Carrier 48MA/50ME016-040 specifications Shipping Shield Locations Units Shown

Page 9

Condensate Drains Ð Pipe nipples covered with foam rubber insulation are shipped in unit return air ®lter section (6 nipples in units 48MA, 4 nipples in units 50ME). Install a nipple in each drain connection on both sides of unit. See Fig. 1 and 2 for drain locations. Be sure foam rubber seals space between nipple and base rail opening to prevent rain leaks.

Connect a drain line to drain connection under outdoor air inlet grilles on both sides of unit. These drains need not be trapped.

Install a trapped drain line on remaining connections on lowest side of unit depending on unit pitch. If unit is level, a trapped drain may be installed at each connection if de- sired. Cap or plug unused connections on high side of unit to prevent air¯ow between unit interior and outdoors.

OUTDOOR AIR INLET

 

(ONE ON EACH SIDE OF UNIT)

FLUE OUTLET

SHIPPING SHIELD

COVER

(BEHIND LOUVERS)

(48MA ONLY)

 

Fig. 6 Ð Shipping Shield Locations

(016-030 Units Shown)

Do not interconnect drains. Make each trap a minimum of

4 in. deep. Insulate trap against freeze-up or use ¯exible material.

Gas Piping (48MA) Ð Unit is equipped for use with type of gas shown on nameplate. Refer to latest edition of ANSI Z223.1. Unit main gas connection and alternate gas connection locations are shown in Fig. 1, 4, and 8. Do not use gas supply pipe smaller than unit gas connection. Maxi- mum allowable natural gas supply pressure is 10.0 in. wg; minimum allowable natural gas supply pressure for full rate input is 5.0 in. wg.

Pitch pipe 1¤4 in. per 15 ft. Pitch all horizontal pipe runs upward to risers and from risers upward to meter. Install a dirt and moisture pocket (drip leg) at each section of vertical pipe run. Use only ground joint unions to ensure leakfree joints. Use only pipe joint compounds that are resistant to the action of lique®ed petroleum gases.

NOTE: Dimension to suit job requirements. Twelve inches will bring duct plenum to bottom of roof curb.

DIMENSIONS (in.)

UNIT

016,024

028,030

034,040

48MA,50ME

 

 

 

A*

75¤8

75¤8

75¤16

B*

75¤8

73¤4

53¤4

*Typical; both ends.

Fig. 7 Ð Field-Fabricated Zone Duct Plenum Detail

9

Page 8 Page 10
Image 9
Page 8 Page 10
Contents Contents Installation, Start-Up Service InstructionsInstallation Safety ConsiderationsBase Unit Physical Data and Dimensions 48MA Units Base Unit Physical Data and Dimensions 50ME Units Roof Curb Detail Removing Shipping Shields FigPhysical Data Roof Curb Physical Data and Dimensions 48MA Units Roof Curb Physical Data and Dimensions 50ME Units Shipping Shield Locations Units Shown Suggested Gas Piping 48MA Unit 48MA Electrical Data Unit 50ME Electrical Data Unit 50ME Electrical Application Data ECT Field Control WiringZone Control Board Component Location Cooling Cooling Stage 1 Ð First stage of modules 1, 2, Cooling Stage 1 Ð First stage of modules 1, 2, 3, Cooling Stage 1 Ð Modules 1 and 3 Stage 2 Ð Modules 2 Cooling Modules Setting Stage 1 Ð First stage of modules 1 Cooling Stage 1 Ð First stage of modules 1, 2, Cooling 50ME Two-Stage Heat, One-Stage Cool Ð 4 Module Joint Control Cooling Stage 1 Ð Modules 1 and 3 Stage 2 Ð Modules 2 Cooling Modules Setting HA1 HA2 APS START-UPAdjustment Gas Heat Lighting Procedure 48MAMGV Pressure Adjustment Natural GASSpoiler Screw Location Units with 3-ELEMENT Heaters Units with 2-ELEMENT HeatersAir¯ow Switches ServiceCabinet Panels and Grilles Condenser and OUTDOOR-AIR Cooling CoilsHead Pressure Control Compressor Capacity Control UnloadersTo ADD or Remove OIL LOW ChargeCondenser Fans Evaporator Fans and MotorFAN Shaft Bearing Removal Optional Economizer Ð See Fig Forced-Draft Blower 48MAPulley Removal OperationEconomizer and Exhaust Damper Assemblies, Exploded View Page Page Packaged Service Training Page RETURN-AIR Temperature OUTDOOR-AIR TemperaturePRE-START-UP Model no Serial no Date Technician

48MA/50ME016-040 specifications

The Carrier 48MA/50ME016-040 series represents a significant advancement in the field of commercial HVAC systems, designed to provide reliable, efficient, and effective climate control solutions for various applications. These units are widely recognized for their durability and performance, making them a top choice for building owners and managers seeking optimal comfort and energy efficiency.

One of the main features of the Carrier 48MA/50ME series is its advanced scroll compressor technology. The scroll compressors are known for their reliability and efficiency, which leads to reduced energy consumption and lower operating costs. This high-efficiency design not only contributes to significant energy savings but also minimizes noise levels, enhancing the overall comfort of the environment.

The units are equipped with a unique microprocessor-based control system that offers precise temperature control and flexibility. This technology allows for easy integration with building management systems, enabling users to monitor and control their HVAC systems remotely, thereby optimizing performance and energy use. The programmable thermostats help to tailor the operation of the units to meet the specific needs of the users, ensuring maximum comfort at all times.

In addition to its robust performance features, the Carrier 48MA/50ME series also boasts a comprehensive line of options for customization. These options include various cooling capacities ranging from 16 to 40 tons, allowing the equipment to cater to different building sizes and requirements. The series is also designed with a compact footprint, making it suitable for rooftop installations where space is at a premium.

Another important characteristic of the series is its environmentally friendly refrigerant options. Carrier prioritizes the use of refrigerants with low global warming potential, contributing to a more sustainable approach to HVAC solutions. This commitment to environmental responsibility not only complies with regulations but also meets the increasing demand for greener technologies.

Furthermore, the robust construction of the Carrier 48MA/50ME series ensures long-lasting performance in even the harshest conditions. The units are designed to withstand various environmental factors, making them ideal for both commercial and industrial applications. Overall, the Carrier 48MA/50ME016-040 series stands out as a reliable choice for efficient and effective heating and cooling solutions, equipped with innovative technologies that prioritize performance, sustainability, and user comfort.
Top Page Image Contents