Carrier 38GXC, 40GXQ Outdoor Unit Installation, If piping is going through the right or left side

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If piping is going through the right or left side:

1.Use a small saw blade to carefully remove the correspond- ing plastic covering on side panel and drill the appropriate size hole where the pipe is going through the wall. See Fig. 8(c).

2.Remove knockout 1 if you are running only the wiring. Remove knockout 1 and 2 or knockout 1, 2 and 3 if you are running both piping and wiring through the side of the unit.

OUTDOOR UNIT INSTALLATION

1.Use a rigid base to support unit in a level position.

2.Locate outdoor unit and connect piping and wiring.

!CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Excessive torque can break flare nut depending on installation conditions.

Piping Connections to Outdoor Unit

IMPORTANT: Use refrigeration grade tubing ONLY. No other type of tubing may be used. Use of other types of tubing will void manufacturer’s warranty.

Make sure there is enough piping to cover the required length between the outdoor and indoor unit.

Piping Guide:

SDo not open service valves or remove protective caps from

tubing ends until all the connections are made.

SBend tubing with bending tools to avoid kinks and flat spots. S Keep the tubing free of dirt, sand, moisture, and other

contaminants to avoid damaging the refrigerant system.

S Avoid sags in the suction line to prevent the formation of oil traps. Insulate each tube with minimum 3/8-in. (10 mm) wall thermal pipe insulation. Inserting the tubing into the insulation before making the connections will save time and improve installation quality.

1.Remove service valve cover if provided with unit.

2.Cut tubing with tubing cutter.

3.Install correct size flare nut onto tubing and make flare con- nection.

4.Apply a small amount of refrigerant oil to the flare connec- tion on the tubing.

5.Properly align tubing in with service valve.

6.Tighten flare nut and finish installation using two wrenches as shown in Fig. 10.

A07354

Fig. 10 ---Tighten Flare Nut

INSTALL ALL POWER AND INTERCONNECTING WIRING TO OUTDOOR UNIT

Strong wind

 

A07350

 

 

Fig. 11 ---High Wind Installation

 

Outdoor Unit Wiring Connections

 

1.

Mount outdoor power disconnect.

 

2.

Run power wiring from main box to disconnect per NEC

38/40GXC(Q)

4.

Connect conduit to the conduit panel on sizes 9k, 12k, and

 

and local codes. Set outdoor unit in place.

 

3.

Remove field wiring cover (on sizes 9k, 12k, and 18k) from

 

 

unit by removing screws. On size 24k, use the knockout

 

 

provided on the end panel.

 

 

18k. (See Fig. 12)

 

5.

Properly connect both power supply and control lines to ter-

 

 

 

minal block per the connection diagram.

 

6.

Ground unit in accordance with NEC and local electrical

 

 

codes.

 

7.

Use lock nuts to secure conduit.

 

8.

Reinstall field wiring cover on 9k, 12k, and 18k units.

 

!CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

SBe sure to comply with local codes while running wire

from indoor unit to outdoor unit.

SEvery wire must be connected firmly. Loose wiring may cause terminal to overheat or result in unit malfunction.

A fire hazard may also exist. Therefore, be sure all wiring is tightly connected.

SNo wire should be allowed to touch refrigerant tubing, compressor or any moving parts.

SDisconnecting means must be provided and shall be

located within sight and readily accessible from the air conditioner.

SConnecting cable with conduit shall be routed through hole in the conduit panel.

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Contents Table of Contents Installation Instructions38GXCQ / 40GXCQ 009, 012, 018 and 024 Parts List Parts ListSystem Requirements Safety ConsiderationsConnecting Power and Control Cable GeneralDimensions Outdoor Dimensions IndoorClearances Outdoor Clearances IndoorIndoor Unit Installation Installation GuideInstall Mounting Plate If piping is going through the right or left side Outdoor Unit InstallationField Wiring System Vacuum and Charge Using Vacuum PumpOutdoor Unit START-UPSystem Checks Indoor Unit38GXC/GXQ 40GXC/GXQ 009-024 Diagnostic Codes TroubleshootingCatalog No 40GX---4SI

38GXC, 38GXQ, 40GXC, 40GXQ specifications

Carrier's 40GXQ, 38GXQ, 38GXC, and 40GXC series are a testament to the brand’s commitment to innovation and excellence in HVAC technology. These units are designed to meet the diverse needs of commercial and residential applications while ensuring optimal performance, energy efficiency, and sustainability.

The 40GXQ model stands out for its advanced cooling capabilities and high efficiency. This rooftop unit employs a high-efficiency scroll compressor that enhances performance while minimizing energy consumption. With a cooling capacity ranging from 3 to 20 tons, the 40GXQ is ideal for larger spaces requiring significant cooling load management. It also features a user-friendly interface, allowing for easy adjustments and monitoring through a digital display.

The 38GXQ is particularly notable for its versatility and robust design. Featuring an integrated economizer, the 38GXQ allows for enhanced energy savings by leveraging outdoor air for free cooling when conditions permit. This model is equipped with high-efficiency filters that improve indoor air quality, making it suitable for applications in schools, offices, and healthcare facilities.

The 38GXC variant is designed for residential applications and emphasizes whisper-quiet operation without compromising performance. Its high SEER (Seasonal Energy Efficiency Ratio) rating means homeowners can enjoy substantial savings on their energy bills. The 38GXC is also equipped with Carrier's Greenspeed intelligence, which enables the system to modulate its output, maintaining comfort levels while reducing energy consumption.

The 40GXC model represents innovation in temperature control systems. With its sleek design and advanced variable-speed compressor, the 40GXC can adapt to changing conditions while maintaining efficiency and performance. This model also incorporates advanced monitoring systems that provide real-time data on performance and diagnostics, ensuring optimum efficiency throughout its lifecycle.

All these Carrier models are equipped with advanced refrigerant management systems, supporting environmentally friendly refrigerants that adhere to current environmental regulations. They not only provide effective cooling solutions but also contribute to a sustainable future, aligning with Carrier’s broader commitment to reducing carbon footprints.

In summary, the Carrier 40GXQ, 38GXQ, 38GXC, and 40GXC are engineered to deliver exceptional performance, energy efficiency, and versatility across various applications. With advanced technologies and a commitment to sustainability, these units set a high standard in the HVAC industry. Whether for commercial or residential use, these models provide reliable and efficient climate control solutions.
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