Carrier 50TC Units with Factory-Installed Disconnect, All units, Thru-Base Connections

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50TC

The unit is factory wired for the voltage shown on ;the nameplate. Refer to the unit label diagram for additional information.

!WARNING

FIRE HAZARD

Failure to follow this warning could result in intermittent operation or performance satisfaction.

Do not connect aluminum wire between disconnect switch and air conditioning unit.. Use only copper wire. (See Fig. 17.)

ELECTRIC

DISCONNECT

SWITCH

COPPER

WIRE ONLY

ALUMINUM

WIRE

A93033

Fig. 17 - Disconnect Switch and Unit

Units Without Factory-Installed Disconnect —

When installing units, provide a disconnect switch of adequate size per local or national wiring code. Disconnect sizing data is provided on the unit informative plate. Locate on unit cabinet or within sight of the unit per national or local codes. Do not cover unit informative plate if mounting the disconnect on the unit cabinet.

Units with Factory-Installed Disconnect —

The factory-installed option disconnect switch is located in a weatherproof enclosure located under the main control box. The manual switch handle is accessible through an opening in the access panel.

All units -

All field wiring must comply with all local codes. Size wire based on MCA (Minimum Circuit Amps) on the unit informative plate. See Fig. 18 for power wiring connections to the unit power terminal block and equipment ground.

Provide a ground-fault and short-circuit over-current protection device (fuse or breaker) per local code (or U.S.A. NEC Article 440). Refer to unit informative data plate for MOCP (Maximum Over-current Protection) device size.

All field wiring must comply with the appropriate national electrical codes and local requirements.

Units Without Disconnect Option

C IFC

11 13 13

Disconnect

L1 L2 L3

Units With Disconnect Option

Factory

Wiring

1 3 5

Optional

Disconnect

Switch

2 4 6

L1 L2 L3

Disconnect factory test leads; discard.

C09411

Fig. 18 - Power Wiring Connections

Table 2 – American/European Wire Conversions

AMERICAN

EUROPEAN

 

 

 

Industry

American

European

Standard Size

Conversion (mm2)

Standard Size (mm2)

20 AWG

0.52

0.5

 

 

 

18 AWG

0.82

1.0

 

 

 

16 AWG

1.30

1.5

 

 

 

14 AWG

2.08

2.5

 

 

 

Thru-Base Connections —

This service connection kit consists of a 12.7 mm (1/2-in) electrical bulkhead connector and a 31.75 mm (11/4-in) electrical bulkhead connector, all factory-installed in the embossed (raised) section of the unit basepan in the condenser section. The 12.7 mm (1/2-in) bulkhead connector enables the low-voltage control wires to pass through the basepan. The 31.75 mm (11/4-in) electrical bulkhead connector allows the high-voltage power wires to pass through the basepan. See Fig. 19.

LOW VOLTAGE

CONDUIT

CONNECTOR

HIGH VOLTAGE

CONDUIT

CONNECTOR

C08637

Fig. 19 - Thru-Base Connection Fittings

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Contents Installation Instructions 50TC Unit Dimensional Drawing 07 Size Units Unit Dimensional Drawing 07 Size Unit Unit Dimensional Drawing 08, 09 and 12 Size Units Plan for Unit Location Roof mountProvide Unit Support Plan for Sequence of Unit InstallationInspect unit Roof Curb Details 07 Size Units Roof Curb Details 08 12 Size Units Field Fabricate Ductwork Unit Leveling TolerancesEconomizer Hood Removal and Setup Factory Option Convert to Horizontal and Connect Ductwork when requiredInstall Outside Air Hood Rig and Place UnitEconomizer Hood and Two-Position Hood Two Position Damper Hood Removal and SetupFactory Option Install External Condensate Trap and Line Make Electrical ConnectionsThru-Base Connections Units with Factory-Installed DisconnectAll units Units without Thru-Base Connections Field Control WiringHeat Anticipator Settings ThermostatElectric Heaters Heater Model NumberAccessory Electric Heater Control Connections PremierLinkt Factory-Option PremierLink ControllerPremierLink Wiring Schematic PremierLink Sensor Usage 33ZCT55SPT CRTEMPSN001A00Space Sensor Mode Thermostat Mode55 Space Temperature Sensor Wiring Enthalpy Switch HH57AC077 Connections Economizer controlsIndoor CO2 Sensor 33ZCSENCO2 Connections PremierLink Filter Switch Connection PremierLink Wiring Fan Pressure Switch ConnectionColor Code Recommendations PremierLink CCN Bus ConnectionsRTU-MP control system RTU-MP Multi-Protocol Control BoardRTU-MP System Control Wiring Diagram RTU-MP Controller Inputs and Outputs Type of I/O Connection PIN Name Numbers InputsSpace Temperature SPT Sensors RTU-MP T-55 Sensor ConnectionsConnecting Discrete Inputs Filter Status RTU-MP / Indoor CO2 Sensor 33ZCSENCO2 ConnectionsRemote Occupancy Communication Wiring Protocols GeneralFan Status Local Access RTU-MP Troubleshooting Communication LEDsLEDs LEDs on the RTU-MP show the status of certain functionsEconoMi$er IV Occupancy Switch Adjust Factory-Installed OptionsInstall Accessories Pre-Start and Start-UpUnit Wire/MOCP Sizing Data STD17.5 108 Disc 50TC Catalog No 50TC---C02SI

50TC specifications

The Carrier 50TC is a cutting-edge commercial rooftop unit designed for optimal performance and reliability in a variety of HVAC applications. This unit is particularly well-suited for small to medium-sized facilities that require efficient heating, ventilation, and air conditioning solutions. A hallmark of the Carrier 50TC is its impressive energy efficiency, enabling users to significantly lower their operational costs while maintaining a comfortable indoor environment.

One of the standout features of the Carrier 50TC is its advanced performance technologies. The unit employs a high-efficiency scroll compressor that enhances refrigerant management, allowing for exceptional cooling capacities while minimizing energy consumption. Additionally, the unit is equipped with variable speed fans, which further contribute to its operational efficiency. These fans adjust their speed according to the cooling demands, allowing the system to consume energy only when necessary.

The Carrier 50TC also incorporates an innovative control system that provides intelligent diagnostics and an array of customizable settings. This system helps in monitoring the unit's performance, ensuring maximum efficiency and early detection of potential maintenance issues. Users can easily integrate the unit within their existing building management systems, enhancing overall operational control and streamlining HVAC management procedures.

Durability and ease of maintenance are key characteristics of the Carrier 50TC, designed specifically to withstand harsh weather conditions while providing long-lasting performance. The unit's robust construction includes a powder-coated cabinet, which not only improves its aesthetic appeal but also protects against corrosion, ensuring longevity.

Moreover, the Carrier 50TC is designed with eco-friendliness in mind. It utilizes environmentally friendly refrigerants, aligning with modern regulations aimed at reducing the impact of HVAC systems on the environment. By choosing the Carrier 50TC, businesses can contribute to sustainability efforts while enjoying effective temperature control.

In summary, the Carrier 50TC combines energy efficiency, advanced technologies, and robust design to deliver a reliable HVAC solution for commercial applications. With its smart control system, high-efficiency components, and eco-friendly operation, the Carrier 50TC sets a standard for performance and sustainability in the commercial heating and cooling market.
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