48TC

FOR OCCUPANCY CONTROL

REPLACE JUMPER WITH

FIELD-SUPPLIED TIME CLOCK

8

7

LEGEND

Potentiometer Defaults Settings:

NOTES:

DCV— Demand Controlled Ventilation

Power Exhaust

Middle

1.

620 ohm, 1 watt 5% resistor should be removed only when using differential

Minimum Pos.

Fully Closed

 

enthalpy or dry bulb.

IAQ — Indoor Air Quality

 

DCV Max.

Middle

2.

If a separate field-supplied 24 v transformer is used for the IAQ sensor power

LA — Low Ambient Lockout Device

OAT — Outdoor-Air Temperature

DCV Set

Middle

 

supply, it cannot have the secondary of the transformer grounded.

POT — Potentiometer

Enthalpy

C Setting

3.

For field-installed remote minimum position POT, remove black wire jumper

RAT — Return-Air Temperature

 

 

 

between P and P1 and set control minimum position POT to the minimum

 

 

 

 

position.

C06028

Fig. 72 - EconoMi$er IV Wiring

500 OHM RESISTOR

NOTE 1

RUN

NOTE 3

50HJ540573

ACTUATOR ASSEMBLY

DIRECT DRIVE

ACTUATOR

 

 

BLACK

4

TRANSFORMER

 

 

 

 

 

 

 

GROUND

 

 

 

3

 

 

 

 

5

 

 

 

BLUE

2

 

 

 

 

 

 

 

 

8

 

VIOLET

 

 

6

 

 

 

 

 

PINK

 

 

7

 

 

 

 

 

OAT SENSOR

 

RED

1

24 VAC

 

 

 

 

 

 

 

 

10

 

 

YELLOW

 

11

 

 

 

9

 

 

 

 

 

 

 

WHITE

 

4-20 mA

4-20mA SIGNAL

 

12

TO J9 ON

 

 

 

 

 

PremierLink

 

 

 

 

 

 

 

 

BOARD

 

 

ECONOMISER2 PLUG

NOTES:

1.Switch on actuator must be in run position for economizer to operate.

2.PremierLink™ control requires that the standard 50HJ540569 outside-air sensor be replaced by either the CROASENR001A00 dry bulb sen sor or HH57A077 enthalpy sensor.

3.50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.

C08310

Fig. 73 - EconoMi$er2 with 4 to 20 mA Control Wiring

56

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Image 56
Carrier 48TCA04---A12 appendix EconoMi$er IV Wiring
Page 55 Page 57

48TCA04---A12 specifications

The Carrier 48TCA04---A12 is a high-efficiency rooftop air conditioning unit designed for commercial and industrial applications. Known for its reliability and performance, this model features advanced technologies that cater to diverse climate control needs.

One of the standout features of the Carrier 48TCA04---A12 is its excellent energy efficiency, which adheres to the stringent standards set by the U.S. Environmental Protection Agency. The unit utilizes a highly efficient scroll compressor combined with state-of-the-art heat exchanger technology, allowing it to operate with minimal energy consumption while providing powerful cooling capabilities.

The unit comes equipped with a robust and durable design, built to withstand various environmental conditions. Its weather-resistant cabinet is constructed from high-quality materials, ensuring long-lasting performance even in harsh climates. Additionally, the unit features a galvanized steel structure with a powder-coated finish, further enhancing its resistance to corrosion and wear.

In terms of technologies, the Carrier 48TCA04---A12 incorporates advanced controls that promote optimal performance. The unit supports Carrier's smart connectivity options, facilitating remote monitoring and adjustments via smart devices. This feature ensures convenient energy management and allows maintenance teams to access performance data, leading to proactive service interventions.

Another important characteristic of this unit is its quiet operation. The design includes sound-reducing insulation and a well-engineered airflow system, minimizing noise levels to create a more comfortable indoor environment. This is particularly important for commercial spaces such as offices and retail environments, where a tranquil atmosphere is critical for customer satisfaction and productivity.

The Carrier 48TCA04---A12 also offers diverse application flexibility, making it suitable for various locations, from small retail stores to large warehouses. With several tonnage options available, users can select a model that perfectly aligns with their specific cooling needs. Additionally, the unit can be easily integrated with existing HVAC systems, providing a seamless solution for upgrading or retrofitting older installations.

To sum up, the Carrier 48TCA04---A12 rooftop air conditioning unit stands out due to its exceptional energy efficiency, durable construction, advanced technology, and quiet operation, making it a reliable choice for commercial and industrial cooling solutions. Its flexibility and smart technology integrations ensure that it meets a wide range of climate control requirements effectively.
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