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26VNA1 Infinity®
Variable Speed Air Conditioner
with Greenspeed® Intelligence
and Puron Advance™ (R-454B) Refrigerant
2 to 5 Nominal Tons
NOTE: Read the entire instruction manual before starting the installation. Unit MUST be installed with rated R-454B indoor with factory approved
dissipation control board installed.
Table of contents
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
VFD Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 1 – Check Equipment and Job Site . . . . . . . . . . . . . . . . . . . . . . . . 4
Unpack Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Inspect Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 2 – Install on a Solid, Level Mounting Pad . . . . . . . . . . . . . . . . . 4
Step 3 – Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 4 – Operating Ambient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 5 – Elevate Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 6 – In Long-Line Applications, Install Liquid-Line Solenoid Valve
(LLS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 7 – Make Piping Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 1 – Refrigerant Connections and Recommended Liquid and Va-
por Tube Diameters (in.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Outdoor Unit Connected to Factory-Approved Indoor Unit . . . . 6
Mechanical Line Set Connections . . . . . . . . . . . . . . . . . . . . . . . . 6
Install Liquid-Line Filter Drier - Indoor . . . . . . . . . . . . . . . . . . . . 6
Refrigerant Tubing Connection - Outdoor . . . . . . . . . . . . . . . . . . 6
Sweat Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pressure Test Tubing And Indoor Coil . . . . . . . . . . . . . . . . . . . . . 6
Evacuate Refrigerant Tubing and Indoor Coil . . . . . . . . . . . . . . . 6
Mandatory Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pressure Proof Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Leak Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Final Tubing Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 8 – Make Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . 7
Route Ground and Power Wires . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect Ground and Power Wires . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Final Wiring Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 9 – Compressor Stator Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 10 – Install Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 11 – Start-Up & Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 2 – Environment Type Guideline . . . . . . . . . . . . . . . . . . . . . . 9
Table 3 – Standard Subcooling Values. . . . . . . . . . . . . . . . . . . . . . . 9
Setup for Infinity® Control Furnace or
FE Fan Coil (Communicating). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Follow these steps to properly start up the system: . . . . . . . . . . . 9
Table 4 – Required Liquid Line Temperature for R-454B . . . . . . . 11
Check Charge - Cooling / Heating . . . . . . . . . . . . . . . . . . . . . . . 12
Post Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 5 – Minimum Room Area Charging Table. . . . . . . . . . . . . . 12
Step 12 – Pumpdown & Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Step 13 – System Functions and Major Components . . . . . . . . . . . . . 14
Primary Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Installation Instructions
PAGE NO.
Utility Interface With Infinity® Control . . . . . . . . . . . . . . . . . . 15
Infinity® Green Communications (COMM) Light . . . . . . . . . . 15
Amber Status Light. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5x7 LED Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
VFD Communications Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Bluetooth® Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Variable Frequency Drive (VFD). . . . . . . . . . . . . . . . . . . . . . . . 16
Table 6 – VFD LED Indicator Functions . . . . . . . . . . . . . . . . . . . . 16
Input Filter Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Reactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Variable Speed Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Time Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Variable Speed Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Pressure Equalization Valve (PEV) . . . . . . . . . . . . . . . . . . . . . . 17
High Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Outdoor Pressure Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Stator Heat Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Infinity® Controlled Low Ambient Cooling . . . . . . . . . . . . . . . 17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Systems Communication Failure . . . . . . . . . . . . . . . . . . . . . . . . 17
Model Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 7 – Model Plug Information . . . . . . . . . . . . . . . . . . . . . . . . . 17
Pressure Switch Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Compressor Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Line Voltage Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Forced Defrost Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Temperature Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 8 – 10K Thermistor Resistance Values . . . . . . . . . . . . . . . . 18
Table 9 – 50K Thermistor Resistance Values . . . . . . . . . . . . . . . . 18
Outdoor Suction Temperature (OST) . . . . . . . . . . . . . . . . . . . . . 18
Outdoor Air Temperature (OAT) . . . . . . . . . . . . . . . . . . . . . . . . 18
Outdoor Coil / Liquid Line Temperature (LLT-AC) . . . . . . . . . 19
Outdoor Discharge Line Temperature (ODT) . . . . . . . . . . . . . . 19
Failed Thermistor Default Operation . . . . . . . . . . . . . . . . . . . . . 19
Variable Speed Compressor Winding Resistance . . . . . . . . . . . 19
Table 10 – Variable Speed Compressor Resistances
(winding resistance at 68°F) (20°F) . . . . . . . . . . . . . . . . . . . . . . . . 19
Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Status Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Status Code Recall Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 11 – Diagnostic Code Table . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 12 – Malfunction Lockout Durations . . . . . . . . . . . . . . . . . . 21
FINAL CHECKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
REPAIRING REFRIGERANT CIRCUIT. . . . . . . . . . . . . . . . . . . 21
CARE AND MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Puron Advance™ (R-454B) Refrigerant - Quick Reference Guide . . 22
PAGE NO.
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Related Manuals for Carrier Infinity 26VNA1
Summary of Contents for Carrier Infinity 26VNA1
- Page 1 26VNA1 Infinity® Variable Speed Air Conditioner with Greenspeed® Intelligence and Puron Advance™ (R-454B) Refrigerant 2 to 5 Nominal Tons Installation Instructions NOTE: Read the entire instruction manual before starting the installation. Unit MUST be installed with rated R-454B indoor with factory approved dissipation control board installed.
- Page 2 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions SAFETY CONSIDERATIONS WARNING This appliance shall only be installed by EPA qualified personnel and have Section 608 Technician Certification. This appliance is not ELECTRICAL SHOCK HAZARD intended for use by persons (including children) with reduced physical, Failure to follow this warning could result in personal injury or death.
- Page 3 Liquid Line Temperature CAULK LIQUID TUBE Outdoor Air Temperature Pressure Equalization Valve Carrier Communication Network NOTE: In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment. SUCTION TUBE INSULATION 1. This unit is intended to be installed in a location that is 10,000 feet (3000 meters) above sea level or lower.
- Page 4 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Step 1 – Check Equipment and Job Site On rooftop applications, mount on level platform or frame. Place unit above a load-bearing wall and isolate unit and tubing set from structure. Unpack Unit Arrange supporting members to adequately support unit and minimize Move to final location.
- Page 5 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation. Do not leave system open to atmosphere any longer than minimum required for installation. PVE oil in compressor is extremely susceptible to moisture absorption.
- Page 6 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Outdoor Unit Connected to Factory-Approved Indoor WARNING Unit When outdoor unit is connected to factory-approved R-454B indoor FIRE HAZARD unit, the outdoor unit contains correct system refrigerant charge for operation with smallest internal volume factory-approved, AHRI-rated Failure to follow this warning could result in personal injury, death indoor unit when connected by 15 ft.
- Page 7 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Be sure field wiring complies with local and national fire, safety, and electrical codes, and voltage to system is within limits shown on unit rating plate. Contact local power company for correction of improper voltage.
- Page 8 PERSONAL INJURY HAZARD accessories such as the liquid line solenoid, support feet, snow rack, wind baffle etc., are available on other Carrier units can also be used on Failure to follow this warning could result in personal injury or death.
- Page 9 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Table 2 – Environment Type Guideline Average Annual Relative Humidity (%) Type <45 Arid 45 - 65 Semi-Arid Humid NOTE: Infinity® System Control indicates acceptable conditions for subcool charging mode. Do not use subcooling charge method if outside 65°F (18°C) and 105°F(40.6°C) outdoor temperature.
- Page 10 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions 6. For new installations, select "new ODU (factory pre-charged)" from the refrigerant charge screen to begin charging the system (Fig. 15). For applications where there is no charge in the ODU, select “full system charge/recharge”. A240344 Fig.
- Page 11 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions 8. The next screen, “cooling charge mode start” is shown in Fig. 18 subcooling is high. Tolerance should be ±1°F. It is recommended to Fig. 19 depending on whether subcooling charging is available. The validate the subcooling using traditional methods of measuring reason for unavailability of subcooling can be viewed by pressing temperature and pressure at the liquid service valve when charging...
- Page 12 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Check Charge - Cooling / Heating Post Charging Final charge should be recored on the outdoor unit charging label with The check charge workflow allows a user to operate the system at fixed, permanent and legible writing.
- Page 13 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Step 12 – Pumpdown & Evacuation Because this system has a VFD controlled compressor the conventional procedure cannot be used to "pumpdown" and isolate the refrigerant into the outdoor unit. The Infinity® System Control has provisions to assist in performing this function.
- Page 14 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Step 13 – System Functions and Major Components Primary Control Module The Primary Control Module (PCM) controls the various functions of The 26VNA1 models utilize an Infinity® System Control. When a demand for cooling exists, the Infinity® System Control will direct the the outdoor unit.
- Page 15 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Utility Interface With Infinity® Control Infinity® Green Communications (COMM) Light The utility curtailment relay should be wired between the two UTIL A green LED (COMM light) on the outdoor board (see Fig. 27) indicates connections on the control board for this Infinity Communicating successful communication with the other system products.
- Page 16 Green 1. Download the app from PCM. – Search the App Store™ or Google Play™ for Carrier Service On when VFD is in normal status. It is off Green Technician to download. The app is available on phone and tablet when VFD is fault status.
- Page 17 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions P2 inputs on the PCM. Each transducer may be connected to either WARNING PCM input. These transducers have a range from 0 to 620 psig and are used for system protection, control, and diagnostics. Stator Heat Operation ELECTRICAL HAZARD - HIGH VOLTAGE Failure to follow this warning could result in personal injury or death.
- Page 18 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Temperature Thermistors CAUTION Thermistors are used to sense the outdoor ambient (OAT), liquid line (LLT-AC), outdoor suction (OST), and outdoor discharge (ODT) line EQUIPMENT DAMAGE HAZARD temperatures. All thermistors are 10K thermistors except for the ODT, which is a 50k thermistor.
- Page 19 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions WARNING CAUTION PERSONAL INJURY AND/OR PROPERTY DAMAGE EQUIPMENT DAMAGE HAZARD HAZARD Failure to follow this caution may result in equipment damage and/or improper operation. Failure to follow this warning could result in personal injury and/or In order to minimize the ambient influence, make sure the thermistor property damage.
- Page 20 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Status Codes EXAMPLE: 3 short flashes followed by 2 long flashes indicates a 32 code. Table 11 Table 11 shows the status codes flashed by the amber status light. Most shows this to be low pressure switch open. system problems can be diagnosed by reading the status code as flashed Status Code Recall Mode by the amber status light on the control board.
- Page 21 26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions Table 12 – Malfunction Lockout Durations (Continued) Table 12 – Malfunction Lockout Durations Code Title Time Code Title Time 61-41 Reversing Valve Solenoid Open Duration of Event 13-53 System Control Upgrade Required Permanent 64-41 EXV-H Phase Open Duration of Event...
- 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: 08/24 ©...
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