Carrier 38AH044-084 specifications Make Electrical Connections

Page 23

Step 4 Ð Make Electrical Connections

POWER SUPPLY Ð Electrical characteristics of available power supply must agree with unit nameplate rating. Supply voltage must be within the limits shown in Tables 10A or 10B, 11 and 12. See Table 13 for control circuit data and Table 14 for fan motor electrical data.

IMPORTANT: Operation of unit on improper supply voltage or with excessive phase imbalance constitutes abuse and can affect any Carrier warranty.

FIELD POWER CONNECTIONS Ð All power wiring must comply with applicable local and national codes. Install ®eld- supplied, branch circuit safety disconnect(s) of a type that can be locked off/open. Disconnects must be located within sight of, and readily accessible from, the unit in compliance with NEC (National Electrical Code) (U.S.A. Standard) Article 440-14.

All ®eld power enters the unit through a hole in the con- trol box shelf. Refer to Fig. 20-28 for ®eld wiring details.

MAIN POWER Ð Units 38AH044-104 have single-point power connection to simplify ®eld-power wiring (all power enters at one end). Units 38AH124 and 134 require 2 con- nection points, one for each module. Units may use copper, copper-clad aluminum, or aluminum conductors at all volt- ages. The maximum wire size units can accept per terminal block is 500 kcmil.

Power must be supplied as shown in Table 15.

CONTROL CIRCUIT WIRING Ð Control circuit wiring is accomplished with a step-down transformer on voltage des- ignations 500, 600, and 100 in table below where the pri- mary voltage is ®eld voltage. For 208/230-v, 3-ph, 60-Hz units, ensure that the transformer primary is wired properly for the voltage which will be applied. All control wiring must comply with applicable local and national codes. The safety circuits are 24 v on all units. The safety circuit voltage is created with a step-down transformer where main control voltage is the transformer primary voltage.

See Table 13 for control circuit information.

Table 10A Ð Electrical Data Ð 50/60 Hz (38AH044-084 Dual-Circuit Units)

 

 

 

STANDARD UNIT

 

 

 

 

 

COMPRESSOR*

 

 

Voltage

Compressor

Nameplate

Supply Voltage²

 

 

 

A1

B1

 

38AH

A1/B1

 

 

MCA

MOCP

ICF

 

 

 

 

 

 

 

Designation

Model No.

V-Ph-Hz

Min

Max

 

 

 

RLA

 

LRA

RLA

 

LRA

 

 

 

 

 

 

 

 

 

500

 

208/230-3-60

187

254

179.4

225

434.7

67.9

 

345

67.9

 

345

 

600

 

460-3-60

414

508

91.3

100

218.6

34.6

 

173

34.6

 

173

044

100

 

575-3-60

518

632

78.4

100

162.4

28.8

 

120

28.8

 

120

200

06E4250/250

380-3-60

342

418

93.5

125

241.2

34.6

 

191

34.6

 

191

 

800 (PW)

 

230-3-50

198

254

180.2

225

296.7

67.9

 

207

67.9

 

207

 

900

 

380/415-3-50

342

440

91.5

100

219.6

34.6

 

173

34.6

 

173

 

300 (PW)

 

346-3-50

325

367

100.0

125

165.9

33.3

 

115

33.3

 

115

 

500

 

208/230-3-60

187

254

206.6

250

535.7

67.9

 

345

89.7

 

446

 

600

 

460-3-60

414

508

102.4

125

268.6

34.6

 

173

43.6

 

223

054

100

06E4250/265

575-3-60

518

632

88.0

125

206.4

28.8

 

120

36.5

 

164

200

380-3-60

342

418

107.1

150

297.2

34.6

 

191

45.5

 

247

 

 

 

 

 

900

 

380/415-3-50

342

440

102.7

125

269.6

34.6

 

173

43.6

 

223

 

300 (PW)

 

346-3-50

325

367

107.0

150

198.9

33.3

 

115

44.9

 

148

 

500

 

208/230-3-60

187

254

249.3

350

617.5

89.7

 

446

106.4

 

506

 

600

 

460-3-60

414

508

115.5

150

307.6

43.6

 

223

46.8

 

253

064

100

06E8265/275

575-3-60

518

632

100.6

125

226.1

36.5

 

164

40.4

 

176

200

380-3-60

342

418

126.9

175

341.1

45.5

 

247

52.6

 

280

 

 

 

 

 

900

 

380/415-3-50

342

440

114.1

150

335.6

43.6

 

223

46.8

 

280

 

300 (PW)

 

346-3-50

325

367

129.8

175

230.5

44.9

 

148

53.8

 

168

 

500

 

208/230-3-60

187

254

330.5

450

829.0

106.4

 

506

147.4

 

690

 

600

 

460-3-60

414

508

148.6

200

408.2

46.8

 

253

65.4

 

345

074

100

06E8275/299

575-3-60

518

632

132.2

175

336.8

40.4

 

176

57.1

 

276

200

380-3-60

342

418

174.5

250

458.0

52.6

 

280

78.8

 

382

 

 

 

 

 

900

 

380/415-3-50

342

440

143.0

200

403.8

46.8

 

280

65.4

 

345

 

300 (PW)

 

346-3-50

325

367

170.8

250

300.4

53.8

 

168

79.5

 

229

 

500

 

208/230-3-60

187

254

371.5

500

870.0

147.4

 

690

147.4

 

690

 

600

 

460-3-60

414

508

167.2

225

426.8

65.4

 

345

65.4

 

345

084

100

06E8299/299

575-3-60

518

632

148.9

200

353.5

57.1

 

276

57.1

 

276

200

380-3-60

342

418

200.7

250

484.2

78.8

 

382

78.8

 

382

 

 

 

 

 

900

 

380/415-3-50

342

440

167.6

225

428.4

65.4

 

345

65.4

 

345

 

300 (PW)

 

346-3-50

325

367

205.3

250

334.9

79.5

 

229

79.5

 

229

See page 24 for Legend and Notes.

23

Image 23
Contents Installation, Start-Up Service Instructions Module Rigging Center of Gravity Ð in. mmUnit Check Compressor Mounting Unit Total Operational Corner WeightWeight 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 Unit Maximum Liquid Lift Make Refrigerant Piping ConnectionsLiquid Lift Dual Circuit Single Circuit 38AH 044 STR Ð StreetPipe D Diameter Unit 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 Unit38AH 6.1 124B, 134A 07415-20 20-50 50-75 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 ConnectionsRLA Optional SINGLE-CIRCUIT Unit CompressorFLA 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 HzFan Cycling Control Ð Psig kPag Control by Pressure ± 10 Switch Opens 160 Switch Closes 255Refrigerant Circuit 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 06E-250 06E-265 06E-275 06E-299 Compressor Replacement Ð Perform the followingCompressor OIL Required Compressor Cycles on LOW-PRESSURE Switch Problem Solution Compressor does not RUNCompressor Stops on HIGH-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.