Carrier 25VNA8 Installation Instructions Manual
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Carrier 25VNA8 Installation Instructions Manual

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See also: Owner's Manual
25VNA8
Infinityr 18VS Variable Speed Heat Pump
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: 25VNA8--- 5SI
Replaces: 25VNA8--- 4SI

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Summary of Contents for Carrier 25VNA8

  • Page 1: Table Of Contents

    ..........Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

  • Page 2: Safety Considerations

    RTV or other pliable silicon- -based caulk (see Fig. tag switch with a suitable warning label. Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...

  • Page 3: Installation

    -bearing wall and isolate unit and tubing set from IMPORTANT: Liquid- -line size is 3/8- -in. OD for all 25VNA8 structure. Arrange supporting members to adequately support unit applications. The maximum allowable equivalent line set length is and minimize transmission of vibration to building.

  • Page 4: Step 3 - Clearance Requirements

    (24.38 - - 30.48 m), capacity and performance losses can occur. drainage of unit. Follow the pipe sizing recommendations in the 25VNA8 Product CAUTION data to manage these losses. This unit shall not be installed with greater than 100 ft (30.48 m) of equivalent line length.
  • Page 5 Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight. Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...
  • Page 6 Connect Control Wiring- - Non- - Communicating Do not supply power to unit with compressor terminal box Six wires are required when connecting 25VNA8 models to cover removed. non- -communicating 2- -stage thermostats. Use Fig. 8 For required connections.
  • Page 7 OAT/RRS Com SRTN Remote Room Sensor A14029 Fig. 8 - - Low Voltage Wiring (Non- -Communicating) Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...

  • Page 8: Step 8 - Compressor Internal Crankcase Heater

    Carrier units, can also be used on this line of Upon initial start- -up of unit, status code 68 will be generated and product. For models utilizing 23 inch x 23 inch base pans, it is system will operate at stage 2 for 11 minutes.
  • Page 9 Coil & Lineset Additional Charge Required A14572 Fig. 15 - - Additional Required Charge Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...

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

    This unit has an internal crankcase heater that will be energized during the off cycle and is intelligently demanded by the system to The 25VNA8 models utilize either Infinity Touch Communicating prevent the compressor from being the coldest part of the system User Interface (UI) or conventional HP thermostat.

  • Page 11: Step 12 - Check Charge

    OD is between 65_F (18_C) and 100_F (38_C). A14575 Fig. 19 - - Stabilization Time Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...
  • Page 12 Fig. 21 - - Charging in Cooling Mode 25VNA824A/25 Fig. 26 - - Charging in Cooling Mode 25VNA860 Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...
  • Page 13 +2.2 +1.00 CAP**60 +2.2 +1.00 CNP**61 = Comb. not allowed = No charge adjust for ID Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...
  • Page 14 Fig. 29 - - Heating Pressure Check Chart 25VNA824B Fig. 30 - - Heating Pressure Check Chart 25VNA836 Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...

  • Page 15: Step 13 - Pumpdown & Evacuation

    The UI (User Interface) has provisions to assist in performing the EXV for refrigerant recovery and/or evacuation. this function. 1. Connect gauges to 25VNA8 liquid and vapor service valve 1. Connect gauges to 25VNA8 liquid and vapor service valve ports to monitor operating pressures during and at comple- ports to monitor operating pressures during and at comple- tion of the procedure.

  • Page 16: Major Components

    5 stages of heating and cooling, while 2- -stage HP thermostat will only allow 2 discrete stages of heating and cooling operation. Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...

  • Page 17: Troubleshooting

    Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 18  25_F ( 15_C) cooler than the coil sensor, the sensors are out Fig. 39 - - OAT Thermistor Location (Bottom of Control Box) of range. Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...
  • Page 19 4. If the resistances check out, reconnect power leads to Codes are easily read from user interface (UI) appropriate terminal. Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...
  • Page 20 UTIL connections on the control board for this Infinity Utility Relay A13414 Fig. 42 - - Variable Speed Control Board with optional Utility Relay Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...

  • Page 21: Troubleshooting

    341475-101 REV. A Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...

  • Page 22: Final Checks

    TM Mark indicates a manufacturer’s participation in the program For verification of certification for individual products, go to www.ahridirectory.org. Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...
  • Page 23 Copyright 2015 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 03/15 Catalog No: 25VNA8--- 5SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 25VNA8--- 4SI...

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