Carrier manual 50XT Suggested Rigging, Selection Procedure, Given

Page 10

50XT SUGGESTED RIGGING

-in. (914 mm)

DETAIL A

A06298

SELECTION PROCEDURE

Determine cooling and heating requirements at design conditions

Given:

REQUIRED COOLING CAPACITY (TC) . . . . . . 34,500 BTUH SENSIBLE HEAT CAPACITY (SHC) . . . . . . . . . 24,000 BTUH REQUIRED HEATING CAPACITY (SHC) . . . . . 36,000 BTUH CONDENSER ENTERING AIR TEMPERATURE 95°F (35°C)

INDOOR-AIR TEMPERATURE . . . 80°F (26.6°C) EDB, 67°F (19.4°C) EWB

EVAPORATOR AIR QUANTITY . . . . . . . . . . . . . . . 1200 CFM ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . 230-1-60

Select unit based on required cooling capacity

Enter Net Cooling Capacities table at condenser entering temperature of 95°F (35°C). The 036 unit at 1200 cfm and 67°F (19.4°C) ewb (entering wet bulb) will provide a total capacity of 34,600 Btuh and a SHC of 24,220 Btuh. Calculate SHC correction, if required, using Note 4 under Cooling Capacities tables.

Select electric heat

Enter the 036 unit Heating Extended Performance table at 1200 cfm. At 70°F (21.1°C) return indoor air and 20°F (-6.6°C) air entering outdoor coil, the integrated heating capacity is 16,810 Btuh. (Select integrated heating capacity value since deductions for outdoor-coil frost and defrosting have already been made. No correction is required.)

The required heating capacity is 36,000 Btuh. Therefore, at least 19,190 Btuh additional electric heat is required.

Determine additional electric heat capacity in kW.

19,190 Btuh

3414 Btuh/kW

= 5.6kW of heat required

 

 

 

 

A06296

 

 

 

 

 

CABINET

MODEL

RIGGING WT

 

 

 

 

 

 

lb

 

kg

Small

50XT--024

418

 

190

50XT--030

448

 

203

 

 

 

 

 

 

 

 

50XT--036

469

 

213

Large

50XT--042

491

 

223

50XT--048

497

 

225

 

 

 

50XT--060

548

 

249

NOTE: See dimensional drawing for corner weight distribution. Corner

weights shown on drawing are based on unit---only weights and do

not include packaging.

 

 

 

Enter the Electric Heater table on page 5 for 208/230v, single-phase, unit. The 7.2-kW heater at 240v most closely satisfies the heating required. To calculate kW at 230v, multiply the heater kW by multiplication factor 0.92 found in the Multiplication Factors table on page 29.

7.2 kW x 0.92 = 6.6 kW

6.6kW x 3414 Btuh/kW = 22,532 Btuh Total unit heating capacity is 39,342 Btuh (16,810 + 22,532).

Select unit that corresponds to power source available

The Electrical Data table shows that the unit is designed to operate at 208/230-1-60.

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Contents FEATURES/BENEFITS Product DataTable of Contents Model Number Nomenclature ARI* CapacitiesPhysical Data Unit SizeOptions and Accessories Factory-installed optionsFilter Rack Manual Outside AIR Damper50XT024-030 Unit Dimensions 50XT036-060 Unit Dimensions Accessory Dimensions No TE a50XT Suggested Rigging Selection ProcedureGiven 50XT024 High Cool Performance DATA-STANDARD ECM Indoor MotorCooling Extended Performance Table 50XT024 Low CoolHeating Capacity 50XT024 High 50XT024 High Con’tHeating Capacity 50XT024 Low 50XT024 Low Con’tTotal Sens 875 50XT030 High Cool50XT030 Low Cool 1000Heating Capacity 50XT030 High 50XT030 High Con’tHeating Capacity 50XT030 Low 50XT030 Low Con’t50XT036 High Cool 50XT036 Low CoolHeating Capacity 50XT036 High 50XT036 High Con’tHeating Capacity 50XT036 Low 50XT036 Low Con’t50XT042 High Cool 50XT042 Low CoolHeating Capacity 50XT042 High 50XT042 High Con’tHeating Capacity 50XT042 Low 50XT042 Low Con’t1600 50XT048 High Cool50XT048 Low Cool 96515.6 Heating Capacity 50XT048 High50XT048 High Con’t 21.1Heating Capacity 50XT048 Low 50XT048 Low Con’t2000 50XT060 High Cool50XT060 Low Cool 1750Heating Capacity 50XT060 High 50XT060 High Con’tHeating Capacity 50XT060 Low 50XT060 Low Con’tPerformance Data Multiplication FactorsWet coil air delivery low stage Typical Piping and Wiring Application Data Electrical Data PH-HZ Range FLA Nominal MCA Mocp MIN MAX RLA LRATypical Wiring Schematic Controls Sequence of OperationGuide Specifications Model Number 50XT Part I GeneralSpecial Features Catalog No 50XT---04PD

50XT specifications

The Carrier 50XT series represents a significant advancement in commercial rooftop air conditioning systems, delivering robust performance and energy efficiency for a variety of applications. Designed primarily for light commercial buildings, these units are a preferred choice for their reliability and advanced features.

One of the standout features of the Carrier 50XT is its energy efficiency. The system boasts a high Seasonal Energy Efficiency Ratio (SEER), which translates to reduced operational costs and a lower environmental impact. This efficiency is further enhanced by the use of variable speed scroll compressors, which adjust their speed based on the cooling demand, ensuring optimal performance while consuming less energy.

The 50XT series is equipped with an advanced microprocessor control system that allows for precise management of the unit’s operations. This smart technology facilitates easy integration with building management systems, enabling real-time monitoring and control. Additionally, the control system provides diagnostic capabilities, making maintenance and troubleshooting more straightforward and efficient.

The unit also features an innovative air distribution system that enhances indoor air quality. With the inclusion of advanced filtration options, the Carrier 50XT effectively reduces airborne pollutants and allergens, contributing to a healthier indoor environment. The design ensures optimized airflow and temperature control, making it suitable for a wide range of commercial settings.

Durability is another hallmark of the Carrier 50XT, which is constructed with robust materials resists corrosion and ensures a long operational life. The units are designed to withstand harsh environmental conditions, making them a reliable choice for various climates.

Furthermore, the Carrier 50XT series supports various refrigerants, including R-410A, which is known for its lower environmental footprint. This adaptability not only meets current regulatory standards but also positions the units as forward-thinking solutions for the evolving landscape of HVAC technology.

In conclusion, the Carrier 50XT series combines cutting-edge technology, energy efficiency, and durability, making it an ideal choice for light commercial applications. With features designed to enhance performance and comfort, as well as environmentally responsible operation, the 50XT units stand out as a smart investment for any commercial building.
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