Table of Contents
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24VNA6
Infinity™ Variable Speed Air Conditioner
with Greenspeed™ Intelligence
2 to 5 Nominal Tons
NOTE: Read the entire instruction manual before starting the installation.
Table of contents
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Inverter Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step1 - Check Equipment and Job Site . . . . . . . . . . . . . . . . . . . . . . . . 3
Unpack Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Inspect Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step2 - Install on a Solid, Level Mounting Pad . . . . . . . . . . . . . . . . . . 3
Step3 - Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step4 - Operating Ambient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step5 - Elevate Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
(LSV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step7 - Make Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 1 - Refrigerant Connections and Recommended Liquid and Va-
por Tube Diameters (in.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 2 - Accessory Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Install Liquid-Line Filter Drier Indoor . . . . . . . . . . . . . . . . . . . . . 6
Refrigerant Tubing connection Outdoor. . . . . . . . . . . . . . . . . . . . 6
Sweat Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Evacuate Refrigerant Tubing and Indoor Coil . . . . . . . . . . . . . . . 6
Deep Vacuum Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Final Tubing Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step8 - Make Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Route Ground and Power Wires . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect Ground and Power Wires . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Final Wiring Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step9 - Compressor Crankcase Heater. . . . . . . . . . . . . . . . . . . . . . . . . 7
cating). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step10 - Install Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step11 - Start-Up & Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Follow these steps to properly start up the system: . . . . . . . . . . . 8
Step12 - Pumpdown & Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Step13 - System Functions and Major Components . . . . . . . . . . . . . 12
Primary Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Utility Interface With Infinity Control . . . . . . . . . . . . . . . . . . . . 12
Infinity Control, Green Communications (COMM) Light . . . . . 12
Amber Status Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5x7 LED Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
VFD Communications Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Bluetooth® Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Variable Frequency Drive (VFD) . . . . . . . . . . . . . . . . . . . . . . . . 14
Input Filter Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Installation Instructions
PAGE NO.
Reactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Variable Speed Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Time Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Vapor Injection Electronic Expansion Valve (EXV-VI) . . . . . . 14
BLDC Inverter-Controlled Fan Motor . . . . . . . . . . . . . . . . . . . . 14
Pressure Equalization Valve (PEV) . . . . . . . . . . . . . . . . . . . . . . 14
High Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Outdoor Pressure Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Crankcase Heater Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Infinity Controlled low ambient cooling . . . . . . . . . . . . . . . . . . 15
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Systems Communication Failure . . . . . . . . . . . . . . . . . . . . . . . . 15
Model Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 3 - Model Plug Information . . . . . . . . . . . . . . . . . . . . . . . . . 15
Pressure Switch Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Compressor Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Line Voltage Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Forced Defrost Pins (J9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Temperature Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 4 - Resistance Values versus Temperature . . . . . . . . . . . . . 15
Table 5 - ODT Resistance Values versus Temperatures . . . . . . . . 16
Outdoor Air Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Outdoor Coil Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Discharge Thermistor (ODT) . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Failed Thermistor Default Operation . . . . . . . . . . . . . . . . . . . . . 16
Variable Speed Compressor Winding Resistance . . . . . . . . . . . 16
Table 6 - Variable Speed Compressor Resistances
(winding resistance at 68°F? (20°F) . . . . . . . . . . . . . . . . . . . . . . . . 16
Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Status Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Status Code Recall Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 7 - Fault Code Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 8 - Malfunction Lockout Durations . . . . . . . . . . . . . . . . . . . 21
FINAL CHECKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
CARE AND MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PAGE NO.
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Related Manuals for Carrier Infinity 24VNA6
Summary of Contents for Carrier Infinity 24VNA6
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Page 1: Table Of Contents
24VNA6 Infinity™ Variable Speed Air Conditioner with Greenspeed™ Intelligence 2 to 5 Nominal Tons Installation Instructions NOTE: Read the entire instruction manual before starting the installation. Table of contents PAGE NO. PAGE NO. Reactors ......... . . 14 SAFETY CONSIDERATIONS . -
Page 2: Safety Considerations
24VNA6: Installation Instructions SAFETY CONSIDERATIONS WARNING Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which ELECTRICAL HAZARD - HIGH VOLTAGE! may cause death, personal injury, or property damage. Consult a Failure to follow this warning could result in personal injury or death. qualified installer, service agency, or your distributor or branch for Electrical components may hold charge. -
Page 3: Installation
24VNA6: Installation Instructions Heat Pumps Using Puron Refrigerant to obtain required unit changes for CAUTION specific applications and for R-22 retrofit. Step 1 – Check Equipment and Job Site EQUIPMENT DAMAGE HAZARD Unpack Unit Failure to follow this caution may result in equipment damage. Move to final location. -
Page 4: Step3 - Clearance Requirements
24VNA6: Installation Instructions On rooftop applications, mount on level platform or frame. Place unit above a load-bearing wall and isolate unit and tubing set from structure. Arrange supporting members to adequately support unit and minimize Furnace or Variable Speed transmission of vibration to building. Consult local codes governing User Interface Fan Coil AC or HP... - Page 5 24VNA6: Installation Instructions CAUTION CAUTION UNIT DAMAGE HAZARD UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or Failure to follow this caution may result in equipment damage or improper operation. improper operation. Do not leave system open to atmosphere any longer than minimum If ANY refrigerant tubing is buried, provide a 6 in.
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Page 6: Outdoor Unit Connected To Factory-Approved Indoor Unit
24VNA6: Installation Instructions Outdoor Unit Connected to Factory-Approved Indoor Refrigerant Tubing connection Outdoor Unit Connect vapor tube to fitting on outdoor unit vapor service valves (see Table Outdoor unit contains correct system refrigerant charge for operation with factory-approved, AHRI-rated smallest indoor unit when Sweat Connections connected by 15 ft. -
Page 7: Final Tubing Check
FIELD GROUND accessories such as the liquid line solenoid, support feet, snow rack, WIRING wind baffle etc., are available on other Carrier units can also be used on GROUND this line of product. Refer to the individual Installation Instructions A14028 packaged with kits or accessories when installing. -
Page 8: Step11 - Start-Up & Charging
24VNA6: Installation Instructions Step 11 – Start-Up & Charging Follow these steps to properly start up the system: 1. After system is evacuated, close the disconnects to energize indoor CAUTION unit, outdoor unit, and User Interface (UI). Do not attempt to operate the system in heating or cooling mode at this time. - Page 9 24VNA6: Installation Instructions 5. If the outdoor ambient temperature is between 65°F and 105°F and the indoor temperature is between 65°F and 80°F then select "subcool" (See Fig. 13). 6. The next screen will show the target subcooling that should be attained while charging (see Fig.
- Page 10 24VNA6: Installation Instructions A200035 A200039 Fig. 17 – Select Line Set Length & Vapor Line Diameter Fig. 21 – Total Charge Required for a Complete Charge A200036 Fig. 18 – Adjust Line Set Length & Vapor Line Diameter that is Installed A200037 Fig.
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Page 11: Step12 - Pumpdown & Evacuation
24VNA6: Installation Instructions Step 12 – Pumpdown & Evacuation Evacuation and Recovery of Refrigerant from within 24VNA6 Because this system has an inverter controlled compressor the conventional procedure cannot be used to "pump down" and isolate the Because the 5 ton unit has an EXV for the vapor injection device, refrigerant into the outdoor unit. -
Page 12: Step13 - System Functions And Major Components
24VNA6: Installation Instructions Step 13 – System Functions and Major Components Utility Interface With Infinity Control The utility curtailment relay should be wired between the two UTIL The 24VNA6 models utilize an Infinity Communicating User Interface connections on the control board for this Infinity Communicating (UI). - Page 13 24VNA6: Installation Instructions Fig. 26 – Variable Speed Control Board with optional Utility Relay A200049 Status LED (Yellow) CCN Communication LED (Green) VFD LED (Red / Green) VFD-PCM Communication Port A200044 Fig. 27 – Primary Control Board Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Page 14: Amber Status Light
1. Download the app from the user interface. To bypass this feature, momentarily short and – Search the App Store™ or Google Play™ for Carrier Service release Forced Defrost pins. Technician to download. The app is available on phone and tablet •... -
Page 15: Outdoor Pressure Transducers
24VNA6: Installation Instructions Outdoor Pressure Transducers CAUTION There are two pressure transducers installed on this unit. One is located at the discharge of the compressor and the other is located at the suction EQUIPMENT DAMAGE HAZARD of the compressor. These are labeled as "P1" and "P2" on the PCM and the connection to the control board can be interchanged without Failure to follow this caution may result in equipment damage and/or impacting the pressure measurements or system control. -
Page 16: Outdoor Air Thermistor
24VNA6: Installation Instructions Discharge Thermistor (ODT) Table 5 – ODT Resistance Values versus Temperatures Discharge thermistor is used for protection against over temperature of TEMPERATURE (°C) RESISTANCE (K OHMS) the compressor and the discharge superheat calculations. Proper 50.15 + / - 5.0% mounting is required to ensure that the unit exits the start-up mode. -
Page 17: Fan Motor
24VNA6: Installation Instructions Status Codes CAUTION Table 7 shows the status codes flashed by the amber status light. Most system problems can be diagnosed by reading the status code as flashed EQUIPMENT DAMAGE HAZARD by the amber status light on the control board. Failure to follow this caution may result in equipment damage and/or The codes are flashed by a series of short and long flashes of the status improper operation. - Page 18 24VNA6: Installation Instructions Thermidistat Furnace RVS Cooling O/B W2 Heat Stage 3 W/W1 W/W1 (furnace) Jumper Wire Heat/Cool Stage 1 Y1 / W2 Required for Single-Stage Heat/Cool Stage 2 Y/Y2 Y/Y2 24VAC Hot Heating 24VAC Hot Cooling J1 Jumper on Control Board Dry Contact 1 DHUM Dry Contact 2...
- Page 19 24VNA6: Installation Instructions Table 7 – Fault Code Table Code* Expansion Description Base Fault** Malfunction*** Line Voltage Low Line Voltage High PCM-Bluetooth Module Communication Failure Indoor Coil Freeze Protection 5V PCM External Power Out of Range Invalid Model Plug Model Plug Missing Model Plug Changed VFD/Equipment Model Mismatch PCM MCU Old Version...
- Page 20 24VNA6: Installation Instructions Table 7 – Fault Code Table (Continued) Code* Expansion Description Base Fault** Malfunction*** EXV-VI Phase Open EXV-VI Power Short to Ground EXV-VI Phase Short to Ground VFD Control Relay Coil Open VFD Control Relay Coil Shorted PFC Error Unbalanced PFCM Error VFD System Wiring Error VFD Line Current Speed Reduction...
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Page 21: Final Checks
24VNA6: Installation Instructions Table 8 – Malfunction Lockout Durations (Continued) Table 8 – Malfunction Lockout Durations Code Title Time Code Title Time 64-41 EXV-H Phase Open Duration of Event 24-58 5V PCM External Power Out of Range Duration of Event 64-44 EXV-H Power Short to Ground Duration of Event 25-61 Invalid Model Plug Malfunction... - Page 22 The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Carrier Corporation is under license. Other trademarks and trade names are those of their respective owners. Edition Date: 02/20 ©2020 Carrier Corp.•...