Carrier 24VNA9 Infinity 19VS Installation Instructions Manual
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Carrier 24VNA9 Infinity 19VS Installation Instructions Manual

Variable speed air conditioner with puronr refrigerant
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24VNA9
Infinityr 19VS Variable Speed Air Conditioner
with Puronr Refrigerant
NOTE: Read the entire instruction manual before starting the installation.
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Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Installation Instructions

TABLE OF CONTENTS

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Catalog No: 24VNA9--- 3SI (rev 1)
Replaces: 24VNA9--- 2SI

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Summary of Contents for Carrier 24VNA9 Infinity 19VS

  • Page 1: Table Of Contents

    24VNA9 Infinityr 19VS Variable Speed Air Conditioner with Puronr Refrigerant Installation Instructions NOTE: Read the entire instruction manual before starting the installation. TABLE OF CONTENTS PAGE NO. SAFETY CONSIDERATIONS ..............INSTALLATION RECOMMENDATIONS .

  • Page 2: Safety Considerations

    IMPORTANT: Effective January 1, 2015, all split system and Indoor Thermostat Control Options packaged air conditioners must be installed pursuant to applicable Infinity Touch Standard Model Control Thermostat regional efficiency standards issued by the Department of Energy. Information in these installation instructions pertains only to 24VNA9 Yes* Yes**...

  • Page 3: Installation

    INSTALLATION 8. Do not suspend refrigerant tubing from joists and studs with a rigid wire or strap which comes in direct contact with tub- Specifications for this unit in residential new construction market ing (see Fig. 1). require the outdoor unit, indoor unit (including metering device), 9.

  • Page 4: Step 3 - Clearance Requirements

    Step 3 — Clearance Requirements Step 5 — Elevate Unit When installing, allow sufficient space for airflow clearance, Elevate unit per local climate and code requirements to provide wiring, refrigerant piping, and service. Allow 24 in. (609.6 mm) clearance above estimated snowfall level and ensure adequate clearance to service end of unit and 48 in.

  • Page 5: Step 7 - Make Electrical Connections

    Outdoor Unit Connected to Factory- - Approved Indoor Evacuate Refrigerant Tubing and Indoor Coil Unit CAUTION Outdoor unit contains correct system refrigerant charge for operation with factory- -approved, AHRI- -rated indoor units when connected by 15 ft. (4.57 m) of field- -supplied or factory- -accessory UNIT DAMAGE HAZARD tubing, and factory- -supplied filter drier.
  • Page 6 Connect Control Wiring- - Infinity Touch NOTE: Install branch circuit disconnect of adequate size per NEC to handle unit starting current. Locate disconnect within sight from Connect to Infinity connections. Only two wires (AB) to Infinity and readily accessible from unit, per Section 440- -14 of NEC. capable indoor unit (furnace or fan coil) are required.
  • Page 7 Thermidistat Fan Coil RVS Cooling O/B W2 Heat Stage 3 W/W1 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 Dry Contact 2 24VAC Common Humidify...

  • Page 8: Step 8 - Compressor Internal Crankcase Heater

    Refrigerant Charging, then select Charging Cooling. accessories such as support feet, snow rack, wind baffle etc., available on other Carrier units, can also be used on this line of product. For models utilizing 23 inch x 23 inch base pans, it is recommended to use 5 support feet in order to fully support unit.
  • Page 9 CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in improper unit operation. For new installations only. Add additional refrigerant due to indoor coil, line set, and vapor line settings. Outdoor unit is pre- -charged with weight of refrigerant shown on rating plate. A14567 Fig.

  • Page 10: Step 11 - System Functions And Sequence Of Operation

    Step 11 — System Functions and Sequence of The use of a commercial charge metering device (restrictor) such as Imperial liquid low side charger model 535- -C or Watsco Operation ChargeFaster model CH200 is recommended when adding The 24VNA9 models utilize either Infinity Touch Communicating refrigerant to an operating system.
  • Page 11 Charging Non- - Communicating Systems For standard refrigerant line lengths (80ft/24.4 m or less), allow system to operate in cooling mode at least 25 minutes. If conditions Charging Procedure: Force system to operate in high stage are favorable, check system charge by subcooling method. If any cooling by creating a large differential between room temperature adjustment is necessary, adjust charge slowly and allow system to and set point on thermostat.
  • Page 12 Fig. 19 - - Charging in Cooling Mode 24VNA913 Fig. 23 - - Charging in Cooling Mode 24VNA937 - 24A, 25 Fig. 20 - - Charging in Cooling Mode 24VNA924A/25 Fig. 24 - - Charging in Cooling Mode 24VNA948 CHARGING IN COOLING MODE - 24B Fig.

  • Page 13: Step 13 - Pumpdown & Evacuation

    Step 13 — Pumpdown & Evacuation Evacuation and recovery of refrigerant from 24VNA9 CAUTION 1. Connect gauges to 24VNA9 liquid and vapor service valve ports to monitor operating pressures during and at comple- ENVIRONMENTAL HAZARD tion of the procedure. Attach recovery system or vacuum pump to gauge set as needed for the service procedure.

  • Page 14: Troubleshooting

    TROUBLESHOOTING NOTE: The unit may be operated with an Infinity Touch Control or a standard 2- -stage thermostat. Infinity Touch Control will utilize Systems Communication Failure 5 stages cooling, while 2- -stage thermostat will only allow 2 If communication is lost with the User Interface (UI), the control discrete stages of cooling operation.
  • Page 15 Temperature Thermistors To use a service tool, connect the A and B communication bus wires from this second communicating control to the terminals Thermistors are electronic devices which sense temperature. As the marked A and B on the terminal strip located in the bottom left temperature increases, the resistance decreases.
  • Page 16 Thermistor Sensor Comparison Suction Thermistor (OST) Suction Thermistor is used to accurately measure suction The control continuously monitors and compares the outdoor air temperature sensor and outdoor coil temperature sensor to ensure temperature and must be secured on the suction tube and aligned proper operating conditions.
  • Page 17 Variable Speed Compressor Winding Resistance Fan Motor This compressor operates with 3- -phase variable frequency PWM If verification of proper operation is required for the fan motor variable voltage. For troubleshooting certain fault codes related to used in this unit, follow these steps: compressor resistances, follow these steps: 1.
  • Page 18 Utility Relay A13414 Fig. 35 - - Variable Speed Control Board with optional Utility Relay Catalog No: 24VNA9--- 3SI (rev 1) Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 24VNA9--- 2SI...
  • Page 19 Table 6 – Troubleshooting SERVICE FLASH RESET TIME AMBER LED DESCRIPTION CODE (Minimum) Minutes (Amber LED) Standby ON, no flash Variable Capacity 1, pause Mode Variable 1 (2 sec ON), Speed longer pause Range (1 second OFF) Cutback Communications Loss Invalid Model High Pressure Switch Open Low Pressure Trip...

  • Page 20: Final Checks

    S Observe all warnings, cautions, and bold text. S All indoor coils must be installed with a hard- -shutoff Puron refrigerant TXV metering device. Copyright 2015 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 03/15 Catalog No: 24VNA9--- 4SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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