Bryant 280ANV installation instructions Pumpdown & Evacuation, Pump Down

Page 11

Charging In Cooling Mode - 280ANV024/036

See user interface set in Charging Mode

Heating Check Chart - 280ANV024/036

 

400

 

 

For use in Heating Charging Mode only

 

 

2757

 

 

 

 

 

 

 

 

 

 

 

 

350

 

 

 

80ºFID

(27ºC)

 

 

 

2413

 

 

 

 

Vapor Service

 

70ºFID(21ºC)

 

 

 

 

(psig)

300

 

Valve Pressure

 

 

 

 

 

2068

(KPa)

 

 

 

 

 

 

 

 

(16ºC)

 

 

 

 

 

 

 

 

ID

 

250

 

 

 

 

 

 

60ºF

 

1724

Pressure

 

 

 

 

 

 

 

 

Pressure

200

 

 

 

 

 

 

 

 

1380

Refrigerant

150

 

 

 

 

 

 

 

 

1034

Refrigerant

100

 

 

 

 

 

 

 

 

690

 

Suction Pressure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

 

 

 

 

 

 

 

 

345

 

 

0

0

10

20

 

30

40

50

60

0

 

 

 

 

 

 

 

(-18ºC)

(-12ºC)

(-7ºC)

 

(-10ºC)

(4ºC)

(10ºC)

(16ºC)

 

 

Outdoor Ambient Temperature ºF (ºC)

A12045

280ANV024/036 Heating Pressure check Chart (Psig)

OD DB

 

 

Indoor Temperature (_F)

 

 

 

 

 

 

 

 

 

60

 

70

 

80

(_F)

 

 

 

 

 

 

 

 

 

High

Low

High

Low

High

Low

 

60

290

129

329

130

368

132

50

263

106

303

108

346

110

40

245

89

285

90

324

90

30

232

74

270

81

312

87

 

 

 

 

 

 

 

20

222

69

256

68

291

64

 

 

 

 

 

 

 

10

212

55

246

52

281

53

 

 

 

 

 

 

 

0

203

49

238

43

270

50

Fig. 12 - Heating Pressure Check Chart 280ANV024/036

Step 14 — Pumpdown & Evacuation

If this system requires either a Pump Down or Evacuation for any reason, the procedures below must be followed:

Pump Down

Because this system has an inverter controlled, compressor, suction pressure transducer and EXV, conventional procedure cannot be used to “pump down” and isolate the refrigerant into the outdoor unit. The UI (User Interface) has provisions to assist in performing this function.

1.Connect gages to 280ANV liquid and vapor or suction ca- pillary service ports to monitor operating pressures during and at completion of the procedure.

2.In the advanced menu of the UI, go to Checkout > Heat Pump> Pumpdown

3.Select mode to pump down in (COOL or HEAT), COOL mode allows refrigerant to be isolated in outdoor unit. HEAT mode allows the refrigerant to be isolated in indoor coil and lineset. Set desired time period. Default time peri- od for the procedure is 120 minutes.

4.Select Start on UI to begin the pumpdown process. Unit will begin running in selected mode after a brief delay.

5.Close the liquid service valve.

6.The unit will run in selected mode with the low pressure protection set to indicate pumpdown is complete when the suction pressure drops below 0 psig. Compressor protec- tions are still active to prevent damage to the compressor or inverter (high pressure, high current, high torque, scroll temperature, etc.) .

7.Once system indicates pumpdown complete or failure to complete shutdown, close vapor service valve.

8.If pumpdown does not complete due to compressor safety shutdown, a recovery system will be required to remove fi- nal quantity of refrigerant from indoor coil and line set.

9.Remove power from indoor and heat pump unit prior to ser- vicing unit.

Charging In Cooling Mode - 280ANV048/060

See user interface set in Charging Mode

Heating Check Chart - 280ANV048/060

For use in Heating Charging Mode only

 

450

 

 

 

 

 

 

 

 

3102

 

 

400

 

 

 

 

 

 

 

 

2757

 

 

350

Vapor Service

80ºF

ID(27ºC)

 

 

 

 

2413

 

 

Valve Pressure

 

 

 

 

 

 

 

70ºFID(21ºC)

 

 

 

 

 

Refrigerant Pressure (psig)

300

 

 

 

 

ID(16ºC)

 

2068

Refrigerant Pressure (KPa)

 

 

 

 

 

60ºF

 

 

 

 

 

 

 

 

 

250

 

 

 

 

 

 

 

1724

 

 

 

 

 

 

 

 

200

 

 

 

 

 

 

 

 

1380

150

 

 

 

 

 

 

 

 

1034

100

Suction Pressure

 

 

 

 

 

 

690

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

 

 

 

 

 

 

 

 

345

 

 

0

0

10

20

30

40

50

 

60

0

 

 

 

(-18ºC)

(-12ºC)

(-7ºC)

(-10ºC)

(4ºC)

(10ºC)

(16ºC)

 

 

Outdoor Ambient Temperature ºF (ºC)

A12046

280ANV048/060 Heating Pressure check Chart (Psig)

OD DB

 

 

Indoor Temperature (_F)

 

 

 

 

 

 

 

 

 

60

 

70

 

80

(_F)

 

 

 

 

 

 

 

 

 

High

Low

High

Low

High

Low

 

60

324

121

360

120

407

121

50

293

99

333

100

380

102

40

277

87

307

80

360

88

30

257

69

288

65

333

69

 

 

 

 

 

 

 

20

242

57

281

60

320

60

 

 

 

 

 

 

 

10

232

50

263

47

306

50

 

 

 

 

 

 

 

0

218

42

253

43

288

42

Fig. 13 - Heating Pressure Check Chart 280ANV048/060

NOTE: A small quantity of charge remains in the OD unit that must be manually recovered if isolating refrigerant to indoor coil and lineset via HEAT mode PUMP DOWN.

Evacuation and Recovery of Refrigerant from within 280ANV

Because this system has an EXV for the heating expansion device, additional steps must be taken to open the EXV if the heat pump unit must be evacuated for service reasons. If the EXV is not open when pulling a vacuum or recovering refrigerant from the heat pump unit, extended evacuation time may be required and/or inadequate vacuum obtained. The UI (User Interface) has provisions to open the EXV for refrigerant recovery and/or evacuation.

1.Connect gages to 280ANV liquid and vapor or suction ca- pillary service ports to monitor operating pressures during and at completion of the procedure. Attach recovery system or vacuum pump to gage set as needed for the service pro- cedure. The service valves must be open to evacuate the unit through the line set service ports. The suction capillary service port is a direct connection to the suction port of the compressor.

2.In the advanced menu of the UI, go to Checkout > Heat Pump> > Evacuation.

3.Set desired time period. Default time period for the proced- ure is 120 minutes.

4.Select START on UI to open the valve.

5.Begin evacuation or refrigerant recovery as required for the procedure after UI indicates the EXV is open. Power may be removed from heat pump after the UI indicates “READY TO EVACUATE.”

6.Remove power from indoor and heat pump unit prior to ser- vicing unit. The EXV will retain the open position.

NOTE: See service training materials for troubleshooting the EXV using EXV CHECK mode.

11

Image 11
Contents Table of Contents Installation InstructionsInverter Cover Safety ConsiderationsUnpack Unit InstallationInstallation Recommendations Check Equipment and Job SiteElevate Unit Install on a Solid, Level Mounting PadClearance Requirements Operating AmbientUnit Damage Hazard Accessory UsageMake Piping Connections Personal Injury and Unit Damage HazardRefrigerant Tubing connection Outdoor Install Liquid-Line Filter Drier IndoorNo Installation of Adapter Tube Outdoor Unit Connected to Factory-Approved IndoorCompressor Crankcase Heater Make Electrical ConnectionsFollow these steps to properly start up the system Install AccessoriesStart-Up System Functions And Sequence Of OperationDefrost Communication and Status Function LightsHeating Check Chart Procedure Check Charge Charge in Charging modePump Down Evacuation and Recovery of Refrigerant from within 280ANVPumpdown & Evacuation Major Components TroubleshootingTemperature Thermistors Pressure Switch ProtectionControl Fault 230V Line Power Disconnect DetectionVariable Speed Compressor Sensor Output Terminals Variable Speed Compressor Power Input TerminalsOutdoor Coil Thermistor Suction Thermistor OSTExample Status CodesVariable Speed Control Board With optional Utility Relay Hours TroubleshootingPuronr R-410A Refrigerant Quick Reference Guide Care and MaintenanceFinal Checks
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280ANV specifications

The Bryant 280ANV is a highly efficient air conditioning unit designed for residential use, providing homeowners with reliable cooling performance while maintaining energy efficiency. One of the standout features of the Bryant 280ANV is its two-stage compressor, which allows for variable speed operation. This means that the unit can adjust its cooling output to match the current demand for indoor comfort, leading to more consistent temperatures and increased energy savings.

The Bryant 280ANV also boasts an impressive SEER (Seasonal Energy Efficiency Ratio) rating, which indicates its energy efficiency. Typically, this model achieves a SEER rating of up to 20, making it a strong contender in the market for those looking to reduce their energy bills without sacrificing comfort. This level of efficiency not only results in lower monthly costs but also contributes to a reduced environmental footprint.

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The unit is also designed with durability in mind. Its cabinet is constructed from high-quality, weather-resistant materials that protect against harsh outdoor conditions. This ensures longevity and reliable performance over the years. Furthermore, the Bryant 280ANV includes a protected scroll compressor that adds an extra layer of reliability and enhances the unit's overall efficiency.

Installation of the Bryant 280ANV can be completed by a qualified HVAC professional, who can ensure that the system is set up to operate at peak performance. Additional features, such as the built-in Wi-Fi capability, allow homeowners to connect the unit to smart home systems for enhanced control and convenience.

In conclusion, the Bryant 280ANV combines energy efficiency with advanced technology to provide effective cooling solutions for residential spaces. With its two-stage compressor, high SEER rating, quiet operation, and durable construction, it meets the needs of modern homeowners who value comfort, efficiency, and reliability. Overall, the Bryant 280ANV stands out as a quality choice for those seeking a dependable air conditioning system.