The High Static option supply fan motor is equipped with

a pilot-circuit Thermix combination overtemperature/overcurrent protection device. This device resets automatically. Do not bypass this switch to correct trouble. Determine the cause and correct it.

Condenser Fan Motor Protection

The condenser fan motor is internally protected against overtemperature.

Relief Device

A soft solder joint at the suction service access port provides pressure relief under abnormal temperature and pressure conditions (i.e., fire in building). Protect this joint during brazing operations near this joint.

Control Circuit, 24-V

The control circuit is protected against overcurrent conditions by a circuit breaker mounted on control transformer TRAN. Reset is manual.

DISCONNECT

EMT OR RIGID CONDUIT

SINGLE

CENTER

MANUAL RESET

MOUNTING

(FIELD-SUPPLIED)

POINT BOX

POST

LIMIT SWITCH

LOCATION

 

 

 

HEATER

 

 

 

 

 

 

 

 

COVERS

 

 

SINGLE POINT

 

 

 

MAIN

BRACKET AND

BOX

HEATER

HEATER

HEATER

CONTROL CONDUIT

MOUNTING

MODULE

MODULE

MOUNTING

BOX

DRIP BOOT

SCREW

(LOCATION 1) (LOCATION 2) BRACKET

CONTROL WIRE TERMINAL BLOCK

C08134

Fig. 28 - Typical Component Location

50TC

ELECTRIC HEATERS

50TC units may be equipped with field-installed accessory electric heaters. The heaters are modular in design, with heater frames holding open coil resistance wires strung through ceramic insulators, line-break limit switches and a control contactor. One or two heater modules may be used in a unit.

Heater modules are installed in the compartment below the indoor (supply) fan outlet. Access is through the indoor access panel. Heater modules slide into the compartment on tracks along the bottom of the heater opening. See Figs 27 - 29.

DISCONNECT MOUNTING

LOCATION

UNIT BLOCK-OFF

OUTDOOR

INDOOR

ACCESS

PANEL

ACCESS PANEL

PANEL

 

 

C08133

Fig. 27 - Typical Access Panel Location (3-6 Ton)

TRACK

FLANGE

C08135

Fig. 29 - Typical Module Installation

Not all available heater modules may be used in every unit. Use only those heater modules that are UL listed for use in a specific size unit. Refer to the label on the unit cabinet re approved heaters.

Unit heaters are marked with Heater Model Numbers. But heaters are ordered as and shipped in cartons marked with a corresponding heater Sales Package part number. See Table 4 for correlation between heater Model Number and Sales Package part number.

NOTE: The value in position 9 of the part number differs between the sales package part number (value is 1) and a bare heater model number (value is 0).

Table 4 – Heater Model Number

Bare Heater Model

C

R

H

E

A

T

E

R

0

0

1

A

0

0

Number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heater Sales Package

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PNO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Includes:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bare Heater

C

R

H

E

A

T

E

R

1

0

1

A

0

0

Carton and packing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

materials

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Installation sheet

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

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Image 21
Carrier 50TCA04-A07 Electric Heaters, Relief Device, Control Circuit, Condenser Fan Motor Protection, Heater Model Number

50TCA04-A07 specifications

The Carrier 50TCA04-A07 is a prominent model from Carrier, a leader in the heating, ventilation, and air conditioning (HVAC) industry. Designed for commercial applications, this unit exemplifies advanced technology and reliability, catering to a wide array of cooling needs.

One of the most notable features of the Carrier 50TCA04-A07 is its high efficiency. With a cooling capacity that suits various settings, it is engineered to provide excellent performance with minimal energy consumption. The unit achieves impressive Seasonal Energy Efficiency Ratio (SEER) ratings, which not only reduce operational costs but also lower the environmental impact.

The Carrier 50TCA04-A07 employs state-of-the-art inverter technology. This innovation allows the compressor to operate at varying speeds, adjusting its output according to the cooling demand. Consequently, the system can maintain optimal comfort levels while using less energy. Additionally, the inverter technology contributes to quieter operation, making it a suitable choice for environments where noise is a concern.

Durability is a hallmark of the Carrier 50TCA04-A07. Constructed with robust materials, this model is designed to withstand harsh conditions and ensure long-term reliability. The unit is equipped with corrosion-resistant components, extending its lifespan and maintaining performance quality over time.

Another significant characteristic of the Carrier 50TCA04-A07 is its advanced control system. The integrated control panel provides easy access to performance settings and monitoring capabilities. Users can effortlessly adjust temperatures and modes, ensuring a customizable climate. Furthermore, compatibility with smart building management systems enhances operational efficiency and real-time monitoring.

Regarding safety features, the Carrier 50TCA04-A07 is equipped with multiple sensors and automated responses to prevent overheating and ensure safe operation. These safety mechanisms not only protect the unit but also contribute to the overall safety of the installation environment.

In summary, the Carrier 50TCA04-A07 is a highly efficient, durable, and technologically advanced HVAC solution for commercial spaces. Its innovative features, including inverter technology, robust construction, and smart control systems, set it apart in the market, making it a reliable choice for businesses seeking to optimize their climate control needs while minimizing energy consumption and operational costs.