MOTORMASTER® V CONTROL INSTALLATION

(48TJ024,028 UNITS)

Install Field-Fabricated Wind Baflles -- Wind baflles must be field-fabricated for all units to ensure proper cooling cycle operation at low ambient temperatures. See Fig. 21 for baflle details. Use 20-gage, galvanized sheet metal, or similar corro- sion-resistant metal for baffles. Use field-supplied screws to at- tach baffles to unit. Screws should be l/4-in, diameter and 5/8-in. long. Drill required screw holes for mounting baffles.

To avoid dmnage to the refligerant coils and electrical com-

ponents, use lecommended screw sizes only. Use cme when &'illing holes.

Install Motormaster V Controls -- The Motormaster V (MMV) control is a motor speed control device which adjusts condenser fan motor speed in response to declining liquid le- frigerant pressure. A properly applied Motormaster V control

extends the operating range of air-conditioning systems and permits operation at lower outdoor ambient temperatures.

The minimum mnbient temperatures at which the unit will operate are:

 

TEMPERATURE OPERATING LIMITS -- F°

Standard

Unit with

 

I

Unit with

Unit40

Low Ambient25

Kit

I

MMV -20Control

To operate down to the ambient temperatures listed, Motormaster V controls (Fig. 23) must be added. Field-fabricat- ed and installed wind baffles gue _dso required for _dl units (see Fig. 21). The Motormaster V control permits operation of the unit to an ambient temperature of-20 IF.The control regulates the speed of 3-phase fan motors that gue compatible with the control. These motors me factory installed.

See Table 6 for the Motormaster V control accessory pack- age usage. Table 7 shows applicable voltages and motors.

Replacement of motor or fan blade IS NOT REQUIRED ON

CURRENT PRODUCTION UNITS since the control is

compatible with the factory-installed fan motors. Only field wiring control is required.

Inst_dl the Motormaster V control per instructions supplied with accessory.

FROM FUSE BLOCK

10>-cao---1

u 1.2 1.3

 

o

 

o

 

B

 

13B

 

o

TO PRESSURE

ooo

TRANSDUCER

o

TO MOTOR(S)

Fig. 23 --Motormaster V Control

Table 6 --Motormaster V Control Package Usage

 

 

ITEM DESCRIPTION

 

208/230

CRLOWAMB015A00

48TJ024,028

460

CR LOWAMB016A00

UNIT

I VOLTAGE

CRLOWAMB017A00

 

575

Table 7 --Applicable Voltages and Motors

VOLTAGECOMPATIBLE MOTOR

208/230-3-60HD52AK654

480-3-60HD52AK654

575-3-60HD52GE576

16

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Carrier 48TJ016-028 Motormaster V Control Package Usage, Motormaster V Control Installation, Item Description, 48TJ024,028

48TJ016-028 specifications

The Carrier 48TJ016-028 is a notable model in the range of packaged rooftop units designed by Carrier, a leader in heating, ventilation, and air conditioning (HVAC) solutions. Tailored specifically for commercial applications, these units provide a blend of efficiency, durability, and reliability, making them suitable for a variety of settings, including offices, retail spaces, and industrial environments.

One of the standout features of the 48TJ series is its energy-efficient performance. Equipped with high-efficiency scroll compressors, these units offer superior cooling capacity while minimizing energy consumption. This aligns with modern sustainability goals, helping businesses reduce their carbon footprint and operational costs. Additionally, the 48TJ units comply with stringent industry standards, such as the ASHRAE 90.1 energy efficiency guidelines, ensuring that users receive a product that meets modern energy performance benchmarks.

The 48TJ016-028 units also include advanced technologies that enhance performance and user comfort. The inclusion of a sophisticated microprocessor control system facilitates precise temperature regulation, allowing for an optimal balance of cooling and heating based on real-time conditions. Moreover, the user-friendly controls make it easy for facility managers to monitor system performance and make adjustments as necessary.

Another notable characteristic of the 48TJ series is its flexible installation options. These rooftop units are designed for easy integration into existing building structures and can be installed on flat or pitched roofs. Their compact design and lightweight construction simplify the installation process while minimizing structural impacts on buildings.

Durability is paramount in the design of the 48TJ units as well. The cabinets are constructed from high-quality materials with corrosion-resistant coatings, ensuring a long lifespan even in harsh environmental conditions. The systems are also equipped with robust insulation to reduce sound levels and improve overall operating efficiency.

Furthermore, the Carrier 48TJ016-028 units offer various options for customization. Users can choose from different airflow configurations, heating options, and accessories, allowing for tailored solutions that meet specific requirements. Whether you are looking for a unit with enhanced filtration, economizer capabilities, or advanced humidity control, the 48TJ series provides the flexibility needed for diverse applications.

In summary, the Carrier 48TJ016-028 units deliver a compelling combination of energy efficiency, advanced technology, and robust construction, making them an ideal choice for commercial HVAC needs. With their versatile features and customizable options, they stand out as reliable solutions for maintaining comfortable indoor environments.