Carrier 38AH044-084 specifications Unit Control Box

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TRANSFORMERS

 

TIMERS

 

 

 

TIME-DELAY

 

 

 

RELAY

 

 

 

OIL PRESSURE

FUSE

TERMINAL

COMPRESSOR

SWITCHES

HOLDERS

BLOCKS

CONTACTORS

Fig. 48 Ð Unit Control Box

FAN CONTACTORS

COMPRESSOR CIRCUIT BREAKERS

FAN CIRCUIT

BREAKER

TERMINAL

BLOCKS

Required Compressor Modi®cation for 38AH044- 084 Optional Single-Circuit Units, When Com- pressor A1 is Out Ð To maintain unit operation, com- pressor no.1 must be operable. If it is not operable, the following temporary modi®cations must be made to keep the unit running:

1.

Change the oil pressure switch connections from com-

 

pressor A1 to compressor A2.

2.

Connect compressor A2 into the Time Guard circuit as

 

compressor A1 was originally.

3.

Open compressor A1 circuit breaker.

NOTE: Make sure the crankcase heaters are energized when compressors are off.

NOTE: Fan rotation is clockwise when viewed from top of unit.

Fig. 49 Ð Condenser Fan Adjustment

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Contents Installation, Start-Up Service Instructions Rigging Center of Gravity Ð in. mm UnitModule Unit Total Operational Corner Weight WeightCheck Compressor Mounting Dimensions Ð Units 38AH044,054,064 Dimensions Ð Units 38AH074,084 Chart 1, Field Power Supply Connections Dimensions Ð Unit 38AH094Dimensions Ð Unit 38AH104 Dimensions Ð Unit 38AH124 Dimensions Ð Unit 38AH134 Ð Units 38AH044-084 Physical Data Ð 50/60 Hz SI Ð Units 38AH044-084 Physical Data Ð 50/60 Hz EnglishÐ Units 38AH094-134 Physical Data Ð 50/60 Hz SI Ð Units 38AH094-134 Physical Data Ð 50/60 Hz EnglishControl BOX Sheet Metal Cover Panel Removed Ð Typical Module with Cover Panels Removed Make Refrigerant Piping Connections Liquid LiftUnit Maximum Liquid Lift STR Ð Street Pipe D Diameter UnitDual Circuit Single Circuit 38AH 044 Total Linear Length of Interconnecting Pipe Ð FT M Unit 15¤8 21¤8 124B,134A 074 Total Linear Length of Interconnecting Pipe Ð FT Unit124B, 134A 074 15-20 20-50 50-7538AH 6.1 TXV Ð Thermostatic Expansion Valve TYP Ð Typical Units 38AH124 and 134 with Installed Piping Kit Fully Assembled Piping and Trim Kit Unit 38AH134 Shown Kit RailsÐ Electrical Data Ð 50/60 Hz 38AH044-084 Dual-Circuit Units Make Electrical ConnectionsOptional SINGLE-CIRCUIT Unit Compressor FLARLA CKT Model Electrical Data Ð 50/60 Hz Units 38AH094,104Unit Voltage Nameplate Supply COMPRESSOR² MCA DesignationControl Circuit Electrical Data Ð 50/60 Hz Electrical Data Ð 50/60 Hz Units 38AH124Unit 38AH Module Fan Motor Electrical DataUnit Condenser FAN 38AH Nameplate Qty Total No.* FLA Each No.* LRA EachLength Ð Insulated Wire Ð AWG Length Ð Insulated Wire Ð AWG Field Wiring, One 2-Stage Thermostat Ð Units 38AH094 Field Wiring, One 2-Stage Thermostat Ð Units 38AH124 GND Terminal Block for Field Wiring, Single ModuPanel Control, Unit 38AH094 Field Wiring, Single ModuPanel Control, Unit 38AH104 Field Wiring, Single ModuPanel Control, Units 38AH124 Control Power Install AccessoriesMain Power Connection and Control Circuit Wiring Main Power Connection Control Circuit06E Compressors, Typical Preliminary ChecksAdjust Refrigerant Charge Compressor, Lead Compressor Lag Index of Lead/Lag Circuits and Compressors044-084 094 104 124 134 38AH STD OPT Lead CircuitCharging Chart Ð Unit 38AH044 50/60 Hz Ð Dual Circuit Charging Chart Ð Unit 38AH064 50/60 Hz Ð Dual Circuit Page Page Charging Chart Ð Unit 38AH104 50/60 Hz Charging Chart Ð Unit 38AH094 50/60 HzControl by Pressure ± 10 Switch Opens 160 Switch Closes 255 Refrigerant CircuitFan Cycling Control Ð Psig kPag CUT-IN Ð Cutout Ð Pressure Switch Settings Psig kPagSwitch Cutout CUT-IN Capacity ControlLoaded Cylinders Quantity of Loaded System Unit Compressor Cylinders38AH Circuit Total Unit Quantity System CapacityControl Timer Cycle Unit Control Box Compressor Replacement Ð Perform the following Compressor OIL Required06E-250 06E-265 06E-275 06E-299 Problem Solution Compressor does not RUN Compressor Stops on HIGH-PRESSURE SwitchCompressor Cycles on LOW-PRESSURE Switch Troubleshooting Pre-Start-Up Preliminary InformationComp A1 Comp A2 Comp B1 Comp B2 Start-Up

38AH044-084 specifications

The Carrier 38AH044-084 is an innovative air conditioning unit designed to provide efficient cooling solutions for residential and light commercial applications. This model is a part of Carrier's Aqua Series and is well-regarded for its combination of performance, energy efficiency, and innovative features.

One of the standout characteristics of the Carrier 38AH044-084 is its high-efficiency rating, which often exceeds the minimum efficiency standards set by the Department of Energy. Its Seasonal Energy Efficiency Ratio (SEER) rating is commendable, indicating significant energy savings over traditional air conditioning units. This efficiency translates to lower utility bills and a reduced carbon footprint, making it an environmentally friendly option.

In terms of technology, the Carrier 38AH044-084 is equipped with a modern scroll compressor. This type of compressor is known for its durability and quiet operation, contributing to a more pleasant indoor environment. The unit also incorporates advanced refrigerant technology, often using R-410A refrigerant, which is recognized for its lower environmental impact compared to older refrigerants like R-22.

The design of the 38AH044-084 focuses on ease of installation and maintenance. The compact footprint makes it suitable for various installation scenarios, whether on rooftops or ground levels. Additionally, the unit is engineered for durability, featuring weather-resistant components that can withstand harsh environmental conditions.

Another notable feature is the advanced airflow system, which ensures even distribution of cooled air throughout the space. This technology minimizes hot spots and enhances overall comfort. Furthermore, the unit supports a range of thermostatic controls, allowing users to customize their cooling experience according to their specific needs.

The Carrier 38AH044-084 is also designed with noise reduction in mind. Its sound-dampening technology helps minimize operational noise, making it a suitable choice for residential areas where noise levels are a concern.

In summary, the Carrier 38AH044-084 offers an excellent combination of energy efficiency, advanced technology, and user-friendly features. Whether for a home or a light commercial space, this unit provides reliable cooling performance while maintaining a focus on environmental responsibility and occupant comfort. With its robust design and innovative capabilities, it's a solid choice for those seeking effective and efficient air conditioning solutions.
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