Carrier 50TCQA Convert to Horizontal and Connect, Ductwork when required, Positioning on Curb

Page 8

 

Positioning on Curb —

 

Position unit on roof curb so that the following clearances

 

are maintained: 1/4 in. (6.4 mm) clearance between the

 

roof curb and the base rail inside the front and rear, 0.0 in.

 

clearance between the roof curb and the base rail inside on

 

the duct end of the unit. This will result in the distance

 

between the roof curb and the base rail inside on the

 

condenser end of the unit being approximately equal to

 

Fig. 3, section C-C.

 

Although unit is weatherproof, guard against water from

 

higher level runoff and overhangs.

 

After unit is in position, remove the compressor access

 

panel. Holding the blocking between compressors with

 

one hand, cut the strapping. Carefully remove the

 

50TCQA

blocking without damaging tubing, wiring, or controls.

Remove the strapping and replace the access panel.

Remove all shipping materials and top skid. Recycle or

dispose of all shipping materials.

 

Step 7 — Convert to Horizontal and Connect

 

Ductwork (when required)

 

 

Unit is shipped in the vertical duct configuration. Unit

 

without factory-installed economizer or return air smoke

 

detector option may be field-converted to horizontal

 

ducted configuration. To convert to horizontal

 

configuration, remove screws from side duct opening

 

covers and remove covers. Using the same screws, install

 

covers on vertical duct openings with the insulation-side

 

down. Seals around duct openings must be tight. See

 

Fig. 6.

C06108

Fig. 6 - Horizontal Conversion Panels

Field-supplied flanges should be attached to horizontal duct openings and all ductwork should be secured to the flanges. Insulate and weatherproof all external ductwork, joints, and roof or building openings with counter flashing and mastic in accordance with applicable codes.

Do not cover or obscure visibility to the unit’s informative data plate when insulating horizontal ductwork.

Step 8 — Install Outside Air Hood

Economizer Hood Removal and Setup - Factory Option

1.The hood is shipped in knock-down form and located in the return air compartment. It is attached to the economizer using two plastic tie-wraps.

2.To gain access to the hood, remove the filter access panel. (See Fig. 7.)

3.Locate and cut the (2) plastic tie-wraps, being careful to not damage any wiring. (See Fig. 8.)

4.Carefully lift the hood assembly through the filter access opening and assemble per the steps outlined in Economizer Hood and Two–Position Hood on page 10.

FILTER ACCESS PANEL

COMPRESSOR

ACCESS PANEL

OUTDOOR-AIR OPENING AND

INDOOR COIL ACCESS PANEL

C06023

Fig. 7 - Typical Access Panel Locations

Remove Hood Parts

Cut Plastic Ties

(2) Places

Economizer

C08633

Fig. 8 - Economizer Wiring

8

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Contents Installation Instructions 50TCQA Unit Dimensional Drawing 04 07 Size Units Unit Dimensional Drawing 04 07 Size Unit Plan for Unit LocationProvide Unit Support Plan for Sequence of Unit InstallationInspect unit Roof Curb Details Field Fabricate Ductwork Rig and Place UnitDuctwork when required Install Outside Air HoodEconomizer Hood Removal and Setup Factory Option Convert to Horizontal and ConnectTwo Position Damper Hood Removal and Setup Factory Option Damper AssemblyInstall External Condensate Trap and Line Economizer Hood and Two-Position HoodField Power Supply Make Electrical ConnectionsUnits with Factory-Installed Disconnect Convenience OutletsFactory-Option Thru-Base Connections Splice BLU +460 480 H2 + H3 575 600Field Control Wiring Heat Anticipator SettingsUnits without Thru-Base Connections ThermostatElectric Heaters Heater Model NumberTypical Module Installation PremierLinkt Factory-Option PremierLink ControllerPremierLink Wiring Schematic 55 Space Temperature Sensor Wiring Space Thermostat Connections PremierLink Sensor Usage Space Sensor Mode Thermostat ModeOutside and Return Air Enthalpy Sensor Wiring Economizer controlsIndoor CO2 Sensor 33ZCSENCO2 Connections PremierLink Filter Switch Connection Recommended Cables Color Code Recommendations2413 or American A22503 Belden 8772 Columbia 02525RTU-MP control system RTU-MP Multi-Protocol Control BoardRTU-MP System Control Wiring Diagram RTU-MP Controller Inputs and Outputs Space Temperature SPT Sensors 33ZCT59SPT Economizer controlsConnecting Discrete Inputs Filter Status Fan StatusPower Exhaust output Communication Wiring Protocols GeneralDS = Dip Switch BACnet MS/TP SW3 example shown Remote OccupancyLocal Access RTU-MP Troubleshooting Communication LEDsSystem ControllerLEDs LEDs on the RTU-MP show the status of certain functionsController Assembly Smoke Detector LocationsCompleting Installation of Return Air Smoke Sensor Typical Return Air Detector LocationUnit Wire/MOCP Sizing Data Pwrd C.O 56/5965/69 74/8074/79 44/4649/52 79/8661/64 79/8555/58 72/7870/74 79/8469/75 43/4675/79 84/9052/54 61/6547/50 57/6170/76 82/9053/55 62/6676/82 88/95Smoke Detectors Adjust Factory-Installed OptionsEconoMi$er IV Occupancy Switch Install Accessories Pre-Start and Start-Up50TCQA 50TCQA Catalog No 50TCQ---01SI

50TCQA specifications

The Carrier 50TCQA is a split system air conditioner known for its efficiency, reliability, and innovative technology. Designed for commercial and residential applications, this model provides a solution that combines comfort with cost-effectiveness, making it a popular choice for homeowners and businesses alike.

One of the key features of the Carrier 50TCQA is its impressive SEER (Seasonal Energy Efficiency Ratio) rating, which ensures optimal energy efficiency. This means that users can enjoy lower utility bills while maintaining a comfortable indoor climate. The unit is engineered to perform well even in extreme temperatures, providing effective cooling and heating when needed.

This model employs a scroll compressor, which is known for its durability and quiet operation. The compressor's design allows for smoother operation and reduced noise levels, making it suitable for use in noise-sensitive environments. Additionally, the 50TCQA is equipped with a multi-speed fan, allowing for adjustable airflow to match the specific comfort requirements of different spaces.

The Carrier 50TCQA utilizes advanced refrigerant technology, specifically the environmentally friendly R-410A refrigerant. This refrigerant helps to reduce greenhouse gas emissions and provides efficient cooling without depleting the ozone layer. The unit's design is also focused on minimizing refrigerant leaks, ensuring environmental safety and reliability over the long term.

Ease of installation and maintenance is another significant characteristic of the Carrier 50TCQA. The unit features a compact and lightweight design, making it easier for technicians to install and service. Moreover, the system is equipped with diagnostic capabilities that allow for quick identification of issues, enhancing service efficiency and reducing downtime.

In terms of control, the Carrier 50TCQA offers a sophisticated thermostat option that includes programmable settings. Users can easily set desired temperatures, timers, and operating modes, ensuring optimal comfort throughout the day and night.

Overall, the Carrier 50TCQA presents a robust solution for climate control needs. With its energy-efficient performance, advanced technologies, and user-friendly features, it embodies Carrier's commitment to providing high-quality heating and cooling solutions that cater to modern lifestyle requirements. This model stands out as an excellent option for those looking to invest in a reliable HVAC system that enhances comfort while being mindful of energy consumption and environmental considerations.
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