48/50HJ004-024 50TFQ004-012, 48/50TF,TM004-014 50HJQ004-016, 48/50TJ,TM016-028 Apollo Control

Installation, Operation, and Troubleshooting Instructions

SAFETY CONSIDERATIONS

Read these instructions entirely before modifying the base rooftop unit.

Before beginning any modification, make sure all power is disconnected to the unit and locked out. Failure to discon- nect power supply prior to servicing may result in serious injury. All wiring must comply with applicable national and local codes.

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical compo- nents. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform the basic maintenance functions of replacing filters. All other operations should be performed by trained service personnel. When working on air- conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.

When removing panels from the unit, be careful not to damage the roof or other surfaces with the panels.

GENERAL

The Apollo control is a relay pack which is factory wired and mounted in the Carrier rooftop unit. The Apollo control allows the unit to be connected to a thermostat and a communi- cation bus. The rooftop unit can then be used as part of a system which is controlled by devices on the communication bus. The thermostat and communication bus wiring must be field installed.

Do not turn on unit power until Apollo control and thermo- stat have been installed. Unit is shipped with loose leads which may cause electrical shock or death.

Carrier TEMP System — The Carrier TEMP System usually consists of more than one thermostat and can be ex- panded to meet whatever number of single zone systems are required.

The TEMP System thermostat maintains proper tempera- tures by controlling the amount of heated or cooled air supplied to the area in which it is installed or the area it controls (if using a remote room sensor).

Each thermostat is responsible for controlling the tempera- ture conditions in its space. Each thermostat will maintain its own independent occupied/unoccupied time schedule and heat- ing (if applicable) and cooling set points. This allows the user to program the TEMP System thermostat so that it will main- tain different temperature ranges at different times.

TEMP System Components — The Carrier TEMP System consists of one or more thermostats that communicate by way of a communication bus. Each thermostat controls an Apollo control which in turn controls the Carrier rooftop unit. See Fig. 1.

Each thermostat can be connected to others to provide com- munication between thermostats. Only one thermostat per sys- tem can have a timeclock that will broadcast time to the rest of the system. See Fig. 2.

TEMP SYSTEM THERMOSTATS — The 33CSTMT-01, or 33CSVMT-XX (with timeclock) and 33CSTM-01 or 33CSVM-XX (without timeclock) TEMP System thermostats (see Fig. 3) have the following features:

•controls temperature to user-defined set points

•eliminates the need for external timeclocks, manual override timer, night low limit thermostat, battery backup, or unit time guard

•operates with 3 system switches for supply-air fan and the unit heating (if applicable) and cooling stages

NOTE: For 33CSVM(T)-XX thermostats, the “XX” will be either “04,” “16,” or “32.”

HVAC — Heating, Ventilation, and Air Conditioning

*Where “XX” will be “04,” “16,” or “32.”

Fig. 1 — Carrier TEMP System Components

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

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Catalog No. 534-80082

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Replaces: 48/50H,T-2SI

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Carrier 48/50TF, 50HJQ004-016, 50TFQ004-012, 48/50HJ004-024, TM016-028, 48/50TJ specifications Safety Considerations, General
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TM004-014, TM016-028, 48/50TF, 50HJQ004-016, 48/50TJ specifications

Carrier has long been a leader in the heating, ventilation, and air conditioning (HVAC) industry, and their line of rooftop units, including the models 50TFQ004-012, 48/50HJ004-024, 48/50TJ, 50HJQ004-016, and 48/50TF, exemplifies their commitment to innovation and efficiency. These units are designed to meet the diverse needs of commercial buildings while providing precise climate control, reliability, and efficiency.

One of the main features of these rooftop units is their advanced cooling and heating capabilities. The units are equipped with high-efficiency scroll compressors that enhance performance and reduce energy consumption. This technology allows these units to operate efficiently even under varying load conditions, making them ideal for buildings with fluctuating occupancy levels.

In addition to their efficient compressors, Carrier rooftop units utilize variable speed fans, which help optimize airflow and further improve energy efficiency. The variable speed technology adjusts the fan speed to match the cooling or heating demand, ensuring a consistent and comfortable indoor environment. This adaptability not only enhances user comfort but also significantly reduces operational costs.

Another key characteristic of the 50TFQ004-012 and similar models is their compact design, making them suitable for a variety of rooftop spaces. These units are built with robust materials to endure harsh weather conditions, ensuring durability and long-lasting performance. Their lightweight construction also simplifies the installation process, allowing for faster project completion.

Furthermore, the models in this line come equipped with user-friendly control systems. These systems provide intuitive management and monitoring capabilities, allowing building operators to easily adjust settings and schedules. This feature ensures that energy consumption is kept to a minimum while maintaining optimal comfort levels.

Finally, Carrier incorporates advanced diagnostic features in these rooftop units, enabling proactive maintenance and reducing downtime. Through real-time monitoring, any potential issues can be addressed before they become significant problems.

In conclusion, Carrier's 50TFQ004-012, 48/50HJ004-024, 48/50TJ, 50HJQ004-016, and 48/50TF rooftop units blend powerful performance with cutting-edge technology. Their energy-efficient design, reliable components, and advanced control systems make them an excellent choice for any commercial HVAC application, ensuring a comfortable and cost-effective indoor environment.
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