 2250 1031 0.41 1157 0.58 1267 0.76 1367 0.96 1459 1.17 2440 1092...
  • Page 66 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M08 – High Static — 7.5 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1102 1216 1319 1414 2250 1031 1157 1267 1367 1459 2440 1092 1213 1320 1416 1506 2625 1155 1271...
  • Page 67 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M09 — 8.5 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1015 0.39 1128 0.53 1233 0.69 1330 0.87 1421 1.06 2550 1084 0.47 1190 0.62 1289 0.78 1382 0.96 1470 1.16 2760...
  • Page 68 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M09 – High Static — 8.5 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1015 1128 1233 1330 1421 2550 1084 1190 1289 1382 1470 2760 1154 1253 1348 1437 1521 2975 1225...
  • Page 69 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M12 — 10 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1181 0.60 1279 0.77 1372 0.95 1461 1.14 1544 1.35 3000 1264 0.73 1356 0.91 1443 1.09 1527 1.29 1607 1.51 3250...
  • Page 70 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M12 – High Static — 10 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1181 1279 1372 1461 1544 3000 1264 1356 1443 1527 1607 3250 1348 1434 1517 1596 1673 3500 1433...
  • Page 71 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M14 — 12.5 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1178 0.86 1287 1.12 1386 1.40 1475 1.69 1558 1.99 3750 1260 1.05 1362 1.32 1456 1.62 1543 1.92 1623 2.24 4060...
  • Page 72 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M14 – High Static — 12.5 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1178 1287 1386 1475 1558 3750 1260 1362 1456 1543 1623 4060 1343 1438 1528 1612 1690 4375 1426...
  • Page 73 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M16 — 15 Ton Vertical Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1120 0.73 1201 0.90 1281 1.10 1361 1.32 1441 1.56 4500 1208 0.92 1283 1.10 1357 1.30 1431 1.52 1505 1.77 4875...
  • Page 74 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M16 – High Static — 15 Ton Vertical Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1120 1201 1281 1361 1441 4500 1208 1283 1357 1431 1505 4875 1297 1367 1436 1504 1573 5250 1387...
  • Page 75 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M08 — 7.5 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 0.28 1046 0.43 1167 0.60 1276 0.78 1376 0.98 2250 0.34 1095 0.49 1211 0.67 1316 0.86 1414 1.06 2440 1023 0.40...
  • Page 76 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M08 – High Static — 7.5 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1046 1167 1276 1376 2250 1095 1211 1316 1414 2440 1023 1145 1256 1359 1453 2625 1081 1197 1304...
  • Page 77 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M09 — 8.5 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 0.31 1065 0.45 1178 0.60 1284 0.78 1382 0.97 2550 1010 0.38 1120 0.51 1226 0.67 1327 0.85 1422 1.05 2760 1074...
  • Page 78 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M09 – High Static — 8.5 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1065 1178 1284 1382 2550 1010 1120 1226 1327 1422 2760 1074 1177 1277 1373 1464 2975 1139 1235...
  • Page 79 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M12 — 10 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1100 0.49 1202 0.64 1301 0.81 1396 1.00 1487 1.21 3000 1176 0.59 1270 0.74 1363 0.92 1453 1.11 1539 1.32 3250...
  • Page 80 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M12 – High Static — 10 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1100 1202 1301 1396 1487 3000 1176 1270 1363 1453 1539 3250 1252 1341 1428 1512 1595 3500 1330...
  • Page 81 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M14 — 12.5 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1072 0.65 1166 0.83 1266 1.07 1363 1.33 1454 1.62 3750 1148 0.79 1233 0.98 1324 1.22 1416 1.49 1504 1.78 4060...
  • Page 82 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M14 – High Static — 12.5 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1072 1166 1266 1363 1454 3750 1148 1233 1324 1416 1504 4060 1226 1303 1386 1472 1556 4375 1304...
  • Page 83 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M16 — 15 Ton Horizontal Supply (rpm - bhp) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1117 0.73 1198 0.90 1278 1.09 1358 1.31 1438 1.55 4500 1205 0.91 1279 1.09 1353 1.29 1427 1.51 1501 1.76 4875...
  • Page 84 APPENDIX C — FAN PERFORMANCE (cont) 50FC*M16 – High Static — 15 Ton Horizontal Supply (rpm - vdc) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1117 1198 1278 1358 1438 4500 1205 1279 1353 1427 1501 4875 1294 1363 1432 1500 1569 5250 1383...

  • Page 85: Appendix D - Wiring Diagrams

    APPENDIX D — WIRING DIAGRAMS 50FC**08-16 — Wiring Diagrams — Standard/Medium SCCR SIZE VOLTAGE CONTROL PAGE POWER PAGE 208/230-3-60 50FC**08-12 48TM005717 Electro-Mechanical 460-3-60 48TM005715 W7220 Controller 575-3-60 48TM005994 208/230-3-60 48TM005988 50FC**14 Electro-Mechanical 460-3-60 48TM005985 48TM005987 W7220 Controller 575-3-60 208/230-3-60 50FC**16 50TM001913 Electro-Mechanical 460-3-60...
  • Page 86 APPENDIX D — WIRING DIAGRAMS (cont) Fig. B — 50FC**08-12 Control Wiring Diagram — 208/230, 460, 575-3-60 Unit Electro-Mechanical with W7220 Control — Standard/Medium and High SCCR...
  • Page 87 APPENDIX D — WIRING DIAGRAMS (cont) Fig. C — 50FC**14 Control Wiring Diagram — 208/230, 460, 575-3-60 Unit Electro-Mechanical with W7220 Control — Standard/Medium and High SCCR...
  • Page 88 APPENDIX D — WIRING DIAGRAMS (cont) Fig. D — 50FC**16 Control Wiring Diagram — 208/230, 460, 575-3-60 Unit Electro-Mechanical with W7220 Control — Standard/Medium and High SCCR...
  • Page 89 APPENDIX D — WIRING DIAGRAMS (cont) Fig. E — 50FC**08-12 Control Wiring Diagram — 208/230, 460, 575-3-60 Unit with SystemVu™ Control — Standard/Medium and High SCCR...
  • Page 90 APPENDIX D — WIRING DIAGRAMS (cont) Fig. F — 50FC**14 Control Wiring Diagram — 208/230, 460, 575-3-60 Unit with SystemVu™ Control — Standard/Medium and High SCCR...
  • Page 91 APPENDIX D — WIRING DIAGRAMS (cont) Fig. G — 50FC**16 Control Wiring Diagram — 208/230, 460, 575-3-60 Unit with SystemVu™ Control — Standard/Medium and High SCCR...
  • Page 92 APPENDIX D — WIRING DIAGRAMS (cont) Fig. H — 50FC**08-12 Power Wiring Diagram — 208/230, 460-3-60 Unit Electro-Mechanical with W7220 Control — Standard/Medium SCCR...
  • Page 93 APPENDIX D — WIRING DIAGRAMS (cont) Fig. I — 50FC**08-12 Power Wiring Diagram — 575-3-60 Unit Electro-Mechanical with W7220 Control — Standard/Medium SCCR...
  • Page 94 APPENDIX D — WIRING DIAGRAMS (cont) Fig. J — 50FC**14 Power Wiring Diagram — 208/230-3-60 Unit Electro-Mechanical with W7220 Control — Standard/Medium SCCR...
  • Page 95 APPENDIX D — WIRING DIAGRAMS (cont) Fig. K — 50FC**14 Power Wiring Diagram — 460, 575-3-60 Unit Electro-Mechanical with W7220 Control — Standard/Medium SCCR...
  • Page 96 APPENDIX D — WIRING DIAGRAMS (cont) Fig. L — 50FC**16 Power Wiring Diagram — 208/230, 460-3-60 Unit Electro-Mechanical with W7220 Control — Standard/Medium SCCR...
  • Page 97 APPENDIX D — WIRING DIAGRAMS (cont) Fig. M — 50FC**16 Power Wiring Diagram — 575-3-60 Unit Electro-Mechanical with W7220 Control — Standard/Medium SCCR...
  • Page 98 APPENDIX D — WIRING DIAGRAMS (cont) Fig. N — 50FC**08-12 Power Wiring Diagram — 208/230, 460-3-60 Unit with SystemVu™ Control — Standard/Medium SCCR...
  • Page 99 APPENDIX D — WIRING DIAGRAMS (cont) Fig. O — 50FC**08-12 Power Wiring Diagram — 575-3-60 Unit with SystemVu™ Control — Standard/Medium SCCR...
  • Page 100 APPENDIX D — WIRING DIAGRAMS (cont) Fig. P — 50FC**16 Power Wiring Diagram — 208/230, 460-3-60 Unit with SystemVu™ Control — Standard/Medium SCCR...
  • Page 101 APPENDIX D — WIRING DIAGRAMS (cont) Fig. Q — 50FC**16 Power Wiring Diagram — 575-3-60 Unit with SystemVu™ Control — Standard/Medium SCCR...
  • Page 102 APPENDIX D — WIRING DIAGRAMS (cont) Fig. R — 50FC**08-12 Control Wiring Diagram — 208/230, 460-3-60 Unit Electro-Mechanical with W7220 Control — High SCCR...
  • Page 103 APPENDIX D — WIRING DIAGRAMS (cont) Fig. S — 50FC**14 Control Wiring Diagram — 208/230-3-60 Unit Electro-Mechanical with W7220 Control — High SCCR...
  • Page 104 APPENDIX D — WIRING DIAGRAMS (cont) Fig. T — 50FC**14 Control Wiring Diagram — 460-3-60 Unit Electro-Mechanical with W7220 Control — High SCCR...
  • Page 105 APPENDIX D — WIRING DIAGRAMS (cont) Fig. U — 50FC**16 Control Wiring Diagram — 208/230, 460-3-60 Unit Electro-Mechanical with W7220 Control — High SCCR...
  • Page 106 APPENDIX D — WIRING DIAGRAMS (cont) Fig. V — 50FC**08-12 Power Wiring Diagram — 208/230, 460-3-60 Unit with SystemVu™ Control — High SCCR...
  • Page 107 APPENDIX D — WIRING DIAGRAMS (cont) Fig. W — 50FC**16 Power Wiring Diagram — 208/230, 460-3-60 Unit with SystemVu™ Control — High SCCR...

  • Page 108: Appendix E - Low Ambient Control Sensor Location

    APPENDIX E — LOW AMBIENT CONTROL SENSOR LOCATION T O P O F C O I L T O P O F C O I L S E N S O R P O S I T I O N 4 T H I N T E R M E D I A T E S E N S O R P O S I T I O N F R O M T O P...
  • Page 110 © 2023 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500301-01 Printed in U.S.A. Form 50FC-8-16-01SM Pg 110 11-23 Replaces: NEW...

  • Page 111: Start-Up Checklist

    START-UP CHECKLIST 50FC**08-16 Single Package Rooftop Electric Cooling Units (Remove and use for 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 judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sec- tions of this Service and Maintenance document.
  • Page 112 (Y/N) _____ 10. Restore setpoints for thermostat and humidistat (Y/N) _____ © 2023 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500301-01 Printed in U.S.A.

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