Carrier 50VL---A Introduction, Receiving and Installation, Check Equipment, Provide Unit Support

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50VL-- A

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before installing or servicing system, always turn off main power to system and install lockout tag. There may be more than one disconnect switch. Turn off accessory heater power switch if applicable.

!WARNING

PERSONAL INJURY AND ENVIRONMENTAL HAZARD

Failure to relieve system pressure could result in personal injury and/or death.

1.Relieve pressure and recover all refrigerant before servicing existing equipment, and before final unit disposal. Use all service ports and open all flow-control devices, including solenoid valves.

2.Federal regulations require that you do not vent refrigerant into the atmosphere. Recover during system repair or final unit disposal.

!CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

When removing access panels (see Fig. 17) or performing maintenance functions inside your unit, be aware of sharp sheet metal parts and screws. Although special care is taken to reduce sharp edges to a minimum, be extremely careful when handling parts or reaching into the unit.

INTRODUCTION

The 50VL-A packaged air conditioner is fully self-contained and designed for outdoor installation (See Fig.1 ). See Fig. 2 and 3 for unit dimensions. All unit sizes have discharge openings for both horizontal and downflow configurations, and are factory shipped with all downflow duct openings covered. The unit may be installed either on a rooftop or on a ground-level cement slab. (See Fig. 4 for roof curb dimensions.)

RECEIVING AND INSTALLATION

Step 1 — Check Equipment

IDENTIFY UNIT

The unit model number and serial number are printed on the unit informative plate. Check this information against shipping papers.

INSPECT SHIPMENT

Inspect for shipping damage before removing packaging materials. If unit appears to be damaged or is torn loose from its anchorage, have it examined by transportation inspectors before removal. Forward claim papers directly to transportation company. Manufacturer is not responsible for any damage incurred in transit. Check all items against shipping list. Immediately notify the nearest equipment distribution office if any item is missing. To prevent loss or damage, leave all parts in original packages until installation.

If the unit is to be mounted on a curb in a downflow application, review Step 7 to determine which method is to be used to remove the downflow panels before rigging and lifting into place. The panel removal process may require the unit to be on the ground.

Step 2 — Provide Unit Support

IMPORTANT: The unit must be secured to the curb by installing screws through the bottom of the curb flange and into the unit base rails. When installing large base units onto the common curb, the screws must be installed before allowing the full weight of the unit to rest on the curb. A minimum of six screws are required for large base units. Failure to secure unit properly could result in an unstable unit. See Warning near Rigging/Lifting information and accessory curb instructions for more details.

For hurricane tie downs, contact distributor for details and PE (Professional Engineering) Certificate if required.

ROOF CURB

Install accessory roof curb in accordance with instructions shipped with curb (See Fig. 4). Install insulation, cant strips, roofing, and flashing. Ductwork must be attached to curb.

IMPORTANT: The gasketing of the unit to the roof curb is critical for a water tight seal. Install gasketing material supplied with the roof curb. Improperly applied gasketing also can result in air leaks and poor unit performance.

Curb should be level to within 1/4 in. (6.35 mm) (See Fig 6). This is necessary for unit drain to function properly. Refer to accessory roof curb installation instructions for additional information as required.

Installation on older “G” series roof curbs.

Two accessory kits are available to aid in installing a new “G” series unit on an old “G” roof curb.

1.Accessory kit number CPADCURB001A00, (small chassis) and accessory kit number CPADCURB002A00, (large chassis) includes roof curb adapter and gaskets for the perimeter seal and duct openings. No additional modifications to the curb are required when using this kit.

2.An alternative to the adapter curb is to modify the existing curb by removing the outer horizontal flange and use accessory kit number CPGSKTKIT001A00 which includes spacer blocks (for easy alignment to existing curb) and gaskets for the perimeter seal and duct openings. This kit is used when existing curb is modified by removing outer horizontal flange.

!CAUTION

UNIT/STRUCTURAL DAMAGE HAZARD

Failure to follow this caution may result in property damage.

Ensure there is sufficient clearance for saw blade when cutting the outer horizontal flange of the roof curb so there is no damage to the roof or flashing.

SLAB MOUNT

Place the unit on a solid, level concrete pad that is a minimum of 4 in. (102 mm) thick with 2 in. (51 mm) above grade. The slab should extend approximately 2 in. (51 mm) beyond the casing on all 4 sides of the unit (See Fig. 7). Do not secure the unit to the slab except when required by local codes.

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Contents Table of Contents Safety ConsiderationsCheck Equipment Receiving and InstallationIntroduction Provide Unit Support50VL-A24-36 Unit Dimensions 50VL-A42-60 Unit Dimensions CPRFCURB011A00 SizeCPRFCURB010A00 CPRFCURB012A0050VL-A Unit Suggested Rigging Small Cabinet Large CabinetRig and Place Unit Provide ClearancesField-Fabricate Ductwork InspectionConnect Condensate Drain Install Duct ConnectionsConfiguring Units for Downflow Vertical Discharge Unit Component Damage Hazard Install Electrical ConnectionsHIGH-VOLTAGE Connections Standard Connection Special Procedures for 208-V OperationControl Voltage Connections Transformer ProtectionPhysical Data-Unit 50VL-A Minimum Airflow for Safe Electric Heater Operation CFMSTART-UP Start-Up Cooling Section And Make AdjustmentsPRE-START-UP Check for Refrigerant LeaksIndoor Airflow and Airflow ADJUST- Ments Unit Operation HazardCooling Sequence of Operation Single Speed Cooling with Higher Electric Heat SpeedContinuous FAN Operation Color Coding for Indoor Fan Motor LeadsUnit Motor Speed Wire Color Dry Coil Air Delivery Downflow DischargeLarge Cabinet Horizontal and Downflow Filter Pressure Drop Table IN. W.CElectric Heat Pressure Drop Tables IN. W.C Small Cabinet Unit Standard CFM Scfm Size50VL a Cont. Ladder Wiring Diagram 208/230-1-60 Connection Wiring Diagram 208/230-3-60 Cont. Ladder Wiring Diagram 208/230-3-60 Connection Wiring Diagram 50VL500271 Cooling Charging Chart Indoor Blower and Motor MaintenanceAir Filter Personal Injury and Unit Damage HazardOutdoor FAN Electrical Controls and WiringOutdoor Coil, Indoor Coil, and Condensate Drain Pan High-Pressure Switch Pressure SwitchesLoss of Charge/Low-Pressure Switch Air Conditioner Only Refrigerant CircuitTroubleshooting START-UP ChecklistTroubleshooting Chart Symptom Cause RemedyAIR Conditioner with Puron R-410A Quick Reference Guide Preliminary Information Model no TemperaturesRemove and Store in Job Files III. START-UP Electrical Supply Voltage Compressor Amps

50VL---A specifications

The Carrier 50VL---A is a powerhouse in the field of air conditioning and heating solutions, designed for residential and commercial applications. This unit exemplifies Carrier’s commitment to efficiency, reliability, and advanced technology. One of the standout features of the 50VL---A is its superior energy efficiency, which is reflected in its high Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF) ratings. These ratings ensure reduced energy consumption and lower utility bills, making it an environmentally friendly choice.

The 50VL---A is designed with a robust scroll compressor that not only enhances performance but also minimizes noise levels during operation. This compressor is integral to the system’s ability to maintain a consistent temperature and humidity level within the space. The unit’s sound-dampening features contribute to a quieter environment, which is particularly important in residential settings.

One of the key technologies integrated into the Carrier 50VL---A is the advanced microprocessor control system. This technology allows for precise temperature adjustments and operational diagnostics, making maintenance easier and more efficient. This system ensures that the unit operates at optimal performance, adapting to changing environmental conditions with ease.

Moreover, the 50VL---A is equipped with a multi-speed blower motor that provides enhanced airflow and comfort. This feature allows users to select different cooling or heating levels according to their specific requirements, promoting customized comfort throughout the home or office.

In addition to its performance capabilities, the Carrier 50VL---A is also built with longevity and durability in mind. The cabinet is constructed from high-quality materials that offer resistance to corrosion and wear, ensuring the unit can withstand various weather conditions over time. Furthermore, the unit’s maintenance-friendly design allows for easy access to key components, simplifying servicing and prolonging the life of the system.

Overall, the Carrier 50VL---A stands out as a reliable and advanced solution for climate control. With its energy-efficient operation, quiet performance, and user-friendly features, it represents a significant investment in home comfort and efficiency. Whether for heating during the colder months or cooling in the summer, the 50VL---A delivers exceptional performance, making it a popular choice among users seeking quality HVAC solutions.
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