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Carrier Infinity 24VNA636 User Manual

Carrier Infinity 24VNA636
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Installation Instructions
NOTE: Read the entire instruction manual before starting the installation.
Table of contents
PAGE NO. PAGE NO.
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
Step6 – In Long-Line Applications, Install Liquid-Line Solenoid Valve
(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
Outdoor Unit Connected to Factory-Approved Indoor Unit . . . . 6
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
Airflow Setup for Infinity Control Furnace or FE Fan Coil (communi-
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
Evacuation and Recovery of Refrigerant from within 24VNA6 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
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
Emergency Mode Connections with a Conventional Thermostat17
Table 7 – Fault Code Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 8 – Malfunction Lockout Durations . . . . . . . . . . . . . . . . . . . 21
FINAL CHECKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
CARE AND MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
24VNA6
Infinity™ Variable Speed Air Conditioner
with Greenspeed™ Intelligence
2 to 5 Nominal Tons

Table of Contents

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Carrier Infinity 24VNA636 Specifications

General IconGeneral
Model Number24VNA636
BrandCarrier
SeriesInfinity
Cooling Capacity (BTU/h)36, 000
Energy Star CertifiedYes
Refrigerant TypeR-410A
Compressor TypeVariable Speed
TypeAir Conditioner
Voltage (V/Ph/Hz)208/230/1/60
Indoor Unit CompatibilityCompatible with various Carrier indoor units
Warranty10 Years on Compressor, 10 Years on Parts

Summary

Safety and Installation Guidance

Installation Recommendations

Advice on unit placement, noise reduction, and lineset routing for optimal performance.

Indoor Thermostat Control Options

Details on compatible thermostat models for system control and operation.

Installation Steps and Procedures

Pre-Installation Checks and Site Prep

Unpacking, inspection, site preparation, and clearance requirements.

Piping, Connections, and Evacuation

Installing solenoid valve, making refrigerant connections, and performing evacuation.

Electrical Wiring and Accessory Installation

Connecting power, control wiring, and installing accessories like crankcase heater.

System Operation and Commissioning

System Start-Up and Charging

Detailed steps for initiating system operation and performing refrigerant charging.

Pumpdown and Evacuation Procedures

Methods for isolating refrigerant and performing system evacuation using the UI.

Key System Components and Functions

Overview of major components like PCM, VFD, compressor, sensors, and control lights.

Troubleshooting and Maintenance

Troubleshooting Fault Codes and Errors

Explains fault codes, communication failures, sensor errors, and diagnostic procedures.

Final Checks and Routine Maintenance

Final inspection points before job completion and guidance on periodic system upkeep.

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