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CARRIER commercial
OMNIZONE? 50XCW06-24 Water-Cooled

OMNIZONE? 50XCW06-24 Water-Cooled

Product catalog summary

Overview
The Carrier Corporation's 50XCW single-package water-cooled units are designed for high-efficiency cooling in commercial and industrial settings. These units are compact, durable, and aesthetically pleasing, making them suitable for various environments.

Key Features

Design Flexibility: Available in six sizes (5 to 20 tons), these units cater to diverse applications such as offices, factories, and retail spaces. They offer both ducted and free return options with vertical supply air discharge.
Installation and Maintenance: Pre-piped and wired at the factory, these units ensure easy installation and maintenance. Front access panels facilitate quick inspections and service.
Customer Satisfaction: The units feature a high-quality baked enamel finish and are designed to exceed customer expectations in terms of space and styling.
Energy Efficiency: The 50XCW units are designed to surpass ASHRAE 90.1 (2010) guidelines, ensuring energy-efficient operation.
Special Features: Include high-impact polystyrene air inlet grilles, high-efficiency scroll compressors, brazed-plate condensers, and space-saver slab type evaporator and condenser coils.
Environmental Responsibility: Utilizes Puron® refrigerant (R-410A), which is environmentally friendly and compliant with the Montreal Protocol.

Technical Specifications

Model Number Nomenclature: The units are identified by a specific code that indicates features such as condenser option, voltage, unit size, and control options.
AHRI Capacity Ratings: The units are tested according to ARHI standard 340/360, with capacities ranging from 66,000 to 242,000 Btuh.
Physical Data: Includes details on unit dimensions, operating weight, compressor type, evaporator fan specifications, and more.

Performance and Efficiency

Energy Efficiency Ratios: The units have EER and IEER ratings that reflect their energy efficiency under various conditions.
Compressor Protection: Features such as current-sensing lockout relays and high/low-pressure stats ensure compressor longevity and reliability.

Warranty and Standards

Warranty: A standard limited 5-year warranty on the compressor and a 1-year warranty on other parts.
Manufacturing Standards: Units are built in an ISO 9001:2000 certified facility and are fully run-tested to ensure quality and reliability.

Specifications:
- Cooling capacity: 84,000 Btuh
- Evaporator air quantity: 4,000 cfm
- Summer entering-air conditions: 80°F dry bulb, 67°F wet bulb
- Entering water temperature: 85°F
- Entering condenser air temperature: 95°F
- Flow rate: 20 gpm
- Unit voltage: 460 V
- External static pressure required: 0.3 in. wg

Unit Selection:
- Based on cooling requirements, the 50XCW12 unit is selected.
- Airflow: 4,000 cfm
- Entering air temperature: 80°F/67°F
- Entering water temperature: 85°F
- Flow rate: 20 gpm
- Total capacity (TC): 137,300 Btuh
- Sensible heat capacity (SHC): 101,400 Btuh
- Compressor motor power input: 7.46 kW

Fan Requirements:
- External static pressure (ESP) required: 0.30 in. wg
- For 50XCW12 at 4,000 cfm and 0.30 ESP, fan operates at 689 rpm and requires 1.14 brake horsepower.
- Standard motor horsepower is 1 HP; an optional 1.5 HP motor is required.

Performance Data:
- Gross cooling capacities are provided for various conditions and configurations.
- Key parameters include total capacity (TC), sensible heat capacity (SHC), leaving dry bulb (LDB), leaving wet bulb (LWB), and compressor motor power input (kW).

Notes:
- Dimensions are in inches.
- Unit clearances are specified as 24 inches (typical), 36 inches, and 16 inches.

Technical Document Summary

1. Specifications:
The document provides detailed performance data for various HVAC units, specifically focusing on evaporator fan performance across different models and capacities (5 Tons, 7.5 Tons, 10 Tons, 12 Tons, and 15 Tons). Key parameters include CFM (Cubic Feet per Minute), ESP (External Static Pressure), RPM (Revolutions Per Minute), and Bhp (Brake Horsepower).

2. Procedures:
Fan performance is based on standard conditions, including a 1-inch standard throwaway filter, unit casing, and dry DX coil losses at sea level. Interpolation of data is permitted, but extrapolation is not allowed.

3. Norms and Standards:
The document adheres to standard HVAC performance measurement practices, ensuring data is presented for various static pressures and motor horsepower options.

4. Recommendations:
Users are advised to refer to the Physical Data table for motor horsepower options and to account for static pressure losses from any additional options or accessories before consulting the fan performance table.

5. Key Data Interpretation:
Tables provide RPM and Bhp values for different CFM and ESP levels, indicating the performance of the evaporator fans under various conditions. Higher CFM and ESP values generally require higher RPM and Bhp, indicating increased energy consumption and fan speed.

6. Critical Information:
Understanding the relationship between CFM, ESP, RPM, and Bhp is crucial for selecting the appropriate fan performance for specific HVAC applications. Proper selection ensures efficient operation and energy consumption.

Evaporator Fan Performance: The document provides detailed performance data for evaporator fans, including brake horsepower (Bhp) and external static pressure (ESP) across various RPMs and CFM values. Key notes include the availability of multiple motor horsepower options, the necessity to account for static pressure losses from options or accessories, and the prohibition of extrapolation in data interpretation.

Unit Electrical Data: This section outlines the electrical specifications for different unit models, including voltage ranges, rated load amps (RLA), and locked rotor amps (LRA) for compressors. It emphasizes compliance with NEC requirements and the use of appropriate overcurrent protective devices.

Fan Electrical Data: Details the full load amps (FLA) for various motor codes and horsepower ratings, specifying voltage ranges and phase requirements. It highlights the importance of using conductors suitable for high temperatures and copper conductors only.

Operating Sequence: Describes the operational sequence of the units, including the role of thermostats, fan circulation, cooling stages, and safety mechanisms like the Cycle-LOC™ device. It also mentions the use of a time-delay relay to prevent compressor restart within five minutes of stopping.

Installation Guidelines: Provides recommendations for unit location, isolation, ductwork, and piping. It advises on acoustical considerations, duct insulation, and the use of strainers and pressure gauges in piping systems. Operational limits for airflow, air temperature, water flow, and water temperature are specified.

Water Quality and Glycol Operation: Offers guidelines for maintaining water quality to ensure unit longevity, including limits on suspended solids, chlorides, and other chemical parameters. It also provides performance adjustment factors for systems using ethylene glycol to prevent freezing.

HVAC Guide Specifications: Specifies the general system description, quality assurance standards, and compliance with industry standards for indoor self-contained water-cooled units. It mentions the use of hermetic scroll compressors and the requirement for units to be UL listed and ISO certified.

Delivery, Storage, and Handling: Units must be stored and handled according to the manufacturer's recommendations to ensure proper function and longevity.

Equipment Specifications:

General: The unit is a factory-assembled, single-piece, water-cooled cooling unit featuring scroll refrigerant compressors, a fan section with belt drive centrifugal fans, an evaporator coil section, a brazed plate condenser, and factory wiring and controls. It uses refrigerant R-410A and can operate with or without return ductwork.
Unit Cabinet: Constructed from 18-gauge zinc alloyed steel with a baked enamel finish, the cabinet is designed to withstand a 500-hour salt spray test. It is fully insulated, features a double slope drain pan, and has easily removable service panels.
Evaporator Fan Section: Features double inlet centrifugal fans with forward curved blades, belt drive with adjustable pitch motor pulley, and high-efficiency NEMA frame motors.
Compressor: Hermetic scroll compressors are internally protected and factory-mounted with vibration isolators.
Coils: Evaporator coils have aluminum fins bonded to copper tubes, designed according to ANSI/ASHRAE 15 standards. They are accessible for cleaning.
Filter: The filter frame is upstream of the cooling coil, accommodating cleanable or disposable filters, accessible from either side.
Condenser: A single pass, water-cooled, stainless steel brazed plate construction providing positive subcooling, with a maximum working pressure of 400 psig.
Operating Characteristics: The unit provides constant air volume at specified static pressure, with dual-stage cooling capacity control and independent refrigerant circuits for each compressor.
Controls and Safeties: Includes a control terminal block, digital thermostat, and factory-installed safeties like pressure switches and motor overload protection.
Electrical Requirements: All power wiring enters at a single location, with a 24-v control circuit suitable for a field-supplied thermostat.
Refrigerant Components: Includes thermal expansion valves, filter driers, and insulated suction piping to prevent refrigerant drain back.
Special Features: Optional air discharge plenum for adjustable airflow, field-installed heating coil, and a range of thermostats for various applications.

Manufacturer's Note: Specifications and designs are subject to change without notice.

Catalog excerpts

Product Data OMNIZONE™ 50XCW06-24 Water-Cooled Indoor Self-Contained Systems with PURON® Refrigerant (R-410A) 5 to 20 Nominal Tons The 50XCW single-package watercooled units with integral air-cooled condensers offer: • Compact, durable, and attractive cabinet fits any working environment • Ducted or free return with rear return connections with vertical supply air discharge • High-efficiency cooling for commercial and industrial projects • Puron® refrigerant (R-410A) Features/Benefits The Omnizone 50XCW units provide a practical and economical approach to comfort conditioning requirements for offices, factories, and other applications in existing buildings when indoor aircooled condensers are required. Design flexibility The 50XCW water-cooled indoor packaged units are designed to provide the flexibility required in replacement, renovation, and new construction. Units are available in 6 sizes from 5 tons to 20 tons which meet the needs for cooling restaurants, retail stores, warehouses, offices, and building additions. a50-8527 Copyright 2011 Carrier Corporation Form 50XCW-2PD

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Features/Benefits (cont) The compact footprint and service from the front of the units save valuable floor space in equipment rooms. Belt drive motors provide adequate static to overcome ducting and louver static losses. These units can be installed in the equipment room or the conditioned space and used for either ducted or free return applications. Unit supply air discharge is vertical. Easy installation and maintenance The units are completely pre-piped and wired at the factory to ensure time and money saving installation and service. Exterior access panels are easily removed to provide speedy...

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Model number nomenclature 50XC W 24 A A – G 5 A A – 0 AA Factory-Installed Options Code See codes in unit price pages 50XC – OMNIZONE™ Indoor Packaged Unit Condenser Option W – Water-Cooled Design Revision Level 0 – Original Release Unit Size – Nominal Tons 06 – 5 14 – 12 08 – 7.5 16 – 15 12 – 10 24 – 20 Reserved for later use Condenser Coil Options A – No Low Ambient Option, No Service Valve, No Strainer Water Connections/Discharge Air Options A – Right Hand, Vertical Discharge, Ducted E – Right Hand, Horizontal Discharge, Ducted Control Options A – Standard Controls Heating Coil Options A –...

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Dimensions — 50XCW06,08 REAR RETURN, VERTICAL DISCHARGE SIZE SIZE UNIT 50XCW 06 08 WIDTH HEIGHT DEPTH COND SECTION EVAP SECTION A 53.1 53.1 B 57.0 57.0 C 29.0 29.0 D 25.8 25.8 E 31.0 31.0 NOTE: Dimensions are in inches. WATER RETURN CONN EVAPORATOR RETURN DUCT F 47.2 47.2 G 24.8 24.8 H 28.9 28.9 I 4.8 4.8 J 14.4 14.4 K 23.0 23.0 WATER SUPPLY CONN L 22.9 22.9 M 7.5 7.5 EVAP SUPPLY DUCT (Blower Opening) N 13.4 13.4 O 12.8 12.8 P 2.7 2.7 Q 19.8 7.6 SUPPLY/ RETURN DIAMETER (OD) R 1.625 1.625 a50-8667 5

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Dimensions — 50XCW12,14 REAR RETURN, VERTICAL DISCHARGE UNIT 50XCW 12 14 WIDTH A 68.0 68.0 HEIGHT DEPTH B 64.0 64.0 C 31.2 31.2 NOTE: Dimensions are in inches. 6 COND SECTION EVAP SECTION D 28.0 28.0 E 35.5 35.5 EVAPORATOR RETURN DUCT F 61.1 61.1 G 31.8 31.8 H 29.4 29.4 I 5.5 5.5 WATER RETURN CONN J K 17.7 22.7 17.7 22.7 WATER SUPPLY CONN L M 10.8 4.2 10.8 4.2 EVAP SUPPLY DUCT (Blower Opening) N 12.5 12.5 O 13.8 13.8 P 8.5 8.5 Q 13.6 13.6 SUPPLY/ RETURN DIAMETER (OD) R 2.125 2.125 a50-8668

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REAR RETURN, VERTICAL DISCHARGE WITH HEAD PRESSURE CONTROL (HPC) UNIT 50XCW 12 14 WIDTH A 68.0 68.0 HEIGHT DEPTH B 64.0 64.0 C 31.2 31.2 NOTE: Dimensions are in inches. COND SECTION EVAP SECTION D 28.0 28.0 E 35.5 35.5 EVAPORATOR RETURN DUCT F 61.1 61.1 G 31.8 31.8 H 29.4 29.4 I 5.5 5.5 WATER RETURN CONN J K 17.7 22.7 17.7 22.7 WATER SUPPLY CONN L M 25.6 10.1 25.6 10.1 EVAP SUPPLY DUCT (Blower Opening) N 12.5 12.5 O 13.8 13.8 P 8.5 8.5 Q 13.6 13.6 SUPPLY/ RETURN DIAMETER (OD) R 2.125 2.125 a50-8669 7

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Dimensions — 50XCW12,14 (cont) REAR RETURN, FRONT DISCHARGE UNIT 50XCW 12 14 WIDTH A 68.0 68.0 HEIGHT DEPTH B 64.0 64.0 C 31.2 31.2 NOTE: Dimensions are in inches. 8 COND SECTION EVAP SECTION D 28.0 28.0 E 35.5 35.5 EVAPORATOR RETURN DUCT F 61.1 61.1 G 31.8 31.8 H 29.4 29.4 I 5.5 5.5 WATER RETURN CONN J K 17.7 22.7 17.7 22.7 WATER SUPPLY CONN L M 10.8 4.2 10.8 4.2 EVAP SUPPLY DUCT (Blower Opening) N 12.5 12.5 O 13.8 13.8 P 2.7 2.7 Q 13.6 13.6 a50-8670 SUPPLY/ RETURN DIAMETER (OD) R 2.125 2.125

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REAR RETURN, FRONT DISCHARGE WITH HEAD PRESSURE CONTROL (HPC) UNIT 50XCW 12 14 WIDTH A 68.0 68.0 HEIGHT DEPTH B 64.0 64.0 C 31.2 31.2 NOTE: Dimensions are in inches. COND SECTION EVAP SECTION D 28.0 28.0 E 35.5 35.5 EVAPORATOR RETURN DUCT F 61.1 61.1 G 31.8 31.8 H 29.4 29.4 I 5.5 5.5 WATER RETURN CONN J K 17.7 22.7 17.7 22.7 WATER SUPPLY CONN L M 25.6 10.1 25.6 10.1 EVAP SUPPLY DUCT (Blower Opening) N 12.5 12.5 O 13.8 13.8 P 2.7 2.7 Q 13.6 13.6 SUPPLY/ RETURN DIAMETER (OD) R 2.125 2.125 a50-8671 9

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Dimensions — 50XCW16,24 REAR RETURN, VERTICAL DISCHARGE UNIT 50XCW 16 24 WIDTH A 88.0 88.0 HEIGHT DEPTH B 66.7 70.8 C 31.2 31.2 NOTE: Dimensions are in inches. 10 COND SECTION EVAP SECTION D 31.2 31.2 E 35.5 39.5 WATER RETURN CONN EVAPORATOR RETURN DUCT F 81.0 81.5 G 31.8 35.8 H 33.2 33.3 I 5.5 5.5 J 17.8 17.8 K 22.8 22.8 WATER SUPPLY CONN L 10.7 10.7 M 4.2 4.2 EVAP SUPPLY DUCT (Blower Opening) N 12.5 14.9 O 13.8 13.8 P 8.5 8.6 a50-8672 Q 13.5 8.3 S 11.7 13.2 SUPPLY/ RETURN DIAMETER (OD) R 2.625 2.625

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REAR RETURN, VERTICAL DISCHARGE WITH HEAD PRESSURE CONTROL (HPC) UNIT 50XCW 16 24 WIDTH A 88.0 88.0 HEIGHT DEPTH B 66.7 70.8 C 31.2 31.2 NOTE: Dimensions are in inches. COND SECTION EVAP SECTION D 31.2 31.2 E 35.5 39.5 WATER RETURN CONN EVAPORATOR RETURN DUCT F 81.0 81.5 G 31.8 35.8 H 33.2 33.3 I 5.5 5.5 J 17.8 17.8 K 22.8 22.8 WATER SUPPLY CONN L 25.6 25.6 M 10.1 10.1 EVAP SUPPLY DUCT (Blower Opening) N 12.5 14.9 O 13.8 13.8 P 8.5 8.6 Q 13.5 8.3 S 11.7 13.2 SUPPLY/ RETURN DIAMETER (OD) R 2.625 2.625 a50-8673 11

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Dimensions — 50XCW16,24 (cont) REAR RETURN, FRONT DISCHARGE UNIT 50XCW 16 24 WIDTH A 88.0 88.0 HEIGHT DEPTH B 66.7 70.8 C 31.2 31.2 NOTE: Dimensions are in inches. 12 COND SECTION EVAP SECTION D 31.2 31.2 E 35.5 39.5 WATER RETURN CONN EVAPORATOR RETURN DUCT F 81.0 81.5 G 31.8 35.8 H 33.2 33.3 I 5.5 5.5 J 17.8 17.8 K 22.8 22.8 WATER SUPPLY CONN L 25.6 25.6 M 10.1 10.1 EVAP SUPPLY DUCT (Blower Opening) N 12.5 14.9 O 13.8 13.8 P 2.6 2.6 Q 13.5 8.3 S 11.7 13.2 SUPPLY/ RETURN DIAMETER (OD) R 2.625 2.625 a50-8674

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OMNIZONE? 50XCW06-24 Water-Cooled

OMNIZONE? 50XCW06-24 Water-Cooled

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