Carrier 50VL-A Performance Installation Instructions Manual
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Carrier 50VL-A Performance Installation Instructions Manual

Carrier 50VL-A Performance Installation Instructions Manual

14 seer single-packaged air conditioner system with puron (r-410a) refrigerant single and three phase 2 - 5 nominal tons (sizes 24 - 60)
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50VL---A
Performancet 14 SEER Single ---Packaged Air Conditioner
System with Puron® (R ---410A) Refrigerant
Single and Three Phase
2---5 Nominal Tons (Sizes 24---60)
NOTE:
Read the entire instruction manual before starting the
installation.
NOTE:
Installer: Make sure the Owner's Manual and Service
Instructions are left with the unit after installation.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS
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Installation Instructions
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SAFETY CONSIDERATIONS
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Improper installation adjustment, alteration, service, maintenance,
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or use can cause explosion, fire, electrical shock, or other
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conditions which may cause death, personal injury, or property
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damage. Consult a qualified installer, service agency, or your
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distributor or branch for information or assistance. The qualified
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installer or agency must use factory- -authorized kits or accessories
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when modifying this product Refer to the individual instructions
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packaged with the kits or accessories when installing.
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Follow all safety codes. Wear safety glasses, protective clothing,
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and work gloves. Use quenching cloth for brazing operations.
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Have a fire extinguisher available. Read these instructions
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thoroughly and follow all warnings or cautions included in
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literature and attached to the unit. Consult local building codes, the
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current editions of the National Electrical Code (NEC) NFPA 70.
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In Canada refer to the current editions of the Canadian electrical
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Code CSA C22.1.
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Recognize safety information. This is the safety- -alert symbol
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When you see this symbol on the unit and in instructions or
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manuals, be alert to the potential for personal injury. Understand
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these signal words; DANGER, WARNING, and CAUTION. These
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words are used with the safety- -alert symbol. DANGER identifies
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the most serious hazards which will result in severe personal injury
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or death. WARNING signifies hazards which could result in
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personal injury or death. CAUTION is used to identify unsafe
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practices which may result in minor personal injury or product and
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property damage. NOTE is used to highlight suggestions which
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will result in enhanced installation, reliability, or operation.
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Fig. 1 - - Unit 50VL- -A
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A09033
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  • Page 1: Table Of Contents

    50VL---A Performancet 14 SEER Single ---Packaged Air Conditioner System with Puron® (R ---410A) Refrigerant Single and Three Phase 2---5 Nominal Tons (Sizes 24---60) Installation Instructions NOTE: Read the entire instruction manual before starting the installation. NOTE: Installer: Make sure the Owner’s Manual and Service Instructions are left with the unit after installation.

  • Page 2: Introduction

    Step 2 — Provide Unit Support WARNING IMPORTANT: The unit must be secured to the curb by installing screws through the bottom of the curb flange and into the unit base ELECTRICAL SHOCK HAZARD rails. When installing large base units onto the common curb, the Failure to follow this warning could result in personal screws must be installed before allowing the full weight of the unit injury or death.
  • Page 3 A09462 Fig. 2 - - 50VL- -A24- -36 Unit Dimensions...
  • Page 4 A09463 Fig. 3 - - 50VL- -A42- -60 Unit Dimensions...
  • Page 5 Dashed lines show cross support location for large basepan units. HVAC unit HVAC unit basepan base rails Sealing Gasket Roofcurb Anchor screw Wood nailer* Flashing field supplied Roofcurb* Insulation (field supplied) Roofing material field supplied Cant strip field supplied A09413 SMALL/COMMON CURB *Provided with roofcurb A09090...
  • Page 6 CAUTION - NOTICE TO RIGGERS PRUDENCE - AVIS AUX MANIPULATEUR ACCESS PANELS MUST BE IN PLACE WHEN RIGGING. PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION. Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition DUCTS MINIMUM HEIGHT: 36"...

  • Page 7: Provide Clearances

    Step 3 — Provide Clearances attention should be paid to excessive wear at hoist hooking points and load support areas. Materials showing any kind of wear in The required minimum service clearances are shown in Fig. 2 and these areas must not be used and should be discarded. 3.

  • Page 8: Install Duct Connections

    Model 50VL- -A disposes of condensate water through a 3/4 in. (ACCA) minimum installation standards for residential NPT fitting which exits through the base on the evaporator coil heating and air conditioning systems. access side. See Fig. 2 and 3 for location. 5.

  • Page 9: Install Electrical Connections

    7. Flash, weatherproof, and vibration- -isolate all openings in CAUTION building structure in accordance with local codes and good building practices. UNIT COMPONENT DAMAGE HAZARD Failure to follow this caution may result in damage to the unit being installed. 1. Make all electrical connections in accordance with NFPA 70 (NEC) (latest edition) and local electrical codes governing such wiring.

  • Page 10: Special Procedures For 208V Operation

    SPECIAL PROCEDURES FOR 208- - V OPERATION WARNING HIGH VOLTAGE POWER LEADS POWER (SEE UNIT WIRING SUPPLY LABEL) ELECTRICAL SHOCK HAZARD 3-PHASE SHOWN 1-PHASE USES Failure to follow this warning could result in personal TWO POWER injury or death. EQUIP GR LEADS FIELD-SUPPLIED Before installing or servicing system, always turn off main...
  • Page 11 Table 1 – Physical Data- -Unit 50VL- -A UNIT SIZE NOMINAL CAPACITY (ton) 2 ---1/2 3 ---1/2 SHIPPING WEIGHT* lb. SHIPPING WEIGHT* (kg) Scroll COMPRESSORS Quantity REFRIGERANT (R --- 410A) 12.5 Quantity lb Quantity (kg) REFRIGERANT METERING DEVICE OUTDOOR COIL Rows...Fins/in.

  • Page 12: Pre- -Start- -Up

    PRE- -START- - UP 2. Repair leak following accepted practices. NOTE: Install a filter drier whenever the system has been opened WARNING for repair. 3. Add a small charge of Puron (R- -410A) refrigerant vapor to system and leak- -test unit. ENVIRONMENTAL, FIRE, EXPLOSION,...

  • Page 13: Indoor Airflow And Airflow Adjustments

    Proceed as follows: shipped loose with vinyl caps and are located in the control box, near the interface fan board (IFB) (See Fig. 11). 1. Remove caps from low- - and high- -pressure service fittings. SINGLE COOLING FAN SPEED SET- - UP (Dehumidi- 2.

  • Page 14: Continuous Fan Operation

    Table 3 – Color Coding for Indoor Fan Motor Leads HIGH Black = High Speed Orange = Med- -High Speed Red = Med Speed Pink = Med- -Low Speed Blue = Low Speed R13 C8 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death.
  • Page 15 Table 4 – Dry Coil Air Delivery* - - Horizontal and Downflow Discharge - - Unit 50VL- -A24- -60 EXTERNAL STATIC PRESSURE (IN. W.C.) WIRE UNIT MOTOR SPEED COLOR Blue Med-Low Pink 50VL-A24 Medium Med-High Orange 1009 High Black 1241 1167 1111 1036...
  • Page 16 CONNECTION WIRING DIAGRAM DANGER: ELECTRICAL SHOCK HAZARD DISCONNECT POWER BEFORE SERVICING SCHEMATIC IF USED 230-1-60 FIELD SUPPLY POWER UNIT ONLY MAXIMUM WIRE SIZE 2 AWG. COMPRESSOR PLUG EQUIP_GND COMP FOR WIRING WITH ELECTRIC HEATERS SEE SCHEMATIC ON HEATER ACCESSORY. GRN-YEL GRN/YEL TRAN SEE NOTE 5...
  • Page 17 LADDER WIRING DIAGRAM DANGER: ELECTRICAL SHOCK HAZARD DISCONNECT POWER BEFORE SERVICING IF USED COMP TRAN SEE NOTE 24VAC FUSE P1-1 P1-2 P1-3 P1-4 P1-5 P1-6 P1-7 P2-1 P2-2 P2-3 P2-4 C,TRAN ACCESSORY ELECTRIC HEAT P4-1 P4-2 P4-3 P4-4 P4-5 SEE NOTE DEHUM SEE NOTE HIGH...
  • Page 18 A10202 Fig. 13 - - Connection Wiring Diagram 208/230- -3- -60...
  • Page 19 A10202 Fig. 13 Cont. - - Ladder Wiring Diagram 208/230- -3- -60...
  • Page 20 CONNECTION WIRING DIAGRAM DANGER: ELECTRICAL SHOCK HAZARD DISCONNECT POWER BEFORE SERVICING SCHEMATIC IF USED 460-3-60 FOR WIRING WITH FIELD ELECTRIC HEATERS SUPPLY SEE SCHEMATIC POWER ON HEATER UNIT ONLY ACCESSORY. MAXIMUM WIRE SIZE 2 AWG. COMPRESSOR PLUG COMP EQUIP_GND FU1 5 AMP SEE NOTE FU2 5 AMP ECON...
  • Page 21 LADDER WIRING DIAGRAM DANGER: ELECTRICAL SHOCK HAZARD DISCONNECT POWER BEFORE SERVICING IF USED COMP 460V TRAN 460V SEE NOTE 24VAC FUSE P1-1 "R" P1-2 "C" P1-3 "Y1/Y" P1-4 "G" P1-5 "Y2/DH" P1-6 "W2" P1-7 "W3" P2-1 P2-2 P2-3 P2-4 C,TRAN ACCESSORY ELECTRIC HEAT P4-1...
  • Page 22 A09089 Fig. 15 - - Cooling Charging Chart...

  • Page 23: Maintenance

    MAINTENANCE same dimensional size and type as originally installed. See Table 1 for recommended filter sizes. To ensure continuing high performance, and to minimize the Inspect air filter(s) at least once each month and replace possibility of premature equipment failure, periodic maintenance (throwaway- -type) or clean (cleanable- -type) at least twice during must be performed on this equipment.

  • Page 24: Outdoor Coil, Indoor Coil, And Condensate Drain Pan

    FAN GRILLE MOTOR MOTOR SHAFT A08505 MAX DISTANCE BETWEEN TOP OF FAN GRILLE AND BOTTOM OF FAN BLADE “A” SIZE Fig. 16 - - Fan Blade Position air filter(s). If the drain trough is restricted, clear it with a “plumbers snake” or similar probe device. OUTDOOR FAN CAUTION UNIT OPERATION HAZARD...

  • Page 25: Refrigerant Circuit

    each electrical component with proper electrical charge so that pressure gauges read 0 psi (0 Pa). Never open system instrumentation. Refer to the unit wiring label when making these without breaking vacuum with dry nitrogen. checkouts. High- - Pressure Switch NOTE: Refer to the heating and/or cooling sequence of operation The high- -pressure switch is located in the discharge line and in this publication as an aid in determining proper control...

  • Page 26: Troubleshooting

    Liquid Line Filter Drier readily. POE oils can absorb 15 times as much water as other oils designed for HCFC and CFC refrigerants. Take all necessary The filter drier is specifically designed to operate with Puron. Use precautions to avoid exposure of the oil to the atmosphere. only factory- -authorized components.
  • Page 27 Table 8 – Troubleshooting Chart SYMPTOM CAUSE REMEDY Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective contactor, transformer, control relay, or high-- Replace component pressure, loss--of--charge or low--pressure switch Compressor and outdoor fan will not start Insufficient line voltage Determine cause and correct Incorrect or faulty wiring...

  • Page 28: Vertical Economizer

    VERTICAL ECONOMIZER ACCESSORIES (FACTORY INSTALLED OPTION) The economizer has several field- -installed accessories available to optimize performance. Refer to Table 11 for authorized parts. GENERAL Economizers are recommended for only commercial packaged Table 11 – Accessory List products that have X13 motors. The Economizer system utilizes DESCRIPTION PART NUMBER the latest technology available for integrating the use of free...
  • Page 29 6. Replace horizontal return duct cover panel. Screw in place ensuring all seams are air and watertight. 7. Install the 2 angle filter brackets to the right and left hood side panels respectively with the #10 screws provided. See Fig. 21. 8.
  • Page 30 Hood Divider (Removed) Hood Divider Horizontal Return Duct Cover Panel A09691 Fig. 20 - - Horizontal Return Duct Cover Panel Removal Right Hood Left Hood Side Panel Side Panel Filter Angle Bracket Filter Angle Bracket A09692 Fig. 21 - - Filter Angle Bracket Installation...
  • Page 31 Hood Top Panel Right Hood Side Panel Hood Divider Left Hood Side Panel A09693 Fig. 22 - - Economizer Hood Assembly Filter Clips Aluminum Filter A09694 Fig. 23 - - Economizer Hood Installation A09695 Fig. 24 - - Filter Installation (See Through View)

  • Page 32: Large Chassis

    Large Chassis 7. Install the 2 angle filter brackets to the right and left hood side panels respectively with the #10 screws provided. See To install the Vertical Economizer on the large chassis perform the Fig. 28. following procedure: 8. Assemble hood according to Fig. 29 screwing together 1.
  • Page 33 A09698 Fig. 27 - - OAT Bracket Installation Left Hood Side Panel Filter Angle Bracket Right Hood Side Panel Filter Angle Bracket Left Hood Side Right Hood Side A09699 Fig. 28 - - Filter Angle Bracket Installation...
  • Page 34 Right Hood Side Panel Hood Top Panel Left Hood Side Panel Hood Divider A09700 Fig. 29 - - Hood Assembly NOTE: The economizer control settings and the filters are accessible through the filter access door. Table 13 – Filter Part Number DESCRIPTION PART NUMBER 14 x 24 x 1...

  • Page 35: Configuration

    CONFIGURATION Economizer Standard Sensors OUTDOOR AIR TEMPERATURE (OAT) SENSOR— The outdoor air temperature sensor (HH57AC080) is a 10 to 20mA device used to measure the outdoor- -air temperature. The outdoor- -air temperature is used to determine when the Economizer can be used for free cooling.
  • Page 36 TEMPERATURE COMPRESSOR LOCKOUT SWITCH—The Economizer is equipped with a low ambient temperature lockout switch located in the outdoor airstream which is used to lock out the compressors below a 42_F (5.6_C) ambient (8.9°C) temperature. Economizer Control Modes—Determine the Economizer control mode before set up of the control.
  • Page 37 (29) (32) (25) (38) (41) (43) CONTROL CONTROL POINT CURVE APPROX ˚F (˚C) AT 50% RH (27) 73 (23) 70 (21) 24 Vac 67 (19) 63 (17) (24) Open (21) (18) (16) (13) (10) Free Cool A09712 Fig. 39 - - Economizer Controller DIFFERENTIAL ENTHALPY CONTROL —...
  • Page 38 When demand ventilation control is not being used, the minimum 2. Disconnect the supply air sensor from terminals T and T1. position potentiometer should be used to set the occupied ventilation 3. Ensure that the factory- -installed jumper is in place across position.
  • Page 39 A10098 Fig. 40 - - Economizer Wiring Diagram...
  • Page 40 A10201 Fig. 41 - - Connection Wiring Diagram 230- -3...
  • Page 41 A10201 Fig. 41 Cont. - - Ladder Wiring Diagram 230- -3...
  • Page 42 A10203 Fig. 42 - - Connection Wiring Diagram 460- -3...
  • Page 43 A10203 Fig. 42 Cont. - - Ladder Wiring Diagram 460- -3...
  • Page 44 DAMPER MOVEMENT — Damper movement from full open to The DCV set point may be left at 2 volts since the CO sensor voltage will be ignored by the Economizer controller until it rises full closed (or vice versa) takes 2 1/2 minutes. above the 3.6 volt setting of the minimum position potentiometer.

  • Page 45: Operation

    Table 15 – CO Sensor Standard Settings VENTILATION OPTIONAL RELAY RATE CONTROL RELAY ANALOG SETTING EQUIPMENT OUTPUT HYSTERESIS (CFM/ OUTPUT RANGE SETPOINT (PPM) PERSON) (PPM) (PPM) 0--- 10V Proportional 0--- 2000 1000 4--- 20mA Interface w/Standard Building 2--- 10V Proportional 0--- 2000 1000 Control System...

  • Page 46: Troubleshooting

    TROUBLESHOOTING 5. Turn the DCV set point potentiometer CW until the DCV LED turns off. The DCV LED should turn off when the See Table 16 for Economizer logic. An Economizer simulator potentiometer is approximately 9- -v. The actuator should program is available to help with Economizer training and drive fully closed.
  • Page 47 A10070 Fig. 43 - - 50VL- -A 30- -36 3 Phase with Economizer...
  • Page 48 A10071 Fig. 44 - - 50VL- -A 42- -60 3 Phase with Economizer...
  • Page 49 AIR CONDITIONER WITH PURON (R- -410A) QUICK REFERENCE GUIDE Puron refrigerant operates at 50- -70 percent higher pressures than R- -22. Be sure that servicing equipment and replacement components are designed to operate with Puron. Puron refrigerant cylinders are rose colored. S Puron refrigerant cylinders manufactured prior to March 1, 1999, have a dip tube that allows liquid to flow out of cylinder in upright position.
  • Page 50 { Measured at liquid line leaving condenser. Catalog No:50VL---06SI Copyright 2010 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 04/10 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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