Table of Contents
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25VNA
Infinityt Variable Speed Heat Pump
with Greenspeedt Intelligence
2 to 5 Nominal Tons
NOTE: Read the entire instruction manual before starting the installation.
TABLE OF CONTENTS
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Installation Instructions
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Information in these installation instructions pertains only to
25VNA series units.
SAFETY CONSIDERATIONS
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Improper installation, adjustment, alteration, service, maintenance,
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or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
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damage. Consult a qualified installer, service agency, or your
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distributor or branch for information or assistance. The qualified
installer or agency must use factory- -authorized kits or accessories
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when modifying this product. Refer to the individual instructions
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packaged with the kits or accessories when installing.
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Follow all safety codes. Wear safety glasses, protective clothing,
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and work gloves. Use quenching cloth for brazing operations.
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Have fire extinguisher available. Read these instructions
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thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes and
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current editions of the National Electrical Code ( NEC ) NFPA 70.
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In Canada, refer to current editions of the Canadian electrical code
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CSA 22.1.
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Recognize safety information. This is the safety- -alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand
these signal words; DANGER, WARNING, and CAUTION. These
words are used with the safety- -alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury
or death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify unsafe
practices which would result in minor personal injury or product
and property damage. NOTE is used to highlight suggestions
which will result in enhanced installation, reliability, or operation.
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing and gloves when
handling parts.
CAUTION
! !
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Table of Contents
Related Manuals for Carrier Infinity 25VNA
Summary of Contents for Carrier Infinity 25VNA
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Page 1: Table Of Contents
25VNA Infinityt Variable Speed Heat Pump with Greenspeedt Intelligence 2 to 5 Nominal Tons Installation Instructions NOTE: Read the entire instruction manual before starting the installation. TABLE OF CONTENTS Information in these installation instructions pertains only to 25VNA series units. PAGE NO. -
Page 2: Installation Recommendations
Indoor Thermostat Control Options 5. Leave some slack between structure and unit to absorb vi- bration. Infinity Model Control 6. When passing refrigerant tubes through the wall, seal open- ing with RTV or other pliable silicon- -based caulk (see Fig. 25VNA Yes* 7. -
Page 3: Installation
INSTALLATION Step 3 — Clearance Requirements When installing, allow sufficient space for airflow clearance, Specifications for this unit in residential new construction market wiring, refrigerant piping, and service. Allow 24 in. (609.6 mm) require the outdoor unit, indoor unit (including metering device), clearance to service end of unit and 48 in. -
Page 4: Step 6 - Liquid Line Solenoid Valve (Lsv)
Step 6 — In Long- -Line Applications, Install Step 7 — Make Piping Connections Liquid- -Line Solenoid Valve (LSV) WARNING For refrigerant piping arrangements with equivalent lengths of greater than 80 ft. (24.38 m) and/or when elevation difference PERSONAL INJURY AND UNIT DAMAGE between indoor and outdoor unit is greater than 20 ft. - Page 5 Table 1 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.) LIQUID VAPOR* UNIT SIZE Connection Tube Connection Max (Rated) Minimum Tube Diameter Diameter Diameter Diameter Diameter 25VNA024 25VNA036 25VNA048 1--- 1/8 25VNA060 1--- 1/8 * Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for performance data when using different size and length line sets. Notes: 1.
- Page 6 Outdoor Unit Connected to Factory- - Approved Indoor Unit Outdoor unit contains correct system refrigerant charge for operation with factory- -approved, AHRI- -rated smallest indoor unit when connected by 15 ft. (4.57 m) of field- -supplied or factory- -accessory tubing, and factory- -supplied filter drier. Check refrigerant charge for maximum efficiency.
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Page 7: Step 8 - Make Electrical Connections
Connect Ground and Power Wires 5000 Connect ground wire to ground connection in control box for 4500 safety. Connect power wiring to contactor as shown in Fig. 8. 4000 LEAK IN 3500 DISCONNECT SYSTEM PER N. E. C. AND/OR 3000 LOCAL CODES 2500 CONTACTOR... -
Page 8: Step 10 - Install Accessories
External to the unit, the same 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 this line of product. Refer to the individual Installation Instructions packaged with kits or accessories when installing. -
Page 9: General Information
Crankcase Heater Operation Communication and Status Function Lights This unit has an internal crankcase heater that will be energized Infinity Control, Green Communications (COMM)Light during the off cycle and is intelligently demanded by the system to A green LED (COMM light) on the outdoor board (see Fig. 11) prevent the compressor from being the coldest part of the system indicates successful communication with the other system thus enhancing the reliability. -
Page 10: Step 13 - Check Charge
The control board accumulates compressor run time. As the The use of a commercial charge metering device (restrictor) such as accumulated run time approaches the selected defrost interval time, Imperial liquid low side charger model 535- -C or Watsco the control board monitors the coil temperature sensor for a defrost ChargeFaster model CH200 is recommended when adding demand. -
Page 11: Step 14 - Pumpdown & Evacuation
Charging In Cooling Mode - 25VNA024/036 Charging In Cooling Mode - 25VNA048/060 See user interface set in Charging Mode See user interface set in Charging Mode Heating Check Chart - 25VNA024/036 Heating Check Chart - 25VNA048/060 For use in Heating Charging Mode only For use in Heating Charging Mode only 2757 3102... -
Page 12: Major Components
MAJOR COMPONENTS TROUBLESHOOTING Variable speed Control Board Systems Communication Failure The HP control board controls the following functions: If communication with the Infinity control is lost with the User Interface (UI), the control will flash the appropriate fault code (see S Compressor speed Table 7). - Page 13 Brown- - Out Protection If the sensors are out of range, the control will flash the appropriate fault code as shown in Table 7. If the line voltage is less than 187v for at least 4 seconds, the The thermistor comparisons are not performed during low ambient contactor and fan relay are de- -energized.
- Page 14 ECM Fan Motor If verification of proper operation is required for the ECM motor PRESSURE TRANSDUCER (SPT) used in this unit, follow these steps: ACCUMULATOR TUBE 1. Verify that the 230v input to the transformer is present. SUCTION TUBE 2. Verify that the control board is powered 18 volts to 30 volts COMPRESSOR SUCTION THERMISTOR (OST) from the transformer.
- Page 15 User Interface (UI) Furnace or Fan Coil VS HP C and D not required on VS Heat Pump Humidifier A12055 Fig. 18 - - Infinity Furnace or Fan Coil Wiring with Communicating Variable Speed HP Furnace or Fan Coil VS HP ...
- Page 16 SEC2 SEC1 PWM2 PWM1 PL11 COMM STATUS LS Y UTIL FORCED A B C NO MODEL DEFROST Utility Interface* A11544 Fig. 20 - - Variable Speed Control Board with optional Utility Relay SEC2 SEC1 PWM2 PWM1 PL11 COMM STATUS LS Y UTIL FORCED A B C NO...
- Page 17 Table 7 – Troubleshooting FLASH CODE RESET TIME FAULT/OPERATION DESCRIPTION (Amber LED) (minutes) Standby ON, no flash --- --- Variable Capacity or Emergency Mode 1, pause --- --- Variable Speed Range Cutback 1 (2 sec ON), longer pause (1 second OFF) --- --- Communications Loss Invalid Model...
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Page 18: Final Checks
S All indoor coils must be installed with a hard- -shutoff Puron refrigerant TXV metering device. Catalog No: 25VNA ---5SI Copyright 2014 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 04/14 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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